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
P08754	P43657	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-256868
P18846	Q13555	0	phosphorylation	up-regulates activity	0.299	Phosphopeptide mapping analysis and Western blotting studies demonstrated that in vitro, CaMK II phosphorylates only Ser63 (corresponding to Ser133 of CREB), which is essential for the activation, and not Ser72 (corresponding to Ser142 of CREB), which is a negative regulation site.	SIGNOR-250692
P23769	P20396	1	transcriptional regulation	up-regulates quantity by expression	0.263	The rat prepro-TRH gene is activated by GATA2.	SIGNOR-267259
Q9Y5H9	Q9Y5G3	2	binding	up-regulates activity	0.2	The clustered protocadherins comprise the largest subfamily of the cadherin superfamily and are predominantly expressed in the nervous system. Pcdh-alpha proteins interact with beta1-integrin to promote cell adhesion. They also form oligomers with Pcdh-gamma proteins at the same membrane sites.	SIGNOR-265681
P54646	P17612	0	phosphorylation	down-regulates	0.42	Pka associates with and phosphorylates ampk?1 At ser-173 to impede threonine thr-172 phosphorylation and thus activation of ampk1 by lkb1 in response to lipolytic signals	SIGNOR-161860
O95819	Q15797	1	phosphorylation	down-regulates activity	0.2	Msn kinases directly phosphorylate α-helix 1 of Smad. we have identified Misshapen (Msn) and the mammalian orthologs TNIK, MINK1, and MAP4K4 as the kinases responsible for α-helix 1 phosphorylation.	SIGNOR-276335
P55075	Q05925	0	transcriptional regulation	down-regulates quantity by repression	0.452	Our results in ES cells suggest that Engrailed inhibits Fgf8 expression in the absence of Pbx1. We identified single Engrailed- and Pbx-binding sites in the Fgf8 intron that inhibit expression of Fgf8 in mouse ES cells, but that together can allow full Fgf8 expression. Our data support the model that Engrailed heterodimerized with Pbx might activate transcription, while Engrailed or Pbx proteins alone might repress transcription	SIGNOR-265776
Q12778	Q96J02	0	ubiquitination	down-regulates quantity by destabilization	0.258	Mechanistically, Itch ubiquitinates Foxo1 for proteasomal degradation.	SIGNOR-278698
Q15116	P06493	0	phosphorylation	down-regulates quantity by destabilization	0.2	We demonstrated that cyclin-dependent kinase 1-mediated phosphorylation of Ser261 residue primes PD-1 protein nucleus translocation and binding with FBW7.	SIGNOR-277605
P31749	P26358	1	phosphorylation	up-regulates	0.527	Akt1 kinase colocalizes and directly interacts with dnmt1 and phosphorylates ser143. Phosphorylated dnmt1 peaks during dna synthesis, before dnmt1 methylation. Depletion of akt1 or overexpression of dominant-negative akt1 increases methylated dnmt1, resulting in a decrease in dnmt1 abundance. In mammalian cells, phosphorylated dnmt1 is more stable than methylated dnmt1.	SIGNOR-170530
O94953	P28482	0	phosphorylation	up-regulates quantity by stabilization	0.2	In addition, the phosphorylation of JMJD2B via p-ERK at Thr305, Ser352, Ser566 and Thr1065 contribute to JMJD2B stability. p-ERK stabilizes the JMJD2B protein level by protecting JMJD2B from ubiquitination and proteasome degradation.	SIGNOR-276744
P78527	O96017	1	phosphorylation	up-regulates	0.59	We have found that dna-pk is the major constituent of an activity present in extracts of mammalian cells that phosphorylates chk2. Our results suggest that hypophosphorylated chk2 can be phosphorylated at thr68 by dna-pk in vitro.	SIGNOR-133384
Q9HBH9	P06730	1	phosphorylation	up-regulates	0.56	Inhibition of mammalian target of rapamycin induces phosphatidylinositol 3-kinase-dependent and mnk-mediated eukaryotic translation initiation factor 4e phosphorylation.Therefore, eif4e is considered a survival protein involved in cell cycle progression, cell transformation, and apoptotic resistance. Phosphorylation of eif4e (usually at ser209) increases its binding affinity for the cap of mrna and may also favor its entry into initiation complexes.	SIGNOR-157537
P78527	Q96SD1	1	phosphorylation	up-regulates	0.699	Artemis is a nuclear phosphoprotein required for genomic integrity whose phosphorylation is increased subsequent to dna damage. Artemis phosphorylation by the dna-dependent protein kinase (dna-pk). However, regardless of its association with dna-pkcs, phosphorylation of artemis at both s516 and s645 was stimulated in response to the double-stranded dna-damaging agent bleomycin	SIGNOR-148327
Q16512	P36871	1	phosphorylation	up-regulates	0.2	Pak1-mediated phosphorylation of pgm selectively on threonine 466 significantly increased pgm enzymatic activity	SIGNOR-128722
P10636	Q5S007	0	phosphorylation	down-regulates	0.528	Lrrk2 directly phosphorylates tubulin-associated tau, but not free tau;(iii) lrrk2 phosphorylates tau at thr181 as one of the target sites;. furthermore, we revealed that lrrk2-mediated phosphorylation of tau reduces its tubulin-binding ability.	SIGNOR-195756
P49593	O95835	1	dephosphorylation	down-regulates activity	0.2	POPX2 is capable of dephosphorylating LATS1 at Thr1079 (Figure xref ), which is a residue critical for LATS1 activity.\|POPX2 might negatively regulate the activities of MST1 and LATS1 through dephosphorylation.\|We found that POPX2 could dephosphorylate LATS1 on Threonine-1079, leading to inactivation of LATS1 kinase.	SIGNOR-276989
P17661	P13349	0	transcriptional regulation	up-regulates quantity by expression	0.241	Desmin, the muscle specific intermediate filament (IF) protein, is expressed at low levels in myoblasts and at the onset of differentiation its expression increases several fold. In an effort to explore the mechanism involved in the tissue-specific and developmentally regulated expression of desmin, we have isolated the mouse desmin gene.Co-transfection of myoD, myogenin, MRF4 and Myf5, with the desmin-CAT construct into 10T-1/2 cells demonstrated that all these factors could transactivate desmin gene expression	SIGNOR-241494
Q96FE7	P39880	0	transcriptional regulation	down-regulates quantity by repression	0.368	We demonstrate that CUX1 deficiency activates phosphoinositide 3-kinase (PI3K) signaling through direct transcriptional downregulation of the PI3K inhibitor PIK3IP1 (phosphoinositide-3-kinase interacting protein 1), leading to increased tumor growth and susceptibility to PI3K-AKT inhibition.	SIGNOR-260072
Q9UKX7	P28482	0	phosphorylation	down-regulates activity	0.2	Erk phosphorylates nup50 at ser221 and ser315 erk phosphorylation of the fg repeat region of nup50 reduced its affinity for importin-beta family proteins, importin-beta and transportin.	SIGNOR-188135
Q5UIP0	Q13315	2	binding	up-regulates activity	0.499	Human Rif1, ortholog of a yeast telomeric protein, is regulated by ATM and 53BP1 and functions in the S-phase checkpoint. After induction of double-strand breaks (DSBs), Rif1 formed foci that colocalized with other DNA-damage-response factors. This response was strictly dependent on ATM (ataxia telangiectasia mutated) and 53BP1, but not affected by diminished function of ATR (ATM- and Rad3-related kinase), BRCA1, Chk2, Nbs1, and Mre11.	SIGNOR-259059
P08246	P55085	1	cleavage	down-regulates activity	0.395	PAR1E and PAR2E (10 microM) were incubated in the presence of the different proteases \| The enzymes were used at the following concentrations: 0.5 unit/mL thrombin, 2.5 nM trypsin, 20 nM plasmin, 20 nM cathepsin G, 20 nM elastase, 20 nM proteinase 3, and 2 units/mL calpain I and II\|Protease-activated receptors (PARs) mediate cell activation after proteolytic cleavage of their extracellular amino terminus.\|Mass spectrometry studies of PAR2E predicted activation of PAR2 by trypsin through cleavage at the Arg36-Ser37 site, no effect of thrombin, and inactivation of the receptor by plasmin, calpain and leukocyte elastase, cathepsin G, and proteinase 3	SIGNOR-263588
O75962	P06241	0	phosphorylation	up-regulates activity	0.2	Here, we demonstrate that Trio is phosphorylated by Src family kinases in the embryonic rat cortex in response to netrin-1. In vitro, Trio was predominantly phosphorylated at Tyr(2622) by the Src kinase Fyn.	SIGNOR-273855
Q06210	Q13131	0	phosphorylation	down-regulates	0.2	Amp-activated protein kinase phosphorylates glutamine : fructose-6-phosphate amidotransferase 1 at ser243 to modulate its enzymatic activityhe 2-dg induced phosphorylation of gfat1 . The assay of the gfat enzymatic activity in the cell lysates indicated that the 2-dg-treatment inhibited the enzymatic activity	SIGNOR-183528
