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P46663
O95837
2
binding
up-regulates activity
0.435
Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. | We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. | The score associated to this interaction has a LogRAi ≥ -1.0.
SIGNOR-257362
Q6ZNA4
P12755
1
ubiquitination
down-regulates
0.595
On tgf-beta treatment, the e3 ubiquitin ligase arkadia mediates degradation of ski in a smad-dependent manner
SIGNOR-178598
Q13639
P08754
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-257154
P27361
Q03060
1
phosphorylation
down-regulates quantity by destabilization
0.41
 The MAPKs extracellular signal-regulated kinases 1 and 2 physically interact with ICER and mediated the phosphorylation of ICER on a critical serine residue (Ser-41). A mutant form of ICER in which Ser-41 was substituted by alanine had a half-life 4-5 h longer than its wild-type counterpart. This alteration in stability was due to the inability of the Ser-41-mutant ICER to be efficiently ubiquitinated and degraded via the ubiquitin-proteasome pathway. 
SIGNOR-275978
O76064
P54132
1
ubiquitination
up-regulates activity
0.337
Here, we demonstrate that the ubiquitin/SUMO-dependent DNA damage response (UbS-DDR), controlled by the E3 ligases RNF8/RNF168, triggers BLM recruitment to sites of replication fork stalling via ubiquitylation in the N-terminal region of BLM and subsequent BLM binding to the ubiquitin-interacting motifs of . 
SIGNOR-272115
P17252
O60928
1
phosphorylation
down-regulates
0.2
After pharmacological pkc activation, kir7.1 currents were strongly inhibited. Co-application of pkc inhibitors attenuated this effect. Inactivation of pkc consensus sites also strongly attenuated the effect with a single site ((201)s) being essential for almost the total pkc sensitivity.
SIGNOR-181863
O00459
Q9UK22
2
binding
down-regulates quantity by destabilization
0.2
 FBXL2 interacts with the pool of p85β that is free of p110 PI(3)K catalytic subunits and targets this pool for ubiquitylation and subsequent proteasomal degradation.
SIGNOR-271936
Q99683
P11309
0
phosphorylation
down-regulates
0.28
Pim1 phosphorylates and negatively regulates ask1-mediated apoptosispim1 phosphorylation of ask1 on ser83 inhibited ask1-mediated c-jun n-terminal kinase phosphorylation
SIGNOR-187905
O14745
Q15418
0
phosphorylation
up-regulates activity
0.33
In summary, these results demonstrate that Ras-RSK1 signaling promotes nuclear localization of EBP50.|Specifically, RSK1 phosphorylates EBP50 at threonine 156 (T156) residue in a cell cycle dependent manner, which is important for nuclear translocation of EBP50 to facilitate cellular proliferation and transformation.
SIGNOR-278290
Q8WXE1
P15927
2
binding
up-regulates
0.686
Ssdna lesions are then coated by replication protein a (rpa), recruiting atr/atrip (atr-interacting protein) complexes via recognition and association of rpa-ssdna by atrip.
SIGNOR-163176
Q99661
Q96GD4
0
phosphorylation
up-regulates
0.731
Here, we show that the binding of mcak to chromosome arms is also regulated by aurora b and that aurora b-dependent chromosome arm and centromere localization is regulated by distinct two-site phosphoregulatory mechanisms. Mcak association with chromosome arms is promoted by phosphorylation of t95 on mcak, whereas phosphorylation of s196 on mcak promotes dissociation from the arms. Although targeting of mcak to centromeres requires phosphorylation of s110 on mcak, dephosphorylation of t95 on mcak increases the binding of mcak to centromeres.
SIGNOR-155890
P10415
O00198
2
binding
down-regulates
0.472
Hrk, physically interacts with the death-repressor proteins bcl2 and bcl2l1. Hrk activates cell death at least in part by interacting with and inhibiting the protection afforded by bcl2 and bcl2l1.
SIGNOR-47794
O75364
Q13330
2
binding
up-regulates activity
0.325
we found that the MTA1/DJ1 complex is required for optimum stimulation of the TH expression by paired like homeodomain transcription factor (Pitx3) homeodomain transcription factor and that the MTA1/DJ1 complex is recruited to the TH gene chromatin via the direct interaction of MTA1 with Pitx3.
