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Q92913
Q99250
1
binding
down-regulates activity
0.269
Sodium channel fast inactivation is modulated by alpha subunit interaction with a family of cytoplasmic proteins termed fibroblast growth factor homologous factors (FHFs). In this paper, we report that all A-type FHFs exert rapid onset long-term inactivation on Nav1.6 and other sodium channels.
SIGNOR-253427
P36873
O15169
1
dephosphorylation
down-regulates activity
0.269
The data suggest that PP1 controls Wnt signaling through interaction with, and regulated dephosphorylation of, axin| Axin phosphorylation markedly enhances the binding of glycogen synthase kinase 3, leading to a more active beta-catenin destruction complex. Wnt-regulated changes in axin phosphorylation, mediated by PP1, may therefore determine beta-catenin transcriptional activity| Four sites, S80, S82, S222, and S473, were identified to be PP1 regulated
SIGNOR-248494
P53350
Q9Y6K1
1
phosphorylation
down-regulates activity
0.269
2.11 Plk1 Directly Phosphorylates DNMT3a at S393.|Elevated Plk1 further inhibited DNMT3a via phosphorylation at S393 in mitosis in accord with its mitotic role during cell cycle.
SIGNOR-279552
Q16539
Q15672
1
phosphorylation
up-regulates
0.269
Phosphorylation of serine 68 of twist1 by mapks stabilizes twist1 protein and promotes breast cancer cell invasiveness. this ser 68 is phosphorylated by p38, c-jun n-terminal kinases (jnk), and extracellular signal-regulated kinases1/2 in vitro
SIGNOR-173409
P35813
P46937
1
dephosphorylation
up-regulates activity
0.269
Although the authors show an in vitro kinase assay where PPM1A supposedly dephosphorylates YAP on Ser127, Fig. 4A lacks a positive control to ensure that PPM1A purified from cells is active.|The protein phosphatase PPM1A dephosphorylates and activates YAP to govern mammalian intestinal and liver regeneration.
SIGNOR-276984
O14641
Q06330
1
binding
down-regulates activity
0.269
Mechanistically, Dishevelled binds and directly inhibits CSL transcription factors downstream of Notch receptors, reducing their activity. Furthermore, our data suggest that this crosstalk mechanism is conserved between vertebrate and invertebrate homologues. Thus, we identify a dual function for Dishevelled as an inhibitor of Notch signalling and an activator of the Wnt pathway that sharpens the distinction between opposing Wnt and Notch responses, allowing for robust cell-fate decisions.
SIGNOR-243999
Q8WXX7
Q96JJ3
1
binding
up-regulates activity
0.269
Mutations in the Autism susceptibility candidate 2 gene (AUTS2), whose protein is believed to act in neuronal cell nuclei, have been associated with multiple psychiatric illnesses, including autism spectrum disorders, intellectual disability, and schizophrenia. Here we show that cytoplasmic AUTS2 is involved in the regulation of the cytoskeleton and neural development.  AUTS2 activates Rac1 to induce lamellipodia but downregulates Cdc42 to suppress filopodia. Our loss-of-function and rescue experiments show that a cytoplasmic AUTS2-Rac1 pathway is involved in cortical neuronal migration and neuritogenesis in the developing brain. These results suggest that FL-AUTS2 can activate Rac1 via interaction with P-Rex1 and the Elmo2/Dock180 complex to regulate actin dynamics in N1E-115 cells.
SIGNOR-266819
Q9Y5X3
P08069
1
binding
down-regulates quantity
0.269
Here, we discovered that the binding between SNX-BARs and CI-MPR or IGF1R is mediated by the phox-homology (PX) domain of SNX5 or SNX6 and a bipartite motif, termed SNX-BAR-binding motif (SBM), in the cargoes. our studies establish that SNX-BARs function as a direct cargo-selecting module for a large set of transmembrane proteins transiting the endosome, in addition to their roles in phospholipid recognition and biogenesis of tubular structures.
SIGNOR-269444
P30518
P38405
1
binding
up-regulates activity
0.269
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-256897
Q9C029
Q5TA31
1
ubiquitination
up-regulates quantity by stabilization
0.269
Taken together, these data suggest that Trim7 directly ubiquitinates RACO-1.
