GleghornLab/Signor_3class · Datasets at Hugging Face

IdA stringlengths 6 21	IdB stringlengths 6 21	labels int64 0 2	mechanism stringclasses 40 values	effect stringclasses 10 values	score float64 0.1 0.99 ⌀	sentence stringlengths 10 1.63k ⌀	signor_id stringlengths 12 14
O15151	O15151	2	ubiquitination	down-regulates quantity by destabilization	0.2	Here we demonstrate that MdmX acts as a ubiquitin ligase in vitro, being capable of autoubiquitination, as well as mediating the ubiquitination of p53.	SIGNOR-271390
P38398	Q9BXW9	1	ubiquitination	up-regulates activity	0.845	The major genetic evidence supporting ubiquitin ligase function for BRCA1 in vivo comes from studies on the FANCD2 protein. Whereas in wild‐type cells the FANCD2 protein co‐localizes with BRCA1 in nuclear foci and becomes monoubiquitylated in response to DNA damage, HCC1937 cells, which encode a mutated form of BRCA1, are largely defective for both monoubiquitylation of FANCD2 and foci formation	SIGNOR-263236
O95837	P30556	2	binding	up-regulates activity	0.49	Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. \| We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. \| The score associated to this interaction has a LogRAi ≥ -1.0.	SIGNOR-257133
P05783	P06493	0	phosphorylation	up-regulates	0.338	We identified k18 ser33 as an interphase phosphorylation site, which increases its phosphorylation during mitosis in cultured cells and regenerating liver, and as an in vitro cdc2 kinase phosphorylation site. K18 ser33 phosphorylation dictates binding to 14_3_3 proteins	SIGNOR-55994
Q01344	O60674	1	phosphorylation	up-regulates activity	0.602	Jak 2 is physically associated with the IL-5b receptor. The binding of IL-5 to its receptor results in tyrosine phosphorylation and activation of Jak 2 tyrosine kinase within 1 to 3 min.	SIGNOR-254352
Q12913	P36888	1	dephosphorylation	down-regulates activity	0.49	Moreover, activated FLT3 could be dephosphorylated by recombinant DEP-1 in vitro.\|The data indicate that DEP-1 is negatively regulating FLT3 signaling activity and that its loss may contribute to but is not sufficient for leukemogenic cell transformation.	SIGNOR-277092
P38936	Q9UHC7	0	polyubiquitination	down-regulates quantity by destabilization	0.313	Makorin Ring Finger Protein 1 (MKRN1) is a transcriptional co-regulator and an E3 ligase. Here, we show that MKRN1 simultaneously functions as a differentially negative regulator of p53 and p21. In normal conditions, MKRN1 could destabilize both p53 and p21 through ubiquitination and proteasome-dependent degradation. As a result, depletion of MKRN1 induced growth arrest through activation of p53 and p21.	SIGNOR-271845
O00716	Q14186	2	binding	up-regulates activity	0.74	The transcriptionally active forms of E2F are heterodimers composed of one polypeptide encoded by the E2F gene family and one polypeptide encoded by the DP gene family.In transfected cells, DP-1 did not accumulate in the nucleus unless it was coexpressed with the heterodimeric partners E2F-1, E2F-2, or E2F-3.	SIGNOR-240553
P28336	P63092	2	binding	up-regulates activity	0.25	Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. \| We defined positive coupling if any member of the subfamily scored LogRAi ‚â• -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ‚â• -1.0 for defining true couplings. \| The score associated to this interaction has a LogRAi ‚â• -1.0.	SIGNOR-256775
P29475	Q9UQM7	0	phosphorylation	down-regulates activity	0.471	It was found that purified recombinant nNOS was phosphorylated by CaM-K Ialpha, CaM-K IIalpha, and CaM-K IV at Ser847 in vitro. Replacement of Ser847 with Ala (S847A) prevented phosphorylation by CaM kinases. Phosphorylated recombinant wild-type nNOS at Ser847 (approximately 0.5 mol of phosphate incorporation into nNOS) exhibited a 30% decrease of Vmax with little change of both the Km for L-arginine and Kact for CaM relative to unphosphorylated enzyme. The activity of mutant S847D was decreased to a level 50-60% as much as the wild-type enzyme. The decreased NOS enzyme activity of phosphorylated nNOS at Ser847 and mutant S847D was partially due to suppression of CaM binding, but not to impairment of dimer formation which is thought to be essential for enzyme activation.	SIGNOR-250635
O00327	Q07869	2	transcriptional regulation	up-regulates quantity by expression	0.596	We demonstrate that PPARalpha plays a specific role in the peripheral circadian control because it is required to maintain the circadian rhythm of the master clock gene brain and muscle Arnt-like protein 1 (bmal1) in vivo. This regulation occurs via a direct binding of PPARalpha on a potential PPARalpha response element located in the bmal1 promoter. Reversely, BMAL1 is an upstream regulator of PPARalpha gene expression.	SIGNOR-268025
P28221	P08754	2	binding	up-regulates activity	0.435	Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. \| We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. \| The score associated to this interaction has a LogRAi ≥ -1.0.	SIGNOR-256864
Q96QT6	Q04725	2	binding	up-regulates activity	0.2	We have cloned and characterized a new member of the PHD zinc finger family called Pf1 that interacts with two global transcription corepressors: mSin3A and TLE. Pf1 interacts with TLE. The Groucho/TLE proteins are members of an abundant corepressor family, and we hypothesized that Pf1 might interact with TLE family members. Together, these data suggest that in the absence of interactions with mSin3A, Gal4-Pf1 (102–273 L212P/A216P)-dependent repression can be attributed to interaction with endogenous TLE.	SIGNOR-266992
P41231	P38405	2	binding	up-regulates activity	0.2	Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. \| We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. \| The score associated to this interaction has a LogRAi ≥ -1.0.	SIGNOR-256902
Q15485	P48740	2	binding	up-regulates activity	0.788	H-ficolin binds to PSA, a polysaccharide produced by Aerococcus viridans. C4 was activated by H-ficolin preparations bound to PSA which had been coated on ELISA plates. These results indicate that H-ficolin is a second ficolin which is associated with MASPs and sMAP, and which activates the lectin pathway\|Proteolytic activation of complement components by H-ficolin-MASP.	SIGNOR-263411
P43116	P38405	2	binding	up-regulates activity	0.25	Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. \| We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. \| The score associated to this interaction has a LogRAi ≥ -1.0.	SIGNOR-256899
P28482	P10828	1	phosphorylation	down-regulates activity	0.412	We concluded that serine 142 of the tr dbd is the likely site of phosphorylation by t(4)-activated mapk and that the docking site on tr for activated mapk includes residues 128-133 (kgffrr), a basic amino acid-enriched motif novel for mapk substrates. Tr mutations in the proposed mapk docking domain and at residue 142 modulated t(4)-conditioned shedding of co-repressor and recruitment of co-activator proteins by the receptor, and they altered transcriptional activity of tr in a thyroid hormone response element-luciferase reporter assay.	SIGNOR-102216
P53350	P30291	1	phosphorylation	down-regulates quantity by destabilization	0.642	In the present study, we show that phosphorylation of S123 (pS123) by CDK promoted the binding of Wee1A to beta-TrCP through three independent mechanisms. S123 phosphorylation creates a PBD-binding motif and accelerates S53 phosphorylation by Plk1.	SIGNOR-276040
P18858	P06493	0	phosphorylation	up-regulates activity	0.364	We show that three residues (ser51, ser76, and ser91), which are part of cyclin-dependent kinase sites, are phosphorylated in a cell cycle-dependent manner.	SIGNOR-103242
P16220	O75030	1	transcriptional regulation	up-regulates quantity by expression	0.633	Therefore, the molecular steps linking cAMPto melanogenesis up-regulation appear currently better elucidated. cAMP activates PKA, and PKA phosphorylates and activates CREB which, when activated, binds to the CRE domain present in the microphthalmia promoter,thereby up-regulating its transcription.	SIGNOR-249619
Q9Y6W6	P45983	1	dephosphorylation	down-regulates	0.705	Mkp-5 directly dephosphorylates sapk/jnk and p38 in vitromkp-5 binds to p38 and sapk/jnk, but not to mapk/erk, and inactivates p38 and sapk/jnk	SIGNOR-68986
Q9Y4H2	P16220	0	transcriptional regulation	up-regulates quantity by expression	0.342	Taken together, these results indicate that the IRS2 gene is a direct target for CREB action in vivo	SIGNOR-278145
P67775	P63244	2	binding	up-regulates activity	0.2	RACK1 Mediates the Formation of the IRF3-RACK1-PP2A Complex and Promotes the Dephosphorylation of IRF3.Here we report that IRF3 is deactivated via dephosphorylation mediated by the serine and threonine phosphatase PP2A and its adaptor protein RACK1. The PP2A-RACK1 complex negatively regulated the IRF3 pathway after LPS or poly(I:C) stimulation or Sendai virus (SeV) infection.	SIGNOR-260945
