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14
O14950
Q12852
0
phosphorylation
up-regulates
0.2
Zip kinase (hzipk) phosphorylated the regulatory light chain of myosin ii (mrlc) at both ser19 and thr18 in vitro. In this study, we demonstrate that hzipk also induces the diphosphorylation of mrlc in nonmuscle cells.
SIGNOR-113664
Q16695
Q9C0A6
0
methylation
up-regulates activity
0.2
SETD5 Exhibits Intrinsic Methyltransferase Activity on H3K36. This assay showed that SETD5 has specific histone methyltransferase activity toward K36 but not for other residues such as K4 and K27 (Figure 8B). we revealed that SETD5 is endowed with H3K36 methyltransferase, which is necessary for RNA elongation and processing and, ultimately, correct gene transcription.
SIGNOR-264621
P27361
Q02447
1
phosphorylation
up-regulates
0.299
Here, we show that sp3, which, as sp1, belongs to the gc-rich binding transcription factor family, is also phosphorylated by erk in vitro on serine 73.
SIGNOR-157276
P63000
Q96HP0
0
guanine nucleotide exchange factor
up-regulates activity
0.528
Dock6 is a guanine nucleotide exchange factor (GEF) that activates the Rho family guanosine triphosphatases Rac1 and Cdc42 to regulate the actin cytoskeleton.
SIGNOR-275670
P08151
Q2M1P5
2
binding
up-regulates quantity by stabilization
0.622
Kif7 physically interacted with Gli transcription factors and controlled their proteolysis and stability, and acted both positively and negatively in Hh signaling.
SIGNOR-209608
P12755
Q99717
2
binding
down-regulates
0.697
Ski also represses bmp signaling through interactions with smad4 and bmp-specific r-smads, smad1 or smad6
SIGNOR-95468
P68431
Q92585
0
acetylation
down-regulates activity
0.2
The n-terminal domain of maml1 directly interacts with both p300 and histones, and the p300-maml1 complex specifically acetylates histone h3 and h4 tails in chromatin.
SIGNOR-153038
Q05513
Q96A00
1
phosphorylation
up-regulates activity
0.277
A major kinase for GPCR‐induced CPI‐17 phosphorylation is PKC which is activated by the PLCbeta‐produced signaling messenger diacylglycerol (DAG). It phosphorylates CPI‐17 at Thr38 residue that directly docks at the active site of MLCP, thereby inhibiting its activity and promoting an increase of phosphorylation of myosin and of other MLCP.
SIGNOR-249261
P27361
Q12913
0
dephosphorylation
down-regulates activity
0.459
Tumor suppressor density-enhanced phosphatase-1 (DEP-1) inhibits the RAS pathway by direct dephosphorylation of ERK1/2 kinases|Pulldown and in vitro dephosphorylation assays confirmed our prediction and demonstrated an overall specificity of DEP-1 in targeting the phosphorylated tyrosine 204 of ERK1/2.
SIGNOR-248707
P33316-2
P06493
0
phosphorylation
up-regulates quantity
0.386
DUTPase Is Phosphorylated at a Consensus Cyclin-dependent Protein Kinase Site: in Vitro Phosphorylation of Ser-11 by p34cdc2. It is conceivable that the exclusive phosphorylation of DUT-N may play a role in nuclear targeting of this protein. Taken a step further, Ser-11 may confer the ability of DUT-N to localize in specific regions of the nucleus where the dUTPase function is required. The Ser-11 Ala mutant should aid in the testing of these hypotheses.
SIGNOR-262693
Q99705
P09471
2
binding
up-regulates activity
0.273
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-257235
P37173
Q9HCE7
0
ubiquitination
down-regulates activity
0.615
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-195672
P49336
Q16695
1
phosphorylation
down-regulates activity
0.2
However, within T/G-Mediator, cdk8 phosphorylates serine-10 on histone H3, which in turn stimulates H3K14 acetylation by GCN5L within the complex. Tandem phosphoacetylation of H3 correlates with transcriptional activation, and ChIP assays demonstrate co-occupancy of T/G-Mediator components at several activated genes in vivo.