SIGNOR-278536
Q05655
P35222
1
phosphorylation
down-regulates activity
0.269
Moreover, protein kinase Cδ, which directly phosphorylates β-catenin at Ser715, is required for the TRIM33–β-catenin interaction. | Phosphorylation of β-catenin Ser715 is critical for TRIM33-induced β-catenin degradation
SIGNOR-260897
Q05655
P52757
1
phosphorylation
down-regulates
0.269
A novel cross-talk in diacylglycerol signaling: the rac-gap beta2-chimaerin is negatively regulated by protein kinase cdelta-mediated phosphorylation. phosphorylation of beta2-chimaerin on ser(169) located in the sh2-c1 domain linker region via protein kinase cdelta, which retained beta2-chimaerin in the cytosol and prevented its c1 domain-mediated translocation to membranes
SIGNOR-164687
P04150
O15534
1
transcriptional regulation
up-regulates quantity by expression
0.268
GR directly regulates transcription of circadian clock components in mouse and human primary MSCs. Per2, E4bp4, Per1, and Timeless rapidly respond to glucocorticoid stimulation. Primary glucocorticoid receptor (GR) target genes are those at which GR occupies a nearby genomic glucocorticoid response element (GRE) and regulates target gene transcription
SIGNOR-268050
P36776
P49675
1
cleavage
down-regulates quantity by destabilization
0.268
Turnover of mitochondrial steroidogenic acute regulatory (StAR) protein by Lon protease: the unexpected effect of proteasome inhibitors
SIGNOR-265726
P30550
P09471
1
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-257247
P28482
Q07343-2
1
phosphorylation
up-regulates activity
0.268
The short-form PDE4B2 isoenzyme was activated by Erk2 phosphorylation. These functional changes in PDE activity were mimicked by mutation of the target serine for Erk2 phosphorylation to the negatively charged amino acid, aspartic acid.
SIGNOR-275971
P46934
Q12809
1
ubiquitination
down-regulates quantity by destabilization
0.268
We have previously shown that the E3 ubiquitin (Ub) ligase Nedd4-2 (neural precursor cell expressed developmentally down-regulated protein 4-2) targets the PY motif of hERG channels to initiate channel degradation. Although both immature and mature hERG channels contain the PY motif, Nedd4-2 selectively mediates the degradation of mature hERG channels.
SIGNOR-260998
P34947
P50502
1
phosphorylation
up-regulates activity
0.268
An in vitro screen for novel GRK substrates revealed Hsp70 interacting protein (Hip) as a substrate. GRK5, but not GRK2, bound to and stoichiometrically phosphorylated Hip in vitro. The primary binding domain of GRK5 was mapped to residues 303-319 on Hip, while the major site of phosphorylation was identified to be Ser-346. GRK5 also bound to and phosphorylated Hip on Ser-346 in cells.we found that the phosphorylation of Ser-346 was required for proper agonist-induced internalization of the chemokine receptor CXCR4.
SIGNOR-262877
Q5SQI0
Q71U36
1
acetylation
up-regulates quantity by stabilization
0.268
Alpha-Tubulin acetyltransferase (alphaTAT1) is the major α-tubulin lysine-40 (K40) acetyltransferase in mammals, nematodes, and protozoa, and its activity plays a conserved role in several microtubule-based processes.|The tubulin subunits of microtubules are acetylated, and lysine-40 (K40) of the alpha-tubulin subunit has been identified as an important conserved site of microtubule acetylation (6–8). This modification is considered a hallmark of stable, long-lived microtubules
SIGNOR-272251
P06493
O43280
1
phosphorylation
up-regulates activity
0.268
Ewald et al. reported that at the G1/S transition, cyclin-dependent kinase 1 (CDK1) phosphorylates and activates the neutral trehalase (NTH1) to funnel trehalose into glycolysis (Ewald et al. xref ).
SIGNOR-280206
Q13107
Q7Z569
1
deubiquitination
up-regulates quantity by stabilization
0.268
Here we report on a novel interaction between the E3 ligase BRAP (also referred to as IMP), a negative regulator of the MAPK scaffold protein KSR, and two closely related deubiquitylases, USP15 and USP4. USP15 as well as USP4 oppose the autoubiquitylation of BRAP, whereas BRAP promotes the ubiquitylation of USP15.
SIGNOR-272031
P45983
Q13043
1
phosphorylation
up-regulates
0.268
C-jun n-terminal kinase enhances mst1-mediated pro-apoptotic signaling through phosphorylation at serine 82.