SIGNOR-239770
P22413
P0DMV8
0
post transcriptional regulation
up-regulates quantity
0.2
We demonstrated the binding of heat shock protein 70 (HSP70) to ENPP1-3'UTR. Through this binding, HSP70 stabilizes ENPP1 mRNA and increases ENPP1 transcript and protein levels. This positive modulation of ENPP1 expression is paralleled by a reduced insulin-induced IR and IRS-1 phosphorylation.
SIGNOR-252197
O14965
Q96EP1
0
polyubiquitination
down-regulates quantity by destabilization
0.471
Chfr, a mitotic stress checkpoint, plays an important role in cell cycle progression, tumor suppression and the processes that require the E3 ubiquitin ligase activity mediated by the RING finger domain. Chfr stimulates the formation of polyubiquitin chains by ub-conjugating enzymes, and induces the proteasome-dependent degradation of a number of cellular proteins including Plk1 and Aurora A.
SIGNOR-271463
P27361
O43524
1
phosphorylation
down-regulates quantity by destabilization
0.595
Phosphorylation of foxo3a by erk1/2 at residues ser 294, ser 344 and ser 425 increases foxo3amdm2 interaction and enhances foxo3a degradation via an mdm2-dependent ubiquitin-proteasome pathway
SIGNOR-184569
P10916
Q15746
0
phosphorylation
up-regulates activity
0.72
MLCK directly phosphorylates MLC2 and is a substrate for ERK1/2 ( ), thus providing a direct link between the Raf-MEK1/2-ERK1/2 module and MLC2.|These findings strongly suggest that the phosphorylation of MLC2 stimulated by MLCK and ROCK1/2 is an integral component of the biochemical signal transduction program that promotes noninvasive motility.
SIGNOR-279233
Q14938
Q14393
1
transcriptional regulation
down-regulates quantity
0.205
By integrating transcriptomic profiling (RNA-seq) of Nfia- and Nfix-deficient GNPs with epigenomic profiling (ChIP-seq against NFIA, NFIB and NFIX, and DNase I hypersensitivity assays), we reveal that these transcription factors share a large set of potential transcriptional targets, suggestive of complementary roles for these NFI family members in promoting neural development
SIGNOR-268888
Q8TAS1
Q9BSJ6
1
phosphorylation
up-regulates
0.2
Cats is a substrate of kis and mapped the phosphorylation site to cats serine 131 (s131). Kis enhances the transcriptional repressor activity of cats
SIGNOR-192702
Q14980
Q9BQE3
2
binding
up-regulates
0.258
Direct binding of numa to tubulin is mediated by a novel sequence motif in the tail domain that bundles and stabilizes microtubules.
SIGNOR-116677
Q71F56
Q969H0
0
ubiquitination
down-regulates quantity by destabilization
0.359
The SCF-Fbw7 ubiquitin ligase degrades MED13 and MED13L and regulates CDK8 module association with Mediator. We show that Fbw7, a tumor suppressor and ubiquitin ligase, binds to CDK8-Mediator and targets MED13/13L for degradation. MED13/13L physically link the CDK8 module to Mediator, and Fbw7 loss increases CDK8 module-Mediator association.
SIGNOR-266688
O43791
P53671
0
phosphorylation
down-regulates activity
0.2
LIMK2 phosphorylates SPOP at S59, S171 and S226.|Together, these results depict that LIMK2-mediated SPOP degradation is a key mechanism that regulates AR stability.
SIGNOR-278338
P50281
P00748
1
cleavage
down-regulates quantity by destabilization
0.331
The data presented in this study show for the first time the degradation of Factor XII of the blood clotting system by matrix metalloproteinases. MMP-12, MMP-13, and MMP-14 cleave at Gly376Leu377|However, no activity of Factor XII can be observed after MMPinduced cleavage.
SIGNOR-263610
Q13233
P40763
1
phosphorylation
up-regulates activity
0.291
Phosphorylation of s727 induces pin1 binding which increases transcription. Pin1 binding increases stat3 interaction with p300 and dna.
SIGNOR-236346
P46527
P24941
2
binding
down-regulates
0.95
P27, an important cell cycle regulator, blocks the g(1)/s transition in cells by binding and inhibiting cdk2/cyclin a and cdk2/cyclin e complexes (cdk2/e).
