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
Q96EP1	Q96EB6	1	ubiquitination	down-regulates quantity	0.372	CHFR binds to and ubiquitylates SIRT1, leading to its proteasomal degradation.\|CHFR ubiquitylates and promotes the proteasomal degradation of SIRT1.	SIGNOR-278691
P05067	Q8IV08	2	binding	up-regulates quantity	0.373	Furthermore, PLD3 can be co-immunoprecipitated with APP in cultured cells (Extended Data Figure 4). Together, these studies demonstrate that PLD3 plays a role in APP processing. Over-expression of PLD3 leads to a significant decrease in intracellular APP and extracellular Aβ42 and Aβ40, while knock-down of PLD3 leads to a significant increase in extracellular Aβ42 and Aβ40. Together, our genetic and functional data indicate that carriers of PLD3 coding variants have a two-fold increased risk for LOAD and that PLD3 influences APP processing.	SIGNOR-261200
P06493	P18754	1	phosphorylation	up-regulates activity	0.504	We show here that Cdc2 kinase phosphorylates the serines located in or near the nuclear localization signal (NLS) of hum an RCC1, the nucleotide exchange factor for Ran. This phosphorylation is necessary for RCC1 to generate RanGTP on mitotic chromosomes in mammalian cells, which in turn is required for spindle assembly and chromosome segregation. However, when both S2 and S11 were simultaneously mutated to As, the resulting 6His-RCC1S2,11A failed to be phosphorylated, whereas all of the other double mutants were phosphorylated (Fig. 1C). As expected, mutating all four sites to As (the 6His-RCC1S2,11,387A-T274A) also blocked phosphorylation (Fig. 1C).	SIGNOR-262704
Q9H2X6	P54646	0	phosphorylation	down-regulates activity	0.2	AMPKalpha2-mediated inhibition of WIP1 phosphorylation by HIPK2\|Site-directed mutagenesis of Thr112 and Ser114 in the N terminus, and Thr1107 in the C terminus markedly reduced HIPK2 phosphorylation by AMPKalpha2 in vitro	SIGNOR-275485
Q16236	Q9NP59	1	transcriptional regulation	up-regulates quantity by expression	0.257	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. SLC40A1 is a target gene of NFE2L2, with a putative ARE identified approximately -7 kb upstream of the SLC40A1 core promoter.	SIGNOR-279863
O14965	O94889	2	binding	up-regulates activity	0.368	We identify Aurora-A as a KLHL18-interacting partner. Overexpression of KLHL18 and CUL3 promotes Aurora-A ubiquitylation in vivo, and the CUL3-KLHL18-ROC1 ligase ubiquitylates Aurora-A in vitro. Our study reveals that the CUL3-KLHL18 ligase is required for timely entry into mitosis, as well as for the activation of Aurora-A at centrosomes.We also noticed that overexpression of both CUL3 and KLHL18 stimulated mono-ubiquitylation of Aurora-A as well (Fig. 8A,B).	SIGNOR-272021
O14522	P49023	1	dephosphorylation	down-regulates activity	0.462	To this end, using a phospho-proteomics approach, we identified and validated paxillin and STAT3 as the substrates of PTPRT [15, 16]\|the PTPRT target site on paxillin is a previously uncharacterized tyrosine-88 residue (paxillin Y88)\|In this study, we also show how pY88 paxillin transduces a signal to activate Akt	SIGNOR-263978
Q09472	Q00987	2	binding	down-regulates	0.687	Mdm2, a negative-feedback regulator of p53, inhibited p300-mediated p53 acetylation by complexing with these two proteins.	SIGNOR-84077
P28715	P54727	2	binding	up-regulates activity	0.639	GG-NER is initiated by the GG-NER specific factor XPC-RAD23B, in some cases with the help of UV-DDB (UV-damaged DNA-binding protein). TC-NER is initiated by RNA polymerase stalled at a lesion with the help of TC-NER specific factors CSA, CSB, and XAB2. Both pathways require the core NER factors to complete the excision process\|The core NER dual incision reaction has been reconstituted in vitro with purified factors using XPC-RAD23B, TFIIH, XPA, RPA, XPG, and ERCC1-XPF (Aboussekhra et al. 1995; Mu et al. 1995; Araujo et al. 2000).\|The core NER dual incision reaction has been reconstituted in vitro with purified factors using XPC-RAD23B, TFIIH, XPA, RPA, XPG, and ERCC1-XPF (Aboussekhra et al. 1995; Mu et al. 1995; Araujo et al. 2000). Functional studies revealed that XPC-RAD23B is the initial damage recognition factor in this system, as the presence of XPC-RAD23B is required for assembly of the other core NER factors and progression through the NER pathway both in vitro and in vivo	SIGNOR-275702
P35790	Q8TB45	1	phosphorylation	down-regulates quantity by destabilization	0.2	These data suggests that CKI overexpression may overcome a requirement for phosphorylation at the major mTOR sites in DEPTOR for formation of the degron and are consistent with our finding that CKI can phosphorylate S286 and S287 in DEPTOR in vitro in the absence of mTOR.	SIGNOR-279605
Q02156	Q16625	1	phosphorylation	up-regulates	0.2	Thr403, thr404, thr424 and thr438 in the occludin c-terminal domain are the predominant sites of pkc_-dependent phosphorylation . The present study demonstrates that pkc_ phosphorylates occludin on specific threonine residues and promotes assembly of epithelial tight junctions.	SIGNOR-173643
O43542	Q06609	2	binding	up-regulates quantity by stabilization	0.748	XRCC3 activation is essential for the recruitment of RAD51 to the sites of DNA lesions. It is likely that BRCA2 may directly participate in RAD51 recruitment and XRCC3 may stabilize the RAD51 filament which is in part mediated by phosphorylation.	SIGNOR-262667
Q03468	Q13216	0	ubiquitination	down-regulates quantity by destabilization	0.582	We have previously shown that CSA is a subunit of an E3 ubiquitin ligase complex. Here we demonstrate that CSB is a substrate of this ligase: Following UV irradiation, CSB is degraded at a late stage of the repair process in a proteasome- and CSA-dependent manner.	SIGNOR-271406
P68400	P49736	1	phosphorylation	up-regulates	0.259	In this work, by in vitro kinase reactions and mass spectrometry analysis of the products, we have mapped phosphorylation sites in the n terminus of mcm2 by cdc7, cdk2, cdk1, and ck2	SIGNOR-144004
Q96RR4	Q14012	1	phosphorylation	up-regulates activity	0.413	Human calcium-calmodulin dependent protein kinase I: cDNA cloning, domain structure and activation by phosphorylation at threonine-177 by calcium-calmodulin dependent protein kinase I kinase.	SIGNOR-250716
P83916	P68400	0	phosphorylation	down-regulates	0.303	Two recent papers suggest that hp1 recruitment to damage sites, rather than its rapid mobilization, is the predominant behaviour exhibited by this protein. Our findings reconcile recent findings in a new model, wherein rapid hp1beta mobilization from dsbs is mediated by its phosphorylation on thr51 by ck2	SIGNOR-187450
P56211	Q66LE6	2	binding	down-regulates activity	0.694	We identified cyclic adenosine monophosphateregulated phosphoprotein 19 (Arpp19) and -Endosulfine as two substrates of Gwl that, when phosphorylated by this kinase, associate with and inhibit PP2A, thus promoting mitotic entry.	SIGNOR-243731
O15273	Q9UKT6	0	ubiquitination	down-regulates quantity by destabilization	0.2	FBXL21 is a clock-controlled E3 ligase modulating circadian periodicity via subcellular-specific CRYPTOCHROME degradation. How FBXL21 regulates tissue-specific circadian physiology and what mechanism operates upstream is poorly understood. Here we report the sarcomere component TCAP as a cytoplasmic substrate of FBXL21.	SIGNOR-264853
Q13873	Q9HCE7	0	ubiquitination	down-regulates	0.56	Smurf1 and smurf2 are e3 ubiquitin ligases known to suppress tgf-beta signaling through degradation of smads and receptors for tgf-beta and bmps.	SIGNOR-153402
O00238	Q13253	2	binding	down-regulates activity	0.599	Noggin binds the domain that is re-quired for bmp-7 to interact with bmp type i and type ii receptors.Noggin Inhibits bmp by blocking the molecular interfaces of the binding epitopes for both type i and type ii receptors (pmid 12478285)	SIGNOR-192802
Q9Y222	Q9NZW4	1	transcriptional regulation	up-regulates quantity by expression	0.2	In addition, our in vitro analyses showed that DMP1 and its 57-kDa C-terminal fragment significantly up-regulated the Dspp promoter activities in a mesenchymal cell line.	SIGNOR-271685
Q15119	P08559	1	phosphorylation	down-regulates	0.679	Mammalian pyruvate dehydrogenase (?2_2) (e1) is regulated by phosphorylation-dephosphorylation, catalyzed by the e1-kinase and the phospho-e1-phosphatase.	SIGNOR-33141
P54762	P40763	1	phosphorylation	up-regulates activity	0.353	By integrating mouse in vivo and in vitro models with human iPSC derived astrocytes, we provide direct evidence that EphB1 can induce early astrocytic STAT3 activation via ephrin-B1 signalling.\|We confirmed that EphB1 activates astrocytes by inducing ephrin-B1 dependent STAT3 phosphorylation.	SIGNOR-279709
O95166	Q9Y4P1	0	cleavage	up-regulates activity	0.861	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-141929