SIGNOR-162327
P49841
Q02156
2
phosphorylation
up-regulates
0.268
Specifically, we have identified three phosphorylation sites within pkcepsilon that control its association with 14-3-3.kinase (ser 350), gsk3 (ser 346) and pkc itself (ser 368)
SIGNOR-179412
P49674
Q9UJU2
1
phosphorylation
down-regulates
0.268
Here, we identify ck1 and ck2 as major kinases that directly bind to and phosphorylate lef-1 inducing distinct, kinase-specific changes in the lef-1/dna complex.CK1-dependent phosphorylation inhibits, whereas ck2 activates lef-1/beta-catenin transcriptional activity in reporter gene assays.
SIGNOR-134497
O14641
Q9NQ66
1
null
up-regulates activity
0.268
Dsh through PLC activates IP3, which leads to release of intracellular Ca2+, which in turn activates CamK11 and calcineurin
SIGNOR-258979
P51452
P04626
1
dephosphorylation
down-regulates activity
0.268
Expression of VHR inhibited the activation of phospholipase Cγ and protein kinase C, both downstream effectors of Tyr-992 phosphorylation of EGFR. | We found that VHR decreased ErbB2 phosphorylation in vitro and in a cellular context, and the dephosphorylation of ErbB2 was more evident at Tyr-877 and Tyr-1221 than those at Tyr-1139 and Tyr-1248 (supplemental Fig. S1). Our data indicated that VHR was a cellular PTP against EGFR and ErbB2.
SIGNOR-248533
Q13177
P05412
1
phosphorylation
up-regulates
0.268
P21-activated protein kinase (pak2)-mediated c-jun phosphorylation at 5 threonine sites promotes cell transformationour data showed that pak2 binds and phosphorylates c-jun at five threonine sites (thr2, thr8, thr89, thr93 and thr286)
SIGNOR-170772
P27361
Q15788
1
phosphorylation
up-regulates
0.268
Mapk also directly phosphorylates src-1 at thr1179 and ser1185. Phosphorylation of src-1 by mitogen-activated protein kinase (mapk) is required for optimal progesterone receptor-dependent transcription and for functional cooperation with camp response element-binding protein-binding protein
SIGNOR-91143
Q6NYC1
Q7L2J0
1
cleavage
down-regulates activity
0.268
JMJD6 cleaves MePCE. we propose that JMJD6 is the cognate protease of MePCE and cleaves at the R171 site within MePCE. Experiments using purified JMJD6 showed that it could make a cut in an enzyme called MePCE, which belongs to the group of proteins that hold P-TEFb in its inactive form. The levels of activated Pol II were lower in cells without JMJD6 and higher in those without MePCE. Together, the results suggest that JMJD6 cuts MePCE to release P-TEFb, which then activates Pol II.
SIGNOR-261037
Q13049
Q01860
1
ubiquitination
down-regulates quantity by destabilization
0.268
This further supports that TRIM32 and Oct4 do physically interact, so that TRIM32 can specifically ubiquitinate Oct4 and thereby target it for degradation.
SIGNOR-278620
Q9GZQ4
P19086
1
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-257126
Q9H4B4
P11388
1
phosphorylation
up-regulates
0.268
The direct phosphorylation of thr(1342) of topoisomerase iialpha by plk3 was demonstrated with an in vitro kinase assay, and overexpression of plk3 induced the phosphorylation of thr(1342) in cellular topoisomerase iialpha. it is possible that plk3 regulates the activity of topoisomerase iia by phosphorylation in a cell-cycle dependent manner. Another possibility is that plk3 regulates the activity of topoisomerase iia when the checkpoint is activated.
SIGNOR-159596
P00519
Q9P0J1
1
phosphorylation
down-regulates activity
0.268
Here we report that phosphorylation at another tyrosine residue, Tyr-94, inhibits PDP1 by reducing the binding ability of PDP1 to lipoic acid, which is covalently attached to the L2 domain of dihydrolipoyl acetyltransferase (E2) to recruit PDP1 to PDC. We found that multiple oncogenic tyrosine kinases directly phosphorylated PDP1 at Tyr-94, and Tyr-94 phosphorylation of PDP1 was common in diverse human cancer cells and primary leukemia cells from patients. 
SIGNOR-276641
P28336
P09471
1
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-257248
P33032
O95837
1
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-257393
Q9NZJ5
P78352
1
phosphorylation
up-regulates activity
0.268
To elucidate the molecular mechanism, we found that activated PERK phosphorylates CAMP response element binding protein (CREB) and PSD95 directly at the S129 and T19 residues, respectively.