O95295	O14656	2	binding	up-regulates activity	0.423	In the present study, we used yeast two-hybrid analysis to identify a new binding partner of torsinA, the SNARE-associated protein snapin. We have reported that snapin shows a robust interaction with wild type and mutant torsinA. we have demonstrated that this portion of torsinA and/or the adjacent linker region has the additional role of recruiting snapin. we found that snapin, which binds SNAP-25 (synaptosome-associated protein of 25,000 Da) and enhances the association of the SNARE complex with synaptotagmin, is an interacting partner for both wild type and mutant torsinA.	SIGNOR-261170
P20338	Q92597	2	binding	up-regulates	0.322	In this report evidence is provided that ndrg1 is a rab4a effector protein that localizes to perinuclear recycling/sorting vesicles in the trans golgi network by binding to phophatidylinositol 4-phosphate and is involved in recycling of e-cadherin. This is the first demonstration providing evidence that ndrg1 is a rab4a effector recruiting to recycling/sorting endosomes.	SIGNOR-157697
P49841	Q15853	1	phosphorylation	up-regulates activity	0.283	Although no study has yet correlated the activity of GSK3beta with the activity of USF2 in a certain tumor setting, the findings of the present study would favor the tumor promoting aspects of GSK3beta and USF2 since GSK3beta activated USF2 enhanced cell migration which may be important in terms of tumor cell metastasis.\|Together, these data show that there are two residues within USF2, namely S155 and T230, which can be phosphorylated by GSK3beta.	SIGNOR-278158
P15941	P49841	0	phosphorylation	down-regulates activity	0.456	GSK3beta binds directly to an STDRSPYE site in MUC1 and phosphorylates the serine adjacent to proline. Phosphorylation of MUC1 by GSK3beta decreases binding of MUC1 to beta-catenin in vitro and in vivo.	SIGNOR-249356
P53350	Q00613	1	phosphorylation	down-regulates	0.444	Hsf1 was phosphorylated by plk1 at ser(216) of the dsgxxs motif during the timing of mitosis and a phospho-defective mutant form of hsf1 inhibited mitotic progression. Phosphorylated hsf1 during spindle pole localization underwent ubiquitin degradation through the scf(beta-trcp) pathway.	SIGNOR-180915
Q15759	P52564	0	phosphorylation	up-regulates	0.702	The p38 mapkinasekinasemkk6 is identified as a common activator of p38 alpha, p38 beta 2, and p38 gamma mapkinaseisoforms.	SIGNOR-54947
P43403	P51452	1	phosphorylation	up-regulates activity	0.531	ZAP-70 and Syk also tyrosine-phosphorylated VHR in COS-1 cells (Fig. 2d), whereas other kinases (Csk, Lck, Fyn, Jak2, Bcr-Abl and Itk) had little effect. Finally, recombinant ZAP-70 readily phosphorylated VHR in vitro (Fig. 2f).	SIGNOR-276000
Q9Y2M5	P53355	2	binding	down-regulates quantity by destabilization	0.396	Here, we identify the BTB-Kelch protein KLHL20 as a negative regulator of DAPK. KLHL20 binds DAPK and Cullin 3 (Cul3) via its Kelch-repeat domain and BTB domain, respectively. The KLHL20-Cul3-ROC1 E3 ligase complex promotes DAPK polyubiquitination, thereby inducing the proteasomal degradation of DAPK.	SIGNOR-271960
Q13557	Q14524	1	phosphorylation	down-regulates	0.492	A stable interaction between ?(C)-camkii and the intracellular loop between domains 1 and 2 of na(v)1.5 was observed. This region was also phosphorylated by ?(C)-camkii, specifically at the ser-516 and thr-594 sites.Wild-type (wt) and phosphomutant hna(v)1.5 were co-expressed with gfp-?(C)-camkii in hek293 cells, and i(na) was recorded. As observed in myocytes, camkii shifted wt i(na) availability to a more negative membrane potential and enhanced accumulation of i(na) into an intermediate inactivated state, but these effects were abolished by mutating either of these sites to non-phosphorylatable ala residues.	SIGNOR-197058
Q14596	Q9H0R8	2	binding	up-regulates	0.741	We performed glutathione s-transferase (gst) pull-down assays using extracts from hek293 cells overexpressing an ha-tagged nbr1(d50r) mutant, which lacks the ability to bind p62 (lamark et al., 2003) (figures s1a and s1b, available online), and gst fusions of six human atg8 homologs: gabarap, gabarapl1, gabarapl2, lc3a, lc3b, and lc3c. Indeed, nbr1 interacted with all these members of the mammalian atg8 protein family	SIGNOR-184264
Q9NZV8	P42658	0	relocalization	up-regulates activity	0.548	DPPX-S reduced energy barriers of the voltage-dependent transitions; therefore, this auxiliary subunit may exert a catalytic effect on voltage-dependent gating of Kv4.2 channels. DPPX-S may also accelerate coupled inactivation indirectly	SIGNOR-269005
P51610	Q8TAK5	2	binding	down-regulates activity	0.2	The C1 factor interacts with the GABP_ transactivation domain.The domain of the C1 factor required for C1GABP interaction can inhibit GABP_dependent transcriptional activation	SIGNOR-221318
Q13418	O14950	1	phosphorylation	up-regulates activity	0.314	Integrin-linked kinase cdna was cloned, sequenced, expressed in e. coli, and shown to phosphorylate myosin light chain in the absence of ca(2+) at ser(19) and thr(18). Smooth muscle contraction follows an increase in cytosolic Ca(2+) concentration, activation of myosin light chain kinase, and phosphorylation of the 20-kDa light chain of myosin at Ser(19).Smooth muscle contraction follows an increase in cytosolic Ca(2+) concentration, activa	SIGNOR-106427
P78357	Q05655	0	phosphorylation	down-regulates activity	0.2	Inhibition of PKCdelta increased p190 activity, while PKCdelta overexpression diminished p190 activity.\|We further show that PKC\u03b4 was able to phosphorylate and bind distinct domains of p190.	SIGNOR-279260
P62805	Q4FZB7	0	methylation	down-regulates activity	0.2	SUV420H1 and SUV420H2 are two highly homologous enzymes that methylate lysine 20 of histone H4 (H4K20), a mark that has been implicated in transcriptional regulation.	SIGNOR-266651
Q9NYV6	P68400	0	phosphorylation	down-regulates	0.206	Here we show that ck2 phosphorylates the transcription initiation factor tif-ia at serines 170 and 172 (ser170/172), and this phosphorylation triggers the release of tif-ia from pol i after transcription initiation.	SIGNOR-178943
O15013	P61586	1	guanine nucleotide exchange factor	up-regulates activity	0.525	We therefore developed a screening-compatible live-cell imaging assay, using FRET-based biosensors for the prototype GTPases RHOA, RAC1 and CDC4215,19,20 (Extended Data Fig. 2 and Supplementary Note 1)\|We found catalytic activities for 45/75 RhoGEFs and 48/63 RhoGAPs\| Our data thus not only reveal extensive promiscuity among regulators, but also that the inactivating RhoGAPs are less selective than the activating RhoGEFs (p-value=0.02)(Supplementary Table 2).	SIGNOR-260535
P68400	P12259	1	phosphorylation	down-regulates activity	0.307	Factor Va, the essential cofactor for prothrombinase, is phosphorylated on the acidic COOH terminus of the heavy chain of the cofactor, at Ser692, by a platelet membrane-associated casein kinase II (CKII). \| The phosphorylated cofactor has increased susceptibility to inactivation by activated protein C, since phosphorylated factor Va was found to be inactivated approximately 3-fold faster than its native counterpart.	SIGNOR-250862
P84243	Q9UIF8	2	binding	down-regulates activity	0.2	The BAZ2B bromodomain has been shown to bind to acetylated H3K14 (H3K14ac), whose presence at promoter regions is generally associated with gene activation. This suggests a potential role for BAZ2B in transcriptional activation.	SIGNOR-266619
P08047	P28906	1	transcriptional regulation	up-regulates quantity by expression	0.263	Activation of the CD34 promoter by Sp1 requires the presence of a binding domain at -48 bp as well as the 5' untranslated region, which also binds Sp1	SIGNOR-241481
P22694	Q6PIY7	1	phosphorylation	down-regulates activity	0.2	We found that Gld2 activity is regulated by site-specific phosphorylation in its disordered N-terminal domain. We identified two phosphorylation sites (S62, S110) where phosphomimetic substitutions increased Gld2 activity and one site (S116) that markedly reduced activity. Using mass spectrometry, we confirmed that HEK 293 cells readily phosphorylate the N-terminus of Gld2. We identified protein kinase A (PKA) and protein kinase B (Akt1) as the kinases that site-specifically phosphorylate Gld2 at S116, abolishing Gld2-mediated nucleotide addition.	SIGNOR-259403
P50148	P29275	2	binding	up-regulates activity	0.4	Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. \| We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. \| The score associated to this interaction has a LogRAi ≥ -1.0.	SIGNOR-257365
P06239	Q9NRW4	0	dephosphorylation	down-regulates activity	0.273	Because JKAP dephosphorylates and inactivates Lck in T cells [ xref ], we studied whether JKAP downregulation results in Lck activation in SLE T cells.	SIGNOR-277148
Q92900	Q9HAU5	2	binding	up-regulates activity	0.979	UPF2 and UPF3b increase UPF1 ATPase activity	SIGNOR-265246
P06239	P29350	2	phosphorylation	up-regulates activity	0.613	Two sites (Y-536 and Y-564) which are directly phosphorylated by Lck in vitro are also phosphorylated in vivo in LSTRA cells. .	SIGNOR-251387
Q13418	Q96A00	1	phosphorylation	up-regulates activity	0.549	Phosphopeptide mapping, phospho amino acid analysis and immunoblotting using phospho-specific antibodies indicated that ilk predominantly phosphorylated the site critical for potent inhibition, i.e. Thr(38) of cpi-17	SIGNOR-90828