P33151	P23467	0	dephosphorylation	up-regulates activity	0.581	Because we had shown previously that VE-PTP supports VE-cadherin function when exogenously expressed in transfected cells, we expected it to be expressed at endothelial cell contacts.\|Indeed, tyrosine phosphorylation of VE-cadherin is reduced by VE-PTP in COS-7 and CHO cells.	SIGNOR-277131
Q13464	P14136	1	phosphorylation	down-regulates activity	0.312	We report here that aurora-b phosphorylates gfap and desmin in vitro, and this phosphorylation leads to a reduction in filament forming ability. The sites phosphorylated by aurora-b;thr-7/ser-13/ser-38 of gfap, and thr-16 of desmin are common with those related to rho-associated kinase (rho-kinase), which has been reported to phosphorylate gfap and desmin at cleavage furrow during cytokinesis. We identified ser-59 of desmin to be a specific site phosphorylated by aurora-b in vitro.	SIGNOR-100192
P15169	P69905	1	cleavage	down-regulates activity	0.2	Both human plasma carboxypeptidase N (CPN) and membrane-bound carboxypeptidase M (CPM) released the C-terminal arginine (alpha-Arg141) of the alpha chain of human adult hemoglobin. Thus, the hydrolysis of hemoglobin by CPM and CPN demonstrated the contribution of the alpha-Arg141 residue to sustaining the tetrameric structure of hemoglobin and its normal oxygen affinity and vasoactivity.	SIGNOR-256508
Q99741	P53350	0	phosphorylation	up-regulates	0.566	Binding between cdc6 and plk1 occurs through the polo-box domain of plk1, and cdc6 is phosphorylated by plk1 on t37. These results suggest that plk1-mediated phosphorylation of cdc6 promotes the interaction of cdc6 and cdk1, leading to the attenuation of cdk1 activity, release of separase, and subsequent anaphase progression.	SIGNOR-169184
P15018	P40189	2	binding	up-regulates	0.79	Stimulation of cells with the interleukin-6 family of cytokines triggers homo- or hetero-dimerization of gp130. The dimerization of gp130 leads to activation of associated cytoplasmic tyrosine kinases and subsequent modification of transcription factors.Some Of these biological activities of il-6 are also often exerted by other cytokines, i.e. Il-11, lif, osm, cntf, and ct-2	SIGNOR-48108
Q13131	Q06210	1	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
Q9P286	P15976	1	phosphorylation	up-regulates activity	0.2	In addition, we defined GATA1 Ser161, Ser187 were the main phosphorylation sites by PAK5.	SIGNOR-278297
P01189-PRO_0000024969	P41968	2	binding	up-regulates activity	0.2	The melanocortin (MC) receptor family consists of five Gs-coupled receptors that control various physiological functions in response to four distinct agonists, adrenocorticotropic hormone (ACTH, also known as corticotrophin) and alpha, beta, and gamma melanocyte-stimulating hormone (MSH), which are derived from the proopiomelanocortin precursor protein, and two inverse agonists, agouti and agouti-related proteins	SIGNOR-268706
P01008	P00748	1	cleavage	down-regulates activity	0.6	Antithrombin (AT), a member of the serine protease inhibitor (SERPIN) superfamily, is a major circulating inhibitor of blood coagulation proteases such as factor (F) IIa (known as thrombin), FXa and, to a lesser extent, FIXa, FXIa and FXIIa. SERPINC1, which encodes AT in humans, is located on chromosome 1q25.1	SIGNOR-264139
P08754	P08173	2	binding	up-regulates activity	0.403	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-256829
P67775	Q12800	1	dephosphorylation	up-regulates	0.2	We previously established that phosphorylation of lsf in early g1 at ser-291 and ser-309 inhibits its transcriptional activity and that dephosphorylation later in g1 is required for its reactivation. This predominant cis conformation would also limit dephosphorylation of ser-291 and ser-309 by phosphatases such as pp2a	SIGNOR-167385
P21453	Q9C0B5	0	palmitoylation	up-regulates activity	0.2	We propose that DHHC5-mediated palmitoylation of S1P1R determines Gi coupling and its signalling in a spatio/temporal manner.	SIGNOR-261140
P10911	P63000	1	guanine nucleotide exchange factor	up-regulates activity	0.665	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-260557
Q71F23	P53350	0	phosphorylation	down-regulates	0.741	S77 and t78 of pbip1 are important for plk1-dependent pbip1 phosphorylation and degradation. Here, we demonstrate that a pbd-binding protein, pbip1, is crucial for recruiting plk1 to the interphase and mitotic kinetochores. Unprecedentedly, plk1 phosphorylated pbip1 at t78. Later in mitosis, plk1 also induced pbip1 degradation in a t78-dependent manner, thereby enabling itself to interact with other components critical for proper kinetochore functions	SIGNOR-150457
P63092	P43220	2	binding	up-regulates activity	0.481	The GPCRs are allocated in five families where the GLP-1R and GIPR are found within the secretin family, also classified as class B [31,32]. Upon stimulation by an extracellular stimuli (ligand), GPCRs undergo conformational changes, and triggers downstream intracellular signals by coupling with G proteins (or other intracellular proteins such as arrestins), causing a wide range of both physiological and pathological processes.To stimulate insulin secretion, and in the presence of elevated blood glucose concentrations, GLP-1R activation in pancreatic beta cells promote recruitment and activation of Gαs protein leading to adenylate cyclase-mediated cAMP production, elevation of Ca2+, and ERK1/2 phosphorylation (Fig. 3)	SIGNOR-278137
Q15154	Q86YT6	0	ubiquitination	down-regulates	0.371	We demonstrate that the E3 ubiquitin ligase MIB1 is a new component of centriolar satellites, which interacts with and ubiquitylates AZI1 and PCM1 and suppresses primary cilium formation.	SIGNOR-272878
P02818	P09668	0	cleavage	down-regulates quantity by destabilization	0.283	This study has been undertaken to compare the degradation of BGP by the cysteine proteinases cathepsins L, B, H, S, and the aspartic proteinase cathepsin D. Cathepsins B, L, H, and S readily cleave BGP at the G7-A8 bond; cathepsin L also cleaves at R43-R44; cathepsin B also cleaves at R44-F45; and cathepsin D cleaves only at A41-Y42.	SIGNOR-256325
O75791	Q92918	0	phosphorylation	down-regulates activity	0.834	Serine/threonine phosphorylation of the T cell adaptor proteins SLP76 and GADS by HPK1 induces their release from signaling microclusters and subsequent termination of the T cell response.	SIGNOR-279421
O75364	Q9H334	0	transcriptional regulation	up-regulates quantity by expression	0.292	We identified FoxP1 as a novel marker for midbrain dopamine neurons. Enforced expression of FoxP1 in embryonic stem cells actuates the expression of Pitx3, a homeobox protein that is exclusively expressed in midbrain dopaminergic neurons and is required for their differentiation and survival during development and from embryonic stem cells in vitro. We show that FoxP1 can be recruited to the Pitx3 locus in embryonic stem cells and regulate Pitx3 promoter activity in a dual-luciferase assay.	SIGNOR-269049
P24941	Q8TDN4	2	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
P50750	P01106	1	phosphorylation	down-regulates activity	0.54	CDK9 promotes phosphorylation of MYC on Ser 62 .	SIGNOR-279024
O43150	P84085	1	gtpase-activating protein	up-regulates activity	0.497	Pap is a multidomain protein composed of an N-terminal alpha-helical region with a coiled-coil motif, followed by a pleckstrin homology domain, an Arf-GAP domain, an ankyrin homology region, a proline-rich region, and a C-terminal SH3 domain. In addition, in vitro recombinant Pap exhibits strong GTPase-activating protein (GAP) activity towards the small GTPases Arf1 and Arf5 and weak activity towards Arf6. Pap protein exhibits Arf GAP activity in vitro.	SIGNOR-269707
Q13535	P30304	1	phosphorylation	down-regulates activity	0.643	ATR and CHK1 mediated loss of CDC25A activity suspends CDKs, such as CDK2, in an inactive phosphorylated state, blocking initiation of DNA replication origins.\|In the presence of replication stalling, activated CHK1 and ATR phosphorylates CDC25A and promotes its degradation.	SIGNOR-280183
P61006	Q92834	0	guanine nucleotide exchange factor	up-regulates activity	0.427	PGR interacts with the small GTPase RAB8A, which participates in cilia biogenesis and maintenance. We show that RPGR primarily associates with the GDP-bound form of RAB8A and stimulates GDP/GTP nucleotide exchange. RPGR functions as a GEF for RAB8A and RPGR–RAB8A association may facilitate ciliary trafficking.	SIGNOR-253030
Q9NS75	O95837	2	binding	up-regulates activity	0.385	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-257140
P46937	P49336	0	phosphorylation	up-regulates activity	0.321	CDK8 phosphorylates YAP and promotes its activation. Of interest, mutating four amino acid positions (T119, S128, S289, and S367) to alanines (YAP-4A) completely blocked phosphorylation (Fig. 6J), suggesting that CDK8 phosphorylates these sites in YAP in vitro.	SIGNOR-277651