SIGNOR-273175
O15530
Q15418
1
phosphorylation
up-regulates activity
0.63
Full-length RSK1, RSK2, and RSK3 Are Activated when Coexpressed with PDK1 in COS7 Cells. Ser221 phosphorylation is increased 2–3-fold during ERK-mediated activation of RSK1 in COS1 cells
SIGNOR-250270
P29474
P24723
0
phosphorylation
down-regulates activity
0.2
The phosphorylation of both S617 and S635 have also been shown to promote increased eNOS-derived NO release (Michell et al., 2002). The phosphorylaiton of S617 can be induced by PKA or Akt activity, and may serve to sensitize eNOS to calmodulin binding and modulate the phosphorylation of other eNOS sites
SIGNOR-251634
Q7Z6I6
P61586
1
gtpase-activating protein
down-regulates activity
0.449
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-260485
O00311
Q99459
1
phosphorylation
down-regulates activity
0.344
During SPOC, Dbf4 binds to Cdc5 and promotes Cdc7-mediated phosphorylation of Cdc5, which then presumably prevents Cdc5 from recognizing its substrates in the MEN pathway .
SIGNOR-280203
Q05655
Q16236
1
phosphorylation
up-regulates activity
0.371
Phosphorylation of Nrf2 at Ser-40 by protein kinase C regulates antioxidant response element-mediated transcription.
SIGNOR-249161
Q13309
P48735
1
ubiquitination
down-regulates quantity by destabilization
0.2
During the cell cycle S phase, Cyclin A-CDK2 phosphorylates IDH1 on its Threonine 157 residue (Threonine 197 in IDH2) to facilitate its recognition and ubiquitination by Skp2 E3 ubiquitin, followed by degradation through 26S proteasome
SIGNOR-267626
Q96M02
P04637
1
polyubiquitination
up-regulates quantity by stabilization
0.459
The E3 activity of FATS is required for promoting p53 stability and activation in response to DNA damage.FATS is an E2-independent ubiquitin ligase that stabilizes p53 and promotes its activation in response to DNA damage. Here, we show that FATS acts as a p53 activator by inhibiting Mdm2 binding to p53 and stimulating non-proteolytic polyubiquitination of p53.
SIGNOR-272142
Q13976
Q9NS28
1
phosphorylation
up-regulates activity
0.332
Cyclic AMP- and cyclic GMP-dependent kinases (PKA, PKG) inhibit the interaction of RGS18 and 14-3-3 by phosphorylating S216. S216 phosphorylation might activate PP1 leading to dephosphorylation of both 14-3-3 binding sites, S49 and S218, and detachment of 14-3-3. Removal of 14-3-3 activates RGS18 to turn off Gq signaling thus contributing to platelet inhibition.
SIGNOR-273785
O14503
P63279
0
polyubiquitination
down-regulates quantity by destabilization
0.326
 Co-expression of STRA13 and UBC9 led to an increase of the pSTRA13 ubiquitination and subsequent degradation. These data established that UBC9/STRA13 association in cells is of physiological importance, presenting direct proof of UBC9 involvement in the ubiquitin-dependent degradation of pSTRA13. We also checked whether UBC9 is directly involved in pSTRA13 ubiquitination. Taken together, these results strongly suggest that pSTRA13 is targeted for proteolysis by the ubiquitin-dependent proteasome pathway through association with UBC9.
SIGNOR-272579
Q9Y570
P62714
1
demethylation
down-regulates activity
0.716
Methylation of the carboxy-terminal Leu309 in a conserved TPDYFL309 motif of the C subunit has been shown to enhance the affinity of the PP2A core enzyme for some, but not all, regulatory subunits |Demethylation and negative regulation of PP2A is mediated by a PP2A-specific methylesterase PME-1, which is conserved from yeast to humans.