P05771	P67775	0	dephosphorylation	down-regulates activity	0.446	Specifically, the threonine at position 500 (T500) on the activation loop, and T641 and S660 on the carboxyl terminus of protein kinase C beta II are phosphorylated in vivo. T500 and S660 are selectively dephosphorylated in vitro by protein phosphatase 2A to yield an enzyme that is still capable of lipid-dependent activation, whereas all three residues are dephosphorylated by protein phosphatase 1 to yield an inactive enzyme.	SIGNOR-248620
P12931	Q9Y4D1	1	phosphorylation	up-regulates activity	0.325	Our findings reveal a novel mechanism by which reversible tyrosine phosphorylation of DAAM1 by Src and PTPN3 regulates actin dynamics and lung cancer invasiveness.\|PTPN3 suppresses lung cancer cell invasiveness by counteracting Src mediated DAAM1 activation and actin polymerization.	SIGNOR-280128
P78527	Q96T60	1	phosphorylation	up-regulates	0.649	We demonstrate that pnkp is phosphorylated by the dna-dependent protein kinase (dna-pk) and ataxia-telangiectasia mutated (atm) in vitro. The major phosphorylation site for both kinases was serine 114, with serine 126 being a minor site. Purified pnkp protein with mutation of serines 114 and 126 had decreased dna kinase and dna phosphatase activities and reduced affinity for dna in vitro.	SIGNOR-176020
Q12948	Q16539	0	phosphorylation	up-regulates quantity by stabilization	0.2	P38 interacts with and phosphorylates the Ser241 and ser272 sites of FOXC1 to maintain its stability by inhibiting ubiquitination and degradation.	SIGNOR-275913
P20339	Q92696	0	lipidation	up-regulates activity	0.625	Prenylation (or geranylgeranylation) of Rab GTPases is catalysed by RGGT (Rab geranylgeranyl transferase) and requires REP (Rab escort protein). In the classical pathway, REP associates first with unprenylated Rab, which is then prenylated by RGGT. In the alternative pathway, REP associates first with RGGT; this complex then binds and prenylates Rab proteins. Rab GTPases need to be geranylgeranylated on either one or two cysteine residues in their Ctermini in order to localize to the correct intracellular membrane and be functional	SIGNOR-265572
Q00526	P03372	1	phosphorylation	up-regulates activity	0.259	CDK3 was shown to be overexpressed in breast cancer and phosphorylate ERα at Ser104/116 and Ser118. Furthermore, we found that Mir-873 inhibits ER activity and cell growth via targeting CDK3	SIGNOR-273187
O60260	P0CG48	2	binding	up-regulates activity	0.2	Mechanism of phospho-ubiquitin-induced PARKIN activation\|PhosphoUb binding leads to straightening of a helix in the RING1 domain, and the resulting conformational changes release the Ubl domain from the PARKIN core; this activates PARKIN\|Our results show that PINK1-dependent phosphorylation of both parkin and ubiquitin is sufficient for full activation of parkin E3 activity. These findings demonstrate that phosphorylated ubiquitin is a parkin activator.	SIGNOR-249692
P12931	P50570	1	phosphorylation	down-regulates activity	0.557	We used cSrc-transformed NIH 3T3 fibroblasts to examine the effect of mutant Dyn2Y597. Similar to its effect in myotubes, Dyn2Y597F presented reduced enrichment at podosomes, whereas Dyn2Y597E clearly targeted podosome rosettes (Figures S9B and S9C). Moreover, Dyn2Y597F significantly reduced the podosome area, ECM degradation ability, and lifespan of the podosome in cSrc-transformed NIH 3T3 fibroblasts, whereas Dyn2Y597E displayed contradictory effects (Figures S9D–S9G).	SIGNOR-277539
Q15418	O00418	1	phosphorylation	down-regulates activity	0.513	We show that two such kinases, p70 s6 kinase (regulated via mtor) and p90(rsk1) (activated by erk), phosphorylate eef2k at a conserved serine and inhibit its activity	SIGNOR-109708
O43379	Q96SN8	0	relocalization	up-regulates activity	0.545	Primary microcephaly (MCPH) associated proteins CDK5RAP2, CEP152, WDR62 and CEP63 colocalize at the centrosome. We found that they interact to promote centriole duplication and form a hierarchy in which each is required to localize another to the centrosome, with CDK5RAP2 at the apex, and CEP152, WDR62 and CEP63 at sequentially lower positions. MCPH proteins interact with distinct centriolar satellite proteins; CDK5RAP2 interacts with SPAG5 and CEP72, CEP152 with CEP131, WDR62 with MOONRAKER, and CEP63 with CEP90 and CCDC14. These satellite proteins localize their cognate MCPH interactors to centrosomes and also promote centriole duplication. Consistent with a role for satellites in microcephaly, homozygous mutations in one satellite gene, CEP90, may cause MCPH. The satellite proteins, with the exception of CCDC14, and MCPH proteins promote centriole duplication by recruiting CDK2 to the centrosome.	SIGNOR-271723
P78347	P22415	2	binding	up-regulates activity	0.489	TFII-I has been shown to interact with USF and to associate with either E-box elements or initiator sequences to activate gene transcription	SIGNOR-268538
Q96Q42	P63000	2	binding	up-regulates activity	0.532	Thus, in our system, activeRac1 may recruit ALS2 only at the very early stage ofmacropinocytosis including membrane rufﬂes, suggest-ing that ALS2 is retained by some other mechanismsuntil Rab conversion.	SIGNOR-277777
Q05397	P04626	0	phosphorylation	up-regulates activity	0.657	HER2, EGFR, and additional RTKs directly phosphorylate FAK FERM at Y397.\|To further confirm the mechanism of direct FAK activation by HER2, we performed a series of GST pull-down assays with purified recombinant proteins.	SIGNOR-278475
P54132	P43246	2	binding	up-regulates	0.583	We show that the recombinant hmsh2/6 protein complex stimulated the ability of the bloom's syndrome gene product, blm, to process holliday junctions in vitro	SIGNOR-123699
Q08289	P55040	2	binding	down-regulates activity	0.2	Two functions for Gem have been demonstrated, including inhibition of voltage-gated calcium channel activity and inhibition of Rho kinase-mediated cytoskeletal reorganization, such as stress fiber formation and neurite retraction. These functions for Gem have been ascribed to its interaction with the calcium channel Β subunit and Rho kinase Β, respectively.	SIGNOR-261720
P68400	P11387	1	phosphorylation	up-regulates activity	0.383	In vitro kinase assays demonstrated that Ser(10) can be phosphorylated by casein kinase II, Ser(21) can be phosphorylated by protein kinase Calpha, and Ser(112) and Ser(394) can be phosphorylated by Cdk1.Collectively these results indicate that topo I is phosphorylated during mitosis at multiple sites, one of which enhances DNA relaxation activity in vitro and interaction with DNA in cells.	SIGNOR-276155
P08922	P29350	0	dephosphorylation	down-regulates	0.368	Overexpression of shp-1 results in ros dephosphorylation and effectively downregulates ros-dependent proliferation and transformation. We propose that shp-1 is an important downstream regulator of ros signaling.	SIGNOR-105922
P15531	Q01105	2	binding	down-regulates	0.728	Tumor suppressor nm23-h1 is a granzyme a-activated dnase during ctl-mediated apoptosis, and the nucleosome assembly protein set is its inhibitor. / nm23-h1 binds to set and is released from inhibition by gzma cleavage of set.	SIGNOR-99205
P24941	P17096	1	phosphorylation	down-regulates	0.264	Here, we found that hipk2 phosphorylates hmga1a at ser-35, thr-52, and thr-77, and hmga1b at thr-41 and thr-66. In addition, we demonstrated that cdc2, which is known to phosphorylate hmga1 proteins, could induce the phosphorylation of hmga1 proteins at the same ser/thr sites. we found that the hipk2-phosphorylated hmga1a reduced the binding affinity of hmga1a to human germ line promoter, and the drop in binding affinity induced by hipk2 phosphorylation was lower than that introduced by cdc2 phosphorylation.	SIGNOR-158612
Q13557	Q14654	1	phosphorylation	down-regulates	0.2	Results showed that activation of camkii triggered dynamin-dependent internalization of k(atp) channels. This process required phosphorylation of threonine at 180 and 224 and an intact (330)yskf(333) endocytosis motif of the k(atp) channel kir6.2 pore-forming subunit.	SIGNOR-200027
P10636	Q96L34	0	phosphorylation	down-regulates activity	0.419	AMPK phosphorylation inhibits tau binding of microtubules. In order to study further the phosphorylation of tau by AMPK, we compared phosphorylation of tau by MARK4 or AMPK using a panel of phospho-tau antibodies (Figure 2A). Five phosphorylation sites common to both kinases were identified (Thr231, Ser262, Ser356, Ser396 and Ser422). In addition, AMPK, but not MARK4, was capable of phosphorylating Ser214 (Figure 2A).	SIGNOR-273935
O43521	Q92843	2	binding	down-regulates	0.783	Bim binds prosurvival proteins comparably. The members that promote cell survival, including mammalian bcl-2, bcl-xl,bcl-w, mcl-1, and a1.	SIGNOR-133832
P31431	Q9BXY4	2	binding	up-regulates	0.422	Here, we show that rspo3 binds syndecan 4 (sdc4) and that together they activate wnt/pcp signaling.	SIGNOR-172756
P36897	P61586	1	null	up-regulates activity	0.64	Thus, TGF-_1 rapidly stimulates activity of both RhoA and Rac1 and this activation requires ALK5/T_RI kinase activity.	SIGNOR-227499
P10275	Q86UZ6	1	transcriptional regulation	down-regulates quantity by repression	0.2	Our study confirmed a novel positive association between ZBTB46 activity and LIF levels in prostate cancer tissues and cells. Under androgen regulation, low levels of ZBTB46 are an essential transcriptional factor for maintaining LIF-STAT3 signaling, while the loss of androgen signaling or inhibition of AR signaling causes LIF-enhanced therapeutic resistance and CRPC characteristics through the upregulation of ZBTB46. We also found that LIF activation drives malignant progression and NE-like reprogramming in prostate cancer by activating STAT3 signaling.	SIGNOR-277989