SIGNOR-280004
P28336
P08754
1
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
Q92973
O15534
1
relocalization
up-regulates activity
0.268
The non-classical nuclear import carrier Transportin 1 modulates circadian rhythms through its effect on PER1 nuclear localization
SIGNOR-262102
Q96J02
Q8NFZ5
1
ubiquitination
down-regulates
0.268
Here we show that tnfa-mediated jnk activation accelerates turnover of the NF-kappaBinduced antiapoptotic protein c-flip, an inhibitor of caspase-8. This is not due to direct c-flip phosphorylation but depends on jnk-mediated phosphorylation and activationof the e3ubiquitin ligaseitch, which speci?cally Ubiquitinates c-flip and induces its proteasomal degradation.
SIGNOR-144453
Q05513
P10636-2
1
phosphorylation
down-regulates activity
0.268
We have studied the relationship between the phosphorylation oftau by several kinases (MARK, PKA, MAPK, GSK3) and its assembly into PHFs. By contrast, MARK and PKA phosphorylate several sites within the repeats (notably theKXGS motifs including Ser262, Ser324, and Ser356, plus Ser320); in addition PKA phosphorylates somesites in the flanking domains, notably Ser214. This type of phosphorylation strongly reduces tau’s affinityfor microtubules, and at the same time inhibits tau’s assembly into PHFs.
SIGNOR-275447
P28336
P63096
1
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-257047
P49910
Q9HAU4
1
transcriptional regulation
down-regulates quantity by repression
0.268
ZNF165 drives the unrestrained activation of transforming growth factor β (TGFβ) signalling by directly inactivating the expression of negative feedback pathway regulators, SMURF2, SMAD7 and PMEPA1.
SIGNOR-266095
P30550
P63096
1
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-257046
P28482
Q07343
1
phosphorylation
up-regulates activity
0.268
The short-form PDE4B2 isoenzyme was activated by Erk2 phosphorylation. These functional changes in PDE activity were mimicked by mutation of the target serine for Erk2 phosphorylation to the negatively charged amino acid, aspartic acid.
SIGNOR-275970
P25054
P11926
1
transcriptional regulation
down-regulates quantity by repression
0.268
APC-dependent regulation of ornithine decarboxylase in human colon tumor cells|Upon induction of APC expression, ODC promoter activity and RNA levels were suppressed
SIGNOR-253670
Q02156
P49841
2
phosphorylation
down-regulates activity
0.268
However, PKCepsilon and Akt can also phosphorylate GSK3beta directly.
SIGNOR-279101
O60674
P20701
1
phosphorylation
up-regulates activity
0.268
PTKs of the JAK and SRC families have a regulatory role in LFA-1 affinity triggering, with JAKs showing a positive role (3), whereas SRCs possibly have a negative role.
SIGNOR-254739
O43474
O14770
1
binding
up-regulates activity
0.268
We show that the Pbx1 and Meis2 homeodomain proteins interact with Klf4 and can be recruited to DNA elements comprising a Klf4 site or G C box, with adjacent Meis and Pbx sites. Meis2d and Pbx1a activate expression of p15(Ink4a) and E-cadherin, dependent on the Meis2d transcriptional activation domain. We suggest a model in which genes with Klf4 sites can be cooperatively activated by Meis2/Pbx1 and Klf4, dependent primarily on recruitment by Klf4.
SIGNOR-267238
P28223
P08754
1
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-256885
P49674
Q01974
1
phosphorylation
up-regulates
0.268
We also show that ror2 is phosphorylated by ckiepsilon on serine/threonine residues.
SIGNOR-129117
P30550
P08754
1
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-257159
P00519
Q13588
1
binding
up-regulates
0.267
We show that the grb2-related adapter protein, gads, also associates with bcr-abl, specifically through y177 and demonstrate that bcr-abl-driven lymphoid disease requires gads
SIGNOR-200871
Q96AQ6
P40425
1
binding
down-regulates activity
0.267
This protein that we have termed hematopoietic PBX-interacting protein (HPIP) is mainly localized in the cytosol and in small amounts in the nucleus. The region of PBX that interacts with HPIP includes both the homeodomain and immediate N-terminal flanking sequences. Strikingly, electrophoretic mobility shift assays revealed that HPIP inhibits the ability of PBX-HOX heterodimers to bind to target sequences. 