Q14258	P11308	1	ubiquitination	down-regulates quantity	0.301	We demonstrate that TRIM25 polyubiquitinates ERG in vitro and that inactivation of TRIM25 resulted in reduced polyubiquitination and stabilization of ERG.\|Our previous discovery of USP9X as an ERG stabilizing deubiquitinase suggests that reduction of ERG protein levels by TRIM25 mediated proteasomal degradation is prevented by expression of USP9X in fusion positive prostate cancer cells.\|Using several biochemical assays we show that TRIM25 mediates the polyubiquitination of full-length ERG as well as N-terminally truncated ERG.	SIGNOR-278732
P23759	O14686	2	binding	up-regulates	0.304	Carm1 specifically methylates multiple arginines in the n-terminus of pax7. Methylated pax7 directly binds the c-terminal cleavage forms of the trithorax proteins mll1/2 resulting in the recruitment of the ash2l:mll1/2:wdr5:rbbp5 histone h3k4 methyltransferase complex to regulatory enhancers and the proximal promoter of myf5.	SIGNOR-198629
Q8TBZ2	P22681	0	monoubiquitination	up-regulates activity	0.298	We moreover found that AMAP1 is monoubiquitinated, rather than polyubiquitinated, by virtue of Cbl and provide evidence that the ability of AMAP1 to be monoubiquitinated is important for its involvement in invasion.	SIGNOR-272627
O60674	P08575	0	dephosphorylation	down-regulates activity	0.472	Src homology-2 (SH2) containing tyrosine phosphatase and CD45 tyrosine phosphatase play a major role in modulating JAK-STAT pathway. SH2 containing tyrosine phosphatases include SHP1 and SHP2 (shatterproof 1 & 2). Their SH2 domains allow attachment to the phospho-tyrosine residues present on activated receptors, JAKs or STAT proteins, leading to dephosphorylation of the substrates.	SIGNOR-255679
Q9NYA4	P84022	1	dephosphorylation	down-regulates	0.517	Here we demonstrate that myotubularin-related protein 4	SIGNOR-163034
Q13237	P29350	1	phosphorylation	up-regulates activity	0.2	PKGII directly phosphorylated and stimulated SHP-1 activity	SIGNOR-276288
P19174	Q15139	0	phosphorylation	down-regulates activity	0.404	Thus, phosphorylation of PLC-gamma 1 by PKC or PKA at serine 1248 may modulate the interaction of PLC-gamma 1 with the protein tyrosine kinase or the protein tyrosine phosphatase; this altered interaction may, at least in part, be responsible for the decreased tyrosine phosphorylation of PLC-gamma 1 seen in PMA- and forskolin-treated Jurkat cells.	SIGNOR-248846
P69905	P00738	2	binding	down-regulates quantity	0.738	Haptoglobin forms a complex of extremely high affinity with Hb via a well-characterized globin site. Our results show that upon Hb-haptoglobin binding, the globin radical, loses its ability to be terminated by forming globin dimers.	SIGNOR-251816
P61586	B2RTY4	0	gtpase-activating protein	down-regulates activity	0.565	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-260508
Q16584	Q7Z6J0	2	binding	up-regulates	0.502	Taken together, these findings support a model in which apoptotic stimuli or posh overexpression induce direct association between posh and inactive mlks.	SIGNOR-97006
P68431	O60341	0	demethylation	up-regulates activity	0.2	Here, we provide evidence that LSD1 (KIAA0601), a nuclear homolog of amine oxidases, functions as a histone demethylase and transcriptional corepressor. LSD1 specifically demethylates histone H3 lysine 4, which is linked to active transcription.	SIGNOR-264507
P07225	P38435	0	carboxylation	up-regulates activity	0.613	Gamma-carboxylation is essential in the activation and proper functioning of multiple VK-dependent proteins (VKDP), the most well-known of which are involved in blood clotting, including coagulation factors (FII, FVII, FIX and FX) and natural anti-clotting agents (protein C, protein S (ProS; OMIM*176880) and protein Z	SIGNOR-265924
O43524	P31751	0	phosphorylation	down-regulates activity	0.751	Akt-dependent phosphorylation of foxo3a (thr32, ser253, and ser315 for human foxo3) enhances foxo3a/14-3-3 Interaction and promotes foxo3a nuclear export to the cytoplasm, resulting in the repression of foxo3a transcriptional function akt phosphorylates members of the foxo factors (forkhead family of transcription factors), leading to binding of 14-3-3 proteins and cytoplasmic localisation. In particular, akt phosphorylates foxo1 on thr24, ser256 and ser319. Foxo 3alfa and foxo4 are phosphorylated on equivalent sites.	SIGNOR-236671
P46734	P53778	1	phosphorylation	up-regulates	0.648	Mkk3, mkk4 and mkk6 all show a strong preference for phosphorylation of the tyrosine residue of the thr-gly-tyr motifs in their known substrates sapk2a/p38, sapk3/p38 gamma and sapk4/p38 delta. we therefore examined the phosphorylation of sapk2a/p38, sapk3/p38? And sapk4/p38? By mkk3, mkk4 and mkk6, which are all known to be capable of activating these enzymes in vitro.	SIGNOR-83718
Q9UQM7	Q00975	1	phosphorylation	down-regulates	0.317	Here, we report a direct modulation of ca(v)2.2 channel inactivation properties by 14-3-3, a family of signaling proteins involved in a wide range of biological processes.Wild-type gst fusion proteins containing the putative 14-3-3-binding motif (aa 2076__?2140) werein vitro phosphorylated at s2126 by either camkii or pka, as detected by thesequence- and phosphorylation-specific antibody, anti-ps2126 (middle panel). Phosphorylation of s2126 significantly increases its binding to recombinant 14-3-3?	SIGNOR-149684
O00141	P43003	1	phosphorylation	up-regulates activity	0.415	Site‐directed mutagenesis of the SGK1 phosphorylation sites in the Nedd4‐2 protein (S382A,S468ANedd4‐2) and in the EAAT1 protein (T482AEAAT1, T482DEAAT1) significantly blunts the effect of S422DSGK1. Introduction of a negative charge at the SGK phosphorylation site in the EAAT1 protein leads to a strong stimulation of the carrier, whereas replacement with alanine markedly decreases the EAAT1‐mediated current. These observations suggest that SGK1 exerts its effect not only by phosphorylation of Nedd4‐2 but also by phosphorylation of EAAT1.	SIGNOR-263075
Q13043	P22455	0	phosphorylation	down-regulates activity	0.2	FGFR4 phosphorylates MST1 to confer breast cancer cells resistance to MST1/2 dependent apoptosis.\|We provide evidence suggesting that by Y433-MST1 phosphorylation , FGFR4 inhibits MST1 / 2 activation .	SIGNOR-279714
Q9NR30	P05412	2	binding	up-regulates activity	0.455	C-Jun and RHII/Gu proteins interact in human cells at their endogenous level of expression. The helicase activity of RHII/Gu specifically facilitates c-Jun-mediated transcription.	SIGNOR-260977
P63096	Q9Y5X5	2	binding	up-regulates activity	0.25	Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. \| We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. \| The score associated to this interaction has a LogRAi ≥ -1.0.	SIGNOR-256709
Q9NWF9	O00206	1	ubiquitination	down-regulates quantity by destabilization	0.388	Here we describe how a RING finger protein, Triad3A, acts as an E3 ubiquitin-protein ligase and enhances ubiquitination and proteolytic degradation of some TLRs. Triad3A overexpression promoted substantial degradation of TLR4 and TLR9 with a concomitant decrease in signaling, but did not affect TLR2 expression or signaling.	SIGNOR-271504
P06730	P11940	2	binding	up-regulates activity	0.805	The binding of PABP to mRNA poly(A) tails is followed by interactions with eukaryotic initiation factor (eIF4G) and other translation factors, including eIF4E, to constitute a translation initiation complex, which mediates cellular mRNA circularization and enhances cap-dependent translation by facilitating ribosome recycling	SIGNOR-260968
P12821	P01019-PRO_0000032457	2	binding	up-regulates activity	0.2	Ang I is subsequently converted into the major RAS effector peptide Ang II or Ang (1–8), through activity of the zinc-dependent protease ACE, which hydrolyzes two amino acids from the carboxy terminus of Ang I	SIGNOR-260231
P00450	Q15465	2	binding	down-regulates	0.2	Binding of sonic hedgehog (shh) to patched (ptc) relieves the latter's tonic smoothened (smo), a receptor that spans the cell membrane seven times. Ptch exists in vertebrates as two isoforms, ptch1 and ptch2, which seem to be equivalent in terms of binding the three hh isoforms.	SIGNOR-132672
Q9Y618	Q04206	0	relocalization	down-regulates activity	0.404	Furthermore, overexpression of Flt3-ITD led to a partial relocalization of SMRT protein from the nucleus to the cytoplasm. This indicates that shuttling of p65 was necessary for Flt3-ITD-mediated SMRT nuclear export.	SIGNOR-261539
Q6KF10	P36894	2	binding	up-regulates	0.596	We found that transfection of small hairpin rna for bmprii and actriia in mc3t3 cells suppressed the signaling of gdf6, gdf7, and bmp10.	SIGNOR-139090