Q9H422	Q13158	1	phosphorylation	down-regulates activity	0.436	FIST/HIPK3 causes FADD phosphorylation, thereby promoting FIST/HIPK3-FADD-Fas interaction.¬† Phosphorylation occurs on Ser194 close to the COOH terminus of human FADD\| Fas ligand-induced activation of Jun NH(2)-terminal kinase is impaired by overexpressed active FIST/HIPK3	SIGNOR-251272
P53667	P23528	1	phosphorylation	down-regulates	0.814	Our results suggest that limk1-mediated cofilin phosphorylation is required for accurate spindle orientation by stabilizing cortical actin networks during mitosis	SIGNOR-159885
Q03113	P18089	2	binding	up-regulates activity	0.373	Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. \| We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. \| The score associated to this interaction has a LogRAi ≥ -1.0.	SIGNOR-257201
Q5TD97	Q03060	2	binding	up-regulates activity	0.665	ACT (for activator of CREM in testis), a LIM-only protein which specifically associates with CREM. ACT is expressed coordinately with CREM in a tissue- and developmentally regulated manner. It strongly stimulates CREM transcriptional activity in yeast and mammalian cells and contains an intrinsic activation function.	SIGNOR-222111
P33981	P54132	1	phosphorylation	up-regulates activity	0.315	Moreover, in mitosis, TTK promotes phosphorylation of Bloom syndrome protein (BLM) and subsequent interaction of BLM with PLK1, ensuring accurate chromosome segregation xref .\|Moreover, in mitosis, TTK promotes phosphorylation of Bloom syndrome protein and subsequent interaction of Bloom syndrome protein with PLK1, ensuring accurate chromosome segregation .	SIGNOR-280156
O75462	P26441	2	binding	up-regulates	0.39	We recently demonstrated that cardiotrophin-like cytokine (clc) associates with the soluble orphan receptor cytokine-like factor-1 (clf) to form a heterodimeric cytokine that displayed activities only on cells expressing the tripartite cntf receptor on their surface	SIGNOR-106635
Q6ISU1	P43403	2	binding	up-regulates activity	0.285	Stimulation of the T-cell antigen receptor (TCR) leads to tyrosine phosphorylation of a number of cellular proteins, including phospholipase C (PLC) gamma 1 and the TCR zeta chain. We describe here a 70-kDa tyrosine phosphoprotein (ZAP-70) that associates with zeta within 15 sec following TCR stimulation. The phosphorylation of ZAP-70 and its association with zeta is independent of the other TCR chains	SIGNOR-134325
P48764	O00141	0	phosphorylation	up-regulates activity	0.433	The NHE3 activation by SGK1 is dependent on their combined interaction with NHERF2 and then phosphorylation at S663 of NHE3 by SGK1 ( xref , xref ).	SIGNOR-279112
Q96EP1	Q13547	1	polyubiquitination	down-regulates quantity by destabilization	0.394	Histone deacetylase 1 (HDAC1), which represses transcription by deacetylating histones, was newly isolated as a Chfr-interacting protein. Chfr binds and downregulates HDAC1 by inducing its polyubiquitylation, both in vitro and in vivo. Together, these results suggest that the ubiquitin ligase activity of Chfr targets HDAC1 for degradation.	SIGNOR-271465
Q16665	O60260	0	ubiquitination	down-regulates quantity by destabilization	0.2	These results indicate that Parkin inhibits HIF-1alpha transcriptional activity.\|Ubiquitination of HIF-1alpha at lysine 477 by Parkin.	SIGNOR-278542
Q14106	P11802	0	phosphorylation	up-regulates activity	0.2	Taken together, these observations strongly support the notion that several different CDK-cyclin complexes are involved in the phosphorylation of Tob2 at S254.A more detailed regulatory context of Tob2 phosphorylation at S254 is provided by our findings from mass-spec and in vitro kinase analyses that suggest connections to PP2B and PP2C phosphatases and CDK-cyclin complexes, particularly CDK1, CDK2, and CDK4 (Table 1; Supplemental Table S2).One possibility is that the phosphorylation of S254 helps stabilize the interaction of Tob2 with the Ccr4–Not complex, which could contribute to Tob2's ability to recruit the entire Ccr4–Not complex and thus further enhances deadenylation.	SIGNOR-273602
Q99466	Q969H0	0	ubiquitination	down-regulates	0.499	We show here that the f-box/wd40 repeat protein sel-10 negatively regulates notch receptor activity by targeting the intracellular domain of notch receptors for ubiquitin-mediated protein degradation. in conclusion, hsel-10 physically associates with mouse notch4(int-3) through the wd40 domain, whereas the f-box domain is not required for this interaction.	SIGNOR-110955
Q92995	P49761	0	phosphorylation	up-regulates activity	0.2	CLK3 directly phosphorylated USP13 at Y708, which promoted its binding to c-Myc, thereby preventing Fbxl14-mediated c-Myc ubiquitination and activating the transcription of purine metabolic genes.	SIGNOR-274122
Q9UBP5	P46531	2	binding	down-regulates	0.767	Here we show that hrt2 and hes1 interact with rbp-jkappa to negatively regulate notch-dependent activation of hrt and hes expression.	SIGNOR-146690
Q13043	P31749	0	phosphorylation	down-regulates	0.397	Akt interacts with mst1 and phosphorylates a highly conserved residue threonine 120 of mst1, which leads to inhibition of its kinase activity and nuclear translocation as well as the autophosphorylation of thr(183).	SIGNOR-252507
Q99814	Q9UGL1	1	transcriptional regulation	up-regulates quantity by expression	0.283	To this end, we confirm that KDM3A, KDM4B, KDM4C, KDM5B, KDM5C, and KDM62 are direct targets of HIF-1a while extent the list of known targets to KDM2A, KDM2B, KDM4D, KDM5A, and KDM6A. The results demonstrated that majority of the KDMs were similarly induced (KDM2A, KDM2B, KDM3A, KDM4B, KDM4C, KDM4D, KDM5A, KDM5B, KDM5C, KDM6B, and KDM7A) or repressed (KDM NO66 and KDM1A) by both HIF-1a and HIF-2a.	SIGNOR-271578
Q9GZM8	Q9NRI5	2	binding	up-regulates activity	0.58	Disrupted-In-Schizophrenia 1 (DISC1) is a candidate gene for susceptibility to schizophrenia. DISC1 is reported to interact with NudE-like (NUDEL), which forms a complex with lissencephaly-1 (LIS1) and 14-3-3ε. 14-3-3ε is involved in the proper localization of NUDEL and LIS1 in axons. the association with NUDEL and LIS1 supports the notion that DISC1 contributes to the neuronal development and morphology	SIGNOR-252162
O75914	O75914	2	phosphorylation	up-regulates activity	0.2	Both in vivo and in vitro analyses demonstrate that, although most phosphorylation events in the PAK N-terminal regulatory domain play no direct role in activation, a phosphorylation of alphaPAK serine 144 or betaPAK serine 139, which lie in the kinase inhibitory domain, significantly contribute to activation.	SIGNOR-250245
Q13535	P35790	1	phosphorylation	up-regulates activity	0.248	In particular, ATR phosphorylates Chk 1 and ATM signals to Chk 2.	SIGNOR-280184
O15111	P49815	1	phosphorylation	down-regulates	0.296	Insulin activation of mtor requires akt in a manner that involves ikkalpha, preferentially to ikkbeta, and tsc2 phosphorylation	SIGNOR-178664
Q5VT25	P10916	1	phosphorylation	up-regulates activity	0.65	These approximately 190-kDa myotonic dystrophy kinase-related Cdc42-binding kinases (MRCKs) preferentially phosphorylate nonmuscle myosin light chain at serine 19, which is known to be crucial for activating actin-myosin contractility.	SIGNOR-250723
O95390	Q13705	2	binding	up-regulates	0.625	Here we demonstrate using genetic and biochemical studies that actriib and its subfamily receptor, actriia, cooperatively mediate the gdf11 signal in patterning the axial vertebrae, and that gdf11 binds to both actriia and actriib, and induces phosphorylation of smad2	SIGNOR-95309
Q86V86	O95644	1	phosphorylation	up-regulates activity	0.246	In addition to PIM1, also PIM2 and PIM3 were able to phosphorylate WT, but not MM NFATC1 in vitro (Fig. (Fig.22c).	SIGNOR-276773
P15056	P17612	0	phosphorylation	down-regulates activity	0.635	Direct phosphorylation of B-Raf by PKA exerts a negative effect on its kinase activity, essentially via phosphorylation of Ser429	SIGNOR-250339
Q9Y5Z0	P05067	1	cleavage	up-regulates activity	0.544	BACE2, a beta -secretase homolog, cleaves at the beta site and within the amyloid-beta region of the amyloid-beta precursor protein.\|Figure 6 Preferred BACE1 and BACE2 cleavage sites. (A) Sequence of APP indicating Î±- and Î²-cleavage sites, BACE1- and BACE2-cleavage sites, and the location of mutations analyzed here. APP numbering is that of the 770-aa isoform.	SIGNOR-261773
P60953	O14827	0	guanine nucleotide exchange factor	up-regulates activity	0.554	We therefore developed a screening-compatible live-cell imaging assay, using FRET-based biosensors for the prototype GTPases RHOA, RAC1 and CDC4215,19,20 (Extended Data Fig. 2 and Supplementary Note 1)\|We found catalytic activities for 45/75 RhoGEFs and 48/63 RhoGAPs\| Our data thus not only reveal extensive promiscuity among regulators, but also that the inactivating RhoGAPs are less selective than the activating RhoGEFs (p-value=0.02)(Supplementary Table 2).	SIGNOR-260575

