GleghornLab/Signor_processed · Datasets at Hugging Face

IdA stringlengths 6 21	IdB stringlengths 6 21	labels float64 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
P12931	Q9C0H9	1	phosphorylation	up-regulates activity	0.496	Phosphorylation of multiple tyrosine-containing motifs found on Sin correlated with c-Crk and cellular phosphoprotein binding to Sin as well as increased c-Src activity. These data suggest that (1) SH2 and SH3 ligand sites on Sin cooperatively activate the signaling potential of c-Src, (2) Sin acts as both an activator and a substrate for c-Src, and (3) phosphorylated Sin may serve as a signaling effector molecule for Src by binding to multiple cellular proteins.	SIGNOR-263196
Q9NRD1	O14757	1	binding	down-regulates quantity by destabilization	0.496	Here, we report that DNA damage not only activates Chk1, but also exposes a degron-like region at the carboxyl terminus of Chk1 to an Fbx6-containing SCF (Skp1-Cul1-F box) E3 ligase, which mediates the ubiquitination and degradation of Chk1 and, in turn, terminates the checkpoint.	SIGNOR-271879
P35346	P63096	1	binding	up-regulates activity	0.496	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-256690
P51668	O60291	1	binding	up-regulates activity	0.496	Our in vivo and in vitro ubiquitylation studies demonstrate that the binding of TSG101 to Mahogunin targets the substrate TSG101 for ubiquitylation by Mahogunin E3 ligase in cooperation with its cognate E2 enzyme Ubc5a	SIGNOR-271637
P24941	Q07817	1	phosphorylation	up-regulates activity	0.496	Our findings show that Cdk2 phosphorylation of Bcl-xL at Ser73, but not the Bcl-xL cleavage products, is necessary and sufficient to induce cell death.	SIGNOR-278242
P67775	O14757	1	dephosphorylation	down-regulates activity	0.496	Phosphorylation of Chk1 by ATR is antagonized by a Chk1-regulated protein phosphatase 2A circuit\|In response to genotoxic stress, Chk1 is phosphorylated on serines 317 (S317) and 345 (S345) by the ataxia-telangiectasia-related (ATR) protein kinase. Phosphorylation of Chk1 on these C-terminal serine residues is used as an indicator of Chk1 activation in vivo.	SIGNOR-248615
Q9H2K2	Q92530	1	ADP-ribosylation	down-regulates quantity by destabilization	0.496	We identify the ADP-ribosyltransferase tankyrase (TNKS) and the 19S assembly chaperones dp27 and dS5b as direct binding partners of the proteasome regulator PI31. TNKS-mediated ADP-ribosylation of PI31 drastically reduces its affinity for 20S proteasome alpha subunits to relieve 20S repression by PI31.	SIGNOR-263386
O15379	Q01094	1	binding	up-regulates	0.496	Furthermore, smad7 caused hdac-1 bind to e2f-1 to form a ternary complex on chromosomal dna containing an e2f-binding motif and leading to repression in the activity of the e2f target genes.	SIGNOR-199961
Q6TDP4	Q13002	1	binding	down-regulates quantity by destabilization	0.496	Here, we report that actinfilin is able to bind to GluR6, a kainate-type glutamate receptor subunit, and target GluR6 for degradation. Like many members of its protein family, actinfilin acts as a substrate adaptor, binding Cullin 3 (Cul3) and linking GluR6 to the E3 ubiquitin-ligase complex. Together our data demonstrate that actinfilin acts as a scaffold, linking GluR6 to the Cul3 ubiquitin ligase to provide a novel mechanism for kainate receptor degradation.	SIGNOR-271612
P01106	P24385	1	transcriptional regulation	up-regulates quantity by expression	0.496	C-myc directly activates transcription of cyclin d1, cyclin d2 and cdk4, and leads to cdk 4/6 activation	SIGNOR-102731
P06493	Q02750	1	phosphorylation	down-regulates	0.496	P34cdc2 catalyzes the in vitro phosphorylation of mkk1 on both of these threonine residues and inactivates mkk1 enzymatic activity. Both sites are phosphorylated in vivo as well	SIGNOR-36116
Q9Y243	P16220	1	phosphorylation	up-regulates	0.496	When overexpressed in serum-stimulated cells, akt/pkb potently induced ser-133 phosphorylation of creb and promoted recruitment of cbp.	SIGNOR-62257
Q13489	Q13490	1	binding	up-regulates activity	0.496	Ligand-stimulated aggregation of receptor complexes causes recruitment of multiple traf2 trimers, which in turn leads to cIAP1 or cIAP2 dimerization.	SIGNOR-199088
P35968	Q05397	1	null	up-regulates activity	0.496	Here we show that genetic or pharmacological FAK inhibition in ECs prevents VEGF-stimulated permeability downstream of VEGF receptor or Src tyrosine kinase activation in vivo. VEGF promotes tension-independent FAK activation	SIGNOR-261945
Q9UPW6	Q9C0K0	1	transcriptional regulation	down-regulates quantity	0.495	Satb2 represses the transcription of Nr4a2. The misexpression of Nr4a2 together with Ctip2 induces expression of SubC-specific genes in wild-type Rsp, and simultaneous knockdown of these two genes in Rsp Satb2-mutant cells prevents their fate transition to SubC identity. Thus, Satb2 serves as a determinant gene in the Rsp regionalization by repressing Nr4a2 and Ctip2 during cortical development	SIGNOR-268931
P06493	P46060	1	phosphorylation	up-regulates	0.495	Here, we show that rangap1 is phosphorylated on residues t409, s428, and s442. Phosphorylation occurs before nuclear envelope breakdown and is maintained throughout mitosis . Alternatively, phosphorylated rangap1 may recruit specific sumo target proteins to ranbp2's catalytic domain.	SIGNOR-123520
Q7Z6Z7	P04637	1	ubiquitination	down-regulates quantity by destabilization	0.495	HUWE1 directly binds and ubiquitinates p53 to target it for proteasomal degradation, independently of MDM2 [ xref ].	SIGNOR-278547
Q969H0	P05412	1	binding	down-regulates quantity by destabilization	0.495	We report that in neurons the stability of c-Jun is regulated by the E3 ligase SCF(Fbw7), which ubiquitinates phosphorylated c-Jun and facilitates c-Jun degradation.	SIGNOR-272950
P36956	P49327	1	transcriptional regulation	up-regulates quantity by expression	0.495	Ultimately, both the AKT and MAPK transduction pathways regulate FASN expression through the modulation of expression of sterol regulatory element-binding protein (SREBP)-1c, which binds to regulatory elements in the FASN promoter. Proto-oncogene FBI-1 (Pokemon), a transcription factor of the bric--brac tramtrack broad complex/pox viruses and zinc fingers (BTB/POZ) domain family, interacts directly with SREBP-1c through its DNA-binding domain to synergistically activate the transcription of FASN	SIGNOR-242884
P21728	P50148	1	binding	up-regulates activity	0.495	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-257335
Q8WZ64	P60953	1	gtpase-activating protein	down-regulates activity	0.495	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-260455
Q13177	P19105	1	phosphorylation	up-regulates activity	0.495	In this study we report that gamma-PAK, which is activated by the GTP-binding proteins Cdc42 and Rac, catalyses phosphorylation of intact non-muscle myosin II and isolated recombinant RLC. Phosphopeptide maps and phosphoamino acid analysis revealed that gamma-PAK phosphorylates Ser-19 but does not phosphorylate Thr-18.Taken together, these data suggest that myosin II activation by the p21-activated family of kinases may be physiologically important in regulating cytoskeletal organization.	SIGNOR-263020
P98082	O75581	1	binding	down-regulates	0.495	Wnt stimulation induces the casein kinase 2 (ck2)-dependent phosphorylation of lrp6 at s1579, promoting its binding to dab2 and internalization with clathrin.	SIGNOR-196925
P17612	Q9BY41	1	phosphorylation	down-regulates	0.494	Negative regulation of histone deacetylase 8 activity by cyclic amp-dependent protein kinase athe pka phosphoacceptor site of hdac8 is ser(39)	SIGNOR-120643
P31749	P20749	1	phosphorylation	up-regulates quantity by stabilization	0.494	Here we show that Akt, Erk2, and IKK1/2 phosphorylate Bcl3. Phosphorylation of Ser33 by Akt induces switching of K48 ubiquitination to K63 ubiquitination and thus promotes nuclear localization and stabilization of Bcl3. Phosphorylation by Erk2 and IKK1/2 of Ser114 and Ser446 converts Bcl3 into a transcriptional coregulator by facilitating its recruitment to DNA.	SIGNOR-277358