O14965	Q92974	1	phosphorylation	down-regulates activity	0.332	The mitotic kinases Aurora A/B and Cdk1/Cyclin B phosphorylate GEF-H1, thereby inhibiting GEF-H1 catalytic activity.	SIGNOR-276061
Q8N752	O75581	1	phosphorylation	up-regulates	0.254	Ck1 also phosphorylates lrp6 at the second ser residue in the pppspxs motif ck1_ in the lrp5/e-cadherin/p120-catenin complex temporally coincides with p120-catenin phosphorylation in ser268. moreover, and considering the close similarity between the catalytic domains of ck1_ and ck1_, it is possible that ck1_ is indeed responsible for the phosphorylation at ser1420 and ser1430 in lrp5/6 that negatively affects wnt signaling by still not defined mechanisms	SIGNOR-173853
O00763	Q96RU7	2	binding	down-regulates quantity by destabilization	0.258	TRB3 appears to inhibit ACC activity by functioning as an adaptor for COP1. Taken together, these results suggest that TRB3 may promote loss of fat by mediating the COP1-dependent ubiquitination and inactivation of ACC. Taking these results together, we propose that TRB3 may protect against diet-induced obesity by stimulating fatty acid oxidation in adipose during fasting through the COP1-mediated ubiquitination and degradation of ACC (Fig. 4D).	SIGNOR-271601
P35222	P17612	0	phosphorylation	up-regulates activity	0.478	Although pka did not affect the formation of a complex between glycogen synthase kinase 3beta (gsk-3beta), beta-catenin, and axin, phosphorylation of beta-catenin by pka inhibited ubiquitination of beta-catenin in intact cells and in vitro.	SIGNOR-140902
P17612	Q15052	1	phosphorylation	down-regulates activity	0.2	ARHGEF6 is a Rho guanine nucleotide exchange factor for Rac1 and constitutively bound to GIT1. NO and PGI2 activate PKG and PKA, respectively and both kinases phosphorylate ARHGEF6 on Ser-684 and possibly on Ser-640. Phosphorylation of ARHGEF6 results in the assembly of a GIT1-ARHGEF6–14-3-3 complex. These changes might contribute to PGI2- and NO-mediated Rac1 inhibition.	SIGNOR-272162
Q9NR96	Q9NWF9	0	ubiquitination	down-regulates quantity by destabilization	0.406	Here we describe how a RING finger protein, Triad3A, acts as an E3 ubiquitin-protein ligase and enhances ubiquitination and proteolytic degradation of some TLRs. Triad3A overexpression promoted substantial degradation of TLR4 and TLR9 with a concomitant decrease in signaling, but did not affect TLR2 expression or signaling.	SIGNOR-271505
Q00987	P62140	0	dephosphorylation	up-regulates quantity by stabilization	0.2	Three phosphorylation sites identified are Ser342, Ser367, and Ser403. In the present study, we identify protein phosphatase 1 (PP1) as a negative regulator in the p53 signaling pathway. PP1 directly interacts with Mdmx and specifically dephosphorylates Mdmx at Ser367. The dephosphorylation of Mdmx increases its stability and thereby inhibits p53 activity.	SIGNOR-248577
Q13309	P46527	1	ubiquitination	down-regulates	0.766	Up-regulation of skp2 by notch signaling enhances proteasome-mediated degradation of the ckis, p27 kip1 and p21 cip1, and causes premature entry into s phase. ;the recognition of p27 by skp2/cks1 of the scfskp2 complex is dictated by cycline/cdk2, providing a high affinity binding site and the phosphorylation of p27 at t187, serving here we provide evidence suggesting that both cdk2/e and phosphorylation of thr(187) on p27 are essential for the recognition of p27 by the scf(skp2/cks1) complex, the ubiquitin-protein isopeptide ligase (e3).	SIGNOR-154194
Q9NRC8	Q71DI3	1	deacetylation	up-regulates activity	0.2	SIRT7 links H3K18 deacetylation to maintenance of oncogenic transformation.\|Genome-wide binding studies reveal that SIRT7 binds to promoters of a specific set of gene targets, where it deacetylates H3K18Ac and promotes transcriptional repression.	SIGNOR-275875
P00519	Q96PH1	1	phosphorylation	up-regulates activity	0.303	As shown in Fig. xref and c, c-Abl-phosphorylated NOX5 was mostly inhibited when c-Abl plasmid co-transfected with NOX5 Y476/Y478F mutant, then the NOX5 Y487F mutant, but not with NOX5 Y519F mutant.\|Collectively, these results indicate that Pyk2 may act as a scaffolding protein for c-Abl stimulation of NOX5 activity in Pyk2 and NOX5 complex, and c-Abl-enhanced NOX5 activity is mainly dependent on phosphorylation of NOX5 Tyr 476/478 sites.	SIGNOR-280170
Q8N6P7	Q9GZX6	2	binding	up-regulates	0.893	In addition, il-22 mediates inflammation and binds class ii cytokine receptor heterodimers il-22 ra1/crf2-4.	SIGNOR-86340
P38405	Q96LB2	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-256929
Q9UPU5	Q92466	1	deubiquitination	up-regulates	0.703	Usp24-mediated ddb2 deubiquitination prevents ddb2 degradation	SIGNOR-199731
Q05513	Q15831	1	phosphorylation	up-regulates	0.321	Here, we have identified s307 as a novel phosphorylation site in lkb1 and provide evidence that, in multiple cell types, phosphorylation of this site by protein kinase c ? (pkc-?) Induces nucleocytoplasmic transport of lkb1.	SIGNOR-185640
P45985	Q02779	0	phosphorylation	up-regulates activity	0.445	MST/MLK2, a member of the mixed lineage kinase family, directly phosphorylates and activates SEK1, an activator of c-Jun N-terminal kinase/stress-activated protein kinase.	SIGNOR-278954
Q86WB0	P24941	0	phosphorylation	down-regulates	0.2	Moreover, we found cyclin b1/cdk1 to phosphorylate nipa at ser-395 in mitosis. Mutation of both ser-359 and ser-395 impaired effective inactivation of the scfnipa complex, resulting in reduced levels of mitotic cyclin b1	SIGNOR-154051
Q13114	P25942	2	binding	up-regulates activity	0.918	Cd40, a tumor necrosis factor receptor (tnfr) family member, forms a complex containing adaptor molecules traf2 and traf3.	SIGNOR-250560
P68400	P35579	1	phosphorylation	up-regulates	0.34	In egf-stimulated cells, the myosin-iia heavy chain is phosphorylated on the casein kinase 2 site (s1943)	SIGNOR-155987
P08047	Q9NVW2	1	transcriptional regulation	up-regulates quantity by expression	0.2	Thus, RLIM is a novel target of p53, and p53 exerts its inhibitory effect on RLIM expression by interfering with Sp1-mediated transcriptional activation on RLIM.\|Although p53 does not directly bind to the RLIM promoter, it physically interacts with and prevents the binding of Sp1 to the RLIM promoter.	SIGNOR-268980
P13762	Q8TCQ1	0	polyubiquitination	down-regulates quantity by destabilization	0.2	Two E3 ligases, MARCH I and MARCH VIII, have been shown to polyubiquitinate lysine residue 225 in the cytoplasmic tail of I-Abeta and HLA-DRbeta. We show that lysine residue 219 in the cytoplasmic tail of DRalpha is also subject to polyubiquitination.	SIGNOR-271409
P49354	P01116	1	null	up-regulates activity	0.382	Major investments have been made to target Ras through indirect routes. Inhibition of farnesyl transferase to block Ras maturation has failed in large clinical trials.	SIGNOR-242559
P04275	P29122	0	cleavage	up-regulates activity	0.293	Like PACE,PACE4 was able to process pro-vWF to its mature form, and efficient cleavage required both the P4 arginine and the P2 lysine	SIGNOR-260367
P03372	P49841	0	phosphorylation	up-regulates	0.34	The gsk-3 inhibitor lithium chloride was used to determine the role of gsk-3 in phosphorylation of ser-102, -104, and -106 and ser-118 in vivo and to explore the role of these serines in the regulation of eralpha function. Treatment of cells with lithium chloride resulted in dephosphorylation of ser-104 and -106 and ser-118, which suggests these serine residues as targets for gsk-3 in vivo. Our results further suggest that eralpha phosphorylation by gsk-3 stabilizes eralpha under resting conditions and modulates eralpha transcriptional activity upon ligand binding. Estradiol and phorbol ester cause phosphorylation of serine 118 in the human estrogen receptor. Potentiation of human estrogen receptor alpha transcriptional activation through phosphorylation of serines 104 and 106 by the cyclin a-cdk2 complex.	SIGNOR-139316
P78347	P12931	0	phosphorylation	up-regulates activity	0.453	C-Src-dependent transcriptional activation of TFII-ITFII-I is a multifunctional transcription factor that is also involved in signal transduction. Here we show that TFII-I undergoes a c-Src-dependent tyrosine phosphorylation on tyrosine residues 248 and 611 and translocates to the nucleus in response to growth factor signaling	SIGNOR-247189
Q9UJY1	P17252	0	phosphorylation	up-regulates activity	0.307	Hsp22 is phosphorylated by protein kinase c (at residues ser(14) and thr(63)) and by p44 mitogen-activated protein kinase (at residues ser(27) and thr(87)). Concerning the possible function of hsp22, no definitive conclusions can be drawn with the available data, although its function might be to bind to and modulate the activity of hsp27.Some Studies claimed that phosphorylation is required for the translocation	SIGNOR-107688