O15151

2

ubiquitination

down-regulates quantity by destabilization

0.2

Here we demonstrate that MdmX acts as a ubiquitin ligase in vitro, being capable of autoubiquitination, as well as mediating the ubiquitination of p53.

SIGNOR-271390

P38398

Q9BXW9

1

ubiquitination

up-regulates activity

0.845

The major genetic evidence supporting ubiquitin ligase function for BRCA1 in vivo comes from studies on the FANCD2 protein. Whereas in wild‐type cells the FANCD2 protein co‐localizes with BRCA1 in nuclear foci and becomes monoubiquitylated in response to DNA damage, HCC1937 cells, which encode a mutated form of BRCA1, are largely defective for both monoubiquitylation of FANCD2 and foci formation

SIGNOR-263236

O95837

P30556

2

binding

up-regulates activity

0.49

Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. | We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. | The score associated to this interaction has a LogRAi ≥ -1.0.

SIGNOR-257133

P05783

P06493

0

phosphorylation

up-regulates

0.338

We identified k18 ser33 as an interphase phosphorylation site, which increases its phosphorylation during mitosis in cultured cells and regenerating liver, and as an in vitro cdc2 kinase phosphorylation site. K18 ser33 phosphorylation dictates binding to 14_3_3 proteins

SIGNOR-55994

Q01344

O60674

1

phosphorylation

up-regulates activity

0.602

Jak 2 is physically associated with the IL-5b receptor. The binding of IL-5 to its receptor results in tyrosine phosphorylation and activation of Jak 2 tyrosine kinase within 1 to 3 min.

SIGNOR-254352

Q12913

P36888

1

dephosphorylation

down-regulates activity

0.49

Moreover, activated FLT3 could be dephosphorylated by recombinant DEP-1 in vitro.|The data indicate that DEP-1 is negatively regulating FLT3 signaling activity and that its loss may contribute to but is not sufficient for leukemogenic cell transformation.

SIGNOR-277092

P38936

Q9UHC7

0

polyubiquitination

down-regulates quantity by destabilization

0.313

Makorin Ring Finger Protein 1 (MKRN1) is a transcriptional co-regulator and an E3 ligase. Here, we show that MKRN1 simultaneously functions as a differentially negative regulator of p53 and p21. In normal conditions, MKRN1 could destabilize both p53 and p21 through ubiquitination and proteasome-dependent degradation. As a result, depletion of MKRN1 induced growth arrest through activation of p53 and p21.

SIGNOR-271845

O00716

Q14186

2

binding

up-regulates activity

0.74

The transcriptionally active forms of E2F are heterodimers composed of one polypeptide encoded by the E2F gene family and one polypeptide encoded by the DP gene family.In transfected cells, DP-1 did not accumulate in the nucleus unless it was coexpressed with the heterodimeric partners E2F-1, E2F-2, or E2F-3.

SIGNOR-240553

P28336

P63092

2

binding

up-regulates activity

0.25

Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. | We defined positive coupling if any member of the subfamily scored LogRAi ‚â• -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ‚â• -1.0 for defining true couplings. | The score associated to this interaction has a LogRAi ‚â• -1.0.

SIGNOR-256775

P29475

Q9UQM7

0

phosphorylation

down-regulates activity

0.471

It was found that purified recombinant nNOS was phosphorylated by CaM-K Ialpha, CaM-K IIalpha, and CaM-K IV at Ser847 in vitro. Replacement of Ser847 with Ala (S847A) prevented phosphorylation by CaM kinases. Phosphorylated recombinant wild-type nNOS at Ser847 (approximately 0.5 mol of phosphate incorporation into nNOS) exhibited a 30% decrease of Vmax with little change of both the Km for L-arginine and Kact for CaM relative to unphosphorylated enzyme. The activity of mutant S847D was decreased to a level 50-60% as much as the wild-type enzyme. The decreased NOS enzyme activity of phosphorylated nNOS at Ser847 and mutant S847D was partially due to suppression of CaM binding, but not to impairment of dimer formation which is thought to be essential for enzyme activation.

SIGNOR-250635

O00327

Q07869

2

transcriptional regulation

up-regulates quantity by expression

0.596

We demonstrate that PPARalpha plays a specific role in the peripheral circadian control because it is required to maintain the circadian rhythm of the master clock gene brain and muscle Arnt-like protein 1 (bmal1) in vivo. This regulation occurs via a direct binding of PPARalpha on a potential PPARalpha response element located in the bmal1 promoter. Reversely, BMAL1 is an upstream regulator of PPARalpha gene expression.

SIGNOR-268025

P28221

P08754

2

binding

up-regulates activity

0.435

Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. | We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. | The score associated to this interaction has a LogRAi ≥ -1.0.

SIGNOR-256864

Q96QT6

Q04725

2

binding

up-regulates activity

0.2

We have cloned and characterized a new member of the PHD zinc finger family called Pf1 that interacts with two global transcription corepressors: mSin3A and TLE. Pf1 interacts with TLE. The Groucho/TLE proteins are members of an abundant corepressor family, and we hypothesized that Pf1 might interact with TLE family members. Together, these data suggest that in the absence of interactions with mSin3A, Gal4-Pf1 (102–273 L212P/A216P)-dependent repression can be attributed to interaction with endogenous TLE.

SIGNOR-266992

P41231

P38405

2

binding

up-regulates activity

0.2

Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. | We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. | The score associated to this interaction has a LogRAi ≥ -1.0.

SIGNOR-256902

Q15485

P48740

2

binding

up-regulates activity

0.788

H-ficolin binds to PSA, a polysaccharide produced by Aerococcus viridans. C4 was activated by H-ficolin preparations bound to PSA which had been coated on ELISA plates. These results indicate that H-ficolin is a second ficolin which is associated with MASPs and sMAP, and which activates the lectin pathway|Proteolytic activation of complement components by H-ficolin-MASP.

SIGNOR-263411

P43116

P38405

2

binding

up-regulates activity

0.25

Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. | We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. | The score associated to this interaction has a LogRAi ≥ -1.0.

SIGNOR-256899

P28482

P10828

1

phosphorylation

down-regulates activity

0.412

We concluded that serine 142 of the tr dbd is the likely site of phosphorylation by t(4)-activated mapk and that the docking site on tr for activated mapk includes residues 128-133 (kgffrr), a basic amino acid-enriched motif novel for mapk substrates. Tr mutations in the proposed mapk docking domain and at residue 142 modulated t(4)-conditioned shedding of co-repressor and recruitment of co-activator proteins by the receptor, and they altered transcriptional activity of tr in a thyroid hormone response element-luciferase reporter assay.

SIGNOR-102216

P53350

P30291

1

phosphorylation

down-regulates quantity by destabilization

0.642

In the present study, we show that phosphorylation of S123 (pS123) by CDK promoted the binding of Wee1A to beta-TrCP through three independent mechanisms. S123 phosphorylation creates a PBD-binding motif and accelerates S53 phosphorylation by Plk1.

SIGNOR-276040

P18858

P06493

0

phosphorylation

up-regulates activity

0.364

We show that three residues (ser51, ser76, and ser91), which are part of cyclin-dependent kinase sites, are phosphorylated in a cell cycle-dependent manner.

SIGNOR-103242

P16220

O75030

1

transcriptional regulation

up-regulates quantity by expression

0.633

Therefore, the molecular steps linking cAMPto melanogenesis up-regulation appear currently better elucidated. cAMP activates PKA, and PKA phosphorylates and activates CREB which, when activated, binds to the CRE domain present in the microphthalmia promoter,thereby up-regulating its transcription.

SIGNOR-249619

Q9Y6W6

P45983

1

dephosphorylation

down-regulates

0.705

Mkp-5 directly dephosphorylates sapk/jnk and p38 in vitromkp-5 binds to p38 and sapk/jnk, but not to mapk/erk, and inactivates p38 and sapk/jnk

SIGNOR-68986

Q9Y4H2

P16220

0

transcriptional regulation

up-regulates quantity by expression

0.342

Taken together, these results indicate that the IRS2 gene is a direct target for CREB action in vivo

SIGNOR-278145

P67775

P63244

2

binding

up-regulates activity

0.2

RACK1 Mediates the Formation of the IRF3-RACK1-PP2A Complex and Promotes the Dephosphorylation of IRF3.Here we report that IRF3 is deactivated via dephosphorylation mediated by the serine and threonine phosphatase PP2A and its adaptor protein RACK1. The PP2A-RACK1 complex negatively regulated the IRF3 pathway after LPS or poly(I:C) stimulation or Sendai virus (SeV) infection.

SIGNOR-260945

O95295

O14656

2

binding

up-regulates activity

0.423

In the present study, we used yeast two-hybrid analysis to identify a new binding partner of torsinA, the SNARE-associated protein snapin. We have reported that snapin shows a robust interaction with wild type and mutant torsinA. we have demonstrated that this portion of torsinA and/or the adjacent linker region has the additional role of recruiting snapin. we found that snapin, which binds SNAP-25 (synaptosome-associated protein of 25,000 Da) and enhances the association of the SNARE complex with synaptotagmin, is an interacting partner for both wild type and mutant torsinA.

SIGNOR-261170

P20338

Q92597

2

binding

up-regulates

0.322

In this report evidence is provided that ndrg1 is a rab4a effector protein that localizes to perinuclear recycling/sorting vesicles in the trans golgi network by binding to phophatidylinositol 4-phosphate and is involved in recycling of e-cadherin. This is the first demonstration providing evidence that ndrg1 is a rab4a effector recruiting to recycling/sorting endosomes.