SIGNOR-154191
P12931
Q00610
1
phosphorylation
up-regulates
0.406
Egf-mediated clathrin phosphorylation is followed by clathrin redistribution to the cell periphery and is the product of downstream activation of src kinase by egf receptor (egfr) signaling
SIGNOR-65714
Q15398
O14965
0
phosphorylation
up-regulates quantity by stabilization
0.751
Phosphorylation and stabilization of HURP by Aurora-A. Four phosphorylated residues were identified, namely, HURP-S627, -S725, -S757, and -S830, with 65% amino acid sequence coverage. we propose here that Aurora-A may phosphorylate HURP and this probably attenuates the negative impact of cdk1 phosphorylation and by inhibiting subsequent proteasome activity and this will generate a longer HURP half-life.
SIGNOR-262651
P62136
P04637
1
dephosphorylation
down-regulates activity
0.314
Protein serine/threonine phosphatase-1 dephosphorylates p53 at Ser-15 and Ser-37 to modulate its transcriptional and apoptotic activities|In addition, our results reveal that one of the molecular mechanisms by which PP-1 promotes cell survival is to dephosphorylate p53, and thus negatively regulate p53-dependent death pathway.
SIGNOR-248557
P02458
P03956
0
cleavage
down-regulates quantity by destabilization
0.445
MMP-1 cleaves type II collagen at the peptide bond Gly906-Leu907 Proteolysis of triple-helical collagen is an important step in the progression toward irreversible tissue damage in osteoarthritis. Earlier work on the expression of enzymes in cartilage suggested that collagenase-1 (MMP-1) contributes to the process.
SIGNOR-256341
P18887
P19784
0
phosphorylation
up-regulates activity
0.46
XRCC1 is phosphorylated in vivo and in vitro by CK2, and CK2 phosphorylation of XRCC1 on S518, T519, and T523 largely determines aprataxin binding to XRCC1 though its FHA domain | In addition, we present data to show that the acute loss of aprataxin by small interfering RNA (siRNA) renders HeLa cells sensitive to MMS through a mechanism that destabilizes XRCC1.
SIGNOR-251050
Q96CN5
Q9BV73
2
binding
up-regulates activity
0.408
Here, we show that LRRC45 is a centrosome linker that localizes at the proximal ends of the centrioles and forms fiber-like structures between them. Depletion of LRRC45 results in centrosome splitting during interphase. LRRC45 interacts with C-Nap1 and rootletin
SIGNOR-273703
Q13253
P12644
2
binding
down-regulates
0.814
Noggin acts by binding bmps, thus preventing them from binding to their receptors (180). Noggin binds with various degrees of affinity bmp-2, -4, -5, -6, and -7, gdf-5, gdf-6, and vg1, but not other members of the tgf- family of peptides
SIGNOR-100660
O75093
P35052
2
binding
up-regulates
0.382
Slit family proteins are functional ligands of glypican-1 in nervous tissue and suggest that their interactions may be critical for certain stages of central nervous system histogenesis.
SIGNOR-68327
P13498
Q05655
0
phosphorylation
up-regulates
0.2
Phosphorylation of p22phox on threonine 147 enhances NADPH oxidase activity by promoting p47phox binding. | Threonine 147 of p22phox Is Phosphorylated by PKC-α and PKC-δ in Vitro
SIGNOR-260892
P30260
P68400
0
phosphorylation
up-regulates
0.378
We report here that phosphorylation of cdc27, a core subunit of apc, in response to tgf- signaling can facilitate the activation of apc.we have demonstrated that casein kinase ii (ckii) is involved in the phosphorylation of cdc27 in response to tgf- signaling.
SIGNOR-170872
P29590
P68400
0
phosphorylation
down-regulates
0.342
Here we show that ck2 regulates pml protein levels by promoting its ubiquitin-mediated degradation dependent on direct phosphorylation at ser517.
SIGNOR-148306
P29459
P29460
2
binding
up-regulates
0.848
However, a proper conformation required for high affinity binding is achieved only when p40 is associated with a p35 subunit or another p40 subunit. When p40 is associated with a p35 subunit, the heterodimer acts as an agonist mediating biologic activity. However, when p40 associates with another p40, the homodimer behaves as an antagonist in vitro
SIGNOR-27619
Q9H410
Q8IWV8
0
ubiquitination
down-regulates quantity
0.2
Mub1 and Ubr2 mediate Dsn1 ubiquitylation and degradation.|The levels of WT Dsn1 were also increased in the mub1Delta and ubr2Delta strains, suggesting that Mub1 and Ubr2 mediate the degradation of WT Dsn1 protein.