Q96EP1

Q96EB6

1

ubiquitination

down-regulates quantity

0.372

CHFR binds to and ubiquitylates SIRT1, leading to its proteasomal degradation.|CHFR ubiquitylates and promotes the proteasomal degradation of SIRT1.

SIGNOR-278691

P05067

Q8IV08

2

binding

up-regulates quantity

0.373

Furthermore, PLD3 can be co-immunoprecipitated with APP in cultured cells (Extended Data Figure 4). Together, these studies demonstrate that PLD3 plays a role in APP processing. Over-expression of PLD3 leads to a significant decrease in intracellular APP and extracellular Aβ42 and Aβ40, while knock-down of PLD3 leads to a significant increase in extracellular Aβ42 and Aβ40. Together, our genetic and functional data indicate that carriers of PLD3 coding variants have a two-fold increased risk for LOAD and that PLD3 influences APP processing.

SIGNOR-261200

P06493

P18754

1

phosphorylation

up-regulates activity

0.504

We show here that Cdc2 kinase phosphorylates the serines located in or near the nuclear localization signal (NLS) of hum an RCC1, the nucleotide exchange factor for Ran. This phosphorylation is necessary for RCC1 to generate RanGTP on mitotic chromosomes in mammalian cells, which in turn is required for spindle assembly and chromosome segregation. However, when both S2 and S11 were simultaneously mutated to As, the resulting 6His-RCC1S2,11A failed to be phosphorylated, whereas all of the other double mutants were phosphorylated (Fig. 1C). As expected, mutating all four sites to As (the 6His-RCC1S2,11,387A-T274A) also blocked phosphorylation (Fig. 1C).

SIGNOR-262704

Q9H2X6

P54646

0

phosphorylation

down-regulates activity

0.2

AMPKalpha2-mediated inhibition of WIP1 phosphorylation by HIPK2|Site-directed mutagenesis of Thr112 and Ser114 in the N terminus, and Thr1107 in the C terminus markedly reduced HIPK2 phosphorylation by AMPKalpha2 in vitro

SIGNOR-275485

Q16236

Q9NP59

1

transcriptional regulation

up-regulates quantity by expression

0.257

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. SLC40A1 is a target gene of NFE2L2, with a putative ARE identified approximately -7 kb upstream of the SLC40A1 core promoter.

SIGNOR-279863

O14965

O94889

2

binding

up-regulates activity

0.368

We identify Aurora-A as a KLHL18-interacting partner. Overexpression of KLHL18 and CUL3 promotes Aurora-A ubiquitylation in vivo, and the CUL3-KLHL18-ROC1 ligase ubiquitylates Aurora-A in vitro. Our study reveals that the CUL3-KLHL18 ligase is required for timely entry into mitosis, as well as for the activation of Aurora-A at centrosomes.We also noticed that overexpression of both CUL3 and KLHL18 stimulated mono-ubiquitylation of Aurora-A as well (Fig. 8A,B).

SIGNOR-272021

O14522

P49023

1

dephosphorylation

down-regulates activity

0.462

To this end, using a phospho-proteomics approach, we identified and validated paxillin and STAT3 as the substrates of PTPRT [15, 16]|the PTPRT target site on paxillin is a previously uncharacterized tyrosine-88 residue (paxillin Y88)|In this study, we also show how pY88 paxillin transduces a signal to activate Akt

SIGNOR-263978

Q09472

Q00987

2

binding

down-regulates

0.687

Mdm2, a negative-feedback regulator of p53, inhibited p300-mediated p53 acetylation by complexing with these two proteins.

SIGNOR-84077

P28715

P54727

2

binding

up-regulates activity

0.639

GG-NER is initiated by the GG-NER specific factor XPC-RAD23B, in some cases with the help of UV-DDB (UV-damaged DNA-binding protein). TC-NER is initiated by RNA polymerase stalled at a lesion with the help of TC-NER specific factors CSA, CSB, and XAB2. Both pathways require the core NER factors to complete the excision process|The core NER dual incision reaction has been reconstituted in vitro with purified factors using XPC-RAD23B, TFIIH, XPA, RPA, XPG, and ERCC1-XPF (Aboussekhra et al. 1995; Mu et al. 1995; Araujo et al. 2000).|The core NER dual incision reaction has been reconstituted in vitro with purified factors using XPC-RAD23B, TFIIH, XPA, RPA, XPG, and ERCC1-XPF (Aboussekhra et al. 1995; Mu et al. 1995; Araujo et al. 2000). Functional studies revealed that XPC-RAD23B is the initial damage recognition factor in this system, as the presence of XPC-RAD23B is required for assembly of the other core NER factors and progression through the NER pathway both in vitro and in vivo

SIGNOR-275702

P35790

Q8TB45

1

phosphorylation

down-regulates quantity by destabilization

0.2

These data suggests that CKI overexpression may overcome a requirement for phosphorylation at the major mTOR sites in DEPTOR for formation of the degron and are consistent with our finding that CKI can phosphorylate S286 and S287 in DEPTOR in vitro in the absence of mTOR.

SIGNOR-279605

Q02156

Q16625

1

phosphorylation

up-regulates

0.2

Thr403, thr404, thr424 and thr438 in the occludin c-terminal domain are the predominant sites of pkc_-dependent phosphorylation . The present study demonstrates that pkc_ phosphorylates occludin on specific threonine residues and promotes assembly of epithelial tight junctions.

SIGNOR-173643

O43542

Q06609

2

binding

up-regulates quantity by stabilization

0.748

XRCC3 activation is essential for the recruitment of RAD51 to the sites of DNA lesions. It is likely that BRCA2 may directly participate in RAD51 recruitment and XRCC3 may stabilize the RAD51 filament which is in part mediated by phosphorylation.

SIGNOR-262667

Q03468

Q13216

0

ubiquitination

down-regulates quantity by destabilization

0.582

We have previously shown that CSA is a subunit of an E3 ubiquitin ligase complex. Here we demonstrate that CSB is a substrate of this ligase: Following UV irradiation, CSB is degraded at a late stage of the repair process in a proteasome- and CSA-dependent manner.

SIGNOR-271406

P68400

P49736

1

phosphorylation

up-regulates

0.259

In this work, by in vitro kinase reactions and mass spectrometry analysis of the products, we have mapped phosphorylation sites in the n terminus of mcm2 by cdc7, cdk2, cdk1, and ck2

SIGNOR-144004

Q96RR4

Q14012

1

phosphorylation

up-regulates activity

0.413

Human calcium-calmodulin dependent protein kinase I: cDNA cloning, domain structure and activation by phosphorylation at threonine-177 by calcium-calmodulin dependent protein kinase I kinase.

SIGNOR-250716

P83916

P68400

0

phosphorylation

down-regulates

0.303

Two recent papers suggest that hp1 recruitment to damage sites, rather than its rapid mobilization, is the predominant behaviour exhibited by this protein. Our findings reconcile recent findings in a new model, wherein rapid hp1beta mobilization from dsbs is mediated by its phosphorylation on thr51 by ck2

SIGNOR-187450

P56211

Q66LE6

2

binding

down-regulates activity

0.694

We identified cyclic adenosine monophosphateregulated phosphoprotein 19 (Arpp19) and -Endosulfine as two substrates of Gwl that, when phosphorylated by this kinase, associate with and inhibit PP2A, thus promoting mitotic entry.

SIGNOR-243731

O15273

Q9UKT6

0

ubiquitination

down-regulates quantity by destabilization

0.2

FBXL21 is a clock-controlled E3 ligase modulating circadian periodicity via subcellular-specific CRYPTOCHROME degradation. How FBXL21 regulates tissue-specific circadian physiology and what mechanism operates upstream is poorly understood. Here we report the sarcomere component TCAP as a cytoplasmic substrate of FBXL21.

SIGNOR-264853

Q13873

Q9HCE7

0

ubiquitination

down-regulates

0.56

Smurf1 and smurf2 are e3 ubiquitin ligases known to suppress tgf-beta signaling through degradation of smads and receptors for tgf-beta and bmps.

SIGNOR-153402

O00238

Q13253

2

binding

down-regulates activity

0.599

Noggin binds the domain that is re-quired for bmp-7 to interact with bmp type i and type ii receptors.Noggin Inhibits bmp by blocking the molecular interfaces of the binding epitopes for both type i and type ii receptors (pmid 12478285)

SIGNOR-192802

Q9Y222

Q9NZW4

1

transcriptional regulation

up-regulates quantity by expression

0.2

In addition, our in vitro analyses showed that DMP1 and its 57-kDa C-terminal fragment significantly up-regulated the Dspp promoter activities in a mesenchymal cell line.

SIGNOR-271685

Q15119

P08559

1

phosphorylation

down-regulates

0.679

Mammalian pyruvate dehydrogenase (?2_2) (e1) is regulated by phosphorylation-dephosphorylation, catalyzed by the e1-kinase and the phospho-e1-phosphatase.

SIGNOR-33141

P54762

P40763

1

phosphorylation

up-regulates activity

0.353

By integrating mouse in vivo and in vitro models with human iPSC derived astrocytes, we provide direct evidence that EphB1 can induce early astrocytic STAT3 activation via ephrin-B1 signalling.|We confirmed that EphB1 activates astrocytes by inducing ephrin-B1 dependent STAT3 phosphorylation.