P18031	P12814	1	dephosphorylation	up-regulates	0.335	Here we report that protein-tyrosine phosphatase 1b (ptp 1b) is an ?-Actinin phosphatase.	SIGNOR-141634
Q14012	Q9NXK8	0	ubiquitination	down-regulates quantity	0.475	Here, we show that a ubiquitin E3 ligase component, F-box protein Fbxl12, mediates CaMKI degradation via a proteasome-directed pathway leading to disruption of cyclin D1/cdk4 complex. Endogenous Fbxl12 and CaMKI interacted as demonstrated after Fbxl12 immuno-precipitation followed by immunoblot analysis with CaMKI antibodies assembly and resultantG1 arrest in lung epithelia. Fbxl12 targets CaMKI for ubiquitination.	SIGNOR-261193
Q13547	P17844	2	binding	up-regulates	0.393	Wt p68 co-immunoprecipitates efficiently with hdac1, the k53r p68 does not / sumoylation is important for the interaction of p68 with hdac1 and for transcriptional repression by p68	SIGNOR-153715
Q8WU20	P22455	0	phosphorylation	up-regulates activity	0.685	In this report, we demonstrate that FGF stimulation induces tyrosine phosphorylation of a novel lipid anchored docking protein, termed FRS2, that forms a complex with Grb2/Sos, thus linking FGF-receptor activation to the Ras/MAPK signaling pathway.	SIGNOR-242661
Q15569	P23528	1	phosphorylation	down-regulates activity	0.528	Like TESK1, TESK2 phosphorylated cofilin specifically at Ser-3 and induced formation of actin stress fibers and focal adhesionsExpression of cofilin or S3A-cofilin into HeLa cells induced marked decreases in rhodamine-phalloidin staining due to the actin binding and -depolymerizing activity of cofilin	SIGNOR-246723
P28482	P42229	1	phosphorylation	up-regulates	0.76	Gh treatment of chinese hamster ovary cells stably transfected with the gh receptor (choa cells) led to rapid and transient activation of both stat5a and erk1 and erk2. these observations show, for the first time, direct physical interaction between erk and stat5a and also clearly identify serine 780 as a target for erk.	SIGNOR-66239
O15552	Q03113	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-257342
P19419	Q13523	0	phosphorylation	up-regulates	0.2	Activated hprp4 phosphorylates residue thr-417 on elk-1 resulting in elk-1 activation.	SIGNOR-77135
P01112	P10398	2	binding	up-regulates	0.838	The raf family of proteins (raf-1, a-raf, and b-raf) is serine/threonine kinases that bind to the effector region of ras-gtp, thus inducing translocation of the protein to the plasma membrane. Once there, raf proteins are activated and phosphorylated by different protein kinases.	SIGNOR-175183
Q7Z434	P17612	0	phosphorylation	down-regulates activity	0.283	Mutagenesis indicated that PKACalpha phosphorylated wild-type VISA and the VISA mutants VISA (S100A), VISA (T234A) and VISA (S238A) but not VISA (T54A) (XREF_FIG, panel C).\|We found that PKACalpha caused degradation of wild-type VISA but not VISA (T54A) or VISA (K7/500R), in which either the PKACs mediated phosphorylation or MARCH5 mediated K48 linked polyubiquitination residues are mutated (XREF_FIG, panel G).	SIGNOR-279649
Q8IZU9	P78352	2	binding	up-regulates activity	0.373	We here report that, through its C-terminal PDZ domain-binding motif, Neph2 directly interacts with postsynaptic density (PSD)-95, an abundant excitatory postsynaptic scaffolding protein. Moreover, Neph2 protein is detected in the brain PSD fraction and interacts with PSD-95 in synaptosomal lysates. Functionally, loss of Neph2 in mice leads to age-specific defects in the synaptic connectivity of DG neurons.	SIGNOR-269079
P29597	P40763	1	phosphorylation	up-regulates	0.687	Since Jak-STAT pathway primarily activated in IL-15-me- diated cell proliferation, we tested whether it is also participates in IL-15-mediated proliferation of FAPs. Interestingly, we found the expression of phospho-Jak3 and phospho-Tyk2, as well as their downstream, phospho- STAT3 and phospho-STAT5, was significantly upregulated	SIGNOR-256255
P41162	P41162	2	transcriptional regulation	down-regulates quantity by repression	0.2	ETV3 target genes including etv3, ddx20, and dusp6 provide negative feedback regulation of ETV3 production and activity. Negative feedback along with constitutive instability may serve to tightly regulate ETV3 abundance. Our date suggest that phosphorylation by ERK2 relieves repression by ETV3, allowing activation of cell cycle control genes including myc, components of the NF-κB pathway, and genes required form RNA processing and translation.	SIGNOR-262778
P06400	P31314	2	binding	down-regulates activity	0.2	ectopic HOX11 expression resulted in hyperphosphorylation of the retinoblastoma protein (Rb), which correlated with inhibition of the major Rb serine/threonine phosphatase PP1.	SIGNOR-240725
Q16236	Q9NP58	1	transcriptional regulation	up-regulates quantity by expression	0.2	NFE2L2 is stabilized and translocates to the nucleus, where it dimerizes with sMAF proteins. This complex binds to AREs to mediate the transcription of genes involved in iron metabolism, GSH metabolism, and ROS detoxification.Two critical enzymes in this pathway, ATP binding cassette subfamily B member 6 (ABCB6) and ferrochelatase (FECH), are regulated by the transcription factor NFE2L2 and play significant roles in inhibiting ferroptosis when upregulated.	SIGNOR-279864
P20336	Q86UR5	0	relocalization	up-regulates activity	0.805	N-terminal interactions of RIMs with RAB3 and MUNC13 regulate DCV fusion. Through N-terminal interactions, RIMs position MUNC13 and recruit DCVs via RAB3, which is located on the vesicle	SIGNOR-264381
Q9NVI1	Q13535	0	phosphorylation	up-regulates activity	0.623	Alternatively, the locally accumulated ATRIP-ATR might have sufficient activity to phosphorylate FANCI without TOPBP1 stimulation.\|The results described above and our previous studies clearly indicated that FANCI phosphorylation is mediated by ATR kinase in a manner dependent on the FA core complex and FANCD2 protein.	SIGNOR-279320
P42702	Q16619	2	binding	up-regulates	0.731	We conclude that gp130/lif receptor and et(a) receptor activation are essential for cardiac fibroblast growth by ct-1	SIGNOR-114758
P10826	P10827	2	binding	up-regulates	0.416	We report that the retinoic acid receptors (rars), a distinct class of nuclear receptors, are also efficient heterodimer partners for trs	SIGNOR-133234
P42336	Q13480	2	binding	up-regulates	0.452	We have shown that gab1 colocalizes pi3k with sh2 domain-containing inositol phosphatase (ship) and shp2, two enzymes that regulate pi3k-dependent signaling. The src homology 2 (sh2) domain of the phosphatidylinositol 3-kinase (pi3k) regulatory subunit binds gab1 in a phosphorylation-independent manner. Moreover, the regulatory subunit of pi3k can mediate the association of gab1 and receptor protein-tyrosine kinases including the insulin, egf, and ngf receptors, all of which phosphorylate gab1.	SIGNOR-83343
P26038	Q9Y5S2	0	phosphorylation	up-regulates activity	0.2	In this study, we have shown that MRCKb phosphorylated moesin at Thr-558 \| We have shown that the phosphorylation is important to the formation of ®lopodia, and that MRCK may regulate this formation through the phosphorylation of ERM proteins at the tip of ®lopodia.	SIGNOR-260802
Q00765	P25024	2	binding	up-regulates activity	0.324	In this study, we found that CXCR1 interacted with REEP5 and REEP6, but CXCR2 did not. Overexpression of REEP5 and REEP6 enhanced IL-8-stimulated cellular responses through CXCR1, whereas depletion of the proteins led to the downregulation of the responses.	SIGNOR-261366
Q06609	P15374	0	deubiquitination	up-regulates activity	0.325	Here we report that ubiquitination of RAD51 hinders RAD51-BRCA2 interaction, while deubiquitination of RAD51 facilitates RAD51-BRCA2 binding and RAD51 recruitment and thus is critical for proper HR. \| UCHL3, in turn, deubiquitinates RAD51 and promotes the binding between RAD51 and BRCA2.\|Our results suggested that three lysine sites (56, 57, and 63) on RAD51 that are close to E59 are deubiquitinated by UCHL3.	SIGNOR-275908
P49841	P10070	1	phosphorylation	down-regulates quantity by destabilization	0.562	The degradation of Gli2 requires the phosphorylation of a cluster of numerous serine residues in its carboxyl terminus by protein kinase A and subsequently by casein kinase 1 and glycogen synthase kinase 3.	SIGNOR-249590
Q16512	O95863	1	phosphorylation	up-regulates	0.2	Pak1 phosphorylation of snail, a master regulator of epithelial-to-mesenchyme transition, modulates snail's subcellular localization and functionswe found for the first time that pak1 promotes transcription repression activity of snail from e-cadherin, occludin, and aromatase promoters. Pak1 regulates the repressor activity of snail by phosphorylating on ser(246). Pak1 phosphorylation of snail supports snail's accumulation in the nucleus as well as its repressor functions.	SIGNOR-135609