P27361	P41235	1	phosphorylation	down-regulates activity	0.494	Activation of the ERK1/2 signalling pathway, inducing proliferation and survival, inhibits the expression of HNF4\u03b1.\|Here we have demonstrated that ERK1 is able to phosphorylate HNF4\u03b1 at several serine and threonine residues.	SIGNOR-279070
Q8TDN4	P24941	1	binding	down-regulates activity	0.494	Our study also showed that Cables1 increases the level of p21 and decreases the level of pRb, but does not affect the other cell cycle-related proteins we studied. Induction of apoptosis by Cables1, which occurs partially through inhibiting Cdk2 activity and upregulating p21, is prevented by Akt phosphorylation and 14-3-3 binding.	SIGNOR-276759
Q9HCP0	Q12778	1	phosphorylation	down-regulates activity	0.494	Phosphorylation of Ser319 forms a consensus sequence for phosphorylation by CK1, allowing it to phosphorylate Ser322, which in turn primes the CK1-catalysed phosphorylation of Ser325 \| Multisite phosphorylation of the region containing Ser319, Ser322, Ser325 and Ser329 provides a signal for the nuclear exclusion of FKHR	SIGNOR-250822
P34998	P63092	1	binding	up-regulates activity	0.494	Previous studies have indicated that CRHR could couple to multiple Galpha proteins including Gs, Gi, and Gq/11 and then go on to induce changes in AC activity and activation of PLC-beta3	SIGNOR-268617
P62714	Q9Y243	1	dephosphorylation	down-regulates activity	0.494	Overexpression of BTBD10 increased phosphorylation levels of Akts at both Thr(308) and Ser(473) while the reduction of the endogenous BTBD10 level resulted in a decrease in the phosphorylation levels of Akts. In vitro analysis indicated that BTBD10 bound to protein phosphatase 2A (PP2A) and inhibited dephosphorylation of Akts by PP2A.	SIGNOR-248611
P08908	P63096	1	binding	up-regulates activity	0.494	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-256693
Q15418	P03372	1	phosphorylation	up-regulates	0.494	Serine 167 is the major phosphorylation site on the human estrogen receptor. Phosphorylation is mediated by casein kinase ii.	SIGNOR-34113
P17612	P42261	1	phosphorylation	up-regulates activity	0.494	Phosphorylation of Ser-845 on GluR1 by PKA potentiates its response to glutamate.	SIGNOR-249987
Q9Y490	P16144	1	binding	up-regulates activity	0.494	Over the past 10 years, the binding of talin to the cytoplasmic tail of integrin-β subunits has been established to have a key role in integrin activation. Binding of the phosphotyrosinebinding (PTB)-domain-like subdomain of the protein 4.1, ezrin, radixin, moesin (FERM) domain of talin to the conserved WxxxNP(I/L)Y motif of the β-integrin tail permits additional weaker interactions between talin and the membrane-proximal region of the tail that trigger integrin activation, probably through the disruption of inhibitory interactions between α- and β-subunit cytoplasmic tails.	SIGNOR-257627
Q5VWQ8	P01111	1	gtpase-activating protein	down-regulates activity	0.494	The GAP domain of DAB2IP is homologous to other Ras-GAPs, such as GAP120 and neurofibromin (NF1), and can stimulate the GTPase activity of RAS proteins both in vitro and in cancer cell lines. DAB2IP is able to stimulate in vitro and in vivo the GTPase activity of RAS proteins (H-Ras, K-Ras, and N-Ras) facilitating GTP hydrolysis to GDP.	SIGNOR-254747
O75925	Q12888	1	sumoylation	up-regulates	0.494	Pias1 and pias4 are recruited to dna-damage sites and mediate 53bp1 recruitment and sumoylation.	SIGNOR-162156
Q9Y297	P30304	1	ubiquitination	up-regulates	0.494	Scfb-trcp has recently been shown to degrade phosphorylated cdc25a in the s and g2 phases.	SIGNOR-128436
P17612	P13612	1	phosphorylation	up-regulates activity	0.494	PKA phosphorylationin vitro blocks the binding of the alpha4 tail to paxillin. A mutation that mimics alpha4 phosphorylation disrupts paxillin binding and promotes cell spreading	SIGNOR-110119
P57059	Q6UUV9	1	phosphorylation	down-regulates	0.494	These results suggested that sik1 could phosphorylate all torcs and thereby repress their transactivation activities.	SIGNOR-147669
Q13882	Q99704	1	phosphorylation	down-regulates activity	0.494	BRK downregulates Dok1 via proteasomal degradation.\|BRK phosphorylates Dok1 at tyrosine 362.	SIGNOR-278301
Q96EB6	Q9Y618	1	null	up-regulates	0.494	In differentiated adipocyte cell lines, SIRT1 inhibits adipogenesis and enhances fat mobilization through lipolysis by suppressing the activity of PPARγ. SIRT1 achieves this by promoting the assembly of a corepressor complex, involving NCoR1 and SMRT, on the promoters of PPARγ target genes to repress their transcription.	SIGNOR-253506
P00748	P03951	1	cleavage	up-regulates activity	0.494	Activation of factor XI in plasma is dependent on factor XII \| Similar kinetics of factor XI cleavage are seen when 40 nmol/L factor XIIa (equal to 10% of factor XII activation) is added to factor XII-deficient plasma if an activating surface is provided.	SIGNOR-263519
Q13618	Q9H3F6	1	binding	up-regulates activity	0.494	BACURDs form ubiquitin ligase complexes, which selectively ubiquitinate RhoA, with Cul3. Our studies reveal a previously unknown mechanism for controlling RhoA degradation and regulating RhoA function in various biological contexts, which involves a Cul3/BACURD ubiquitin ligase complex.	SIGNOR-264234
Q06124	Q6P1J9	1	dephosphorylation	up-regulates activity	0.494	We found in this work that SHP2 dephosphorylates parafibromin and Cdc73, a component of the nuclear RNA polymerase II associated factor (PAF) complex, which can function as a tumor suppressor or oncoprotein in a context dependent manner.	SIGNOR-277036
P42345	P08069	1	phosphorylation	up-regulates activity	0.494	Both recombinant mTOR and immunoprecipitated mTORC2 phosphorylate IGF-IR and InsR on Tyr1131/1136 and Tyr1146/1151, respectively.\|Here we show that mTOR possesses unexpected tyrosine kinase activity and activates IGF-IR/InsR.	SIGNOR-280044
O15392	P98170	1	binding	up-regulates	0.494	Formation of a survivin-xiap complex promotes increased xiap stability against ubiquitination/proteasomal destruction and synergistic apoptosis	SIGNOR-126367
P50613	Q01094	1	phosphorylation	down-regulates	0.493	These results suggest that tfiih-mediated phosphorylation of e2f-1 plays a role in triggering e2f-1 degradation during s phase. here we show that the e2f-1 activation domain interacts with a kinase activity which phosphorylates two sites, ser403 and thr433, within the activation domain.	SIGNOR-69776
Q9UKB1	O15534	1	ubiquitination	down-regulates	0.493	We have found that per1 interacts with both _-trcp1 and _-trcp2 in a manner that depends on casein kinase 1 activity, and depletion of both _-trcp1 and _-trcp2 by rnai leads to dramatic stabilization of per1	SIGNOR-137758
P67775	P36507	1	dephosphorylation	down-regulates	0.493	In particular, p38 mapk activity stimulates the physical association between ppa2 and mkk1/2- erk1/2 complex, leading to mkk1/2 dephosphorilation by pp2a.	SIGNOR-166652
Q92918	Q9BXL7	1	phosphorylation	up-regulates activity	0.493	HPK1 interacts with CARMA1 in a TCR stimulation-dependent manner and phosphorylates the linker region of CARMA1. Interestingly, the putative HPK1 phosphorylation sites in CARMA1 are different from known PKC consensus sites. Mutations of residues S549, S551, and S552 in CARMA1 abrogated phosphorylation of a CARMA1-linker construct by HPK1 in vitro.	SIGNOR-276259
Q13131	P13569	1	phosphorylation	down-regulates activity	0.493	AMPK phosphorylates CFTR¬†in vitro¬†at two essential serines (Ser737and Ser768) in the R domain, formerly identified as "inhibitory" PKA sites.\|Interestingly two of these sites, namely Ser737 and Ser768, have been identified as “inhibitory” R domain sites, i.e. when mutated to alanines they augment the open probability of CFTR relative to wild type\|Our present results suggest that it might be AMPK rather than PKA that is phosphorylating Ser737 and Ser768 under baseline conditions	SIGNOR-259858