SIGNOR-279709

O95166

Q9Y4P1

0

cleavage

up-regulates activity

0.861

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-141929

P33151

P23467

0

dephosphorylation

up-regulates activity

0.581

Because we had shown previously that VE-PTP supports VE-cadherin function when exogenously expressed in transfected cells, we expected it to be expressed at endothelial cell contacts.|Indeed, tyrosine phosphorylation of VE-cadherin is reduced by VE-PTP in COS-7 and CHO cells.

SIGNOR-277131

Q13464

P14136

1

phosphorylation

down-regulates activity

0.312

We report here that aurora-b phosphorylates gfap and desmin in vitro, and this phosphorylation leads to a reduction in filament forming ability. The sites phosphorylated by aurora-b;thr-7/ser-13/ser-38 of gfap, and thr-16 of desmin are common with those related to rho-associated kinase (rho-kinase), which has been reported to phosphorylate gfap and desmin at cleavage furrow during cytokinesis. We identified ser-59 of desmin to be a specific site phosphorylated by aurora-b in vitro.

SIGNOR-100192

P15169

P69905

1

cleavage

down-regulates activity

0.2

Both human plasma carboxypeptidase N (CPN) and membrane-bound carboxypeptidase M (CPM) released the C-terminal arginine (alpha-Arg141) of the alpha chain of human adult hemoglobin. Thus, the hydrolysis of hemoglobin by CPM and CPN demonstrated the contribution of the alpha-Arg141 residue to sustaining the tetrameric structure of hemoglobin and its normal oxygen affinity and vasoactivity.

SIGNOR-256508

Q99741

P53350

0

phosphorylation

up-regulates

0.566

Binding between cdc6 and plk1 occurs through the polo-box domain of plk1, and cdc6 is phosphorylated by plk1 on t37. These results suggest that plk1-mediated phosphorylation of cdc6 promotes the interaction of cdc6 and cdk1, leading to the attenuation of cdk1 activity, release of separase, and subsequent anaphase progression.

SIGNOR-169184

P15018

P40189

2

binding

up-regulates

0.79

Stimulation of cells with the interleukin-6 family of cytokines triggers homo- or hetero-dimerization of gp130. The dimerization of gp130 leads to activation of associated cytoplasmic tyrosine kinases and subsequent modification of transcription factors.Some Of these biological activities of il-6 are also often exerted by other cytokines, i.e. Il-11, lif, osm, cntf, and ct-2

SIGNOR-48108

Q13131

Q06210

1

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

Q9P286

P15976

1

phosphorylation

up-regulates activity

0.2

In addition, we defined GATA1 Ser161, Ser187 were the main phosphorylation sites by PAK5.

SIGNOR-278297

P01189-PRO_0000024969

P41968

2

binding

up-regulates activity

0.2

The melanocortin (MC) receptor family consists of five Gs-coupled receptors that control various physiological functions in response to four distinct agonists, adrenocorticotropic hormone (ACTH, also known as corticotrophin) and alpha, beta, and gamma melanocyte-stimulating hormone (MSH), which are derived from the proopiomelanocortin precursor protein, and two inverse agonists, agouti and agouti-related proteins

SIGNOR-268706

P01008

P00748

1

cleavage

down-regulates activity

0.6

Antithrombin (AT), a member of the serine protease inhibitor (SERPIN) superfamily, is a major circulating inhibitor of blood coagulation proteases such as factor (F) IIa (known as thrombin), FXa and, to a lesser extent, FIXa, FXIa and FXIIa. SERPINC1, which encodes AT in humans, is located on chromosome 1q25.1

SIGNOR-264139

P08754

P08173

2

binding

up-regulates activity

0.403

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-256829

P67775

Q12800

1

dephosphorylation

up-regulates

0.2

We previously established that phosphorylation of lsf in early g1 at ser-291 and ser-309 inhibits its transcriptional activity and that dephosphorylation later in g1 is required for its reactivation. This predominant cis conformation would also limit dephosphorylation of ser-291 and ser-309 by phosphatases such as pp2a

SIGNOR-167385

P21453

Q9C0B5

0

palmitoylation

up-regulates activity

0.2

We propose that DHHC5-mediated palmitoylation of S1P1R determines Gi coupling and its signalling in a spatio/temporal manner.

SIGNOR-261140

P10911

P63000

1

guanine nucleotide exchange factor

up-regulates activity

0.665

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-260557

Q71F23

P53350

0

phosphorylation

down-regulates

0.741

S77 and t78 of pbip1 are important for plk1-dependent pbip1 phosphorylation and degradation. Here, we demonstrate that a pbd-binding protein, pbip1, is crucial for recruiting plk1 to the interphase and mitotic kinetochores. Unprecedentedly, plk1 phosphorylated pbip1 at t78. Later in mitosis, plk1 also induced pbip1 degradation in a t78-dependent manner, thereby enabling itself to interact with other components critical for proper kinetochore functions

SIGNOR-150457

P63092

P43220

2

binding

up-regulates activity

0.481

The GPCRs are allocated in five families where the GLP-1R and GIPR are found within the secretin family, also classified as class B [31,32]. Upon stimulation by an extracellular stimuli (ligand), GPCRs undergo conformational changes, and triggers downstream intracellular signals by coupling with G proteins (or other intracellular proteins such as arrestins), causing a wide range of both physiological and pathological processes.To stimulate insulin secretion, and in the presence of elevated blood glucose concentrations, GLP-1R activation in pancreatic beta cells promote recruitment and activation of Gαs protein leading to adenylate cyclase-mediated cAMP production, elevation of Ca2+, and ERK1/2 phosphorylation (Fig. 3)

SIGNOR-278137

Q15154

Q86YT6

0

ubiquitination

down-regulates

0.371

We demonstrate that the E3 ubiquitin ligase MIB1 is a new component of centriolar satellites, which interacts with and ubiquitylates AZI1 and PCM1 and suppresses primary cilium formation.

SIGNOR-272878

P02818

P09668

0

cleavage

down-regulates quantity by destabilization

0.283

This study has been undertaken to compare the degradation of BGP by the cysteine proteinases cathepsins L, B, H, S, and the aspartic proteinase cathepsin D. Cathepsins B, L, H, and S readily cleave BGP at the G7-A8 bond; cathepsin L also cleaves at R43-R44; cathepsin B also cleaves at R44-F45; and cathepsin D cleaves only at A41-Y42.

SIGNOR-256325

O75791

Q92918

0

phosphorylation

down-regulates activity

0.834

Serine/threonine phosphorylation of the T cell adaptor proteins SLP76 and GADS by HPK1 induces their release from signaling microclusters and subsequent termination of the T cell response.

SIGNOR-279421

O75364

Q9H334

0

transcriptional regulation

up-regulates quantity by expression

0.292

We identified FoxP1 as a novel marker for midbrain dopamine neurons. Enforced expression of FoxP1 in embryonic stem cells actuates the expression of Pitx3, a homeobox protein that is exclusively expressed in midbrain dopaminergic neurons and is required for their differentiation and survival during development and from embryonic stem cells in vitro. We show that FoxP1 can be recruited to the Pitx3 locus in embryonic stem cells and regulate Pitx3 promoter activity in a dual-luciferase assay.

SIGNOR-269049

P24941

Q8TDN4

2

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

P50750

P01106

1

phosphorylation

down-regulates activity

0.54

CDK9 promotes phosphorylation of MYC on Ser 62 .

SIGNOR-279024

O43150

P84085

1

gtpase-activating protein

up-regulates activity

0.497

Pap is a multidomain protein composed of an N-terminal alpha-helical region with a coiled-coil motif, followed by a pleckstrin homology domain, an Arf-GAP domain, an ankyrin homology region, a proline-rich region, and a C-terminal SH3 domain. In addition, in vitro recombinant Pap exhibits strong GTPase-activating protein (GAP) activity towards the small GTPases Arf1 and Arf5 and weak activity towards Arf6. Pap protein exhibits Arf GAP activity in vitro.

SIGNOR-269707

Q13535

P30304

1

phosphorylation

down-regulates activity

0.643

ATR and CHK1 mediated loss of CDC25A activity suspends CDKs, such as CDK2, in an inactive phosphorylated state, blocking initiation of DNA replication origins.|In the presence of replication stalling, activated CHK1 and ATR phosphorylates CDC25A and promotes its degradation.

SIGNOR-280183

P61006

Q92834

0

guanine nucleotide exchange factor

up-regulates activity

0.427

PGR interacts with the small GTPase RAB8A, which participates in cilia biogenesis and maintenance. We show that RPGR primarily associates with the GDP-bound form of RAB8A and stimulates GDP/GTP nucleotide exchange. RPGR functions as a GEF for RAB8A and RPGR–RAB8A association may facilitate ciliary trafficking.

SIGNOR-253030

Q9NS75

O95837

2

binding

up-regulates activity

0.385

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-257140

P46937

P49336

0

phosphorylation

up-regulates activity

0.321

CDK8 phosphorylates YAP and promotes its activation. Of interest, mutating four amino acid positions (T119, S128, S289, and S367) to alanines (YAP-4A) completely blocked phosphorylation (Fig. 6J), suggesting that CDK8 phosphorylates these sites in YAP in vitro.