SIGNOR-157697

P49841

Q15853

1

phosphorylation

up-regulates activity

0.283

Although no study has yet correlated the activity of GSK3beta with the activity of USF2 in a certain tumor setting, the findings of the present study would favor the tumor promoting aspects of GSK3beta and USF2 since GSK3beta activated USF2 enhanced cell migration which may be important in terms of tumor cell metastasis.|Together, these data show that there are two residues within USF2, namely S155 and T230, which can be phosphorylated by GSK3beta.

SIGNOR-278158

P15941

P49841

0

phosphorylation

down-regulates activity

0.456

GSK3beta binds directly to an STDRSPYE site in MUC1 and phosphorylates the serine adjacent to proline. Phosphorylation of MUC1 by GSK3beta decreases binding of MUC1 to beta-catenin in vitro and in vivo.

SIGNOR-249356

P53350

Q00613

1

phosphorylation

down-regulates

0.444

Hsf1 was phosphorylated by plk1 at ser(216) of the dsgxxs motif during the timing of mitosis and a phospho-defective mutant form of hsf1 inhibited mitotic progression. Phosphorylated hsf1 during spindle pole localization underwent ubiquitin degradation through the scf(beta-trcp) pathway.

SIGNOR-180915

Q15759

P52564

0

phosphorylation

up-regulates

0.702

The p38 mapkinasekinasemkk6 is identified as a common activator of p38 alpha, p38 beta 2, and p38 gamma mapkinaseisoforms.

SIGNOR-54947

P43403

P51452

1

phosphorylation

up-regulates activity

0.531

ZAP-70 and Syk also tyrosine-phosphorylated VHR in COS-1 cells (Fig. 2d), whereas other kinases (Csk, Lck, Fyn, Jak2, Bcr-Abl and Itk) had little effect. Finally, recombinant ZAP-70 readily phosphorylated VHR in vitro (Fig. 2f).

SIGNOR-276000

Q9Y2M5

P53355

2

binding

down-regulates quantity by destabilization

0.396

Here, we identify the BTB-Kelch protein KLHL20 as a negative regulator of DAPK. KLHL20 binds DAPK and Cullin 3 (Cul3) via its Kelch-repeat domain and BTB domain, respectively. The KLHL20-Cul3-ROC1 E3 ligase complex promotes DAPK polyubiquitination, thereby inducing the proteasomal degradation of DAPK.

SIGNOR-271960

Q13557

Q14524

1

phosphorylation

down-regulates

0.492

A stable interaction between ?(C)-camkii and the intracellular loop between domains 1 and 2 of na(v)1.5 was observed. This region was also phosphorylated by ?(C)-camkii, specifically at the ser-516 and thr-594 sites.Wild-type (wt) and phosphomutant hna(v)1.5 were co-expressed with gfp-?(C)-camkii in hek293 cells, and i(na) was recorded. As observed in myocytes, camkii shifted wt i(na) availability to a more negative membrane potential and enhanced accumulation of i(na) into an intermediate inactivated state, but these effects were abolished by mutating either of these sites to non-phosphorylatable ala residues.

SIGNOR-197058

Q14596

Q9H0R8

2

binding

up-regulates

0.741

We performed glutathione s-transferase (gst) pull-down assays using extracts from hek293 cells overexpressing an ha-tagged nbr1(d50r) mutant, which lacks the ability to bind p62 (lamark et al., 2003) (figures s1a and s1b, available online), and gst fusions of six human atg8 homologs: gabarap, gabarapl1, gabarapl2, lc3a, lc3b, and lc3c. Indeed, nbr1 interacted with all these members of the mammalian atg8 protein family

SIGNOR-184264

Q9NZV8

P42658

0

relocalization

up-regulates activity

0.548

DPPX-S reduced energy barriers of the voltage-dependent transitions; therefore, this auxiliary subunit may exert a catalytic effect on voltage-dependent gating of Kv4.2 channels. DPPX-S may also accelerate coupled inactivation indirectly

SIGNOR-269005

P51610

Q8TAK5

2

binding

down-regulates activity

0.2

The C1 factor interacts with the GABP_ transactivation domain.The domain of the C1 factor required for C1GABP interaction can inhibit GABP_dependent transcriptional activation

SIGNOR-221318

Q13418

O14950

1

phosphorylation

up-regulates activity

0.314

Integrin-linked kinase cdna was cloned, sequenced, expressed in e. coli, and shown to phosphorylate myosin light chain in the absence of ca(2+) at ser(19) and thr(18). Smooth muscle contraction follows an increase in cytosolic Ca(2+) concentration, activation of myosin light chain kinase, and phosphorylation of the 20-kDa light chain of myosin at Ser(19).Smooth muscle contraction follows an increase in cytosolic Ca(2+) concentration, activa

SIGNOR-106427

P78357

Q05655

0

phosphorylation

down-regulates activity

0.2

Inhibition of PKCdelta increased p190 activity, while PKCdelta overexpression diminished p190 activity.|We further show that PKC\u03b4 was able to phosphorylate and bind distinct domains of p190.

SIGNOR-279260

P62805

Q4FZB7

0

methylation

down-regulates activity

0.2

SUV420H1 and SUV420H2 are two highly homologous enzymes that methylate lysine 20 of histone H4 (H4K20), a mark that has been implicated in transcriptional regulation.

SIGNOR-266651

Q9NYV6

P68400

0

phosphorylation

down-regulates

0.206

Here we show that ck2 phosphorylates the transcription initiation factor tif-ia at serines 170 and 172 (ser170/172), and this phosphorylation triggers the release of tif-ia from pol i after transcription initiation.

SIGNOR-178943

O15013

P61586

1

guanine nucleotide exchange factor

up-regulates activity

0.525

We therefore developed a screening-compatible live-cell imaging assay, using FRET-based biosensors for the prototype GTPases RHOA, RAC1 and CDC4215,19,20 (Extended Data Fig. 2 and Supplementary Note 1)|We found catalytic activities for 45/75 RhoGEFs and 48/63 RhoGAPs| Our data thus not only reveal extensive promiscuity among regulators, but also that the inactivating RhoGAPs are less selective than the activating RhoGEFs (p-value=0.02)(Supplementary Table 2).

SIGNOR-260535

P68400

P12259

1

phosphorylation

down-regulates activity

0.307

Factor Va, the essential cofactor for prothrombinase, is phosphorylated on the acidic COOH terminus of the heavy chain of the cofactor, at Ser692, by a platelet membrane-associated casein kinase II (CKII). | The phosphorylated cofactor has increased susceptibility to inactivation by activated protein C, since phosphorylated factor Va was found to be inactivated approximately 3-fold faster than its native counterpart.

SIGNOR-250862

P84243

Q9UIF8

2

binding

down-regulates activity

0.2

The BAZ2B bromodomain has been shown to bind to acetylated H3K14 (H3K14ac), whose presence at promoter regions is generally associated with gene activation. This suggests a potential role for BAZ2B in transcriptional activation.

SIGNOR-266619

P08047

P28906

1

transcriptional regulation

up-regulates quantity by expression

0.263

Activation of the CD34 promoter by Sp1 requires the presence of a binding domain at -48 bp as well as the 5' untranslated region, which also binds Sp1

SIGNOR-241481

P22694

Q6PIY7

1

phosphorylation

down-regulates activity

0.2

We found that Gld2 activity is regulated by site-specific phosphorylation in its disordered N-terminal domain. We identified two phosphorylation sites (S62, S110) where phosphomimetic substitutions increased Gld2 activity and one site (S116) that markedly reduced activity. Using mass spectrometry, we confirmed that HEK 293 cells readily phosphorylate the N-terminus of Gld2. We identified protein kinase A (PKA) and protein kinase B (Akt1) as the kinases that site-specifically phosphorylate Gld2 at S116, abolishing Gld2-mediated nucleotide addition.

SIGNOR-259403

P50148

P29275

2

binding

up-regulates activity

0.4

Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. | We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. | The score associated to this interaction has a LogRAi ≥ -1.0.

SIGNOR-257365

P06239

Q9NRW4

0

dephosphorylation

down-regulates activity

0.273

Because JKAP dephosphorylates and inactivates Lck in T cells [ xref ], we studied whether JKAP downregulation results in Lck activation in SLE T cells.

SIGNOR-277148

Q92900

Q9HAU5

2

binding

up-regulates activity

0.979

UPF2 and UPF3b increase UPF1 ATPase activity

SIGNOR-265246

P06239

P29350

2

phosphorylation

up-regulates activity

0.613

Two sites (Y-536 and Y-564) which are directly phosphorylated by Lck in vitro are also phosphorylated in vivo in LSTRA cells. .

SIGNOR-251387

Q13418

Q96A00

1

phosphorylation

up-regulates activity

0.549

Phosphopeptide mapping, phospho amino acid analysis and immunoblotting using phospho-specific antibodies indicated that ilk predominantly phosphorylated the site critical for potent inhibition, i.e. Thr(38) of cpi-17

SIGNOR-90828

P05771

P67775

0

dephosphorylation

down-regulates activity

0.446

Specifically, the threonine at position 500 (T500) on the activation loop, and T641 and S660 on the carboxyl terminus of protein kinase C beta II are phosphorylated in vivo. T500 and S660 are selectively dephosphorylated in vitro by protein phosphatase 2A to yield an enzyme that is still capable of lipid-dependent activation, whereas all three residues are dephosphorylated by protein phosphatase 1 to yield an inactive enzyme.