Q05655	P31946	1	phosphorylation	down-regulates	0.493	We provide a mechanism for these observations through the phosphorylation of 14-3-3 by ikk and pkc on serine residues ser132 and ser60, respectively, which interferes with its binding to ttp and hence the retention of ttp in the cytoplasm.	SIGNOR-138612
Q7KZI7	Q8TEW0	1	phosphorylation	up-regulates	0.493	Gab1 brings par1 and par3 into a transient complex, stimulating par3 phosphorylation by par1	SIGNOR-198742
Q969H0	P49768	1	binding	down-regulates quantity by destabilization	0.493	SEL-10 interacts with presenilin 1, facilitates its ubiquitination, and alters A-beta peptide production SEL-10 protein is a homologue of yeast Cdc4, a member of the SCF (Skp1-Cdc53/CUL1-F-box protein) E2-E3 ubiquitin ligase family. In this study, we show that human SEL-10 interacts with PS1 and enhances PS1 ubiquitination, thus altering cellular levels of unprocessed PS1 and its N- and C-terminal fragments. These observations suggest that SEL-10 mediated ubiquitination of PS1-CTF and PS1-NTF leads to their degradation.	SIGNOR-272600
Q8WXH5	Q93034	1	binding	up-regulates activity	0.493	SOCS7 promotes Dab1 polyubiquitylation and degradation. SOCS7-CRL5 complexes stimulate the ubiquitylation and turnover of Dab1. SOCS7, a CRL5 substrate adaptor protein, is also required for neocortical layering. SOCS7-CRL5 complexes stimulate the ubiquitylation and turnover of Dab1.	SIGNOR-272141
Q8IY67	P26599	1	binding	up-regulates activity	0.493	Raver1 was identified in two-hybrid screens by its interactions with the cytoskeletal proteins actinin and vinculin, and was also found to interact with PTB \|\| Here we show that raver1 is able to promote the smooth muscle-specific alternative splicing of TM by enhancing PTB-mediated repression of exon 3. This suggests a novel mechanism for PTB-mediated splicing repression involving recruitment of raver1 as a potent splicing co-repressor.	SIGNOR-272475
Q9H2X6	P17096	1	phosphorylation	down-regulates	0.493	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-158620
P35813	P50750	1	dephosphorylation	down-regulates activity	0.493	Taken together, our data indicate that PPM1A and to some extent PPM1B are important negative regulators of P-TEFb function	SIGNOR-248490
Q99500	P63096	1	binding	up-regulates	0.493	Edg-3 and edg-5 couple not only to gibut also to gqand g13	SIGNOR-70713
P98164	Q13635	1	binding	up-regulates quantity	0.493	LRP2 Promotes SHH Activity in Neurogenic Niches of the Developing and Adult Brain. In the RDVM, LRP2 forms a co-receptor complex with PTCH1 facilitating SHH binding and internalization of SHH/PTCH1 complexes, a prerequisite for pathway activation (Fig. 3B).	SIGNOR-265257
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
Q13535	P23025	1	phosphorylation	up-regulates activity	0.492	ATR mediated phosphorylation of XPA on S196 enhances cAMP-mediated optimization of NER, and is promoted by SIRT1-mediated deacetylation of XPA on K63, K67 and K215.	SIGNOR-258985
Q9H228	P63096	1	binding	up-regulates activity	0.492	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-256676
P12931	P19367	1	phosphorylation	down-regulates activity	0.492	Mechanistically, c-Src phosphorylation of HK1 at Tyr732 robustly decreases its K m and increases its V max by disrupting its dimer formation.\|Mechanistically, c-Src-mediated Y732 phosphorylation disrupts HK1 dimer formation, alters its enzyme kinetics and eventually enhances enzymatic activity ( ).	SIGNOR-278209
P06493	Q9Y3Z3	1	phosphorylation	down-regulates	0.492	Cyclin a2/cdk1 phosphorylates samhd1 at the threonine 592 residue both in vitro and in vivo. Phosphorylation of samhd1 thr592 correlates with loss of its ability to restrict hiv-1.	SIGNOR-201913
P17612	P26678	1	phosphorylation	up-regulates activity	0.492	Phospholamban (PLB) can be phosphorylated at Ser(16) by cyclic AMP-dependent protein kinase. phosphorylation of Ser(16) is sufficient for mediating the maximal cardiac responses to beta-adrenergic stimulation.	SIGNOR-250030
P14780	P01023	2	cleavage	down-regulates quantity by destabilization	0.492	The complex formation was confirmed by the use of 125I-labeled matrix metalloproteinase-2. The cleavage sites in the "bait" regions following formation of high-molecular-weight complexes of matrix metalloproteinases with the alpha-macroglobulins were determined by protein sequence analysis. Pregnancy zone protein was cleaved at Thr693-Tyr694 and alpha2-macroglobulin at Gly679-Leu680 and Arg696-Leu697 by matrix metalloproteinase-2. Matrix metalloproteinase-9 cleaved alpha2-macroglobulin at the same site as matrix metalloproteinase-2, but cleavage of pregnancy zone protein was at Leu753-Ser754.\|MMP-2 and MMP-9 cause a significant degradation of these bands and the background, a degradation which is prevented by both a2M and PZP.	SIGNOR-261740
P01023	P14780	2	binding	down-regulates activity	0.492	Both PZP and a2M collagenase complexes incubated with gelatin demonstrated a significant inhibition of the catalytic activity\| MMP-2 and MMP-9 cause a significant degradation of these bands and the background, a degradation which is prevented by both a2M and PZP.	SIGNOR-261801
Q8IWV7	O94761	1	binding	up-regulates	0.492	The isolated recql4, assayed as a complex with ubr1 and ubr2, exhibited dna-stimulated atpase activity but was inactive as either dna helicase or dna translocase / the discovery, in the present work, that these ub ligases, ubr1 and ubr2, interact with the putative helicase recql4 (fig. 2), and that recql4 is a long-lived, non-ubiquitylated protein in hela cells	SIGNOR-128169
Q9UKV5	P04035	1	ubiquitination	down-regulates quantity by destabilization	0.492	Gp78 mediates the sterol regulated ubiquitination of HMGCR.	SIGNOR-278622
O60291	Q99816	1	monoubiquitination	up-regulates activity	0.492	In the present study, we identified the first substrate of the Mahogunin E3 ubiquitin–protein ligase: TSG101, a key component of the endosomal sorting ESCRT machinery.We find that Mahogunin interacts with the ubiquitin E2 variant (UEV) domain of TSG101 via its PSAP motif and that it catalyzes monoubiquitylation of TSG101 both in vivo and in vitro. Consistent with the results of the biochemical characterization and subcellular localization studies of Mahogunin, our functional studies provide direct evidence that Mahogunin plays an essential role in regulation of endosome-to-lysosome trafficking. We found that siRNA-mediated depletion of Mahogunin in HeLa cells causes enlargement and clustering of EEA1-positive endosomes and LAMP2-positive late endosomes/lysosomes (Figure 8B) and inhibits the endosomal trafficking of internalized EGF–EGFR complexes to lysosomes for degradation (Figures 9 and and10,10, A and B). These results are strikingly similar to the phenotypes that resulted from depletion of TSG101	SIGNOR-271635
P53350	O96017	1	phosphorylation	up-regulates	0.492	Plk1 overexpression enhances phosphorylation of chk2 at thr-68.	SIGNOR-96637
Q13131	O00418	1	phosphorylation	down-regulates activity	0.492	AMPK can phosphorylate three sites in eEF2 kinase in vitro. Of these, Ser-398 appears to be more efficiently phosphorylated than either Ser-78 or Ser-366. Ser-78 and Ser-366 do not appear to be phosphorylated by AMPK within cells. Ser-366 serves to decrease the activity of eEF2 kinase	SIGNOR-250314
P28799	P19438	1	binding	down-regulates	0.492	Collectively, these findings demonstrate that pgrn is a ligand of tnfr, an antagonist of tnf signaling, and plays a critical role in the pathogenesis of inflammatory arthritis in mice.	SIGNOR-172684
Q9HB89	P50148	1	binding	up-regulates activity	0.492	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-256751
Q15418	Q8TB45	1	phosphorylation	down-regulates	0.492	We found that deptor was rapidly phosphorylated on three serines in a conserved degron, facilitating binding and ubiquitylation by the f box protein _trcp, with consequent proteasomal degradation of deptor. Phosphorylation of the _trcp degron in deptor is executed by ck1	SIGNOR-176883