SIGNOR-277651

Q14258

P11308

1

ubiquitination

down-regulates quantity

0.301

We demonstrate that TRIM25 polyubiquitinates ERG in vitro and that inactivation of TRIM25 resulted in reduced polyubiquitination and stabilization of ERG.|Our previous discovery of USP9X as an ERG stabilizing deubiquitinase suggests that reduction of ERG protein levels by TRIM25 mediated proteasomal degradation is prevented by expression of USP9X in fusion positive prostate cancer cells.|Using several biochemical assays we show that TRIM25 mediates the polyubiquitination of full-length ERG as well as N-terminally truncated ERG.

SIGNOR-278732

P23759

O14686

2

binding

up-regulates

0.304

Carm1 specifically methylates multiple arginines in the n-terminus of pax7. Methylated pax7 directly binds the c-terminal cleavage forms of the trithorax proteins mll1/2 resulting in the recruitment of the ash2l:mll1/2:wdr5:rbbp5 histone h3k4 methyltransferase complex to regulatory enhancers and the proximal promoter of myf5.

SIGNOR-198629

Q8TBZ2

P22681

0

monoubiquitination

up-regulates activity

0.298

We moreover found that AMAP1 is monoubiquitinated, rather than polyubiquitinated, by virtue of Cbl and provide evidence that the ability of AMAP1 to be monoubiquitinated is important for its involvement in invasion.

SIGNOR-272627

O60674

P08575

0

dephosphorylation

down-regulates activity

0.472

Src homology-2 (SH2) containing tyrosine phosphatase and CD45 tyrosine phosphatase play a major role in modulating JAK-STAT pathway. SH2 containing tyrosine phosphatases include SHP1 and SHP2 (shatterproof 1 & 2). Their SH2 domains allow attachment to the phospho-tyrosine residues present on activated receptors, JAKs or STAT proteins, leading to dephosphorylation of the substrates.

SIGNOR-255679

Q9NYA4

P84022

1

dephosphorylation

down-regulates

0.517

Here we demonstrate that myotubularin-related protein 4

SIGNOR-163034

Q13237

P29350

1

phosphorylation

up-regulates activity

0.2

PKGII directly phosphorylated and stimulated SHP-1 activity

SIGNOR-276288

P19174

Q15139

0

phosphorylation

down-regulates activity

0.404

Thus, phosphorylation of PLC-gamma 1 by PKC or PKA at serine 1248 may modulate the interaction of PLC-gamma 1 with the protein tyrosine kinase or the protein tyrosine phosphatase; this altered interaction may, at least in part, be responsible for the decreased tyrosine phosphorylation of PLC-gamma 1 seen in PMA- and forskolin-treated Jurkat cells.

SIGNOR-248846

P69905

P00738

2

binding

down-regulates quantity

0.738

Haptoglobin forms a complex of extremely high affinity with Hb via a well-characterized globin site. Our results show that upon Hb-haptoglobin binding, the globin radical, loses its ability to be terminated by forming globin dimers.

SIGNOR-251816

P61586

B2RTY4

0

gtpase-activating protein

down-regulates activity

0.565

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-260508

Q16584

Q7Z6J0

2

binding

up-regulates

0.502

Taken together, these findings support a model in which apoptotic stimuli or posh overexpression induce direct association between posh and inactive mlks.

SIGNOR-97006

P68431

O60341

0

demethylation

up-regulates activity

0.2

Here, we provide evidence that LSD1 (KIAA0601), a nuclear homolog of amine oxidases, functions as a histone demethylase and transcriptional corepressor. LSD1 specifically demethylates histone H3 lysine 4, which is linked to active transcription.

SIGNOR-264507

P07225

P38435

0

carboxylation

up-regulates activity

0.613

Gamma-carboxylation is essential in the activation and proper functioning of multiple VK-dependent proteins (VKDP), the most well-known of which are involved in blood clotting, including coagulation factors (FII, FVII, FIX and FX) and natural anti-clotting agents (protein C, protein S (ProS; OMIM*176880) and protein Z

SIGNOR-265924

O43524

P31751

0

phosphorylation

down-regulates activity

0.751

Akt-dependent phosphorylation of foxo3a (thr32, ser253, and ser315 for human foxo3) enhances foxo3a/14-3-3 Interaction and promotes foxo3a nuclear export to the cytoplasm, resulting in the repression of foxo3a transcriptional function akt phosphorylates members of the foxo factors (forkhead family of transcription factors), leading to binding of 14-3-3 proteins and cytoplasmic localisation. In particular, akt phosphorylates foxo1 on thr24, ser256 and ser319. Foxo 3alfa and foxo4 are phosphorylated on equivalent sites.

SIGNOR-236671

P46734

P53778

1

phosphorylation

up-regulates

0.648

Mkk3, mkk4 and mkk6 all show a strong preference for phosphorylation of the tyrosine residue of the thr-gly-tyr motifs in their known substrates sapk2a/p38, sapk3/p38 gamma and sapk4/p38 delta. we therefore examined the phosphorylation of sapk2a/p38, sapk3/p38? And sapk4/p38? By mkk3, mkk4 and mkk6, which are all known to be capable of activating these enzymes in vitro.

SIGNOR-83718

Q9UQM7

Q00975

1

phosphorylation

down-regulates

0.317

Here, we report a direct modulation of ca(v)2.2 channel inactivation properties by 14-3-3, a family of signaling proteins involved in a wide range of biological processes.Wild-type gst fusion proteins containing the putative 14-3-3-binding motif (aa 2076__?2140) werein vitro phosphorylated at s2126 by either camkii or pka, as detected by thesequence- and phosphorylation-specific antibody, anti-ps2126 (middle panel). Phosphorylation of s2126 significantly increases its binding to recombinant 14-3-3?

SIGNOR-149684

O00141

P43003

1

phosphorylation

up-regulates activity

0.415

Site‐directed mutagenesis of the SGK1 phosphorylation sites in the Nedd4‐2 protein (S382A,S468ANedd4‐2) and in the EAAT1 protein (T482AEAAT1, T482DEAAT1) significantly blunts the effect of S422DSGK1. Introduction of a negative charge at the SGK phosphorylation site in the EAAT1 protein leads to a strong stimulation of the carrier, whereas replacement with alanine markedly decreases the EAAT1‐mediated current. These observations suggest that SGK1 exerts its effect not only by phosphorylation of Nedd4‐2 but also by phosphorylation of EAAT1.

SIGNOR-263075

Q13043

P22455

0

phosphorylation

down-regulates activity

0.2

FGFR4 phosphorylates MST1 to confer breast cancer cells resistance to MST1/2 dependent apoptosis.|We provide evidence suggesting that by Y433-MST1 phosphorylation , FGFR4 inhibits MST1 / 2 activation .

SIGNOR-279714

Q9NR30

P05412

2

binding

up-regulates activity

0.455

C-Jun and RHII/Gu proteins interact in human cells at their endogenous level of expression. The helicase activity of RHII/Gu specifically facilitates c-Jun-mediated transcription.

SIGNOR-260977

P63096

Q9Y5X5

2

binding

up-regulates activity

0.25

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

SIGNOR-256709

Q9NWF9

O00206

1

ubiquitination

down-regulates quantity by destabilization

0.388

Here we describe how a RING finger protein, Triad3A, acts as an E3 ubiquitin-protein ligase and enhances ubiquitination and proteolytic degradation of some TLRs. Triad3A overexpression promoted substantial degradation of TLR4 and TLR9 with a concomitant decrease in signaling, but did not affect TLR2 expression or signaling.

SIGNOR-271504

P06730

P11940

2

binding

up-regulates activity

0.805

The binding of PABP to mRNA poly(A) tails is followed by interactions with eukaryotic initiation factor (eIF4G) and other translation factors, including eIF4E, to constitute a translation initiation complex, which mediates cellular mRNA circularization and enhances cap-dependent translation by facilitating ribosome recycling

SIGNOR-260968

P12821

P01019-PRO_0000032457

2

binding

up-regulates activity

0.2

Ang I is subsequently converted into the major RAS effector peptide Ang II or Ang (1–8), through activity of the zinc-dependent protease ACE, which hydrolyzes two amino acids from the carboxy terminus of Ang I

SIGNOR-260231

P00450

Q15465

2

binding

down-regulates

0.2

Binding of sonic hedgehog (shh) to patched (ptc) relieves the latter's tonic smoothened (smo), a receptor that spans the cell membrane seven times. Ptch exists in vertebrates as two isoforms, ptch1 and ptch2, which seem to be equivalent in terms of binding the three hh isoforms.

SIGNOR-132672

Q9Y618

Q04206

0

relocalization

down-regulates activity

0.404

Furthermore, overexpression of Flt3-ITD led to a partial relocalization of SMRT protein from the nucleus to the cytoplasm. This indicates that shuttling of p65 was necessary for Flt3-ITD-mediated SMRT nuclear export.

SIGNOR-261539

Q6KF10

P36894

2

binding

up-regulates

0.596

We found that transfection of small hairpin rna for bmprii and actriia in mc3t3 cells suppressed the signaling of gdf6, gdf7, and bmp10.

SIGNOR-139090

O14965

Q92974

1

phosphorylation

down-regulates activity

0.332

The mitotic kinases Aurora A/B and Cdk1/Cyclin B phosphorylate GEF-H1, thereby inhibiting GEF-H1 catalytic activity.