Q969V5	Q86WV6	1	ubiquitination	up-regulates activity	0.2	Identification of MUL1 as an essential activator of dsDNA mediated STING dependent pathway.\|We further report that the mitochondrial E3 ubiquitin protein ligase 1 (MUL1, also known as GIDE/MAPL/MULAN/RNF218) ubiquitinates STING on K224 via K63-linked polyubiquitination, which facilitates optimal STING trafficking and the transcription of host defense genes.	SIGNOR-278634
Q99986	Q9H4B4	0	phosphorylation	up-regulates	0.474	Vrk1 does not phosphorylate plk3, but plk3 phosphorylates the c-terminal region of vrk1 in ser342. Vrk1 with substitutions in s342 is catalytically active but blocks golgi fragmentation, indicating that its specific phosphorylation is necessary for this process.	SIGNOR-182858
O14965	Q5FBB7	1	phosphorylation	up-regulates activity	0.2	Loss of INCENP/Aurora B in Mitosis Correlates with Delocalization of MEI-S332\|MEI-S332 Is Phosphorylated by Aurora B In Vitro\|Of these, MEI-S332S124,125,126A was a poor substrate for Aurora B kinase in vitro	SIGNOR-252046
O76064	Q9H0D6	1	ubiquitination	up-regulates activity	0.2	Mechanistically, RNF8 interacts with XRN2, which is crucial for transcription termination and R-loop resolution. We report that RNF8 ubiquitylates XRN2 to facilitate its recruitment to R-loop-prone genomic loci and that RNF8 deficiency in BRCA1-mutant breast cancer cells decreases XRN2 occupancy at R-loop-prone sites, thereby promoting R-loop accumulation, transcription-replication collisions, excessive genomic instability, and cancer cell death.	SIGNOR-277195
Q9P0J1	Q15797	1	dephosphorylation	down-regulates	0.243	We show that the mammalian pdps are important in dephosphorylation of bmp-activated smad1 but not tgf-beta-activated smad2 or smad3. Thus, pdps specifically inactivate smads in the bmp/dpp pathway. [...] These observations suggest that pdp1 and pdp2 are important for dephosphorylation of smad1.	SIGNOR-144876
Q13315	Q9H3D4	1	phosphorylation	down-regulates	0.403	Atm kinase is a master switch for the delta np63 alpha phosphorylation/degradation in human head and neck squamous cell carcinoma cells upon dna damage. We previously found that the pro-apoptotic dna damaging agent, cisplatin, mediated the proteasome-dependent degradation of delta np63 alpha associated with its increased phosphorylated status. We found that delta np63 alpha is phosphorylated in the time-dependent fashion at the following positions: s385, t397 and s466, which were surrounded by recognition motifs for atm, cdk2 and p70s6k kinases, respectively	SIGNOR-180747
Q92598	P68400	0	phosphorylation	down-regulates activity	0.329	Protein kinase CK2 phosphorylates Hsp105 alpha at Ser509 and modulates its function. \| the phosphorylation of Hsp105 alpha at Ser(509) abolished the inhibitory activity of Hsp105 alpha in vitro.	SIGNOR-250901
P35580	Q14814	0	transcriptional regulation	up-regulates quantity by expression	0.322	Myocyte enhancer factor-2 and serum response factor binding elements regulate fast Myosin heavy chain transcription in vivo. We show that the upstream promoter region of the gene most abundantly expressed in mouse skeletal muscles, IIb MyHC, retains binding activity and transcriptional activation for three positive transcription factors, the serum response factor, Oct-1, and myocyte enhancer factor-2, whereas the other two genes (IIa and IId/x) have nucleotide substitutions in these sites that reduce binding and transcriptional activation	SIGNOR-238766
P29590	P06493	0	phosphorylation	down-regulates	0.345	Here, we show that klhl20, a cullin3 (cul3) substrate adaptor induced by hif-1, coordinates with the actions of cdk1/2 and pin1 to mediate hypoxia-induced pml proteasomal degradation.	SIGNOR-176033
Q13555	O43318	1	phosphorylation	up-regulates	0.2	Camkii interacts with and phosphorylates tak1.	SIGNOR-96422
Q7Z4H7	Q8NHV4	2	binding	up-regulates activity	0.813	FAM29A recruits NEDD1 to spindle MTs. Ectopically expressed NEDD1 and FAM29A interact with each other.	SIGNOR-261421
Q14980	P68366	2	binding	up-regulates	0.514	Direct binding of numa to tubulin is mediated by a novel sequence motif in the tail domain that bundles and stabilizes microtubules.	SIGNOR-116788
O75531	Q8IV63	0	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
P63000	Q13009	2	binding	up-regulates	0.75	Lpa-induced rac activation requires tiam1	SIGNOR-94691
P63000	P52757	0	gtpase-activating protein	down-regulates activity	0.64	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-260500
O43379	Q9Y3I1	0	ubiquitination	down-regulates quantity by destabilization	0.2	WDR62 is also negatively regulated by T1053 phosphorylation, leading to the recruitment of F-box and WD repeat domain-containing protein 7 (FBW7) and proteasomal degradation. \|JNK1 can induce the phosphorylation of WDR62 T1053	SIGNOR-271711
P36873	P36897	1	dephosphorylation	down-regulates	0.469	We found smad7 interacts with growth arrest and dna damage protein, gadd34, a regulatory subunit of the protein phosphatase 1 (pp1) holoenzyme, which subsequently recruits catalytic subunit of pp1 (pp1c) to dephosphorylate t?RI.	SIGNOR-121277
Q96FJ2	Q9C0C7	2	binding	down-regulates	0.463	The beclin 1 vps34 complex is tethered to the cytoskeleton through an interaction between the beclin 1 interacting protein ambra1 and dynein light chains 1/2	SIGNOR-168289
Q15418	Q9HC62	1	phosphorylation	down-regulates activity	0.2	Here, we determined that d-flow activated the serine/threonine kinase p90RSK, which subsequently phosphorylated threonine 368 (T368) of SENP2. T368 phosphorylation promoted nuclear export of SENP2, leading to downregulation of eNOS expression and upregulation of proinflammatory adhesion molecule expression and apoptosis.	SIGNOR-273839
Q13131	O15360	1	phosphorylation	up-regulates activity	0.332	FANCA was phosphorylated by AMPK at S347 and phosphorylation increased with MMC treatment. MMC-induced FANCD2 monoubiquitination and nuclear foci formation were compromised in a U2OS cell line that stably overexpressed the S347A mutant form of FANCA compared to wild-type FANCA-overexpressing cells, indicating a requirement for FANCA phosphorylation at S347 for proper activation of the FA/BRCA pathway.	SIGNOR-277264
P17844	O75925	0	sumoylation	up-regulates	0.546	We demonstrate that the sumo e3 ligase pias1 interacts with p68 and enhances its sumo modification in vivo / sumo modification enhances p68 transcriptional repression activity and inhibits the ability of p68 to function as a coactivator of p53.	SIGNOR-153719
Q9NQU5	P52564	0	phosphorylation	up-regulates	0.2	Moreover, pak6 was directly activated by mkk6, and mutation of tyrosine 566 in a consensus mkk6 site (threonine-proline-tyrosine, tpy) in the activation loop of the pak6 kinase domain prevented activation by mkk6.	SIGNOR-130975
P53778	Q13424	1	phosphorylation	up-regulates	0.668	Sapk3 phosphorylates alpha1-syntrophin at serine residues 193 and 201 in vitro and phosphorylation is dependent on binding to the pdz domain of alpha1-syntrophin. The finding that sapk3 co-localizes with _1-syntrophin in skeletal muscle, that it binds to the pdz domain of _1-syntrophin, and that phosphorylation of _1-syntrophin depends on this interaction identifies a novel mechanism for targeting a protein kinase to its substrates.	SIGNOR-67061
Q12852	O14950	1	phosphorylation	up-regulates	0.2	Zip kinase (hzipk) phosphorylated the regulatory light chain of myosin ii (mrlc) at both ser19 and thr18 in vitro. In this study, we demonstrate that hzipk also induces the diphosphorylation of mrlc in nonmuscle cells.	SIGNOR-113664
Q96LB1	O00230	2	binding	up-regulates	0.511	The mrgx2 receptor has been shown to be activated by the peptides cortistatin and proadrenomedullin n-terminal peptides (pamp)	SIGNOR-139855
Q05655	P08913	1	phosphorylation	up-regulates activity	0.533	Taken together, these results indicate that S232 acts as a selective, PKC-sensitive, modulator of effector coupling of the alpha(2A)AR to inositol phosphate stimulation. This represents one mechanism by which cells route stimuli directed to multifunctional receptors to selected effectors so as to attain finely targeted signaling.	SIGNOR-249126
Q16539	Q9Y6Q9	1	phosphorylation	up-regulates activity	0.526	P38 MAPK and JNK can phosphorylate multiple sites on SRC-3, including S505, S543, S860, and S867. Our results suggest that several kinases are important for phosphorylating SRC-3 and enhancing its interaction with DNA-dependent transcription factors and other coactivators.	SIGNOR-250103