Q9Y4H4	P63096	1	binding	down-regulates activity	0.492	GPSM3 acts through its two GoLoco motifs to exert GDP dissociation inhibitor activity over Galpha(i) subunits\|interactions between GPSM3 and Galphai1 or Gbeta1 (20) was assayed by BRET.	SIGNOR-264864
Q16584	P46734	1	phosphorylation	up-regulates activity	0.492	Immunoprecipitated mlk-3 catalyzed the phosphorylation of sek1 in vitro, and co-transfected mlk-3 induced phosphorylation of sek1 and mkk3 at sites required for activation, suggesting direct regulation of these protein kinases.	SIGNOR-45788
O15552	P50148	1	binding	up-regulates activity	0.492	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-257188
P27361	Q9H9S0	1	phosphorylation	down-regulates	0.492	We found that activation of ERK1 signaling inhibited transactivation activity of Nanog.\|We showed the direct phosphorylation of Nanog by ERK1 and clearly showed that Ser52 is the major phosphorylation site and Ser65 is weakly phosphorylated by ERK1.	SIGNOR-278487
Q12772	P04035	1	transcriptional regulation	up-regulates quantity by expression	0.492	The processed SREBP2, designated nuclear SREBP2 (nSREBP2), then enters the nucleus as a homodimer, binds to the sterol regulatory element (SRE) sequence in the promoters of target genes, including HMGCR and SQLE (encoding squalene monooxygenase), and upregulates their transcription	SIGNOR-265161
P23759	P13349	1	transcriptional regulation	up-regulates quantity by expression	0.492	Together, these experiments indicate that Pax7 enforces satellite cell commitment by recruiting a HMT complex to Myf5, resulting in transcriptional activation.	SIGNOR-255641
P38405	Q9NVN3	1	binding	up-regulates activity	0.492	In the olfactory sensory neurons located in the nasal epithelium, OR activation by odorants or other stimuli can switch on a specific olfactory G-protein (GNAL), which in turn stimulatesand ADCY3 and Ric8b leads to cyclic adenosine monophosphate (cAMP) generation from adenosine triphosphate (ATP)	SIGNOR-278071
P21741	Q04721	1	binding	up-regulates	0.491	We showed that mk binds to the notch2 receptor in hacat keratinocytes. We further found that mk activates notch2	SIGNOR-161427
Q9H4A3	P55011	1	phosphorylation	up-regulates activity	0.491	Combining these biochemical studies with the live cell imaging data, these results collectively suggest that the entire CTD is necessary for WNK1 to drive optimal SPAK/OSR1 activation and downstream NKCC1/KCC phosphorylation via PS.	SIGNOR-277859
Q9UKY1	Q15326	1	binding	down-regulates activity	0.491	Corepressor BS69 interacts with ZHX1, a member of the ZHX family having zinc-fingers and homeoboxes. Although BS69 was originally found as a corepressor interacting with ZHX1, BS69 was also found to function as a transcriptional activator in HEK293 cells, in which the activation required the MYND domain of BS69. Co-transfection of BS69 with a mutant form of ZHX1, which cannot interact with BS69, led to increase the transcriptional activation of BS69, suggesting that transcriptional activation mediated by BS69 is suppressed by ZHX1.	SIGNOR-263898
Q00403	Q12947	1	binding	up-regulates activity	0.491	The human forkhead protein FREAC-2 contains two functionally redundant activation domains and interacts with TBP and TFIIB. FREAC-2 dependent activation of transcription by TFIIB.	SIGNOR-220317
P53611	P20339	1	lipidation	up-regulates activity	0.491	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-265573
P34981	P50148	1	binding	up-regulates activity	0.491	TRH receptors are textbook calcium-mobilizing receptors: they are coupled to Gq and G11, which activate phospholipase Cβ (PLCβ).	SIGNOR-267202
P53350	O43524	1	phosphorylation	down-regulates activity	0.491	Furthermore, PLK1 can directly phosphorylate FOXO3 in an in vitro kinase assay.\|PLK1 induces translocation of FOXO3 from the nucleus to the cytoplasm and suppresses FOXO3 activity, measured by the decrease in the pro-apoptotic Bim protein levels and in the cell cycle inhibitor protein p27.	SIGNOR-279095
Q9HBW0	Q03113	1	binding	up-regulates	0.491	Lysophosphatidic acid (lpa), a major g protein coupled receptor (gpcr)-activating ligand present in serum, elicits growth factor like responses by stimulating specific gpcrs coupled to heterotrimeric g proteins such as g(i), g(q), and g12/13. lpa2 also can couple to the gi/o, g12/13, and gqfamilies.	SIGNOR-135834
P35408	P63092	1	binding	up-regulates activity	0.491	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-256760
Q9NYJ7	P46531	1	binding	up-regulates activity	0.491	Notch signaling is a highly conserved pathway involved in cell fate choice during development with Delta and Jagged constituting the two evolutionary conserved families of Notch ligands. These ligands are transmembrane proteins with conserved biochemical structure that share their receptors and signal through a common mechanism. Upon ligand binding Notch receptors are proteoliticaly cleaved, the intracellular domain of Notch (NICD) is released and translocated to the nucleus, where it activates target genes. In mammals, four receptors and five ligands have been described. Delta-1, Delta-3 and Delta-4 are homologues to Drosophila Delta and Jagged-1 and Jagged-2 to Drosophila Serrate.	SIGNOR-209738
Q13976	Q9Y210	1	phosphorylation	down-regulates activity	0.491	PKG phosphorylated TRPC6, and both T70 and S322 were targeted. Both sites were functionally relevant, as 8Br-cGMP strongly suppressed current in wild-type TRPC6 channels, but not in those with phospho-silencing mutations (T70A, S322A or S322Q).	SIGNOR-276271
P62834	Q9P212	1	binding	up-regulates quantity	0.491	The SUR1 subunit of KATP channels recruits Epac2 to the plasma membrane where a signaling complex comprised of Epac2, Rap1 and PLC-ε is formed. Rap1 is activated by Epac2, and the activated form of Rap1 binds to and activates PLC-ε.	SIGNOR-278142
Q8IV63	O75531	1	phosphorylation	down-regulates activity	0.491	Although VRK3 has been regarded as a genuine pseudokinase from structural and biochemical studies, recent reports suggest that VRK3 acts as an active kinase as well as a signaling scaffold in cells. Here, we demonstrate that VRK3 phosphorylates the nuclear envelope protein barrier-to-autointegration factor (BAF) on Ser4.\|Ectopic expression of VRK3 induces the translocation of BAF from the nucleus to the cytoplasm. I	SIGNOR-264564
Q96G30	Q01726	1	binding	down-regulates activity	0.491	We report that MRAP and MRAP2 can interact with all 5 MCRs. This interaction results in MC2R surface expression and signaling. In contrast, MRAP and MRAP2 can reduce MC1R, MC3R, MC4R, and MC5R responsiveness to [Nle4,D-Phe7]alpha-melanocyte-stimulating hormone (NDP-MSH). MRAP and MRAP2 can reduce the surface expression of MC4R and also the signaling of this receptor. we observed a significant decrease in the cell-surface expression of MC4R and MC5R in the presence of MRAP and MRAP2. It is interesting that MRAP and MRAP2 have opposite effects in the modulation of different MCR family members.	SIGNOR-252365
P31749	Q9Y2I7	1	phosphorylation	up-regulates	0.491	Here we report that serine318 on the fyve domain-containing ptdins3p 5-kinase (pikfyve) is a novel substrate for pkb, and show that phosphorylation stimulates the ptdins3p 5-kinase activity of the enzyme.	SIGNOR-252474
Q99836	Q08211	1	binding	up-regulates activity	0.491	We further showed that both DHX9 and DHX36 are localized within the cytosol and are directly bound to the Toll-interleukin receptor domain of MyD88 via their helicase-associated domain 2 and DUF domains. This study demonstrates that DHX9/DHX36 represent the MyD88-dependent DNA sensors in the cytosol of pDCs and suggests a much broader role for DHX helicases in viral sensing.	SIGNOR-260955
Q03112	P84022	1	binding	down-regulates	0.491	Evi-1 interacts with smad3, an intracellular mediator of tgf-beta signalling, thereby suppressing the transcriptional activity of smad3.	SIGNOR-59132