SIGNOR-265750
Q9ULV8
P07949
1
ubiquitination
down-regulates quantity by destabilization
0.368
Here we show that Cbl-c binds wild-type and MEN2A isoforms of the receptor tyrosine kinase, RET, and that Cbl-c enhances ubiquitination and degradation of activated RET.|We show that Cbl-c negatively regulates RET by ubiquitinating and downregulating the activated RTK while Enigma positively regulates activated RET by preventing Cbl-c binding to RET and thus preventing RET ubiquitination and degradation while promoting RET mitogenic signaling.
SIGNOR-278674
Q13564
P05067
2
binding
up-regulates activity
0.732
Alzheimer's disease (AD) is the gradual loss of the cognitive function due to neuronal death. Currently no therapy is available to slow down, reverse or prevent the disease. Here we analyze the existing data in literature and hypothesize that the physiological function of the Amyloid Precursor Protein (APP) is activating the AppBp1 pathway and this function is gradually lost during the progression of AD pathogenesis.
SIGNOR-251577
O75398
P60763
1
transcriptional regulation
up-regulates quantity by expression
0.2
Affymetrix gene profiling studies revealed Rac3 as a potential target gene and quantitative RT-PCR analysis confirmed that Rac3 was upregulated by Deaf-1 in immortalized mouse mammary epithelial cells.
SIGNOR-269059
P12757
Q15796
2
binding
down-regulates activity
0.801
The ski and snon protein family associate with and repress the activity of smad2, smad3, and smad4, three members of the tgf-fl signaling pathway
SIGNOR-236099
P27361
P10242
1
phosphorylation
down-regulates
0.301
Functional analysis of phosphorylation at serine 532 of human c-myb by map kinase. expression of a polypeptide containing the c-myb c-terminal domain stimulated c-myb activity. This effect is reduced upon mapk-dependent phosphorylation of serine 532. Our data suggest that the mapk-dependent state of phosphorylation modifies the cellular function of c-myb by modulating its interaction with a putative inhibitory factor
SIGNOR-45348
P01112
Q96TA1
2
binding
up-regulates activity
0.2
EGFR phosphorylates FAM129B, resulting in binding of phosphorylated FAM129B to H-Ras and reduced the association of p120-RasGAP with H-Ras, thereby enhancing H-Ras activation for ERK1/2-dependent β-catenin transactivation for enhanced Warburg effect, tumor cell proliferation, and brain tumorigenesis.
SIGNOR-273659
Q16539
O15519
1
phosphorylation
up-regulates
0.373
Here we demonstrate that m. tuberculosis?induced Tnf triggered reactive oxygen species?dependent Activation of ask1 and the tyrosine kinase c-abl (a000161) in mouse macrophages and that flips was phosphorylated on tyr211 and ser4 by c-abl and p38, respectively.
SIGNOR-187001
Q92547
Q99638
2
binding
up-regulates
0.826
The 9-1-1 complex functions as a clamp, encircling the dna, and recruits the brct domain-containing protein topbp1 in a phospho-dependent manner
SIGNOR-179382
Q13315
P17096
1
phosphorylation
up-regulates activity
0.2
21 As shown in Fig. 2 b, ATM was able to phosphorylate in vitro the C-terminal peptide of HMGA1.
SIGNOR-279493
Q9UMX1
P17612
0
phosphorylation
up-regulates quantity by stabilization
0.467
We report that Sufu is phosphorylated at Ser-342 and Ser-346 by GSK3? and cAMP-dependent protein kinase A (PKA), respectively, and phosphorylation at this dual site stabilizes Sufu against Shh signaling-induced degradation
SIGNOR-172003
Q13530
P68400
0
phosphorylation
up-regulates activity
0.2
The two serines within the PSAC of Serinc3 are phosphorylated by casein kinase II and mediate interaction with the μ subunits in vitro.