P00533	Q9NY28	0	glycosylation	down-regulates activity	0.2	Interestingly, the O-GalNAcylation of EGFR, which is the key factor related to the metastasis cascade, was impacted by GALNT8. Furthermore, our results suggested that the GALNT8-mediated O-GalNAcylation led to the suppression of the EGFR signaling pathway and metastatic potential in breast cancer cells.	SIGNOR-269679
P31749	P15976	1	phosphorylation	up-regulates	0.514	We found that akt directly phosphorylates the transcription factor gata-1 at serine 310 and that this site-specific phosphorylation is required for the transcriptional activation of the timp-1 promoter.	SIGNOR-139782
P04629	P00519	2	binding	up-regulates	0.536	Autophosphorylated trka binds directly to plc?, Abl, and shc.	SIGNOR-75402
O14525	O75129	2	binding	down-regulates quantity	0.2	Biochemical and flow cytometry experiments show that ASTN2 forms a complex with ASTN1 and regulates surface expression of ASTN1. Coexpression with ASTN2 reduces the cell surface localization of ASTN1.	SIGNOR-269813
Q96M94	Q99708	2	binding	down-regulates quantity by destabilization	0.474	Here, we identify the Cullin3 E3 ligase substrate adaptor Kelch-like protein 15 (KLHL15) as a new interaction partner of CtIP and show that KLHL15 promotes CtIP protein turnover via the ubiquitin-proteasome pathway.	SIGNOR-272410
P31749	P07550	1	phosphorylation	down-regulates	0.354	Akt mediates sequestration of the beta(2)-adrenergic receptor in response to insulin. Phosphorylation studies of the c-terminal cytoplasmic domain of the beta(2)-adrenergic receptor by akt in vitro identified ser(345) and ser(346) within a consensus motif for akt phosphorylation.	SIGNOR-252470
P58753	Q99836	2	binding	up-regulates activity	0.635	Here we describe a protein, Mal (MyD88-adapter-like), which joins MyD88 as a cytoplasmic TlR-domain-containing protein in the human genome. Mal activates NF-_B, Jun amino-terminal kinase and extracellular signal-regulated kinase-1 and -2.	SIGNOR-252063
Q9Y4P1	P60520	1	cleavage	up-regulates activity	0.844	In mammals, at least three atg8 homologs, lc3, gabarap, and gate-16, have been identified (fig. 1a), all of which have structural ubiquitin folds (1416). In vivo and in vitro biochemical analyses have shown that human atg4b is an authentic cysteine protease essential for cleavage of the c terminus of each atg8 homolog to expose the c-terminal gly	SIGNOR-141932
Q9HC78	P25963	1	transcriptional regulation	down-regulates quantity by repression	0.259	ChIP and next generation high-throughput DNA sequencing assay showed that ZBTB20 specifically bound to IκBα gene promoter (+1 to +60 region) after TLR activation. ZBTB20 could inhibit IκBα gene transcription, govern IκBα protein expression, and then promote NF-κB activation. Therefore, transcriptional repressor ZBTB20 is needed to promote full activation of TLR signaling and TLR-triggered innate immune response by selectively suppressing the suppressor IκBα gene transcription.	SIGNOR-266868
Q06710	P84022	2	binding	down-regulates activity	0.366	DNA Binding Activity of Pax8 to the NIS Promoter Is Reduced by Smad3. TGF-Î² decreases Pax8 DNA binding to the NIS promoter and also found a physical interaction between Pax8 and Smad3.	SIGNOR-251992
Q14493	P04908	1	translation regulation	up-regulates quantity by expression	0.2	Synthesis of mature histone mRNA requires only a single processing reaction: an endonucleolytic cleavage between a conserved stem-loop and a purine-rich downstream element to form the 3' end. The stem-loop binding protein (SLBP) is required for processing, and following processing, histone mRNA is transported to the cytoplasm, where SLBP participates in translation of the histone mRNA\|We used radiolabeled probes generated by PCR targeting the open reading frame (ORF) to detect histones H2A, H2B, H3, H4, and H1 and used 7SK snRNA as a loading control (Fig. 2A). The abundance of histone H2A, H2B, H3, and H4 mRNAs is reduced to 37% to 70% of control levels in the SLBP knockdown cells when compared to the C2 control.	SIGNOR-265397
P50750	P10412	1	phosphorylation	down-regulates activity	0.2	These data provide further evidence that CDK9 phosphorylates H1.4-S187, and that the level of pS187-H1.4 at genes is directly related to the extent of co-enrichment of CDK9.\|that enrichment of pS187-H1.4 at genes is positively related to their transcription.	SIGNOR-279691
P15382	P17252	0	phosphorylation	down-regulates activity	0.307	Inhibition of the current was not seen in channels in which Ser103 was replaced by Ala, although other properties of the current were unchanged. These results indicate that inhibition of the potassium current results from direct phosphorylation of the channel subunit protein at Ser103.	SIGNOR-248852
P62837	Q9C026	2	binding	up-regulates activity	0.425	Collectively, these results indicated that TRIM9 is an E3 ligase for its self-ubiquitination and that the ubiquitination of TRIM9 likely serves as a signal for proteasomal degradation. As shown in Fig. 1A, TRIM9 was ubiquitinated by itself when incubated with UbcH5b. In contrast, ubiquitination was observed when incubated with other E2 enzymes. These results suggest that TRIM9 cooperates with UbcH5b for its self-ubiquitination. N	SIGNOR-271420
P12814	Q9BYB0	0	relocalization	up-regulates activity	0.2	SHANK proteins are ‘master’ scaffolding proteins that tether and organize intermediate scaffolding proteins. They are located at excitatory synapses, where they are crucial for proper synaptic development and function. SAPAP proteins subsequently bind to the PDZ domain of members of the SHANK protein family. SHANK proteins then bind to the actin cytoskeleton and to Homer protein, which in turn interacts with mGluRs. Through these extended links, PSD95, SAPAP, SHANK and Homer proteins form a quaternary complex that brings together mGluR and NMDAR complexes in the PSD (FIG. 3).	SIGNOR-264585
Q05513	Q7KZI7	1	phosphorylation	down-regulates	0.266	Hpar-1b is phosphorylated by apkc on threonine 595 importantly, phosphorylation of hpar-1b on t595 negatively regulates the kinase activity and plasma membrane localization of hpar-1b in vivo.	SIGNOR-124217
P27361	Q99956	2	binding	down-regulates	0.704	Here we demonstrate that inactivation of both erk1/2 and p38_ by dusp9/mkp-4 is mediated by a conserved arginine-rich kinase interaction motif located within the amino-terminal non-catalytic domain of the protein.	SIGNOR-176589
Q14353	P51608	0	post transcriptional regulation	up-regulates quantity by expression	0.279	MeCP2 binds to the promoter region of six target genes. ChIP with anti-MeCP2 antibody shows that MeCP2 binds to the promoter regions of activated targets Sst, Oprk1, Gamt, and Gprin1, and repressed targets Mef2c and A2bp1.	SIGNOR-264678
P46940	P17252	0	phosphorylation	up-regulates	0.258	Using a mass spectrometry-based assay, we show that egf induces phosphorylation of iqgap1 ser(1443), a residue known to be phosphorylated by pkcthe nonphosphorylatable iqgap1 s1441a/s1443a had no effect. In contrast, the s1441e/s1443d mutation markedly enhanced the ability of iqgap1 to induce neurite outgrowth.	SIGNOR-128714
P48742	P32243	2	binding	up-regulates activity	0.435	Here we show that OTX2 directly associates with LIM1 and HNF-3beta. The luciferase assay with the P3C sequence, a specific DNA binding sequence for paired-class homeobox genes, has demonstrated that LIM1 enhances, but HNF-3beta represses, OTX2-directed gene expression.	SIGNOR-221161
Q9P227	P61586	1	gtpase-activating protein	down-regulates activity	0.548	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-260479
P19086	P51582	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-257122
O94989	P61586	1	guanine nucleotide exchange factor	up-regulates activity	0.571	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-260540
P78362	P23443	0	phosphorylation	up-regulates activity	0.355	Altogether, these results identify S6K1-phosphorylated SRPK2 as an essential mediator of IGF1-stimulated SG formation in hPDAC cells.\|The nodes of the core SG network are known to contribute to SG formation to varying degrees and it is possible that S6K1-stimulated SRPK2 may impact their contribution; this is consistent with the predicted model whereby SG assembly is subject to regulation by positive and negative cooperativity of extrinsic factors with the core network interactions (14).	SIGNOR-280121