P12931

Q9C0H9

1

phosphorylation

up-regulates activity

0.496

Phosphorylation of multiple tyrosine-containing motifs found on Sin correlated with c-Crk and cellular phosphoprotein binding to Sin as well as increased c-Src activity. These data suggest that (1) SH2 and SH3 ligand sites on Sin cooperatively activate the signaling potential of c-Src, (2) Sin acts as both an activator and a substrate for c-Src, and (3) phosphorylated Sin may serve as a signaling effector molecule for Src by binding to multiple cellular proteins.

SIGNOR-263196

Q9NRD1

O14757

1

binding

down-regulates quantity by destabilization

0.496

Here, we report that DNA damage not only activates Chk1, but also exposes a degron-like region at the carboxyl terminus of Chk1 to an Fbx6-containing SCF (Skp1-Cul1-F box) E3 ligase, which mediates the ubiquitination and degradation of Chk1 and, in turn, terminates the checkpoint.

SIGNOR-271879

P35346

P63096

1

binding

up-regulates activity

0.496

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-256690

P51668

O60291

1

binding

up-regulates activity

0.496

Our in vivo and in vitro ubiquitylation studies demonstrate that the binding of TSG101 to Mahogunin targets the substrate TSG101 for ubiquitylation by Mahogunin E3 ligase in cooperation with its cognate E2 enzyme Ubc5a

SIGNOR-271637

P24941

Q07817

1

phosphorylation

up-regulates activity

0.496

Our findings show that Cdk2 phosphorylation of Bcl-xL at Ser73, but not the Bcl-xL cleavage products, is necessary and sufficient to induce cell death.

SIGNOR-278242

P67775

O14757

1

dephosphorylation

down-regulates activity

0.496

Phosphorylation of Chk1 by ATR is antagonized by a Chk1-regulated protein phosphatase 2A circuit|In response to genotoxic stress, Chk1 is phosphorylated on serines 317 (S317) and 345 (S345) by the ataxia-telangiectasia-related (ATR) protein kinase. Phosphorylation of Chk1 on these C-terminal serine residues is used as an indicator of Chk1 activation in vivo.

SIGNOR-248615

Q9H2K2

Q92530

1

ADP-ribosylation

down-regulates quantity by destabilization

0.496

We identify the ADP-ribosyltransferase tankyrase (TNKS) and the 19S assembly chaperones dp27 and dS5b as direct binding partners of the proteasome regulator PI31. TNKS-mediated ADP-ribosylation of PI31 drastically reduces its affinity for 20S proteasome alpha subunits to relieve 20S repression by PI31.

SIGNOR-263386

O15379

Q01094

1

binding

up-regulates

0.496

Furthermore, smad7 caused hdac-1 bind to e2f-1 to form a ternary complex on chromosomal dna containing an e2f-binding motif and leading to repression in the activity of the e2f target genes.

SIGNOR-199961

Q6TDP4

Q13002

1

binding

down-regulates quantity by destabilization

0.496

Here, we report that actinfilin is able to bind to GluR6, a kainate-type glutamate receptor subunit, and target GluR6 for degradation. Like many members of its protein family, actinfilin acts as a substrate adaptor, binding Cullin 3 (Cul3) and linking GluR6 to the E3 ubiquitin-ligase complex. Together our data demonstrate that actinfilin acts as a scaffold, linking GluR6 to the Cul3 ubiquitin ligase to provide a novel mechanism for kainate receptor degradation.

SIGNOR-271612

P01106

P24385

1

transcriptional regulation

up-regulates quantity by expression

0.496

C-myc directly activates transcription of cyclin d1, cyclin d2 and cdk4, and leads to cdk 4/6 activation

SIGNOR-102731

P06493

Q02750

1

phosphorylation

down-regulates

0.496

P34cdc2 catalyzes the in vitro phosphorylation of mkk1 on both of these threonine residues and inactivates mkk1 enzymatic activity. Both sites are phosphorylated in vivo as well

SIGNOR-36116

Q9Y243

P16220

1

phosphorylation

up-regulates

0.496

When overexpressed in serum-stimulated cells, akt/pkb potently induced ser-133 phosphorylation of creb and promoted recruitment of cbp.

SIGNOR-62257

Q13489

Q13490

1

binding

up-regulates activity

0.496

Ligand-stimulated aggregation of receptor complexes causes recruitment of multiple traf2 trimers, which in turn leads to cIAP1 or cIAP2 dimerization.

SIGNOR-199088

P35968

Q05397

1

null

up-regulates activity

0.496

Here we show that genetic or pharmacological FAK inhibition in ECs prevents VEGF-stimulated permeability downstream of VEGF receptor or Src tyrosine kinase activation in vivo. VEGF promotes tension-independent FAK activation

SIGNOR-261945

Q9UPW6

Q9C0K0

1

transcriptional regulation

down-regulates quantity

0.495

Satb2 represses the transcription of Nr4a2. The misexpression of Nr4a2 together with Ctip2 induces expression of SubC-specific genes in wild-type Rsp, and simultaneous knockdown of these two genes in Rsp Satb2-mutant cells prevents their fate transition to SubC identity. Thus, Satb2 serves as a determinant gene in the Rsp regionalization by repressing Nr4a2 and Ctip2 during cortical development

SIGNOR-268931

P06493

P46060

1

phosphorylation

up-regulates

0.495

Here, we show that rangap1 is phosphorylated on residues t409, s428, and s442. Phosphorylation occurs before nuclear envelope breakdown and is maintained throughout mitosis . Alternatively, phosphorylated rangap1 may recruit specific sumo target proteins to ranbp2's catalytic domain.

SIGNOR-123520

Q7Z6Z7

P04637

1

ubiquitination

down-regulates quantity by destabilization

0.495

HUWE1 directly binds and ubiquitinates p53 to target it for proteasomal degradation, independently of MDM2 [ xref ].

SIGNOR-278547

Q969H0

P05412

1

binding

down-regulates quantity by destabilization

0.495

We report that in neurons the stability of c-Jun is regulated by the E3 ligase SCF(Fbw7), which ubiquitinates phosphorylated c-Jun and facilitates c-Jun degradation.

SIGNOR-272950

P36956

P49327

1

transcriptional regulation

up-regulates quantity by expression

0.495

Ultimately, both the AKT and MAPK transduction pathways regulate FASN expression through the modulation of expression of sterol regulatory element-binding protein (SREBP)-1c, which binds to regulatory elements in the FASN promoter. Proto-oncogene FBI-1 (Pokemon), a transcription factor of the bric--brac tramtrack broad complex/pox viruses and zinc fingers (BTB/POZ) domain family, interacts directly with SREBP-1c through its DNA-binding domain to synergistically activate the transcription of FASN

SIGNOR-242884

P21728

P50148

1

binding

up-regulates activity

0.495

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-257335

Q8WZ64

P60953

1

gtpase-activating protein

down-regulates activity

0.495

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-260455

Q13177

P19105

1

phosphorylation

up-regulates activity

0.495

In this study we report that gamma-PAK, which is activated by the GTP-binding proteins Cdc42 and Rac, catalyses phosphorylation of intact non-muscle myosin II and isolated recombinant RLC. Phosphopeptide maps and phosphoamino acid analysis revealed that gamma-PAK phosphorylates Ser-19 but does not phosphorylate Thr-18.Taken together, these data suggest that myosin II activation by the p21-activated family of kinases may be physiologically important in regulating cytoskeletal organization.

SIGNOR-263020

P98082

O75581

1

binding

down-regulates

0.495

Wnt stimulation induces the casein kinase 2 (ck2)-dependent phosphorylation of lrp6 at s1579, promoting its binding to dab2 and internalization with clathrin.

SIGNOR-196925

P17612

Q9BY41

1

phosphorylation

down-regulates

0.494

Negative regulation of histone deacetylase 8 activity by cyclic amp-dependent protein kinase athe pka phosphoacceptor site of hdac8 is ser(39)

SIGNOR-120643

P31749

P20749

1

phosphorylation

up-regulates quantity by stabilization

0.494

Here we show that Akt, Erk2, and IKK1/2 phosphorylate Bcl3. Phosphorylation of Ser33 by Akt induces switching of K48 ubiquitination to K63 ubiquitination and thus promotes nuclear localization and stabilization of Bcl3. Phosphorylation by Erk2 and IKK1/2 of Ser114 and Ser446 converts Bcl3 into a transcriptional coregulator by facilitating its recruitment to DNA.