SIGNOR-278795
Q13114
P0C6X7-PRO_0000037311
0
deubiquitination
down-regulates activity
0.2
Overexpressing PLPro of SARS-CoV or MERS-CoV significantly reduced the expression of IFN-β and proinflammatory cytokines in MDA5-stimulated 293T cells (83).Also, SARS-CoVPLPro catalyzed deubiquitination of TNF-receptor-associated factor3 (TRAF3) and TRAF6, thereby suppressing IFN-I and proinflammatory cytokines induced by TLR7 agonist (63). The deubiquitinating activity of SARS-CoV PLPro also suppressed a constitutively active phosphomimetic IRF3, suggesting its involvement in the postactivation signaling of IRF3
SIGNOR-260246
O75386
Q8N6U8
1
relocalization
up-regulates activity
0.608
Upon knockdown of Tulp3 using siRNA in IMCD3 cells, ciliary localization of Gpr161 was severely reduced
SIGNOR-259938
O15105
O75807
2
binding
up-regulates
0.679
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-121280
P62714
Q13315
1
dephosphorylation
down-regulates activity
0.269
Ionizing radiation induces autophosphorylation of the ataxia-telangiectasia mutated (ATM) protein kinase on serine 1981; however, the precise mechanisms that regulate ATM activation are not fully understood. Here, we show that the protein phosphatase inhibitor okadaic acid (OA) induces autophosphorylation of ATM on serine 1981 in unirradiated cells at concentrations that inhibit protein phosphatase 2A-like activity in vitro.
SIGNOR-248601
Q9Y297
Q9UKB1
2
binding
down-regulates quantity by destabilization
0.591
Glucose deprivation activates AMPK kinase to phosphorylate β-TrCP1 and promotes the subsequent ubiquitination and degradation of β-TrCP1 by β-TrCP2, but does not promote β-TrCP2 degradation by β-TrCP1. 
SIGNOR-277476
Q9NRC8
Q16695
1
deacetylation
up-regulates activity
0.2
Besides confirming the previously reported histone H3K18 deacylation activity, our results revealed that SIRT7 has an astonishingly high activity to catalyze deacylation of H3K36 and is also catalytically active to deacylate H3K37.
SIGNOR-275876
Q9NQU5
P04049
1
phosphorylation
up-regulates activity
0.2
PAK5 phosphorylates Raf-1 on serine 338 and stimulates Raf-1 activity.
SIGNOR-278971
Q02750
Q9Y2X7
2
binding
up-regulates activity
0.391
We found both MAT2B variants interact with GIT1. MAT2B directly promoted binding of GIT1 and ERK2 to MEK1. MAT2B and GIT1 interact and are overexpressed in most human liver and colon cancer specimens.
SIGNOR-261245
Q9P0L9
Q9UQM7
0
phosphorylation
down-regulates activity
0.2
CaM inhibits the function of TRPP3 through promoting CaMK2's phosphorylation towards T591 on TRPP3.
SIGNOR-277812
Q9HCE7
Q15797
1
ubiquitination
down-regulates
0.708
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-195660
O60674
Q5VWQ8
2
binding
down-regulates activity
0.349
In vascular smooth muscle cells (VSMCs) treated with IFN-γ, DAB2IP directly binds to JAK2 and inhibits its kinase activity, limiting JAK-dependent STAT1/3 and PI3K–AKT phosphorylation and activation
SIGNOR-254760
Q8IZQ8
P49841
0
phosphorylation
down-regulates activity
0.397
In vitro and in vivo (HEK 293 cells) kinase assays with synthetic peptides and full-length myocardin demonstrated that myocardin was a primed GSK3beta substrate, with serines 455 to 467 and 624 to 636 being the major GSK3beta phosphorylation sites.  GSK3β phosphorylation at the sites identified inhibits myocardin intrinsic transcriptional activity
SIGNOR-251247
Q969V1
P38405
2
binding
up-regulates activity
0.25
Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. | We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. | The score associated to this interaction has a LogRAi ≥ -1.0.
SIGNOR-256938
O60716
P12830
2
binding
up-regulates quantity by stabilization
0.947
P120 regulates E-cadherin turnover at the cell membrane. Because direct binding of p120 to E-cadherin is required, it is possible that p120 binding blocks the interaction of an unknown binding partner (or event) that targets E-cadherin for degradation
SIGNOR-252123
P01112
Q7Z5G4
0
palmitoylation
up-regulates activity
0.349
Covalent lipid modifications mediate the membrane attachment and biological activity of Ras proteins. All Ras isoforms are farnesylated and carboxyl-methylated at the terminal cysteine; H-Ras and N-Ras are further modified by palmitoylation. Here we report that H- and N-Ras are palmitoylated by a human protein palmitoyltransferase encoded by the ZDHHC9 and GCP16 genes. DHHC9 is an integral membrane protein that contains a DHHC cysteine-rich domain. GCP16 encodes a Golgi-localized membrane protein.