P08754

P43657

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-256868

P18846

Q13555

0

phosphorylation

up-regulates activity

0.299

Phosphopeptide mapping analysis and Western blotting studies demonstrated that in vitro, CaMK II phosphorylates only Ser63 (corresponding to Ser133 of CREB), which is essential for the activation, and not Ser72 (corresponding to Ser142 of CREB), which is a negative regulation site.

SIGNOR-250692

P23769

P20396

1

transcriptional regulation

up-regulates quantity by expression

0.263

The rat prepro-TRH gene is activated by GATA2.

SIGNOR-267259

Q9Y5H9

Q9Y5G3

2

binding

up-regulates activity

0.2

The clustered protocadherins comprise the largest subfamily of the cadherin superfamily and are predominantly expressed in the nervous system. Pcdh-alpha proteins interact with beta1-integrin to promote cell adhesion. They also form oligomers with Pcdh-gamma proteins at the same membrane sites.

SIGNOR-265681

P54646

P17612

0

phosphorylation

down-regulates

0.42

Pka associates with and phosphorylates ampk?1 At ser-173 to impede threonine thr-172 phosphorylation and thus activation of ampk1 by lkb1 in response to lipolytic signals

SIGNOR-161860

O95819

Q15797

1

phosphorylation

down-regulates activity

0.2

Msn kinases directly phosphorylate α-helix 1 of Smad. we have identified Misshapen (Msn) and the mammalian orthologs TNIK, MINK1, and MAP4K4 as the kinases responsible for α-helix 1 phosphorylation.

SIGNOR-276335

P55075

Q05925

0

transcriptional regulation

down-regulates quantity by repression

0.452

Our results in ES cells suggest that Engrailed inhibits Fgf8 expression in the absence of Pbx1. We identified single Engrailed- and Pbx-binding sites in the Fgf8 intron that inhibit expression of Fgf8 in mouse ES cells, but that together can allow full Fgf8 expression. Our data support the model that Engrailed heterodimerized with Pbx might activate transcription, while Engrailed or Pbx proteins alone might repress transcription

SIGNOR-265776

Q12778

Q96J02

0

ubiquitination

down-regulates quantity by destabilization

0.258

Mechanistically, Itch ubiquitinates Foxo1 for proteasomal degradation.

SIGNOR-278698

Q15116

P06493

0

phosphorylation

down-regulates quantity by destabilization

0.2

We demonstrated that cyclin-dependent kinase 1-mediated phosphorylation of Ser261 residue primes PD-1 protein nucleus translocation and binding with FBW7.

SIGNOR-277605

P31749

P26358

1

phosphorylation

up-regulates

0.527

Akt1 kinase colocalizes and directly interacts with dnmt1 and phosphorylates ser143. Phosphorylated dnmt1 peaks during dna synthesis, before dnmt1 methylation. Depletion of akt1 or overexpression of dominant-negative akt1 increases methylated dnmt1, resulting in a decrease in dnmt1 abundance. In mammalian cells, phosphorylated dnmt1 is more stable than methylated dnmt1.

SIGNOR-170530

O94953

P28482

0

phosphorylation

up-regulates quantity by stabilization

0.2

In addition, the phosphorylation of JMJD2B via p-ERK at Thr305, Ser352, Ser566 and Thr1065 contribute to JMJD2B stability. p-ERK stabilizes the JMJD2B protein level by protecting JMJD2B from ubiquitination and proteasome degradation.

SIGNOR-276744

P78527

O96017

1

phosphorylation

up-regulates

0.59

We have found that dna-pk is the major constituent of an activity present in extracts of mammalian cells that phosphorylates chk2. Our results suggest that hypophosphorylated chk2 can be phosphorylated at thr68 by dna-pk in vitro.

SIGNOR-133384

Q9HBH9

P06730

1

phosphorylation

up-regulates

0.56

Inhibition of mammalian target of rapamycin induces phosphatidylinositol 3-kinase-dependent and mnk-mediated eukaryotic translation initiation factor 4e phosphorylation.Therefore, eif4e is considered a survival protein involved in cell cycle progression, cell transformation, and apoptotic resistance. Phosphorylation of eif4e (usually at ser209) increases its binding affinity for the cap of mrna and may also favor its entry into initiation complexes.

SIGNOR-157537

P78527

Q96SD1

1

phosphorylation

up-regulates

0.699

Artemis is a nuclear phosphoprotein required for genomic integrity whose phosphorylation is increased subsequent to dna damage. Artemis phosphorylation by the dna-dependent protein kinase (dna-pk). However, regardless of its association with dna-pkcs, phosphorylation of artemis at both s516 and s645 was stimulated in response to the double-stranded dna-damaging agent bleomycin

SIGNOR-148327

Q16512

P36871

1

phosphorylation

up-regulates

0.2

Pak1-mediated phosphorylation of pgm selectively on threonine 466 significantly increased pgm enzymatic activity

SIGNOR-128722

P10636

Q5S007

0

phosphorylation

down-regulates

0.528

Lrrk2 directly phosphorylates tubulin-associated tau, but not free tau;(iii) lrrk2 phosphorylates tau at thr181 as one of the target sites;. furthermore, we revealed that lrrk2-mediated phosphorylation of tau reduces its tubulin-binding ability.

SIGNOR-195756

P49593

O95835

1

dephosphorylation

down-regulates activity

0.2

POPX2 is capable of dephosphorylating LATS1 at Thr1079 (Figure xref ), which is a residue critical for LATS1 activity.|POPX2 might negatively regulate the activities of MST1 and LATS1 through dephosphorylation.|We found that POPX2 could dephosphorylate LATS1 on Threonine-1079, leading to inactivation of LATS1 kinase.

SIGNOR-276989

P17661

P13349

0

transcriptional regulation

up-regulates quantity by expression

0.241

Desmin, the muscle specific intermediate filament (IF) protein, is expressed at low levels in myoblasts and at the onset of differentiation its expression increases several fold. In an effort to explore the mechanism involved in the tissue-specific and developmentally regulated expression of desmin, we have isolated the mouse desmin gene.Co-transfection of myoD, myogenin, MRF4 and Myf5, with the desmin-CAT construct into 10T-1/2 cells demonstrated that all these factors could transactivate desmin gene expression

SIGNOR-241494

Q96FE7

P39880

0

transcriptional regulation

down-regulates quantity by repression

0.368

We demonstrate that CUX1 deficiency activates phosphoinositide 3-kinase (PI3K) signaling through direct transcriptional downregulation of the PI3K inhibitor PIK3IP1 (phosphoinositide-3-kinase interacting protein 1), leading to increased tumor growth and susceptibility to PI3K-AKT inhibition.

SIGNOR-260072

Q9UKX7

P28482

0

phosphorylation

down-regulates activity

0.2

Erk phosphorylates nup50 at ser221 and ser315 erk phosphorylation of the fg repeat region of nup50 reduced its affinity for importin-beta family proteins, importin-beta and transportin.

SIGNOR-188135

Q5UIP0

Q13315

2

binding

up-regulates activity

0.499

Human Rif1, ortholog of a yeast telomeric protein, is regulated by ATM and 53BP1 and functions in the S-phase checkpoint. After induction of double-strand breaks (DSBs), Rif1 formed foci that colocalized with other DNA-damage-response factors. This response was strictly dependent on ATM (ataxia telangiectasia mutated) and 53BP1, but not affected by diminished function of ATR (ATM- and Rad3-related kinase), BRCA1, Chk2, Nbs1, and Mre11.

SIGNOR-259059

P08246

P55085

1

cleavage

down-regulates activity

0.395

PAR1E and PAR2E (10 microM) were incubated in the presence of the different proteases | The enzymes were used at the following concentrations: 0.5 unit/mL thrombin, 2.5 nM trypsin, 20 nM plasmin, 20 nM cathepsin G, 20 nM elastase, 20 nM proteinase 3, and 2 units/mL calpain I and II|Protease-activated receptors (PARs) mediate cell activation after proteolytic cleavage of their extracellular amino terminus.|Mass spectrometry studies of PAR2E predicted activation of PAR2 by trypsin through cleavage at the Arg36-Ser37 site, no effect of thrombin, and inactivation of the receptor by plasmin, calpain and leukocyte elastase, cathepsin G, and proteinase 3

SIGNOR-263588

O75962

P06241

0

phosphorylation

up-regulates activity

0.2

Here, we demonstrate that Trio is phosphorylated by Src family kinases in the embryonic rat cortex in response to netrin-1. In vitro, Trio was predominantly phosphorylated at Tyr(2622) by the Src kinase Fyn.

SIGNOR-273855

Q06210

Q13131

0

phosphorylation

down-regulates

0.2

Amp-activated protein kinase phosphorylates glutamine : fructose-6-phosphate amidotransferase 1 at ser243 to modulate its enzymatic activityhe 2-dg induced phosphorylation of gfat1 . The assay of the gfat enzymatic activity in the cell lysates indicated that the 2-dg-treatment inhibited the enzymatic activity

SIGNOR-183528

P18031

P12814

1

dephosphorylation

up-regulates

0.335

Here we report that protein-tyrosine phosphatase 1b (ptp 1b) is an ?-Actinin phosphatase.