SIGNOR-273667
Q13153
P10398
1
phosphorylation
up-regulates
0.267
Phosphorylation of endogenous a-raf, b-raf and raf-1 on the homologous pak phosphorylation sites (serine 299, serine 445, or serine 338 respectively)we found that the phosphorylation of a-raf on serine 299 was also stimulated by egf, although the duration of phosphorylation on this site was much shorter than for raf-1. Thus, by analogy with raf-1, phosphorylation of this site may play an important role in the a-raf activation mechanism.
SIGNOR-236342
P55895
P42345
1
relocalization
up-regulates
0.267
Rag gtpases, together with a multi-protein complex called ragulator, mediate amino acid-mediated mtor recruitment to the lysosome surface where mtor becomes activated.
SIGNOR-198245
P31751
Q13835
1
phosphorylation
up-regulates quantity by stabilization
0.267
Akt2 phosphorylates PKP1 in vitro. Phosphorylated PKP1 is more resistant to degradation. PKP1 phosphorylation sites identified by peptide microarray analyses and mass spectrometry.
SIGNOR-273494
Q13131
P46527
1
phosphorylation
up-regulates quantity by stabilization
0.267
P27Kip1-Mediated Cell Survival Is Dependent on AMPK-Specific Thr198 Phosphorylation|AMPK-dependent phosphorylation of p27Kip1 on Thr198 promotes p27Kip1 protein stability, resulting in more autophagy and less apoptosis.
SIGNOR-259859
Q99835
Q13009
1
binding
up-regulates
0.267
This latter work suggested that inactive smo prevents rac1 activation by interacting with the rac guanine nucleotide exchange factor (gef) t-lymphoma invasion and metastasis 1 (tiam1). This smo-tiam1 complex dissociates upon shh-mediated activation of smo, thus allowing tiam1 to activate rac1
SIGNOR-199192
P30989
P63096
1
binding
up-regulates activity
0.267
Altogether, these results reveal for the first time the ability of hNTS1 to directly activate the Gαq-, Gαi1-, GαoA-, and Gα13-mediated signaling pathways
SIGNOR-278059
Q13148
P49841
1
post transcriptional regulation
down-regulates quantity by repression
0.267
Importantly, we found that TDP-43 protein could interact with GSK3β mRNA and regulate the level of GSK3β protein translation. Taken together, our findings suggest that TDP-43 may activate the Wnt/β-catenin pathway by targeting the inhibition of GSK3β protein translation|TDP-43 activates Wnt/β-catenin pathway probably by inhibiting the GSK3β protein translation. A. Interaction between TDP-43 protein and GSK3β mRNA was analyzed using RIP assay.
SIGNOR-262113
O15550
P31276
1
transcriptional regulation
up-regulates quantity by expression
0.267
Evidence for direct involvement of UTX in regulation of HOX gene activity was demonstrated through UTX knockdown experiments in HEK293T cells in which loss of UTX induced transcriptional repression of HOXA and HOXC clusters.
SIGNOR-260027
Q15349
P25963
1
phosphorylation
down-regulates
0.267
Rsk2 is activated by treatment with tumor necrosis factor-alfa (tnf-alfa) and directly phosphorylates ikbalfa at ser-32, leading to ikbalfa degradation.
SIGNOR-164790
P05549
P35318
1
transcriptional regulation
up-regulates quantity by expression
0.267
These findings suggest that NF-IL6 and AP-2 sites in the promoter region are the functional elements in the transcriptional regulation of human AM gene in vascular endothelial cells.
SIGNOR-254048
P16220
Q92911
1
transcriptional regulation
up-regulates quantity by expression
0.267
CREB recognized and bound to the promoter of SLC5A5 to facilitate its transcription.
SIGNOR-267137
P51812
P07101
1
phosphorylation
up-regulates
0.267
Mitogen-activated protein-kinase (map) kinase-activated protein kinases 1 and 2 (mapkap kinase-1, mapkap kinase-2), were found to phosphorylate bacterially expressed human tyrosine hydroxylaserecombinant human tyrosine hydroxylase (hth1) was found to be phosphorylated by mitogen and stress-activated protein kinase 1 (msk1) at ser40 and by p38 regulated/activated kinase (prak) on ser19. Phosphorylation by msk1 induced an increase in vmax
SIGNOR-34682
Q9H3Y6
Q13451
1
phosphorylation
down-regulates quantity by destabilization
0.267
SRMS binds FKBP51 and phosphorylates tyrosine 54. Under nutrient-replete conditions, SRMS phosphorylates the PHLPP scaffold FK506-binding protein 51 (FKBP51), disrupts the FKBP51-PHLPP complex, and promotes FKBP51 degradation through the ubiquitin-proteasome pathway.