SIGNOR-261351
Q07955
Q96SB4
0
phosphorylation
up-regulates
0.799
These results suggest that the formation of complexes between sf2/asf and srpks, which is influenced by the phosphorylation state of sf2/asf, may have regulatory roles in the assembly and localization of this splicing factor.
SIGNOR-66465
O14920
Q9UKB1
2
binding
down-regulates quantity by destabilization
0.443
We identified a human F-box/WD40 repeats protein (HOS), which is homologous to Slimb/h betaTrCP. Being a part of SCF complex with Skp1 and Cullin1, HOS specifically interacted with the phosphorylated IkappaB and beta-catenin, targeting these proteins for proteasome-dependent degradation in vivo. 
SIGNOR-272544
Q8WUP2
O75369
2
binding
up-regulates activity
0.721
Kindlin binds migfilin tandem LIM domains and regulates migfilin focal adhesion localization and recruitment dynamics. Two integrin-binding proteins present in FAs, kindlin-1 and kindlin-2, are important for integrin activation, FA formation, and signaling. By binding filamin, migfilin provides a link between kindlin and the actin cytoskeleton.
SIGNOR-266106
P06239
Q9UN19
1
phosphorylation
up-regulates activity
0.646
Src family kinases mediate receptor-stimulated, phosphoinositide 3-kinase-dependent, tyrosine phosphorylation of dual adaptor for phosphotyrosine and 3-phosphoinositides-1 in endothelial and B cell lines|yrosine phosphorylation of DAPP-1 appears important for appropriate intracellular targeting and creates a potential binding site for Src homology 2 domain-containing proteins.
SIGNOR-249373
P63096
P32249
2
binding
up-regulates activity
0.418
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-256715
P41182
Q13153
0
phosphorylation
down-regulates activity
0.2
The transcriptional repressor B-cell lymphoma (BCL)-6 downregulates genes involved in cell-cycle progression and becomes inactivated following phosphorylation by the Rac1 GTPase-activated protein kinase PAK1.
SIGNOR-253930
Q92529-2
P12931
0
phosphorylation
up-regulates activity
0.576
We also obtained tryptic phosphopeptide maps of N-Shc protein phosphorylated in vitro by other tyrosine kinases, TrkB, v-Src and EGFR. The overall patterns of the phosphopeptide maps generated by these tyrosine kinases were similar, although there were some differences among these maps (Figure 4a–d).We performed phosphopeptide mapping analysis using GST-fused N-Shc protein, and found that N-Shc phosphorylated by TrkA in vitro was resolved into at least seven phosphopeptides (Y1 through Y7, Figure 4a). Phosphopeptide mapping revealed that N-Shc has novel tyrosine-phosphorylation sites at Y259/Y260 and Y286; in vivo-phosphorylation of these tyrosines was demonstrated by site-specific anti-pTyr antibodies. Phosphorylated Y286 bound to several proteins, of which one was Crk. The pY221/pY222 site, corresponding to one of the Grb2-binding sites of Shc, also preferentially bound to Crk. The phosphorylation-dependent interaction between N-Shc and Crk was demonstrated in vitro and in vivo.
SIGNOR-273921
Q6Q788
P06858
2
binding
up-regulates activity
0.718
Apo A5 binds to and enhances the activity of lipoprotein lipase (LPL) enzyme
SIGNOR-251845
P22415
Q16539
0
phosphorylation
up-regulates activity
0.552
Following uv irradiation, usf-1 is phosphorylated by the p38 stress-activated kinase on threonine 153 and directly up-regulates expression of the pomc, mc1r, tyr, tyrp-1 and dct genes
SIGNOR-185572
Q99677
P09471
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-257258
Q6UWZ7
P38398
2
binding
up-regulates
0.2
Full length abraxas binds the brct-repeats of brca1the rap80-abraxas complex may help recruit brca1 to dna damage sites in part through recognition of ubiquitinated proteins
SIGNOR-155144
Q16539
O75676
1
phosphorylation
up-regulates
0.604
Rskb, a 90-kda ribosomal s6 protein kinase family (rsk) member with two complete catalytic domains connected by a linker, is activated through p38- and erk-mitogen-activated protein kinases. unlike other rsks, the activation loop phosphorylation sites of both catalytic domains of rskb, ser(196) and thr(568), were required for activity. Rskb activation depended on phosphorylation of linker ser(343) and ser(360) and associated with phosphorylation of nonconserved ser(347), but ser(347)-deficient rskb retained partial activity.