SIGNOR-141634

Q14012

Q9NXK8

0

ubiquitination

down-regulates quantity

0.475

Here, we show that a ubiquitin E3 ligase component, F-box protein Fbxl12, mediates CaMKI degradation via a proteasome-directed pathway leading to disruption of cyclin D1/cdk4 complex. Endogenous Fbxl12 and CaMKI interacted as demonstrated after Fbxl12 immuno-precipitation followed by immunoblot analysis with CaMKI antibodies assembly and resultantG1 arrest in lung epithelia. Fbxl12 targets CaMKI for ubiquitination.

SIGNOR-261193

Q13547

P17844

2

binding

up-regulates

0.393

Wt p68 co-immunoprecipitates efficiently with hdac1, the k53r p68 does not / sumoylation is important for the interaction of p68 with hdac1 and for transcriptional repression by p68

SIGNOR-153715

Q8WU20

P22455

0

phosphorylation

up-regulates activity

0.685

In this report, we demonstrate that FGF stimulation induces tyrosine phosphorylation of a novel lipid anchored docking protein, termed FRS2, that forms a complex with Grb2/Sos, thus linking FGF-receptor activation to the Ras/MAPK signaling pathway.

SIGNOR-242661

Q15569

P23528

1

phosphorylation

down-regulates activity

0.528

Like TESK1, TESK2 phosphorylated cofilin specifically at Ser-3 and induced formation of actin stress fibers and focal adhesionsExpression of cofilin or S3A-cofilin into HeLa cells induced marked decreases in rhodamine-phalloidin staining due to the actin binding and -depolymerizing activity of cofilin

SIGNOR-246723

P28482

P42229

1

phosphorylation

up-regulates

0.76

Gh treatment of chinese hamster ovary cells stably transfected with the gh receptor (choa cells) led to rapid and transient activation of both stat5a and erk1 and erk2. these observations show, for the first time, direct physical interaction between erk and stat5a and also clearly identify serine 780 as a target for erk.

SIGNOR-66239

O15552

Q03113

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-257342

P19419

Q13523

0

phosphorylation

up-regulates

0.2

Activated hprp4 phosphorylates residue thr-417 on elk-1 resulting in elk-1 activation.

SIGNOR-77135

P01112

P10398

2

binding

up-regulates

0.838

The raf family of proteins (raf-1, a-raf, and b-raf) is serine/threonine kinases that bind to the effector region of ras-gtp, thus inducing translocation of the protein to the plasma membrane. Once there, raf proteins are activated and phosphorylated by different protein kinases.

SIGNOR-175183

Q7Z434

P17612

0

phosphorylation

down-regulates activity

0.283

Mutagenesis indicated that PKACalpha phosphorylated wild-type VISA and the VISA mutants VISA (S100A), VISA (T234A) and VISA (S238A) but not VISA (T54A) (XREF_FIG, panel C).|We found that PKACalpha caused degradation of wild-type VISA but not VISA (T54A) or VISA (K7/500R), in which either the PKACs mediated phosphorylation or MARCH5 mediated K48 linked polyubiquitination residues are mutated (XREF_FIG, panel G).

SIGNOR-279649

Q8IZU9

P78352

2

binding

up-regulates activity

0.373

We here report that, through its C-terminal PDZ domain-binding motif, Neph2 directly interacts with postsynaptic density (PSD)-95, an abundant excitatory postsynaptic scaffolding protein. Moreover, Neph2 protein is detected in the brain PSD fraction and interacts with PSD-95 in synaptosomal lysates. Functionally, loss of Neph2 in mice leads to age-specific defects in the synaptic connectivity of DG neurons.

SIGNOR-269079

P29597

P40763

1

phosphorylation

up-regulates

0.687

Since Jak-STAT pathway primarily activated in IL-15-me- diated cell proliferation, we tested whether it is also participates in IL-15-mediated proliferation of FAPs. Interestingly, we found the expression of phospho-Jak3 and phospho-Tyk2, as well as their downstream, phospho- STAT3 and phospho-STAT5, was significantly upregulated

SIGNOR-256255

P41162

2

transcriptional regulation

down-regulates quantity by repression

0.2

ETV3 target genes including etv3, ddx20, and dusp6 provide negative feedback regulation of ETV3 production and activity. Negative feedback along with constitutive instability may serve to tightly regulate ETV3 abundance. Our date suggest that phosphorylation by ERK2 relieves repression by ETV3, allowing activation of cell cycle control genes including myc, components of the NF-κB pathway, and genes required form RNA processing and translation.

SIGNOR-262778

P06400

P31314

2

binding

down-regulates activity

0.2

ectopic HOX11 expression resulted in hyperphosphorylation of the retinoblastoma protein (Rb), which correlated with inhibition of the major Rb serine/threonine phosphatase PP1.

SIGNOR-240725

Q16236

Q9NP58

1

transcriptional regulation

up-regulates quantity by expression

0.2

NFE2L2 is stabilized and translocates to the nucleus, where it dimerizes with sMAF proteins. This complex binds to AREs to mediate the transcription of genes involved in iron metabolism, GSH metabolism, and ROS detoxification.Two critical enzymes in this pathway, ATP binding cassette subfamily B member 6 (ABCB6) and ferrochelatase (FECH), are regulated by the transcription factor NFE2L2 and play significant roles in inhibiting ferroptosis when upregulated.

SIGNOR-279864

P20336

Q86UR5

0

relocalization

up-regulates activity

0.805

N-terminal interactions of RIMs with RAB3 and MUNC13 regulate DCV fusion. Through N-terminal interactions, RIMs position MUNC13 and recruit DCVs via RAB3, which is located on the vesicle

SIGNOR-264381

Q9NVI1

Q13535

0

phosphorylation

up-regulates activity

0.623

Alternatively, the locally accumulated ATRIP-ATR might have sufficient activity to phosphorylate FANCI without TOPBP1 stimulation.|The results described above and our previous studies clearly indicated that FANCI phosphorylation is mediated by ATR kinase in a manner dependent on the FA core complex and FANCD2 protein.

SIGNOR-279320

P42702

Q16619

2

binding

up-regulates

0.731

We conclude that gp130/lif receptor and et(a) receptor activation are essential for cardiac fibroblast growth by ct-1

SIGNOR-114758

P10826

P10827

2

binding

up-regulates

0.416

We report that the retinoic acid receptors (rars), a distinct class of nuclear receptors, are also efficient heterodimer partners for trs

SIGNOR-133234

P42336

Q13480

2

binding

up-regulates

0.452

We have shown that gab1 colocalizes pi3k with sh2 domain-containing inositol phosphatase (ship) and shp2, two enzymes that regulate pi3k-dependent signaling. The src homology 2 (sh2) domain of the phosphatidylinositol 3-kinase (pi3k) regulatory subunit binds gab1 in a phosphorylation-independent manner. Moreover, the regulatory subunit of pi3k can mediate the association of gab1 and receptor protein-tyrosine kinases including the insulin, egf, and ngf receptors, all of which phosphorylate gab1.

SIGNOR-83343

P26038

Q9Y5S2

0

phosphorylation

up-regulates activity

0.2

In this study, we have shown that MRCKb phosphorylated moesin at Thr-558 | We have shown that the phosphorylation is important to the formation of ®lopodia, and that MRCK may regulate this formation through the phosphorylation of ERM proteins at the tip of ®lopodia.

SIGNOR-260802

Q00765

P25024

2

binding

up-regulates activity

0.324

In this study, we found that CXCR1 interacted with REEP5 and REEP6, but CXCR2 did not. Overexpression of REEP5 and REEP6 enhanced IL-8-stimulated cellular responses through CXCR1, whereas depletion of the proteins led to the downregulation of the responses.

SIGNOR-261366

Q06609

P15374

0

deubiquitination

up-regulates activity

0.325

Here we report that ubiquitination of RAD51 hinders RAD51-BRCA2 interaction, while deubiquitination of RAD51 facilitates RAD51-BRCA2 binding and RAD51 recruitment and thus is critical for proper HR. | UCHL3, in turn, deubiquitinates RAD51 and promotes the binding between RAD51 and BRCA2.|Our results suggested that three lysine sites (56, 57, and 63) on RAD51 that are close to E59 are deubiquitinated by UCHL3.

SIGNOR-275908

P49841

P10070

1

phosphorylation

down-regulates quantity by destabilization

0.562

The degradation of Gli2 requires the phosphorylation of a cluster of numerous serine residues in its carboxyl terminus by protein kinase A and subsequently by casein kinase 1 and glycogen synthase kinase 3.