SIGNOR-277564
P48729
Q9H6E5
1
phosphorylation
up-regulates activity
0.267
We identified a phosphorylated residue (serine 6, S6) on Star-PAP in the zinc finger region, the domain required for PIPKIα interaction. We show that S6 is phosphorylated by CKIα within the nucleus which is required for Star-PAP nuclear retention and interaction with PIPKIα. 
SIGNOR-273619
Q8TBB1
P11274
1
ubiquitination
down-regulates quantity by destabilization
0.267
We used the Ligand of Numb protein X (LNX) family of E3s, a group of PDZ domain-containing RING-type E3 ubiquitin ligases, to demonstrate the feasibility of this strategy. Many potential substrates of LNX E3s were identified. Eight of the nine selected candidates were ubiquitinated in vitro, and two novel endogenous substrates, PDZ-binding kinase (PBK) and breakpoint cluster region protein (BCR), were confirmed in vivo.
SIGNOR-272903
P12931
P31040
1
phosphorylation
up-regulates activity
0.267
Phosphorylation-site analysis selects c-Src targets, including NDUFV2 (NADH dehydrogenase [ubiquinone] flavoprotein 2) at Tyr(193) of respiratory complex I and SDHA (succinate dehydrogenase A) at Tyr(215) of complex II. The phosphorylation of these sites by c-Src is supported by an in vivo assay using cells expressing their phosphorylation-defective mutants. 
SIGNOR-276420
P47901
P08754
1
binding
up-regulates activity
0.267
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-257176
P24530
P38405
1
binding
up-regulates activity
0.267
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-256924
O15550
P31260
1
transcriptional regulation
up-regulates quantity by expression
0.267
Evidence for direct involvement of UTX in regulation of HOX gene activity was demonstrated through UTX knockdown experiments in HEK293T cells in which loss of UTX induced transcriptional repression of HOXA and HOXC clusters.
SIGNOR-260020
P24941
P05067
1
phosphorylation
down-regulates quantity by destabilization
0.267
These include a significant increase in APP phosphorylation at Thr 668 by cdk2, cdk4, and cdk5, which increases its beta-amyloid production and APP proteolysis by the activated caspases during cell cycle ( xref ; xref ; xref ; xref ).
SIGNOR-280210
P32239
P08754
1
binding
up-regulates activity
0.267
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-257150
P23467
P29474
1
dephosphorylation
down-regulates activity
0.267
VE-PTP interacts with eNOS and dephosphorylates Tyr81
SIGNOR-277521
Q12778
P15884
1
binding
down-regulates activity
0.267
Here we show that the beta-catenin binding to FOXO serves a dual effect. beta-catenin, through binding, enhances FOXO transcriptional activity. In addition, FOXO competes with TCF for interaction with beta-catenin, thereby inhibiting TCF transcriptional activity.
SIGNOR-262529
P40424
P12830
1
transcriptional regulation
up-regulates quantity by expression
0.267
We show that the Pbx1 and Meis2 homeodomain proteins interact with Klf4 and can be recruited to DNA elements comprising a Klf4 site or G C box, with adjacent Meis and Pbx sites. Meis2d and Pbx1a activate expression of p15(Ink4a) and E-cadherin, dependent on the Meis2d transcriptional activation domain. We suggest a model in which genes with Klf4 sites can be cooperatively activated by Meis2/Pbx1 and Klf4, dependent primarily on recruitment by Klf4.
SIGNOR-267241
P51608
O43395
1
binding
up-regulates activity
0.267
MeCP2 interacts directly with Prpf3 and Sdccag1|Notably, Mecp2308/Y mice, which produce a truncated form of MeCP2 and reproduce many of the classical features of RTT [43], have been shown to have multiple genes that are abnormally spliced in the brain [23]. This suggests the C-terminal portion of MeCP2, which we have identified as the putative Sdccag1 interaction domain, plays a critical role in regulating alternative splicing.