SIGNOR-248620

P12931

Q9Y4D1

1

phosphorylation

up-regulates activity

0.325

Our findings reveal a novel mechanism by which reversible tyrosine phosphorylation of DAAM1 by Src and PTPN3 regulates actin dynamics and lung cancer invasiveness.|PTPN3 suppresses lung cancer cell invasiveness by counteracting Src mediated DAAM1 activation and actin polymerization.

SIGNOR-280128

P78527

Q96T60

1

phosphorylation

up-regulates

0.649

We demonstrate that pnkp is phosphorylated by the dna-dependent protein kinase (dna-pk) and ataxia-telangiectasia mutated (atm) in vitro. The major phosphorylation site for both kinases was serine 114, with serine 126 being a minor site. Purified pnkp protein with mutation of serines 114 and 126 had decreased dna kinase and dna phosphatase activities and reduced affinity for dna in vitro.

SIGNOR-176020

Q12948

Q16539

0

phosphorylation

up-regulates quantity by stabilization

0.2

P38 interacts with and phosphorylates the Ser241 and ser272 sites of FOXC1 to maintain its stability by inhibiting ubiquitination and degradation.

SIGNOR-275913

P20339

Q92696

0

lipidation

up-regulates activity

0.625

Prenylation (or geranylgeranylation) of Rab GTPases is catalysed by RGGT (Rab geranylgeranyl transferase) and requires REP (Rab escort protein). In the classical pathway, REP associates first with unprenylated Rab, which is then prenylated by RGGT. In the alternative pathway, REP associates first with RGGT; this complex then binds and prenylates Rab proteins. Rab GTPases need to be geranylgeranylated on either one or two cysteine residues in their Ctermini in order to localize to the correct intracellular membrane and be functional

SIGNOR-265572

Q00526

P03372

1

phosphorylation

up-regulates activity

0.259

CDK3 was shown to be overexpressed in breast cancer and phosphorylate ERα at Ser104/116 and Ser118. Furthermore, we found that Mir-873 inhibits ER activity and cell growth via targeting CDK3

SIGNOR-273187

O60260

P0CG48

2

binding

up-regulates activity

0.2

Mechanism of phospho-ubiquitin-induced PARKIN activation|PhosphoUb binding leads to straightening of a helix in the RING1 domain, and the resulting conformational changes release the Ubl domain from the PARKIN core; this activates PARKIN|Our results show that PINK1-dependent phosphorylation of both parkin and ubiquitin is sufficient for full activation of parkin E3 activity. These findings demonstrate that phosphorylated ubiquitin is a parkin activator.

SIGNOR-249692

P12931

P50570

1

phosphorylation

down-regulates activity

0.557

We used cSrc-transformed NIH 3T3 fibroblasts to examine the effect of mutant Dyn2Y597. Similar to its effect in myotubes, Dyn2Y597F presented reduced enrichment at podosomes, whereas Dyn2Y597E clearly targeted podosome rosettes (Figures S9B and S9C). Moreover, Dyn2Y597F significantly reduced the podosome area, ECM degradation ability, and lifespan of the podosome in cSrc-transformed NIH 3T3 fibroblasts, whereas Dyn2Y597E displayed contradictory effects (Figures S9D–S9G).

SIGNOR-277539

Q15418

O00418

1

phosphorylation

down-regulates activity

0.513

We show that two such kinases, p70 s6 kinase (regulated via mtor) and p90(rsk1) (activated by erk), phosphorylate eef2k at a conserved serine and inhibit its activity

SIGNOR-109708

O43379

Q96SN8

0

relocalization

up-regulates activity

0.545

Primary microcephaly (MCPH) associated proteins CDK5RAP2, CEP152, WDR62 and CEP63 colocalize at the centrosome. We found that they interact to promote centriole duplication and form a hierarchy in which each is required to localize another to the centrosome, with CDK5RAP2 at the apex, and CEP152, WDR62 and CEP63 at sequentially lower positions. MCPH proteins interact with distinct centriolar satellite proteins; CDK5RAP2 interacts with SPAG5 and CEP72, CEP152 with CEP131, WDR62 with MOONRAKER, and CEP63 with CEP90 and CCDC14. These satellite proteins localize their cognate MCPH interactors to centrosomes and also promote centriole duplication. Consistent with a role for satellites in microcephaly, homozygous mutations in one satellite gene, CEP90, may cause MCPH. The satellite proteins, with the exception of CCDC14, and MCPH proteins promote centriole duplication by recruiting CDK2 to the centrosome.

SIGNOR-271723

P78347

P22415

2

binding

up-regulates activity

0.489

TFII-I has been shown to interact with USF and to associate with either E-box elements or initiator sequences to activate gene transcription

SIGNOR-268538

Q96Q42

P63000

2

binding

up-regulates activity

0.532

Thus, in our system, activeRac1 may recruit ALS2 only at the very early stage ofmacropinocytosis including membrane rufﬂes, suggest-ing that ALS2 is retained by some other mechanismsuntil Rab conversion.

SIGNOR-277777

Q05397

P04626

0

phosphorylation

up-regulates activity

0.657

HER2, EGFR, and additional RTKs directly phosphorylate FAK FERM at Y397.|To further confirm the mechanism of direct FAK activation by HER2, we performed a series of GST pull-down assays with purified recombinant proteins.

SIGNOR-278475

P54132

P43246

2

binding

up-regulates

0.583

We show that the recombinant hmsh2/6 protein complex stimulated the ability of the bloom's syndrome gene product, blm, to process holliday junctions in vitro

SIGNOR-123699

Q08289

P55040

2

binding

down-regulates activity

0.2

Two functions for Gem have been demonstrated, including inhibition of voltage-gated calcium channel activity and inhibition of Rho kinase-mediated cytoskeletal reorganization, such as stress fiber formation and neurite retraction. These functions for Gem have been ascribed to its interaction with the calcium channel Β subunit and Rho kinase Β, respectively.

SIGNOR-261720

P68400

P11387

1

phosphorylation

up-regulates activity

0.383

In vitro kinase assays demonstrated that Ser(10) can be phosphorylated by casein kinase II, Ser(21) can be phosphorylated by protein kinase Calpha, and Ser(112) and Ser(394) can be phosphorylated by Cdk1.Collectively these results indicate that topo I is phosphorylated during mitosis at multiple sites, one of which enhances DNA relaxation activity in vitro and interaction with DNA in cells.

SIGNOR-276155

P08922

P29350

0

dephosphorylation

down-regulates

0.368

Overexpression of shp-1 results in ros dephosphorylation and effectively downregulates ros-dependent proliferation and transformation. We propose that shp-1 is an important downstream regulator of ros signaling.

SIGNOR-105922

P15531

Q01105

2

binding

down-regulates

0.728

Tumor suppressor nm23-h1 is a granzyme a-activated dnase during ctl-mediated apoptosis, and the nucleosome assembly protein set is its inhibitor. / nm23-h1 binds to set and is released from inhibition by gzma cleavage of set.

SIGNOR-99205

P24941

P17096

1

phosphorylation

down-regulates

0.264

Here, we found that hipk2 phosphorylates hmga1a at ser-35, thr-52, and thr-77, and hmga1b at thr-41 and thr-66. In addition, we demonstrated that cdc2, which is known to phosphorylate hmga1 proteins, could induce the phosphorylation of hmga1 proteins at the same ser/thr sites. we found that the hipk2-phosphorylated hmga1a reduced the binding affinity of hmga1a to human germ line promoter, and the drop in binding affinity induced by hipk2 phosphorylation was lower than that introduced by cdc2 phosphorylation.

SIGNOR-158612

Q13557

Q14654

1

phosphorylation

down-regulates

0.2

Results showed that activation of camkii triggered dynamin-dependent internalization of k(atp) channels. This process required phosphorylation of threonine at 180 and 224 and an intact (330)yskf(333) endocytosis motif of the k(atp) channel kir6.2 pore-forming subunit.

SIGNOR-200027

P10636

Q96L34

0

phosphorylation

down-regulates activity

0.419

AMPK phosphorylation inhibits tau binding of microtubules. In order to study further the phosphorylation of tau by AMPK, we compared phosphorylation of tau by MARK4 or AMPK using a panel of phospho-tau antibodies (Figure 2A). Five phosphorylation sites common to both kinases were identified (Thr231, Ser262, Ser356, Ser396 and Ser422). In addition, AMPK, but not MARK4, was capable of phosphorylating Ser214 (Figure 2A).

SIGNOR-273935

O43521

Q92843

2

binding

down-regulates

0.783

Bim binds prosurvival proteins comparably. The members that promote cell survival, including mammalian bcl-2, bcl-xl,bcl-w, mcl-1, and a1.

SIGNOR-133832

P31431

Q9BXY4

2

binding

up-regulates

0.422

Here, we show that rspo3 binds syndecan 4 (sdc4) and that together they activate wnt/pcp signaling.

SIGNOR-172756

P36897

P61586

1

null

up-regulates activity

0.64

Thus, TGF-_1 rapidly stimulates activity of both RhoA and Rac1 and this activation requires ALK5/T_RI kinase activity.

SIGNOR-227499

P10275

Q86UZ6

1

transcriptional regulation

down-regulates quantity by repression

0.2

Our study confirmed a novel positive association between ZBTB46 activity and LIF levels in prostate cancer tissues and cells. Under androgen regulation, low levels of ZBTB46 are an essential transcriptional factor for maintaining LIF-STAT3 signaling, while the loss of androgen signaling or inhibition of AR signaling causes LIF-enhanced therapeutic resistance and CRPC characteristics through the upregulation of ZBTB46. We also found that LIF activation drives malignant progression and NE-like reprogramming in prostate cancer by activating STAT3 signaling.