SIGNOR-249590

Q16512

O95863

1

phosphorylation

up-regulates

0.2

Pak1 phosphorylation of snail, a master regulator of epithelial-to-mesenchyme transition, modulates snail's subcellular localization and functionswe found for the first time that pak1 promotes transcription repression activity of snail from e-cadherin, occludin, and aromatase promoters. Pak1 regulates the repressor activity of snail by phosphorylating on ser(246). Pak1 phosphorylation of snail supports snail's accumulation in the nucleus as well as its repressor functions.

SIGNOR-135609

Q969V5

Q86WV6

1

ubiquitination

up-regulates activity

0.2

Identification of MUL1 as an essential activator of dsDNA mediated STING dependent pathway.|We further report that the mitochondrial E3 ubiquitin protein ligase 1 (MUL1, also known as GIDE/MAPL/MULAN/RNF218) ubiquitinates STING on K224 via K63-linked polyubiquitination, which facilitates optimal STING trafficking and the transcription of host defense genes.

SIGNOR-278634

Q99986

Q9H4B4

0

phosphorylation

up-regulates

0.474

Vrk1 does not phosphorylate plk3, but plk3 phosphorylates the c-terminal region of vrk1 in ser342. Vrk1 with substitutions in s342 is catalytically active but blocks golgi fragmentation, indicating that its specific phosphorylation is necessary for this process.

SIGNOR-182858

O14965

Q5FBB7

1

phosphorylation

up-regulates activity

0.2

Loss of INCENP/Aurora B in Mitosis Correlates with Delocalization of MEI-S332|MEI-S332 Is Phosphorylated by Aurora B In Vitro|Of these, MEI-S332S124,125,126A was a poor substrate for Aurora B kinase in vitro

SIGNOR-252046

O76064

Q9H0D6

1

ubiquitination

up-regulates activity

0.2

Mechanistically, RNF8 interacts with XRN2, which is crucial for transcription termination and R-loop resolution. We report that RNF8 ubiquitylates XRN2 to facilitate its recruitment to R-loop-prone genomic loci and that RNF8 deficiency in BRCA1-mutant breast cancer cells decreases XRN2 occupancy at R-loop-prone sites, thereby promoting R-loop accumulation, transcription-replication collisions, excessive genomic instability, and cancer cell death.

SIGNOR-277195

Q9P0J1

Q15797

1

dephosphorylation

down-regulates

0.243

We show that the mammalian pdps are important in dephosphorylation of bmp-activated smad1 but not tgf-beta-activated smad2 or smad3. Thus, pdps specifically inactivate smads in the bmp/dpp pathway. [...] These observations suggest that pdp1 and pdp2 are important for dephosphorylation of smad1.

SIGNOR-144876

Q13315

Q9H3D4

1

phosphorylation

down-regulates

0.403

Atm kinase is a master switch for the delta np63 alpha phosphorylation/degradation in human head and neck squamous cell carcinoma cells upon dna damage. We previously found that the pro-apoptotic dna damaging agent, cisplatin, mediated the proteasome-dependent degradation of delta np63 alpha associated with its increased phosphorylated status. We found that delta np63 alpha is phosphorylated in the time-dependent fashion at the following positions: s385, t397 and s466, which were surrounded by recognition motifs for atm, cdk2 and p70s6k kinases, respectively

SIGNOR-180747

Q92598

P68400

0

phosphorylation

down-regulates activity

0.329

Protein kinase CK2 phosphorylates Hsp105 alpha at Ser509 and modulates its function. | the phosphorylation of Hsp105 alpha at Ser(509) abolished the inhibitory activity of Hsp105 alpha in vitro.

SIGNOR-250901

P35580

Q14814

0

transcriptional regulation

up-regulates quantity by expression

0.322

Myocyte enhancer factor-2 and serum response factor binding elements regulate fast Myosin heavy chain transcription in vivo. We show that the upstream promoter region of the gene most abundantly expressed in mouse skeletal muscles, IIb MyHC, retains binding activity and transcriptional activation for three positive transcription factors, the serum response factor, Oct-1, and myocyte enhancer factor-2, whereas the other two genes (IIa and IId/x) have nucleotide substitutions in these sites that reduce binding and transcriptional activation

SIGNOR-238766

P29590

P06493

0

phosphorylation

down-regulates

0.345

Here, we show that klhl20, a cullin3 (cul3) substrate adaptor induced by hif-1, coordinates with the actions of cdk1/2 and pin1 to mediate hypoxia-induced pml proteasomal degradation.

SIGNOR-176033

Q13555

O43318

1

phosphorylation

up-regulates

0.2

Camkii interacts with and phosphorylates tak1.

SIGNOR-96422

Q7Z4H7

Q8NHV4

2

binding

up-regulates activity

0.813

FAM29A recruits NEDD1 to spindle MTs. Ectopically expressed NEDD1 and FAM29A interact with each other.

SIGNOR-261421

Q14980

P68366

2

binding

up-regulates

0.514

Direct binding of numa to tubulin is mediated by a novel sequence motif in the tail domain that bundles and stabilizes microtubules.

SIGNOR-116788

O75531

Q8IV63

0

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

P63000

Q13009

2

binding

up-regulates

0.75

Lpa-induced rac activation requires tiam1

SIGNOR-94691

P63000

P52757

0

gtpase-activating protein

down-regulates activity

0.64

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-260500

O43379

Q9Y3I1

0

ubiquitination

down-regulates quantity by destabilization

0.2

WDR62 is also negatively regulated by T1053 phosphorylation, leading to the recruitment of F-box and WD repeat domain-containing protein 7 (FBW7) and proteasomal degradation. |JNK1 can induce the phosphorylation of WDR62 T1053

SIGNOR-271711

P36873

P36897

1

dephosphorylation

down-regulates

0.469

We found smad7 interacts with growth arrest and dna damage protein, gadd34, a regulatory subunit of the protein phosphatase 1 (pp1) holoenzyme, which subsequently recruits catalytic subunit of pp1 (pp1c) to dephosphorylate t?RI.

SIGNOR-121277

Q96FJ2

Q9C0C7

2

binding

down-regulates

0.463

The beclin 1 vps34 complex is tethered to the cytoskeleton through an interaction between the beclin 1 interacting protein ambra1 and dynein light chains 1/2

SIGNOR-168289

Q15418

Q9HC62

1

phosphorylation

down-regulates activity

0.2

Here, we determined that d-flow activated the serine/threonine kinase p90RSK, which subsequently phosphorylated threonine 368 (T368) of SENP2. T368 phosphorylation promoted nuclear export of SENP2, leading to downregulation of eNOS expression and upregulation of proinflammatory adhesion molecule expression and apoptosis.

SIGNOR-273839

Q13131

O15360

1

phosphorylation

up-regulates activity

0.332

FANCA was phosphorylated by AMPK at S347 and phosphorylation increased with MMC treatment. MMC-induced FANCD2 monoubiquitination and nuclear foci formation were compromised in a U2OS cell line that stably overexpressed the S347A mutant form of FANCA compared to wild-type FANCA-overexpressing cells, indicating a requirement for FANCA phosphorylation at S347 for proper activation of the FA/BRCA pathway.

SIGNOR-277264

P17844

O75925

0

sumoylation

up-regulates

0.546

We demonstrate that the sumo e3 ligase pias1 interacts with p68 and enhances its sumo modification in vivo / sumo modification enhances p68 transcriptional repression activity and inhibits the ability of p68 to function as a coactivator of p53.

SIGNOR-153719

Q9NQU5

P52564

0

phosphorylation

up-regulates

0.2

Moreover, pak6 was directly activated by mkk6, and mutation of tyrosine 566 in a consensus mkk6 site (threonine-proline-tyrosine, tpy) in the activation loop of the pak6 kinase domain prevented activation by mkk6.

SIGNOR-130975

P53778

Q13424

1

phosphorylation

up-regulates

0.668

Sapk3 phosphorylates alpha1-syntrophin at serine residues 193 and 201 in vitro and phosphorylation is dependent on binding to the pdz domain of alpha1-syntrophin. The finding that sapk3 co-localizes with _1-syntrophin in skeletal muscle, that it binds to the pdz domain of _1-syntrophin, and that phosphorylation of _1-syntrophin depends on this interaction identifies a novel mechanism for targeting a protein kinase to its substrates.

SIGNOR-67061

Q12852

O14950

1

phosphorylation

up-regulates

0.2

Zip kinase (hzipk) phosphorylated the regulatory light chain of myosin ii (mrlc) at both ser19 and thr18 in vitro. In this study, we demonstrate that hzipk also induces the diphosphorylation of mrlc in nonmuscle cells.

SIGNOR-113664

Q96LB1

O00230

2

binding

up-regulates

0.511

The mrgx2 receptor has been shown to be activated by the peptides cortistatin and proadrenomedullin n-terminal peptides (pamp)

SIGNOR-139855

Q05655

P08913

1

phosphorylation

up-regulates activity

0.533

Taken together, these results indicate that S232 acts as a selective, PKC-sensitive, modulator of effector coupling of the alpha(2A)AR to inositol phosphate stimulation. This represents one mechanism by which cells route stimuli directed to multifunctional receptors to selected effectors so as to attain finely targeted signaling.