SIGNOR-277691
Q68DV7
P12830
1
ubiquitination
down-regulates quantity by destabilization
0.267
To identify the E-cadherin ubiquitination site, we individually mutated three lysines in its cytoplasmic domain, including K816A, K855A, and K871A, of which E-cad K816A failed to restore E-cadherin ubiquitination (Additional file xref : Figure S3D), indicating that RNF43 ubiquitinated E-cadherin at the cytoplasmic lysine 816.|Together , these results suggest that RNF43 potentially downregulates E-cadherin in lung adenocarcinoma in the context of c-Src activation .
SIGNOR-278598
P27361
Q86UR1
1
phosphorylation
down-regulates
0.267
Accumulating evidence indicates that protein phosphorylation regulates nox activity. In this report, we show that serine282 residue of nox activator 1 (noxa1) is phosphorylated by erk in response to egf resulting in desensitization of nox1 activity
SIGNOR-164231
P12931
Q9UL51
1
phosphorylation
up-regulates activity
0.267
We identified a highly conserved tyrosine residue in the C-linker of HCN channels (Tyr476 in HCN2) that confers modulation by Src. Replacement of this tyrosine by phenylalanine in HCN2 or HCN4 abolished sensitivity to Src inhibitors. Mass spectrometry confirmed that Tyr476 is phosphorylated by Src. Our results have functional implications for HCN channel gating. Furthermore, they indicate that tyrosine phosphorylation contributes in vivo to the fine tuning of HCN channel activity.
SIGNOR-263199
Q7Z569
Q9Y4E8
2
ubiquitination
down-regulates quantity by destabilization
0.267
Here we report on a novel interaction between the E3 ligase BRAP (also referred to as IMP), a negative regulator of the MAPK scaffold protein KSR, and two closely related deubiquitylases, USP15 and USP4. USP15 as well as USP4 oppose the autoubiquitylation of BRAP, whereas BRAP promotes the ubiquitylation of USP15.
SIGNOR-272029
Q13627
P13807
1
phosphorylation
down-regulates activity
0.267
DYRK Family Protein Kinases Phosphorylate and Inactivate Glycogen Synthase. both protein kinases phosphorylate site 3a but no other sites that affect glycogen synthase activity.
SIGNOR-260632
Q9H3Y6
Q02790
1
phosphorylation
down-regulates activity
0.267
Together, these data indicate that SRMS inhibits the scaffolding function of its endogenous substrate FKBP51, thus antagonizing FKBP51-dependent inactivation of AKT (S4E Fig).|We demonstrate that SRMS phosphorylates FKBP51 to inhibit its scaffolding activity and promote its degradation through the ubiquitin-proteasome pathway.
SIGNOR-279764
Q13309
Q5VWQ8
1
ubiquitination
down-regulates quantity by destabilization
0.267
DAB2IP protein levels can be negatively regulated by the activity of the E3-ubiquitin ligases Fbw7, Skp2, and Smurf1
SIGNOR-254775
Q5SQI0
Q6PEY2
1
acetylation
up-regulates quantity by stabilization
0.267
Alpha-Tubulin acetyltransferase (alphaTAT1) is the major α-tubulin lysine-40 (K40) acetyltransferase in mammals, nematodes, and protozoa, and its activity plays a conserved role in several microtubule-based processes.|The tubulin subunits of microtubules are acetylated, and lysine-40 (K40) of the alpha-tubulin subunit has been identified as an important conserved site of microtubule acetylation (6–8). This modification is considered a hallmark of stable, long-lived microtubules
SIGNOR-272248
P53350
P35568
1
phosphorylation
down-regulates activity
0.267
Phosphorylation of ser24 in the pleckstrin homology domain of insulin receptor substrate-1 by mouse pelle-like kinase/interleukin-1 receptor-associated kinase| irs-1 mutants s24d or s24e (mimicking phosphorylation at ser(24)) had impaired ability to associate with insulin receptors resulting in diminished tyrosine phosphorylation of irs-1 and impaired ability of irs-1 to bind and activate pi-3 kinase in response to insulin.
SIGNOR-135688
P47901
P63096
1
binding
up-regulates activity
0.267
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-257063
Q14680
O15530
1
phosphorylation
down-regulates activity
0.267
The results showed that MPK38 interacted with and inhibited PDK1 activity via Thr(354) phosphorylation. 
SIGNOR-276414
Q15208
Q9UBF8
1
phosphorylation
up-regulates activity
0.267
We identified 5 potential NDR1 substrates in the mouse brain and chose two for functional validation. We show that one NDR1 substrate is another kinase, AP-2 associated kinase-1 (AAK1) which regulates dendritic branching as a result of NDR1 phosphorylation. Another substrate is the Rab8 guanine nucleotide exchange factor (GEF) Rabin8 (a Sec2p homolog) which we find is involved in spine synapse formation.