SIGNOR-277989

Q9H422

Q13158

1

phosphorylation

down-regulates activity

0.436

FIST/HIPK3 causes FADD phosphorylation, thereby promoting FIST/HIPK3-FADD-Fas interaction.¬† Phosphorylation occurs on Ser194 close to the COOH terminus of human FADD| Fas ligand-induced activation of Jun NH(2)-terminal kinase is impaired by overexpressed active FIST/HIPK3

SIGNOR-251272

P53667

P23528

1

phosphorylation

down-regulates

0.814

Our results suggest that limk1-mediated cofilin phosphorylation is required for accurate spindle orientation by stabilizing cortical actin networks during mitosis

SIGNOR-159885

Q03113

P18089

2

binding

up-regulates activity

0.373

Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. | We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. | The score associated to this interaction has a LogRAi ≥ -1.0.

SIGNOR-257201

Q5TD97

Q03060

2

binding

up-regulates activity

0.665

ACT (for activator of CREM in testis), a LIM-only protein which specifically associates with CREM. ACT is expressed coordinately with CREM in a tissue- and developmentally regulated manner. It strongly stimulates CREM transcriptional activity in yeast and mammalian cells and contains an intrinsic activation function.

SIGNOR-222111

P33981

P54132

1

phosphorylation

up-regulates activity

0.315

Moreover, in mitosis, TTK promotes phosphorylation of Bloom syndrome protein (BLM) and subsequent interaction of BLM with PLK1, ensuring accurate chromosome segregation xref .|Moreover, in mitosis, TTK promotes phosphorylation of Bloom syndrome protein and subsequent interaction of Bloom syndrome protein with PLK1, ensuring accurate chromosome segregation .

SIGNOR-280156

O75462

P26441

2

binding

up-regulates

0.39

We recently demonstrated that cardiotrophin-like cytokine (clc) associates with the soluble orphan receptor cytokine-like factor-1 (clf) to form a heterodimeric cytokine that displayed activities only on cells expressing the tripartite cntf receptor on their surface

SIGNOR-106635

Q6ISU1

P43403

2

binding

up-regulates activity

0.285

Stimulation of the T-cell antigen receptor (TCR) leads to tyrosine phosphorylation of a number of cellular proteins, including phospholipase C (PLC) gamma 1 and the TCR zeta chain. We describe here a 70-kDa tyrosine phosphoprotein (ZAP-70) that associates with zeta within 15 sec following TCR stimulation. The phosphorylation of ZAP-70 and its association with zeta is independent of the other TCR chains

SIGNOR-134325

P48764

O00141

0

phosphorylation

up-regulates activity

0.433

The NHE3 activation by SGK1 is dependent on their combined interaction with NHERF2 and then phosphorylation at S663 of NHE3 by SGK1 ( xref , xref ).

SIGNOR-279112

Q96EP1

Q13547

1

polyubiquitination

down-regulates quantity by destabilization

0.394

Histone deacetylase 1 (HDAC1), which represses transcription by deacetylating histones, was newly isolated as a Chfr-interacting protein. Chfr binds and downregulates HDAC1 by inducing its polyubiquitylation, both in vitro and in vivo. Together, these results suggest that the ubiquitin ligase activity of Chfr targets HDAC1 for degradation.

SIGNOR-271465

Q16665

O60260

0

ubiquitination

down-regulates quantity by destabilization

0.2

These results indicate that Parkin inhibits HIF-1alpha transcriptional activity.|Ubiquitination of HIF-1alpha at lysine 477 by Parkin.

SIGNOR-278542

Q14106

P11802

0

phosphorylation

up-regulates activity

0.2

Taken together, these observations strongly support the notion that several different CDK-cyclin complexes are involved in the phosphorylation of Tob2 at S254.A more detailed regulatory context of Tob2 phosphorylation at S254 is provided by our findings from mass-spec and in vitro kinase analyses that suggest connections to PP2B and PP2C phosphatases and CDK-cyclin complexes, particularly CDK1, CDK2, and CDK4 (Table 1; Supplemental Table S2).One possibility is that the phosphorylation of S254 helps stabilize the interaction of Tob2 with the Ccr4–Not complex, which could contribute to Tob2's ability to recruit the entire Ccr4–Not complex and thus further enhances deadenylation.

SIGNOR-273602

Q99466

Q969H0

0

ubiquitination

down-regulates

0.499

We show here that the f-box/wd40 repeat protein sel-10 negatively regulates notch receptor activity by targeting the intracellular domain of notch receptors for ubiquitin-mediated protein degradation. in conclusion, hsel-10 physically associates with mouse notch4(int-3) through the wd40 domain, whereas the f-box domain is not required for this interaction.

SIGNOR-110955

Q92995

P49761

0

phosphorylation

up-regulates activity

0.2

CLK3 directly phosphorylated USP13 at Y708, which promoted its binding to c-Myc, thereby preventing Fbxl14-mediated c-Myc ubiquitination and activating the transcription of purine metabolic genes.

SIGNOR-274122

Q9UBP5

P46531

2

binding

down-regulates

0.767

Here we show that hrt2 and hes1 interact with rbp-jkappa to negatively regulate notch-dependent activation of hrt and hes expression.

SIGNOR-146690

Q13043

P31749

0

phosphorylation

down-regulates

0.397

Akt interacts with mst1 and phosphorylates a highly conserved residue threonine 120 of mst1, which leads to inhibition of its kinase activity and nuclear translocation as well as the autophosphorylation of thr(183).

SIGNOR-252507

Q99814

Q9UGL1

1

transcriptional regulation

up-regulates quantity by expression

0.283

To this end, we confirm that KDM3A, KDM4B, KDM4C, KDM5B, KDM5C, and KDM62 are direct targets of HIF-1a while extent the list of known targets to KDM2A, KDM2B, KDM4D, KDM5A, and KDM6A. The results demonstrated that majority of the KDMs were similarly induced (KDM2A, KDM2B, KDM3A, KDM4B, KDM4C, KDM4D, KDM5A, KDM5B, KDM5C, KDM6B, and KDM7A) or repressed (KDM NO66 and KDM1A) by both HIF-1a and HIF-2a.

SIGNOR-271578

Q9GZM8

Q9NRI5

2

binding

up-regulates activity

0.58

Disrupted-In-Schizophrenia 1 (DISC1) is a candidate gene for susceptibility to schizophrenia. DISC1 is reported to interact with NudE-like (NUDEL), which forms a complex with lissencephaly-1 (LIS1) and 14-3-3ε. 14-3-3ε is involved in the proper localization of NUDEL and LIS1 in axons. the association with NUDEL and LIS1 supports the notion that DISC1 contributes to the neuronal development and morphology

SIGNOR-252162

O75914

2

phosphorylation

up-regulates activity

0.2

Both in vivo and in vitro analyses demonstrate that, although most phosphorylation events in the PAK N-terminal regulatory domain play no direct role in activation, a phosphorylation of alphaPAK serine 144 or betaPAK serine 139, which lie in the kinase inhibitory domain, significantly contribute to activation.

SIGNOR-250245

Q13535

P35790

1

phosphorylation

up-regulates activity

0.248

In particular, ATR phosphorylates Chk 1 and ATM signals to Chk 2.

SIGNOR-280184

O15111

P49815

1

phosphorylation

down-regulates

0.296

Insulin activation of mtor requires akt in a manner that involves ikkalpha, preferentially to ikkbeta, and tsc2 phosphorylation

SIGNOR-178664

Q5VT25

P10916

1

phosphorylation

up-regulates activity

0.65

These approximately 190-kDa myotonic dystrophy kinase-related Cdc42-binding kinases (MRCKs) preferentially phosphorylate nonmuscle myosin light chain at serine 19, which is known to be crucial for activating actin-myosin contractility.

SIGNOR-250723

O95390

Q13705

2

binding

up-regulates

0.625

Here we demonstrate using genetic and biochemical studies that actriib and its subfamily receptor, actriia, cooperatively mediate the gdf11 signal in patterning the axial vertebrae, and that gdf11 binds to both actriia and actriib, and induces phosphorylation of smad2

SIGNOR-95309

Q86V86

O95644

1

phosphorylation

up-regulates activity

0.246

In addition to PIM1, also PIM2 and PIM3 were able to phosphorylate WT, but not MM NFATC1 in vitro (Fig. (Fig.22c).

SIGNOR-276773

P15056

P17612

0

phosphorylation

down-regulates activity

0.635

Direct phosphorylation of B-Raf by PKA exerts a negative effect on its kinase activity, essentially via phosphorylation of Ser429

SIGNOR-250339

Q9Y5Z0

P05067

1

cleavage

up-regulates activity

0.544

BACE2, a beta -secretase homolog, cleaves at the beta site and within the amyloid-beta region of the amyloid-beta precursor protein.|Figure 6 Preferred BACE1 and BACE2 cleavage sites. (A) Sequence of APP indicating Î±- and Î²-cleavage sites, BACE1- and BACE2-cleavage sites, and the location of mutations analyzed here. APP numbering is that of the 770-aa isoform.

SIGNOR-261773

P60953

O14827

0

guanine nucleotide exchange factor

up-regulates activity

0.554

We therefore developed a screening-compatible live-cell imaging assay, using FRET-based biosensors for the prototype GTPases RHOA, RAC1 and CDC4215,19,20 (Extended Data Fig. 2 and Supplementary Note 1)|We found catalytic activities for 45/75 RhoGEFs and 48/63 RhoGAPs| Our data thus not only reveal extensive promiscuity among regulators, but also that the inactivating RhoGAPs are less selective than the activating RhoGEFs (p-value=0.02)(Supplementary Table 2).

SIGNOR-260575