SIGNOR-77212
P12931
P11511
1
phosphorylation
up-regulates
0.35
Phosphorylation of the 361-tyrosine residue is crucial in the up-regulation of aromatase activity. c-src protein directly phosphorylates aromatase on tyrosine 361.
SIGNOR-186284
Q9UKC9
O00459
2
binding
down-regulates quantity by destabilization
0.365
FBXL2 binds p85α and p85β. p85β is targeted for ubiquitylation and degradation by SCF FBXL2.
SIGNOR-272111
P49841
Q9UBK2
1
phosphorylation
down-regulates quantity
0.476
GSK3\u03b2 is an important serine/threonine kinase to regulate PPAR\u03b3 coactivator-1\u03b1 degradation. , GSK3\u03b2 reduces PPAR\u03b3 coactivator-1\u03b1 levels by phosphorylating PPAR\u03b3 coactivator-1\u03b1 and subsequently stimulating PPAR\u03b3 coactivator-1\u03b1 degradation by the ubiquitin-proteasomal system.|Within them, GSK3beta, which can phosphorylate PGC-1alpha and promote its ubiquitin mediated degradation , , was upregulated significantly in mnd2 mouse brain and spinal cord compared with that in wide-type mice (XREF_FIG).
SIGNOR-279723
Q9Y4K3
P42336
1
ubiquitination
up-regulates activity
0.458
In contrast to NEDD4L, overexpression of TRAF6 increases the stability of PIK3CA protein and promotes PI3K activation.|TRAF6 ubiquitinates PIK3CA in vivo.
SIGNOR-278727
P32249
Q03113
2
binding
up-regulates activity
0.26
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-257202
P06493
P35251
1
phosphorylation
down-regulates activity
0.245
Phosphorylation of the PCNA binding domain of the large subunit of replication factor C on Thr506 by cyclin-dependent kinases regulates binding to PCNA|Replication factor C (RF-C) complex binds to DNA primers and loads PCNA onto DNA, thereby increasing the processivity of DNA polymerases. |Phosphorylation of either RF-Cp145 as a part of the RF-C complex or RF-Cp145 domain B by cdk-cyclin kinases inhibits their ability to bind PCNA.
SIGNOR-265504
P49841
Q9UBN7
1
phosphorylation
up-regulates activity
0.381
GSK3beta was found to co-localize with HDAC6 in hippocampal neurons, and inhibition of GSK3beta resulted in decreased binding of antibody to phosphoserine-22, a potential GSK3beta phosphorylation site in HDAC6.|This suggests that GSK3\u03b2 may directly phosphorylate HDAC6 at this site, although further work with purified proteins is needed to determine whether this is the case.|The fact that HDAC6 is the predominant cytoplasmic deacetylase in neurons suggests that GSK3beta dependent phosphorylation may enhance HDAC6 activity, resulting in a decrease in acetylation of tubulin and an inhibition of both mitochondrial motility and the transport of other kinesin-1 dependent cargoes.
SIGNOR-278941
Q92993
P46531
1
acetylation
down-regulates
0.414
This result implies that the residues k2019, k2039, k2044, and k2068 of notch1-ic are the major targets of the acetyltransferase activity of tip60.
SIGNOR-156923
Q9Y625
Q15465
2
binding
up-regulates activity
0.451
Based on results from in vitro experiments, we had previously proposed that GPC6 stimulates Hh signaling by interacting with Hh and Patched1 (Ptc1), and facilitating/stabilizing their interaction.
SIGNOR-264029
P42229
P17706
0
dephosphorylation
down-regulates activity
0.733
Upon ligand binding, IL-2R , IL-6R or LeptinR , IFN-_R , IFN-_R and PRLR or growth hormone (GH) receptor associated JAKs become activated. These JAKs mediate phosphorylation of specific tyrosine residues and recruit STATs. Activated STATs are released from the receptor and translocate to the nucleus. PTP1B dephosphorylates JAK2, TYK2 and STAT5 . The 45-kDa form of TC-PTP was shown to dephosphorylate JAK1 and JAK3 as well as STAT1, STAT3 and STAT5.