SIGNOR-277358

P27361

P41235

1

phosphorylation

down-regulates activity

0.494

Activation of the ERK1/2 signalling pathway, inducing proliferation and survival, inhibits the expression of HNF4\u03b1.|Here we have demonstrated that ERK1 is able to phosphorylate HNF4\u03b1 at several serine and threonine residues.

SIGNOR-279070

Q8TDN4

P24941

1

binding

down-regulates activity

0.494

Our study also showed that Cables1 increases the level of p21 and decreases the level of pRb, but does not affect the other cell cycle-related proteins we studied. Induction of apoptosis by Cables1, which occurs partially through inhibiting Cdk2 activity and upregulating p21, is prevented by Akt phosphorylation and 14-3-3 binding.

SIGNOR-276759

Q9HCP0

Q12778

1

phosphorylation

down-regulates activity

0.494

Phosphorylation of Ser319 forms a consensus sequence for phosphorylation by CK1, allowing it to phosphorylate Ser322, which in turn primes the CK1-catalysed phosphorylation of Ser325 | Multisite phosphorylation of the region containing Ser319, Ser322, Ser325 and Ser329 provides a signal for the nuclear exclusion of FKHR

SIGNOR-250822

P34998

P63092

1

binding

up-regulates activity

0.494

Previous studies have indicated that CRHR could couple to multiple Galpha proteins including Gs, Gi, and Gq/11 and then go on to induce changes in AC activity and activation of PLC-beta3

SIGNOR-268617

P62714

Q9Y243

1

dephosphorylation

down-regulates activity

0.494

Overexpression of BTBD10 increased phosphorylation levels of Akts at both Thr(308) and Ser(473) while the reduction of the endogenous BTBD10 level resulted in a decrease in the phosphorylation levels of Akts. In vitro analysis indicated that BTBD10 bound to protein phosphatase 2A (PP2A) and inhibited dephosphorylation of Akts by PP2A.

SIGNOR-248611

P08908

P63096

1

binding

up-regulates activity

0.494

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-256693

Q15418

P03372

1

phosphorylation

up-regulates

0.494

Serine 167 is the major phosphorylation site on the human estrogen receptor. Phosphorylation is mediated by casein kinase ii.

SIGNOR-34113

P17612

P42261

1

phosphorylation

up-regulates activity

0.494

Phosphorylation of Ser-845 on GluR1 by PKA potentiates its response to glutamate.

SIGNOR-249987

Q9Y490

P16144

1

binding

up-regulates activity

0.494

Over the past 10 years, the binding of talin to the cytoplasmic tail of integrin-β subunits has been established to have a key role in integrin activation. Binding of the phosphotyrosinebinding (PTB)-domain-like subdomain of the protein 4.1, ezrin, radixin, moesin (FERM) domain of talin to the conserved WxxxNP(I/L)Y motif of the β-integrin tail permits additional weaker interactions between talin and the membrane-proximal region of the tail that trigger integrin activation, probably through the disruption of inhibitory interactions between α- and β-subunit cytoplasmic tails.

SIGNOR-257627

Q5VWQ8

P01111

1

gtpase-activating protein

down-regulates activity

0.494

The GAP domain of DAB2IP is homologous to other Ras-GAPs, such as GAP120 and neurofibromin (NF1), and can stimulate the GTPase activity of RAS proteins both in vitro and in cancer cell lines. DAB2IP is able to stimulate in vitro and in vivo the GTPase activity of RAS proteins (H-Ras, K-Ras, and N-Ras) facilitating GTP hydrolysis to GDP.

SIGNOR-254747

O75925

Q12888

1

sumoylation

up-regulates

0.494

Pias1 and pias4 are recruited to dna-damage sites and mediate 53bp1 recruitment and sumoylation.

SIGNOR-162156

Q9Y297

P30304

1

ubiquitination

up-regulates

0.494

Scfb-trcp has recently been shown to degrade phosphorylated cdc25a in the s and g2 phases.

SIGNOR-128436

P17612

P13612

1

phosphorylation

up-regulates activity

0.494

PKA phosphorylationin vitro blocks the binding of the alpha4 tail to paxillin. A mutation that mimics alpha4 phosphorylation disrupts paxillin binding and promotes cell spreading

SIGNOR-110119

P57059

Q6UUV9

1

phosphorylation

down-regulates

0.494

These results suggested that sik1 could phosphorylate all torcs and thereby repress their transactivation activities.

SIGNOR-147669

Q13882

Q99704

1

phosphorylation

down-regulates activity

0.494

BRK downregulates Dok1 via proteasomal degradation.|BRK phosphorylates Dok1 at tyrosine 362.

SIGNOR-278301

Q96EB6

Q9Y618

1

null

up-regulates

0.494

In differentiated adipocyte cell lines, SIRT1 inhibits adipogenesis and enhances fat mobilization through lipolysis by suppressing the activity of PPARγ. SIRT1 achieves this by promoting the assembly of a corepressor complex, involving NCoR1 and SMRT, on the promoters of PPARγ target genes to repress their transcription.

SIGNOR-253506

P00748

P03951

1

cleavage

up-regulates activity

0.494

Activation of factor XI in plasma is dependent on factor XII | Similar kinetics of factor XI cleavage are seen when 40 nmol/L factor XIIa (equal to 10% of factor XII activation) is added to factor XII-deficient plasma if an activating surface is provided.

SIGNOR-263519

Q13618

Q9H3F6

1

binding

up-regulates activity

0.494

BACURDs form ubiquitin ligase complexes, which selectively ubiquitinate RhoA, with Cul3. Our studies reveal a previously unknown mechanism for controlling RhoA degradation and regulating RhoA function in various biological contexts, which involves a Cul3/BACURD ubiquitin ligase complex.

SIGNOR-264234

Q06124

Q6P1J9

1

dephosphorylation

up-regulates activity

0.494

We found in this work that SHP2 dephosphorylates parafibromin and Cdc73, a component of the nuclear RNA polymerase II associated factor (PAF) complex, which can function as a tumor suppressor or oncoprotein in a context dependent manner.

SIGNOR-277036

P42345

P08069

1

phosphorylation

up-regulates activity

0.494

Both recombinant mTOR and immunoprecipitated mTORC2 phosphorylate IGF-IR and InsR on Tyr1131/1136 and Tyr1146/1151, respectively.|Here we show that mTOR possesses unexpected tyrosine kinase activity and activates IGF-IR/InsR.

SIGNOR-280044

O15392

P98170

1

binding

up-regulates

0.494

Formation of a survivin-xiap complex promotes increased xiap stability against ubiquitination/proteasomal destruction and synergistic apoptosis

SIGNOR-126367

P50613

Q01094

1

phosphorylation

down-regulates

0.493

These results suggest that tfiih-mediated phosphorylation of e2f-1 plays a role in triggering e2f-1 degradation during s phase. here we show that the e2f-1 activation domain interacts with a kinase activity which phosphorylates two sites, ser403 and thr433, within the activation domain.

SIGNOR-69776

Q9UKB1

O15534

1

ubiquitination

down-regulates

0.493

We have found that per1 interacts with both _-trcp1 and _-trcp2 in a manner that depends on casein kinase 1 activity, and depletion of both _-trcp1 and _-trcp2 by rnai leads to dramatic stabilization of per1

SIGNOR-137758

P67775

P36507

1

dephosphorylation

down-regulates

0.493

In particular, p38 mapk activity stimulates the physical association between ppa2 and mkk1/2- erk1/2 complex, leading to mkk1/2 dephosphorilation by pp2a.

SIGNOR-166652

Q92918

Q9BXL7

1

phosphorylation

up-regulates activity

0.493

HPK1 interacts with CARMA1 in a TCR stimulation-dependent manner and phosphorylates the linker region of CARMA1. Interestingly, the putative HPK1 phosphorylation sites in CARMA1 are different from known PKC consensus sites. Mutations of residues S549, S551, and S552 in CARMA1 abrogated phosphorylation of a CARMA1-linker construct by HPK1 in vitro.