SIGNOR-249126

Q16539

Q9Y6Q9

1

phosphorylation

up-regulates activity

0.526

P38 MAPK and JNK can phosphorylate multiple sites on SRC-3, including S505, S543, S860, and S867. Our results suggest that several kinases are important for phosphorylating SRC-3 and enhancing its interaction with DNA-dependent transcription factors and other coactivators.

SIGNOR-250103

P00533

Q9NY28

0

glycosylation

down-regulates activity

0.2

Interestingly, the O-GalNAcylation of EGFR, which is the key factor related to the metastasis cascade, was impacted by GALNT8. Furthermore, our results suggested that the GALNT8-mediated O-GalNAcylation led to the suppression of the EGFR signaling pathway and metastatic potential in breast cancer cells.

SIGNOR-269679

P31749

P15976

1

phosphorylation

up-regulates

0.514

We found that akt directly phosphorylates the transcription factor gata-1 at serine 310 and that this site-specific phosphorylation is required for the transcriptional activation of the timp-1 promoter.

SIGNOR-139782

P04629

P00519

2

binding

up-regulates

0.536

Autophosphorylated trka binds directly to plc?, Abl, and shc.

SIGNOR-75402

O14525

O75129

2

binding

down-regulates quantity

0.2

Biochemical and flow cytometry experiments show that ASTN2 forms a complex with ASTN1 and regulates surface expression of ASTN1. Coexpression with ASTN2 reduces the cell surface localization of ASTN1.

SIGNOR-269813

Q96M94

Q99708

2

binding

down-regulates quantity by destabilization

0.474

Here, we identify the Cullin3 E3 ligase substrate adaptor Kelch-like protein 15 (KLHL15) as a new interaction partner of CtIP and show that KLHL15 promotes CtIP protein turnover via the ubiquitin-proteasome pathway.

SIGNOR-272410

P31749

P07550

1

phosphorylation

down-regulates

0.354

Akt mediates sequestration of the beta(2)-adrenergic receptor in response to insulin. Phosphorylation studies of the c-terminal cytoplasmic domain of the beta(2)-adrenergic receptor by akt in vitro identified ser(345) and ser(346) within a consensus motif for akt phosphorylation.

SIGNOR-252470

P58753

Q99836

2

binding

up-regulates activity

0.635

Here we describe a protein, Mal (MyD88-adapter-like), which joins MyD88 as a cytoplasmic TlR-domain-containing protein in the human genome. Mal activates NF-_B, Jun amino-terminal kinase and extracellular signal-regulated kinase-1 and -2.

SIGNOR-252063

Q9Y4P1

P60520

1

cleavage

up-regulates activity

0.844

In mammals, at least three atg8 homologs, lc3, gabarap, and gate-16, have been identified (fig. 1a), all of which have structural ubiquitin folds (1416). In vivo and in vitro biochemical analyses have shown that human atg4b is an authentic cysteine protease essential for cleavage of the c terminus of each atg8 homolog to expose the c-terminal gly

SIGNOR-141932

Q9HC78

P25963

1

transcriptional regulation

down-regulates quantity by repression

0.259

ChIP and next generation high-throughput DNA sequencing assay showed that ZBTB20 specifically bound to IκBα gene promoter (+1 to +60 region) after TLR activation. ZBTB20 could inhibit IκBα gene transcription, govern IκBα protein expression, and then promote NF-κB activation. Therefore, transcriptional repressor ZBTB20 is needed to promote full activation of TLR signaling and TLR-triggered innate immune response by selectively suppressing the suppressor IκBα gene transcription.

SIGNOR-266868

Q06710

P84022

2

binding

down-regulates activity

0.366

DNA Binding Activity of Pax8 to the NIS Promoter Is Reduced by Smad3. TGF-Î² decreases Pax8 DNA binding to the NIS promoter and also found a physical interaction between Pax8 and Smad3.

SIGNOR-251992

Q14493

P04908

1

translation regulation

up-regulates quantity by expression

0.2

Synthesis of mature histone mRNA requires only a single processing reaction: an endonucleolytic cleavage between a conserved stem-loop and a purine-rich downstream element to form the 3' end. The stem-loop binding protein (SLBP) is required for processing, and following processing, histone mRNA is transported to the cytoplasm, where SLBP participates in translation of the histone mRNA|We used radiolabeled probes generated by PCR targeting the open reading frame (ORF) to detect histones H2A, H2B, H3, H4, and H1 and used 7SK snRNA as a loading control (Fig. 2A). The abundance of histone H2A, H2B, H3, and H4 mRNAs is reduced to 37% to 70% of control levels in the SLBP knockdown cells when compared to the C2 control.

SIGNOR-265397

P50750

P10412

1

phosphorylation

down-regulates activity

0.2

These data provide further evidence that CDK9 phosphorylates H1.4-S187, and that the level of pS187-H1.4 at genes is directly related to the extent of co-enrichment of CDK9.|that enrichment of pS187-H1.4 at genes is positively related to their transcription.

SIGNOR-279691

P15382

P17252

0

phosphorylation

down-regulates activity

0.307

Inhibition of the current was not seen in channels in which Ser103 was replaced by Ala, although other properties of the current were unchanged. These results indicate that inhibition of the potassium current results from direct phosphorylation of the channel subunit protein at Ser103.

SIGNOR-248852

P62837

Q9C026

2

binding

up-regulates activity

0.425

Collectively, these results indicated that TRIM9 is an E3 ligase for its self-ubiquitination and that the ubiquitination of TRIM9 likely serves as a signal for proteasomal degradation. As shown in Fig. 1A, TRIM9 was ubiquitinated by itself when incubated with UbcH5b. In contrast, ubiquitination was observed when incubated with other E2 enzymes. These results suggest that TRIM9 cooperates with UbcH5b for its self-ubiquitination. N

SIGNOR-271420

P12814

Q9BYB0

0

relocalization

up-regulates activity

0.2

SHANK proteins are ‘master’ scaffolding proteins that tether and organize intermediate scaffolding proteins. They are located at excitatory synapses, where they are crucial for proper synaptic development and function. SAPAP proteins subsequently bind to the PDZ domain of members of the SHANK protein family. SHANK proteins then bind to the actin cytoskeleton and to Homer protein, which in turn interacts with mGluRs. Through these extended links, PSD95, SAPAP, SHANK and Homer proteins form a quaternary complex that brings together mGluR and NMDAR complexes in the PSD (FIG. 3).

SIGNOR-264585

Q05513

Q7KZI7

1

phosphorylation

down-regulates

0.266

Hpar-1b is phosphorylated by apkc on threonine 595 importantly, phosphorylation of hpar-1b on t595 negatively regulates the kinase activity and plasma membrane localization of hpar-1b in vivo.

SIGNOR-124217

P27361

Q99956

2

binding

down-regulates

0.704

Here we demonstrate that inactivation of both erk1/2 and p38_ by dusp9/mkp-4 is mediated by a conserved arginine-rich kinase interaction motif located within the amino-terminal non-catalytic domain of the protein.

SIGNOR-176589

Q14353

P51608

0

post transcriptional regulation

up-regulates quantity by expression

0.279

MeCP2 binds to the promoter region of six target genes. ChIP with anti-MeCP2 antibody shows that MeCP2 binds to the promoter regions of activated targets Sst, Oprk1, Gamt, and Gprin1, and repressed targets Mef2c and A2bp1.

SIGNOR-264678

P46940

P17252

0

phosphorylation

up-regulates

0.258

Using a mass spectrometry-based assay, we show that egf induces phosphorylation of iqgap1 ser(1443), a residue known to be phosphorylated by pkcthe nonphosphorylatable iqgap1 s1441a/s1443a had no effect. In contrast, the s1441e/s1443d mutation markedly enhanced the ability of iqgap1 to induce neurite outgrowth.

SIGNOR-128714

P48742

P32243

2

binding

up-regulates activity

0.435

Here we show that OTX2 directly associates with LIM1 and HNF-3beta. The luciferase assay with the P3C sequence, a specific DNA binding sequence for paired-class homeobox genes, has demonstrated that LIM1 enhances, but HNF-3beta represses, OTX2-directed gene expression.

SIGNOR-221161

Q9P227

P61586

1

gtpase-activating protein

down-regulates activity

0.548

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-260479

P19086

P51582

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-257122

O94989

P61586

1

guanine nucleotide exchange factor

up-regulates activity

0.571

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-260540

P78362

P23443

0

phosphorylation

up-regulates activity

0.355

Altogether, these results identify S6K1-phosphorylated SRPK2 as an essential mediator of IGF1-stimulated SG formation in hPDAC cells.|The nodes of the core SG network are known to contribute to SG formation to varying degrees and it is possible that S6K1-stimulated SRPK2 may impact their contribution; this is consistent with the predicted model whereby SG assembly is subject to regulation by positive and negative cooperativity of extrinsic factors with the core network interactions (14).

SIGNOR-280121