SIGNOR-133547
Q5T447
Q9UDY8
1
polyubiquitination
up-regulates quantity by stabilization
0.366
HECTD3 promotes MALT1 ubiquitination with nondegradative polyubiquitin chains by direct interacting with the MALT1 through its N-terminal destruction of cyclin domain. HECTD3 does not target MALT1 for degradation but stabilize it. 
SIGNOR-272096
P08754
P28336
2
binding
up-regulates activity
0.268
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-257160
P80370
P02751
2
binding
up-regulates
0.37
We show a direct interaction of pref-1 and fibronectin via the pref-1 juxtamembrane domain and fibronectin c-terminal domain
SIGNOR-165347
Q86TM6
Q9UBU6
2
binding
up-regulates activity
0.577
FAM8A1 enhances binding of Herp to Hrd1, an interaction that is required for ERAD. Our findings support a model of Hrd1 complex formation, where the Hrd1 cytoplasmic domain and FAM8A1 have a central role in the assembly and activity of this ERAD machinery. A conserved Hrd1 cytoplasmic domain interacts with FAM8A1 and Herp
SIGNOR-261348
Q9UQD0
P0DP23
2
binding
down-regulates activity
0.451
Here we show that calmodulin (CaM), a ubiquitous Ca2+-sensing protein, binds to the carboxy-terminal 'IQ' domain of the human cardiac Na channel (hH1) in a Ca2+-dependent manner. This binding interaction significantly enhances slow inactivation-a channel-gating process linked to life-threatening idiopathic ventricular arrhythmias.
SIGNOR-253410
Q96LB1
P38405
2
binding
up-regulates activity
0.2
Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. | We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. | The score associated to this interaction has a LogRAi ≥ -1.0.
SIGNOR-256930
P54756
O00712
0
transcriptional regulation
up-regulates quantity
0.2
For example, within the NFI targetome, we identified 6 collagen genes, 13 genes encoding potassium channel or glutamate receptor subunits and a range of factors related to axon guidance (e.g. Slit1, Robo1, Epha4, Epha5, Epha8)
SIGNOR-268902
Q9UD71
P19784
0
phosphorylation
up-regulates activity
0.375
Study of [Plphosphate release during manual Edman degradation confirmed that the phosphorylated residues in rat DARPP-32 were Ser45 and Ser102. | Phosphorylation by casein kinase II did not affect the potency of DARPP-32 as an inhibitor of protein phosphatase-1, which depended only on phosphorylation of Thr34 by cAMP-dependent protein kinase. However, phosphorylation of DARPP-32 by casein kinase II facilitated phosphorylation of Thr34 by cAMP-dependent protein kinase
SIGNOR-251018
Q96JC9
P55199
2
binding
up-regulates
0.847
Positive regulation of ell elongation activity depends on stable binding of eaf1 to the ell n terminus
SIGNOR-138516
P23771
Q9UI32
1
transcriptional regulation
up-regulates quantity by expression
0.332
Thus, GATA3 contributes to the elevated expression of GLS2 in luminal-subtype breast cancers.
SIGNOR-268034
Q05655
Q13541
1
phosphorylation
down-regulates activity
0.2
As shown for serum, phosphorylation of 4E-BP1 by PKCdelta inhibits the interaction between 4E-BP1 and eIF4E and stimulates cap-dependent translation.|Here we demonstrate that protein kinase Cdelta (PKCdelta) associates with RAFT1 and that PKCdelta is required for the phosphorylation and inactivation of 4E-BP1.
SIGNOR-279100
P19474
Q02556
1
ubiquitination
down-regulates quantity
0.638
From these results, we concluded that TRIM21 down-regulated IRF8 and enhanced the secretion of IL-12/23p40 in BD monocytes.|IRF8 is ubiquitinated by TRIM21, which promotes secretion of IL-12/23p40 after TLR/IFN-\u03b3 stimulation xref .
SIGNOR-278791
Q13936
Q15139
0
phosphorylation
up-regulates
0.255
Both the expression of a dominant-negative mutant of pkd and the mutation of serine 1884 but not serine 1930, putative targets of pkd, strongly reduced l-type calcium currents and single channel activity without affecting the channel's expression at the plasma membrane. Our results suggest that serine 1884 is essential for the regulation of hcav1.2 by pkd.