SIGNOR-276061

Q8N752

O75581

1

phosphorylation

up-regulates

0.254

Ck1 also phosphorylates lrp6 at the second ser residue in the pppspxs motif ck1_ in the lrp5/e-cadherin/p120-catenin complex temporally coincides with p120-catenin phosphorylation in ser268. moreover, and considering the close similarity between the catalytic domains of ck1_ and ck1_, it is possible that ck1_ is indeed responsible for the phosphorylation at ser1420 and ser1430 in lrp5/6 that negatively affects wnt signaling by still not defined mechanisms

SIGNOR-173853

O00763

Q96RU7

2

binding

down-regulates quantity by destabilization

0.258

TRB3 appears to inhibit ACC activity by functioning as an adaptor for COP1. Taken together, these results suggest that TRB3 may promote loss of fat by mediating the COP1-dependent ubiquitination and inactivation of ACC. Taking these results together, we propose that TRB3 may protect against diet-induced obesity by stimulating fatty acid oxidation in adipose during fasting through the COP1-mediated ubiquitination and degradation of ACC (Fig. 4D).

SIGNOR-271601

P35222

P17612

0

phosphorylation

up-regulates activity

0.478

Although pka did not affect the formation of a complex between glycogen synthase kinase 3beta (gsk-3beta), beta-catenin, and axin, phosphorylation of beta-catenin by pka inhibited ubiquitination of beta-catenin in intact cells and in vitro.

SIGNOR-140902

P17612

Q15052

1

phosphorylation

down-regulates activity

0.2

ARHGEF6 is a Rho guanine nucleotide exchange factor for Rac1 and constitutively bound to GIT1. NO and PGI2 activate PKG and PKA, respectively and both kinases phosphorylate ARHGEF6 on Ser-684 and possibly on Ser-640. Phosphorylation of ARHGEF6 results in the assembly of a GIT1-ARHGEF6–14-3-3 complex. These changes might contribute to PGI2- and NO-mediated Rac1 inhibition.

SIGNOR-272162

Q9NR96

Q9NWF9

0

ubiquitination

down-regulates quantity by destabilization

0.406

Here we describe how a RING finger protein, Triad3A, acts as an E3 ubiquitin-protein ligase and enhances ubiquitination and proteolytic degradation of some TLRs. Triad3A overexpression promoted substantial degradation of TLR4 and TLR9 with a concomitant decrease in signaling, but did not affect TLR2 expression or signaling.

SIGNOR-271505

Q00987

P62140

0

dephosphorylation

up-regulates quantity by stabilization

0.2

Three phosphorylation sites identified are Ser342, Ser367, and Ser403. In the present study, we identify protein phosphatase 1 (PP1) as a negative regulator in the p53 signaling pathway. PP1 directly interacts with Mdmx and specifically dephosphorylates Mdmx at Ser367. The dephosphorylation of Mdmx increases its stability and thereby inhibits p53 activity.

SIGNOR-248577

Q13309

P46527

1

ubiquitination

down-regulates

0.766

Up-regulation of skp2 by notch signaling enhances proteasome-mediated degradation of the ckis, p27 kip1 and p21 cip1, and causes premature entry into s phase. ;the recognition of p27 by skp2/cks1 of the scfskp2 complex is dictated by cycline/cdk2, providing a high affinity binding site and the phosphorylation of p27 at t187, serving here we provide evidence suggesting that both cdk2/e and phosphorylation of thr(187) on p27 are essential for the recognition of p27 by the scf(skp2/cks1) complex, the ubiquitin-protein isopeptide ligase (e3).

SIGNOR-154194

Q9NRC8

Q71DI3

1

deacetylation

up-regulates activity

0.2

SIRT7 links H3K18 deacetylation to maintenance of oncogenic transformation.|Genome-wide binding studies reveal that SIRT7 binds to promoters of a specific set of gene targets, where it deacetylates H3K18Ac and promotes transcriptional repression.

SIGNOR-275875

P00519

Q96PH1

1

phosphorylation

up-regulates activity

0.303

As shown in Fig. xref and c, c-Abl-phosphorylated NOX5 was mostly inhibited when c-Abl plasmid co-transfected with NOX5 Y476/Y478F mutant, then the NOX5 Y487F mutant, but not with NOX5 Y519F mutant.|Collectively, these results indicate that Pyk2 may act as a scaffolding protein for c-Abl stimulation of NOX5 activity in Pyk2 and NOX5 complex, and c-Abl-enhanced NOX5 activity is mainly dependent on phosphorylation of NOX5 Tyr 476/478 sites.

SIGNOR-280170

Q8N6P7

Q9GZX6

2

binding

up-regulates

0.893

In addition, il-22 mediates inflammation and binds class ii cytokine receptor heterodimers il-22 ra1/crf2-4.

SIGNOR-86340

P38405

Q96LB2

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-256929

Q9UPU5

Q92466

1

deubiquitination

up-regulates

0.703

Usp24-mediated ddb2 deubiquitination prevents ddb2 degradation

SIGNOR-199731

Q05513

Q15831

1

phosphorylation

up-regulates

0.321

Here, we have identified s307 as a novel phosphorylation site in lkb1 and provide evidence that, in multiple cell types, phosphorylation of this site by protein kinase c ? (pkc-?) Induces nucleocytoplasmic transport of lkb1.

SIGNOR-185640

P45985

Q02779

0

phosphorylation

up-regulates activity

0.445

MST/MLK2, a member of the mixed lineage kinase family, directly phosphorylates and activates SEK1, an activator of c-Jun N-terminal kinase/stress-activated protein kinase.

SIGNOR-278954

Q86WB0

P24941

0

phosphorylation

down-regulates

0.2

Moreover, we found cyclin b1/cdk1 to phosphorylate nipa at ser-395 in mitosis. Mutation of both ser-359 and ser-395 impaired effective inactivation of the scfnipa complex, resulting in reduced levels of mitotic cyclin b1

SIGNOR-154051

Q13114

P25942

2

binding

up-regulates activity

0.918

Cd40, a tumor necrosis factor receptor (tnfr) family member, forms a complex containing adaptor molecules traf2 and traf3.

SIGNOR-250560

P68400

P35579

1

phosphorylation

up-regulates

0.34

In egf-stimulated cells, the myosin-iia heavy chain is phosphorylated on the casein kinase 2 site (s1943)

SIGNOR-155987

P08047

Q9NVW2

1

transcriptional regulation

up-regulates quantity by expression

0.2

Thus, RLIM is a novel target of p53, and p53 exerts its inhibitory effect on RLIM expression by interfering with Sp1-mediated transcriptional activation on RLIM.|Although p53 does not directly bind to the RLIM promoter, it physically interacts with and prevents the binding of Sp1 to the RLIM promoter.

SIGNOR-268980

P13762

Q8TCQ1

0

polyubiquitination

down-regulates quantity by destabilization

0.2

Two E3 ligases, MARCH I and MARCH VIII, have been shown to polyubiquitinate lysine residue 225 in the cytoplasmic tail of I-Abeta and HLA-DRbeta. We show that lysine residue 219 in the cytoplasmic tail of DRalpha is also subject to polyubiquitination.

SIGNOR-271409

P49354

P01116

1

null

up-regulates activity

0.382

Major investments have been made to target Ras through indirect routes. Inhibition of farnesyl transferase to block Ras maturation has failed in large clinical trials.

SIGNOR-242559

P04275

P29122

0

cleavage

up-regulates activity

0.293

Like PACE,PACE4 was able to process pro-vWF to its mature form, and efficient cleavage required both the P4 arginine and the P2 lysine

SIGNOR-260367

P03372

P49841

0

phosphorylation

up-regulates

0.34

The gsk-3 inhibitor lithium chloride was used to determine the role of gsk-3 in phosphorylation of ser-102, -104, and -106 and ser-118 in vivo and to explore the role of these serines in the regulation of eralpha function. Treatment of cells with lithium chloride resulted in dephosphorylation of ser-104 and -106 and ser-118, which suggests these serine residues as targets for gsk-3 in vivo. Our results further suggest that eralpha phosphorylation by gsk-3 stabilizes eralpha under resting conditions and modulates eralpha transcriptional activity upon ligand binding. Estradiol and phorbol ester cause phosphorylation of serine 118 in the human estrogen receptor. Potentiation of human estrogen receptor alpha transcriptional activation through phosphorylation of serines 104 and 106 by the cyclin a-cdk2 complex.

SIGNOR-139316

P78347

P12931

0

phosphorylation

up-regulates activity

0.453

C-Src-dependent transcriptional activation of TFII-ITFII-I is a multifunctional transcription factor that is also involved in signal transduction. Here we show that TFII-I undergoes a c-Src-dependent tyrosine phosphorylation on tyrosine residues 248 and 611 and translocates to the nucleus in response to growth factor signaling

SIGNOR-247189

Q9UJY1

P17252

0

phosphorylation

up-regulates activity

0.307

Hsp22 is phosphorylated by protein kinase c (at residues ser(14) and thr(63)) and by p44 mitogen-activated protein kinase (at residues ser(27) and thr(87)). Concerning the possible function of hsp22, no definitive conclusions can be drawn with the available data, although its function might be to bind to and modulate the activity of hsp27.Some Studies claimed that phosphorylation is required for the translocation

SIGNOR-107688