SIGNOR-276259

Q13131

P13569

1

phosphorylation

down-regulates activity

0.493

AMPK phosphorylates CFTR¬†in vitro¬†at two essential serines (Ser737and Ser768) in the R domain, formerly identified as "inhibitory" PKA sites.|Interestingly two of these sites, namely Ser737 and Ser768, have been identified as “inhibitory” R domain sites, i.e. when mutated to alanines they augment the open probability of CFTR relative to wild type|Our present results suggest that it might be AMPK rather than PKA that is phosphorylating Ser737 and Ser768 under baseline conditions

SIGNOR-259858

Q05655

P31946

1

phosphorylation

down-regulates

0.493

We provide a mechanism for these observations through the phosphorylation of 14-3-3 by ikk and pkc on serine residues ser132 and ser60, respectively, which interferes with its binding to ttp and hence the retention of ttp in the cytoplasm.

SIGNOR-138612

Q7KZI7

Q8TEW0

1

phosphorylation

up-regulates

0.493

Gab1 brings par1 and par3 into a transient complex, stimulating par3 phosphorylation by par1

SIGNOR-198742

Q969H0

P49768

1

binding

down-regulates quantity by destabilization

0.493

SEL-10 interacts with presenilin 1, facilitates its ubiquitination, and alters A-beta peptide production SEL-10 protein is a homologue of yeast Cdc4, a member of the SCF (Skp1-Cdc53/CUL1-F-box protein) E2-E3 ubiquitin ligase family. In this study, we show that human SEL-10 interacts with PS1 and enhances PS1 ubiquitination, thus altering cellular levels of unprocessed PS1 and its N- and C-terminal fragments. These observations suggest that SEL-10 mediated ubiquitination of PS1-CTF and PS1-NTF leads to their degradation.

SIGNOR-272600

Q8WXH5

Q93034

1

binding

up-regulates activity

0.493

SOCS7 promotes Dab1 polyubiquitylation and degradation. SOCS7-CRL5 complexes stimulate the ubiquitylation and turnover of Dab1. SOCS7, a CRL5 substrate adaptor protein, is also required for neocortical layering. SOCS7-CRL5 complexes stimulate the ubiquitylation and turnover of Dab1.

SIGNOR-272141

Q8IY67

P26599

1

binding

up-regulates activity

0.493

Raver1 was identified in two-hybrid screens by its interactions with the cytoskeletal proteins actinin and vinculin, and was also found to interact with PTB || Here we show that raver1 is able to promote the smooth muscle-specific alternative splicing of TM by enhancing PTB-mediated repression of exon 3. This suggests a novel mechanism for PTB-mediated splicing repression involving recruitment of raver1 as a potent splicing co-repressor.

SIGNOR-272475

Q9H2X6

P17096

1

phosphorylation

down-regulates

0.493

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-158620

P35813

P50750

1

dephosphorylation

down-regulates activity

0.493

Taken together, our data indicate that PPM1A and to some extent PPM1B are important negative regulators of P-TEFb function

SIGNOR-248490

Q99500

P63096

1

binding

up-regulates

0.493

Edg-3 and edg-5 couple not only to gibut also to gqand g13

SIGNOR-70713

P98164

Q13635

1

binding

up-regulates quantity

0.493

LRP2 Promotes SHH Activity in Neurogenic Niches of the Developing and Adult Brain. In the RDVM, LRP2 forms a co-receptor complex with PTCH1 facilitating SHH binding and internalization of SHH/PTCH1 complexes, a prerequisite for pathway activation (Fig. 3B).

SIGNOR-265257

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

Q13535

P23025

1

phosphorylation

up-regulates activity

0.492

ATR mediated phosphorylation of XPA on S196 enhances cAMP-mediated optimization of NER, and is promoted by SIRT1-mediated deacetylation of XPA on K63, K67 and K215.

SIGNOR-258985

Q9H228

P63096

1

binding

up-regulates activity

0.492

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-256676

P12931

P19367

1

phosphorylation

down-regulates activity

0.492

Mechanistically, c-Src phosphorylation of HK1 at Tyr732 robustly decreases its K m and increases its V max by disrupting its dimer formation.|Mechanistically, c-Src-mediated Y732 phosphorylation disrupts HK1 dimer formation, alters its enzyme kinetics and eventually enhances enzymatic activity ( ).

SIGNOR-278209

P06493

Q9Y3Z3

1

phosphorylation

down-regulates

0.492

Cyclin a2/cdk1 phosphorylates samhd1 at the threonine 592 residue both in vitro and in vivo. Phosphorylation of samhd1 thr592 correlates with loss of its ability to restrict hiv-1.

SIGNOR-201913

P17612

P26678

1

phosphorylation

up-regulates activity

0.492

Phospholamban (PLB) can be phosphorylated at Ser(16) by cyclic AMP-dependent protein kinase. phosphorylation of Ser(16) is sufficient for mediating the maximal cardiac responses to beta-adrenergic stimulation.

SIGNOR-250030

P14780

P01023

2

cleavage

down-regulates quantity by destabilization

0.492

The complex formation was confirmed by the use of 125I-labeled matrix metalloproteinase-2. The cleavage sites in the "bait" regions following formation of high-molecular-weight complexes of matrix metalloproteinases with the alpha-macroglobulins were determined by protein sequence analysis. Pregnancy zone protein was cleaved at Thr693-Tyr694 and alpha2-macroglobulin at Gly679-Leu680 and Arg696-Leu697 by matrix metalloproteinase-2. Matrix metalloproteinase-9 cleaved alpha2-macroglobulin at the same site as matrix metalloproteinase-2, but cleavage of pregnancy zone protein was at Leu753-Ser754.|MMP-2 and MMP-9 cause a significant degradation of these bands and the background, a degradation which is prevented by both a2M and PZP.

SIGNOR-261740

P01023

P14780

2

binding

down-regulates activity

0.492

Both PZP and a2M collagenase complexes incubated with gelatin demonstrated a significant inhibition of the catalytic activity| MMP-2 and MMP-9 cause a significant degradation of these bands and the background, a degradation which is prevented by both a2M and PZP.

SIGNOR-261801

Q8IWV7

O94761

1

binding

up-regulates

0.492

The isolated recql4, assayed as a complex with ubr1 and ubr2, exhibited dna-stimulated atpase activity but was inactive as either dna helicase or dna translocase / the discovery, in the present work, that these ub ligases, ubr1 and ubr2, interact with the putative helicase recql4 (fig. 2), and that recql4 is a long-lived, non-ubiquitylated protein in hela cells

SIGNOR-128169

Q9UKV5

P04035

1

ubiquitination

down-regulates quantity by destabilization

0.492

Gp78 mediates the sterol regulated ubiquitination of HMGCR.

SIGNOR-278622

O60291

Q99816

1

monoubiquitination

up-regulates activity

0.492

In the present study, we identified the first substrate of the Mahogunin E3 ubiquitin–protein ligase: TSG101, a key component of the endosomal sorting ESCRT machinery.We find that Mahogunin interacts with the ubiquitin E2 variant (UEV) domain of TSG101 via its PSAP motif and that it catalyzes monoubiquitylation of TSG101 both in vivo and in vitro. Consistent with the results of the biochemical characterization and subcellular localization studies of Mahogunin, our functional studies provide direct evidence that Mahogunin plays an essential role in regulation of endosome-to-lysosome trafficking. We found that siRNA-mediated depletion of Mahogunin in HeLa cells causes enlargement and clustering of EEA1-positive endosomes and LAMP2-positive late endosomes/lysosomes (Figure 8B) and inhibits the endosomal trafficking of internalized EGF–EGFR complexes to lysosomes for degradation (Figures 9 and and10,10, A and B). These results are strikingly similar to the phenotypes that resulted from depletion of TSG101

SIGNOR-271635

P53350

O96017

1

phosphorylation

up-regulates

0.492

Plk1 overexpression enhances phosphorylation of chk2 at thr-68.

SIGNOR-96637

Q13131

O00418

1

phosphorylation

down-regulates activity

0.492

AMPK can phosphorylate three sites in eEF2 kinase in vitro. Of these, Ser-398 appears to be more efficiently phosphorylated than either Ser-78 or Ser-366. Ser-78 and Ser-366 do not appear to be phosphorylated by AMPK within cells. Ser-366 serves to decrease the activity of eEF2 kinase

SIGNOR-250314

P28799

P19438

1

binding

down-regulates

0.492

Collectively, these findings demonstrate that pgrn is a ligand of tnfr, an antagonist of tnf signaling, and plays a critical role in the pathogenesis of inflammatory arthritis in mice.