SIGNOR-263033
Q92847
P38405
1
binding
up-regulates activity
0.267
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-256925
P20823
O60656
1
transcriptional regulation
up-regulates quantity by expression
0.267
Using gel shift and functional assays, HNF1alpha was demonstrated to bind to and activate the UGT1A8, -1A9, and -1A10 promoters. In contrast, Cdx2 bound to and activated the UGT1A8 and -1A10 promoters but could not activate the UGT1A9 promoter.
SIGNOR-253973
P18031
Q9NZJ5
1
dephosphorylation
down-regulates activity
0.267
Finally, we demonstrated that wild-type PTP1B directly dephosphorylated myc-tagged PERK that had been isolated from tunicamycin-treated HEK293T cells by immunoprecipitation ( xref ).|The ability of PTP1B to dephosphorylate Tyr619 and inactivate PERK is fine tuned by the production of H 2 S by CSE in response to ER stress.
SIGNOR-277051
Q9Y4E8
Q7Z569
2
deubiquitination
up-regulates quantity by stabilization
0.267
Here we report on a novel interaction between the E3 ligase BRAP (also referred to as IMP), a negative regulator of the MAPK scaffold protein KSR, and two closely related deubiquitylases, USP15 and USP4. USP15 as well as USP4 oppose the autoubiquitylation of BRAP, whereas BRAP promotes the ubiquitylation of USP15.
SIGNOR-272030
Q00987
Q9Y294
1
ubiquitination
down-regulates quantity by destabilization
0.267
We found that MDM2 overexpression also decreased the ASF1A half-life time, indicating an accelerated ASF1A degradation.|We next examined whether the presence of RAD6 is essential for MDM2-induced ASF1A ubiquitination.
SIGNOR-278822
P41743
Q969H0
1
phosphorylation
down-regulates activity
0.267
Here, we report that Fbw7α, the only Fbw7 isoform detected in eggs, is phosphorylated by PKC (protein kinase C) at a key residue (S18) in a manner coincident with Fbw7α inactivation.
SIGNOR-277250
Q9BYW2
P42224
1
methylation
up-regulates activity
0.266
SETD2 enhances antiviral immunity by directly methylating STAT1 on K525. Mechanistically, SETD2 directly mediates STAT1 methylation on lysine 525 via its methyltransferase activity, which reinforces IFN-activated STAT1 phosphorylation and antiviral cellular response.
SIGNOR-269091
Q9NR30
Q8IUC6
1
binding
up-regulates activity
0.266
We demonstrated here that DDX1-DDX21-DHX36 represents a dsRNA sensor that uses the adaptor molecule TRIF to activate the NF-κB pathway and type I IFN responses in dendritic cells. Our study suggests that the DDX1-DDX21-DHX36 complex represents this missing poly I:C sensor, which uses DDX1 to bind poly I:C and uses DDX21 and DXH36 to bind TRIF. Poly I:C is a synthetic form of RNA that mimics double-stranded viral RNA.
SIGNOR-260192
P61981
P55040
1
binding
up-regulates quantity by stabilization
0.266
In order to address whether Gem binds specific isoforms of 14-3-3, we determined the coassociation of Gem and 14-3-3 in the neuroblastoma cell line SY5Y. 14-3-3ζ, -γ, -τ, and -β were observed to bind to Gem. 14-3-3-bound Gem has a twofold-longer half-life than nonbound Gem (Fig. ​(Fig.6).6). A similar increase in protein stability following 14-3-3 binding has been described for the Wee1 kinase
SIGNOR-261713
Q8TEB7
P52565
1
polyubiquitination
up-regulates quantity by stabilization
0.266
We found that RhoGDIα and RhoGDIβ are ubiquitin E3 substrates of GRAIL. GRAIL uses nonlysine 48-ubiquitin linkage in polyubiquitinating RhoGDI. GRAIL was subsequently demonstrated to bind and ubiquitinate RhoGDI, although GRAIL-mediated ubiquitination of RhoGDI did not result in proteosomal degradation. Our data suggest that ubiquitination of RhoGDI by GRAIL does not result in proteolytic degradation. In fact, GRAIL activity appeared to increase RhoGDI stability.
SIGNOR-271622