SIGNOR-177481
P67775
P06400
1
dephosphorylation
up-regulates
0.505
This dephosphorylation returns prb to its active, growth suppressive state.
SIGNOR-75398
Q9HB75
Q13315
0
phosphorylation
up-regulates activity
0.636
ATM phosphorylates PIDD on Thr788 within the DD. This phosphorylation is necessary and sufficient for RAIDD binding and caspase-2 activation. Conversely, nonphosphorylatable PIDD fails to bind RAIDD or activate caspase-2, and engages prosurvival RIP1 instead. Thus, ATM phosphorylation of the PIDD DD enables a binary switch through which cells elect to survive or die upon DNA injury.
SIGNOR-262640
P45983
P05412
1
phosphorylation
up-regulates activity
0.907
JNK1 binds to the c-Jun transactivation domain and phosphorylates it on Ser-63 and Ser-73. The effect on AP-1 transcriptional activity results, in part, from enhanced phosphorylation of the c-Jun NH2-terminal activation domain.
SIGNOR-250122
P26583
P09086
2
binding
up-regulates activity
0.32
HMG2 and Oct2 interact via their HMG domains and POU homeodomains, respectively. This interaction is not restricted to Oct2, as other members of the octamer transcription factor family like Oct1 and Oct6 also interact with HMG2. The interaction with HMG2 results in a marked increase in the sequence-specific DNA binding activity of the Oct proteins
SIGNOR-240108
P62805
Q58F21
1
relocalization
up-regulates activity
0.2
BRDT interacts with acetylated nucleosomes via its BD1 domain. Binding may be initiated through non-specific interactions with DNA, which allow BRDT to localize to chromatin. Specificity is generated through recognition of tandem acetylated lysine residues (K5ac/K8ac) on the histone H4 tail,
SIGNOR-262066
Q96JA1
P00533
2
binding
down-regulates
0.736
Upregulation of lrig1 is followed by enhanced ubiquitylation and degradation of egfr. The underlying mechanism involves recruitment of c-cbl, an e3 ubiquitin ligase that simultaneously ubiquitylates egfr and lrig1 and sorts them for degradation
SIGNOR-127304
P50548
P28482
0
phosphorylation
up-regulates
0.596
The experiments presented here indicate that erf is regulated during nuclear import and/or export and that this process depends on its phosphorylation by erks our analysis indicates that in addition to t526 (position 7), s161 (position 2), s246 (position 3), and s251 (position 4) are also phosphorylated in vitro by erk2 and in vivo after mitogenic stimulation (fig. 3a).
SIGNOR-67524
P01574
Q13526
0
transcriptional regulation
down-regulates quantity by repression
0.2
To investigate the temporal regulation of IRF3-dependent transcription by Pin1, we used a rapid-response luciferase reporter gene. Real-time reporter gene assays showed that suppression of endogenous Pin1 expression substantially prolonged both IRF3-dependent transcription and IFN-beta promoter activation after poly(I)dotpoly(C) stimulation (Fig. 4c,d). Consistent with the inhibitory effects of Pin1 on the IFN-beta promoter
SIGNOR-252289
Q9NUX5
P15927
2
binding
down-regulates activity
0.407
The current model for how telomeres repress ATR signaling proposes that POT1/TPP1 prevents the binding of RPA to the single-stranded telomeric DNA
SIGNOR-263324
P46527
Q13315
0
phosphorylation
up-regulates quantity by stabilization
0.419
We also uncovered that ATM phosphorylates p27Kip1 on a previously uncharacterized residue (Ser-140), which leads to its stabilization after induction of DNA double-strand breaks.
SIGNOR-279392
P18433
Q9H267
1
dephosphorylation
down-regulates activity
0.2
Here, we report that VPS33B, a host protein involved in vesicle trafficking, is dephosphorylated by PtpA leading to a block of phagosome maturation by M. tuberculosis.|These data suggest that M. tuberculosis PtpA inhibits phagosome maturation.To assess the role of VPS33B in phagosome maturation, we attenuated the expression of endogenous VPS33B expression in THP-1 cells using a siRNA based approach.
SIGNOR-277015
P19793
Q03181
2
binding
up-regulates
0.582
Although the three ppar subtypes are closely related and bind to similar dna response elements as heterodimers with the 9-cis retinoic acid receptor rxr, each subserves a distinct physiology
SIGNOR-105442