SIGNOR-172684

Q9HB89

P50148

1

binding

up-regulates activity

0.492

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-256751

Q15418

Q8TB45

1

phosphorylation

down-regulates

0.492

We found that deptor was rapidly phosphorylated on three serines in a conserved degron, facilitating binding and ubiquitylation by the f box protein _trcp, with consequent proteasomal degradation of deptor. Phosphorylation of the _trcp degron in deptor is executed by ck1

SIGNOR-176883

Q9Y4H4

P63096

1

binding

down-regulates activity

0.492

GPSM3 acts through its two GoLoco motifs to exert GDP dissociation inhibitor activity over Galpha(i) subunits|interactions between GPSM3 and Galphai1 or Gbeta1 (20) was assayed by BRET.

SIGNOR-264864

Q16584

P46734

1

phosphorylation

up-regulates activity

0.492

Immunoprecipitated mlk-3 catalyzed the phosphorylation of sek1 in vitro, and co-transfected mlk-3 induced phosphorylation of sek1 and mkk3 at sites required for activation, suggesting direct regulation of these protein kinases.

SIGNOR-45788

O15552

P50148

1

binding

up-regulates activity

0.492

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-257188

P27361

Q9H9S0

1

phosphorylation

down-regulates

0.492

We found that activation of ERK1 signaling inhibited transactivation activity of Nanog.|We showed the direct phosphorylation of Nanog by ERK1 and clearly showed that Ser52 is the major phosphorylation site and Ser65 is weakly phosphorylated by ERK1.

SIGNOR-278487

Q12772

P04035

1

transcriptional regulation

up-regulates quantity by expression

0.492

The processed SREBP2, designated nuclear SREBP2 (nSREBP2), then enters the nucleus as a homodimer, binds to the sterol regulatory element (SRE) sequence in the promoters of target genes, including HMGCR and SQLE (encoding squalene monooxygenase), and upregulates their transcription

SIGNOR-265161

P23759

P13349

1

transcriptional regulation

up-regulates quantity by expression

0.492

Together, these experiments indicate that Pax7 enforces satellite cell commitment by recruiting a HMT complex to Myf5, resulting in transcriptional activation.

SIGNOR-255641

P38405

Q9NVN3

1

binding

up-regulates activity

0.492

In the olfactory sensory neurons located in the nasal epithelium, OR activation by odorants or other stimuli can switch on a specific olfactory G-protein (GNAL), which in turn stimulatesand ADCY3 and Ric8b leads to cyclic adenosine monophosphate (cAMP) generation from adenosine triphosphate (ATP)

SIGNOR-278071

P21741

Q04721

1

binding

up-regulates

0.491

We showed that mk binds to the notch2 receptor in hacat keratinocytes. We further found that mk activates notch2

SIGNOR-161427

Q9H4A3

P55011

1

phosphorylation

up-regulates activity

0.491

Combining these biochemical studies with the live cell imaging data, these results collectively suggest that the entire CTD is necessary for WNK1 to drive optimal SPAK/OSR1 activation and downstream NKCC1/KCC phosphorylation via PS.

SIGNOR-277859

Q9UKY1

Q15326

1

binding

down-regulates activity

0.491

Corepressor BS69 interacts with ZHX1, a member of the ZHX family having zinc-fingers and homeoboxes. Although BS69 was originally found as a corepressor interacting with ZHX1, BS69 was also found to function as a transcriptional activator in HEK293 cells, in which the activation required the MYND domain of BS69. Co-transfection of BS69 with a mutant form of ZHX1, which cannot interact with BS69, led to increase the transcriptional activation of BS69, suggesting that transcriptional activation mediated by BS69 is suppressed by ZHX1.

SIGNOR-263898

Q00403

Q12947

1

binding

up-regulates activity

0.491

The human forkhead protein FREAC-2 contains two functionally redundant activation domains and interacts with TBP and TFIIB. FREAC-2 dependent activation of transcription by TFIIB.

SIGNOR-220317

P53611

P20339

1

lipidation

up-regulates activity

0.491

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-265573

P34981

P50148

1

binding

up-regulates activity

0.491

TRH receptors are textbook calcium-mobilizing receptors: they are coupled to Gq and G11, which activate phospholipase Cβ (PLCβ).

SIGNOR-267202

P53350

O43524

1

phosphorylation

down-regulates activity

0.491

Furthermore, PLK1 can directly phosphorylate FOXO3 in an in vitro kinase assay.|PLK1 induces translocation of FOXO3 from the nucleus to the cytoplasm and suppresses FOXO3 activity, measured by the decrease in the pro-apoptotic Bim protein levels and in the cell cycle inhibitor protein p27.

SIGNOR-279095

Q9HBW0

Q03113

1

binding

up-regulates

0.491

Lysophosphatidic acid (lpa), a major g protein coupled receptor (gpcr)-activating ligand present in serum, elicits growth factor like responses by stimulating specific gpcrs coupled to heterotrimeric g proteins such as g(i), g(q), and g12/13. lpa2 also can couple to the gi/o, g12/13, and gqfamilies.

SIGNOR-135834

P35408

P63092

1

binding

up-regulates activity

0.491

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-256760

Q9NYJ7

P46531

1

binding

up-regulates activity

0.491

Notch signaling is a highly conserved pathway involved in cell fate choice during development with Delta and Jagged constituting the two evolutionary conserved families of Notch ligands. These ligands are transmembrane proteins with conserved biochemical structure that share their receptors and signal through a common mechanism. Upon ligand binding Notch receptors are proteoliticaly cleaved, the intracellular domain of Notch (NICD) is released and translocated to the nucleus, where it activates target genes. In mammals, four receptors and five ligands have been described. Delta-1, Delta-3 and Delta-4 are homologues to Drosophila Delta and Jagged-1 and Jagged-2 to Drosophila Serrate.

SIGNOR-209738

Q13976

Q9Y210

1

phosphorylation

down-regulates activity

0.491

PKG phosphorylated TRPC6, and both T70 and S322 were targeted. Both sites were functionally relevant, as 8Br-cGMP strongly suppressed current in wild-type TRPC6 channels, but not in those with phospho-silencing mutations (T70A, S322A or S322Q).

SIGNOR-276271

P62834

Q9P212

1

binding

up-regulates quantity

0.491

The SUR1 subunit of KATP channels recruits Epac2 to the plasma membrane where a signaling complex comprised of Epac2, Rap1 and PLC-ε is formed. Rap1 is activated by Epac2, and the activated form of Rap1 binds to and activates PLC-ε.

SIGNOR-278142

Q8IV63

O75531

1

phosphorylation

down-regulates activity

0.491

Although VRK3 has been regarded as a genuine pseudokinase from structural and biochemical studies, recent reports suggest that VRK3 acts as an active kinase as well as a signaling scaffold in cells. Here, we demonstrate that VRK3 phosphorylates the nuclear envelope protein barrier-to-autointegration factor (BAF) on Ser4.|Ectopic expression of VRK3 induces the translocation of BAF from the nucleus to the cytoplasm. I

SIGNOR-264564

Q96G30

Q01726

1

binding

down-regulates activity

0.491

We report that MRAP and MRAP2 can interact with all 5 MCRs. This interaction results in MC2R surface expression and signaling. In contrast, MRAP and MRAP2 can reduce MC1R, MC3R, MC4R, and MC5R responsiveness to [Nle4,D-Phe7]alpha-melanocyte-stimulating hormone (NDP-MSH). MRAP and MRAP2 can reduce the surface expression of MC4R and also the signaling of this receptor. we observed a significant decrease in the cell-surface expression of MC4R and MC5R in the presence of MRAP and MRAP2. It is interesting that MRAP and MRAP2 have opposite effects in the modulation of different MCR family members.

SIGNOR-252365

P31749

Q9Y2I7

1

phosphorylation

up-regulates

0.491

Here we report that serine318 on the fyve domain-containing ptdins3p 5-kinase (pikfyve) is a novel substrate for pkb, and show that phosphorylation stimulates the ptdins3p 5-kinase activity of the enzyme.

SIGNOR-252474

Q99836

Q08211

1

binding

up-regulates activity

0.491

We further showed that both DHX9 and DHX36 are localized within the cytosol and are directly bound to the Toll-interleukin receptor domain of MyD88 via their helicase-associated domain 2 and DUF domains. This study demonstrates that DHX9/DHX36 represent the MyD88-dependent DNA sensors in the cytosol of pDCs and suggests a much broader role for DHX helicases in viral sensing.

SIGNOR-260955

Q03112

P84022

1

binding

down-regulates

0.491

Evi-1 interacts with smad3, an intracellular mediator of tgf-beta signalling, thereby suppressing the transcriptional activity of smad3.

SIGNOR-59132