SIGNOR-273631
P28482
Q02447
1
phosphorylation
up-regulates
0.305
Here, we show that sp3, which, as sp1, belongs to the gc-rich binding transcription factor family, is also phosphorylated by erk in vitro on serine 73. in the inducible cell lines, expression of wild-type form of sp3 increases vegf production whereas the s73a form has a reduced potential reflecting its lower transcriptional activity.
SIGNOR-157272
P0DP24
Q08209
2
binding
up-regulates
0.581
Calcium-bound calmodulin associates with calcineurin (cn), releasing the phosphatase from the repressive effects on an autoinhibitory domain.
SIGNOR-266327
O60674
O15524
0
ubiquitination
down-regulates quantity by destabilization
0.795
Shp-2 regulates socs-1-mediated janus kinase-2 ubiquitination/degradation downstream of the prolactin receptor
SIGNOR-118407
Q96MT8
P24941
1
relocalization
up-regulates activity
0.372
Primary microcephaly (MCPH) associated proteins CDK5RAP2, CEP152, WDR62 and CEP63 colocalize at the centrosome. We found that they interact to promote centriole duplication and form a hierarchy in which each is required to localize another to the centrosome, with CDK5RAP2 at the apex, and CEP152, WDR62 and CEP63 at sequentially lower positions. MCPH proteins interact with distinct centriolar satellite proteins; CDK5RAP2 interacts with SPAG5 and CEP72, CEP152 with CEP131, WDR62 with MOONRAKER, and CEP63 with CEP90 and CCDC14. These satellite proteins localize their cognate MCPH interactors to centrosomes and also promote centriole duplication. Consistent with a role for satellites in microcephaly, homozygous mutations in one satellite gene, CEP90, may cause MCPH. The satellite proteins, with the exception of CCDC14, and MCPH proteins promote centriole duplication by recruiting CDK2 to the centrosome.
SIGNOR-271725
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
P00519
P56945
1
phosphorylation
up-regulates activity
0.462
Abl silencing inhibits CAS mediated process and constriction in resistance arteries.|CAS phosphorylation was catalyzed by Abl in an in vitro study.
SIGNOR-279671
P05787
P18031
0
dephosphorylation
down-regulates activity
0.2
Keratin 8 phospho-Tyr-267 is dephosphorylated by PTP1B and promotes insolubility and filament organization, as does the paralogous GFAP tyrosine.
SIGNOR-265495
Q9NYZ3
P53350
0
phosphorylation
up-regulates
0.736
In this study, we show that g2 and s-phase-expressed 1 (gtse1) protein, a negative regulator of p53, is required for g2 checkpoint recovery and that plk1 phosphorylation of gtse1 at ser 435 promotes its nuclear localization, and thus shuttles p53 out of the nucleus to lead to its degradation during the recovery.
SIGNOR-166417
Q9P212
Q9UBI6
2
binding
up-regulates
0.2
In the non-canonical wntpathway, frizzled uses galfaq or galfai and gbetagamma dimers to activate phospholipase c (plc), resulting in protein kinase c (pkc) activation and calcium mobilization that regulates the transcription factor nfat, and frizzled also signals through the small gtpases rho and rac to c-jun n-terminal kinase (jnk), which activates the ap1 transcription factor
SIGNOR-152612
P08173
P08754
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
P62714
Q00987
1
dephosphorylation
up-regulates activity
0.4
cyclin G also binds in vivo and in vitro to Mdm2 and markedly stimulates the ability of PP2A to dephosphorylate Mdm2 at T216. Consistent with these data, cyclin G null cells have both Mdm2 that is hyperphosphorylated at T216 and markedly higher levels of p53 protein when compared to wild-type cells
SIGNOR-248593
Q14457
Q9Y371
2
binding
up-regulates
0.543
Bif-1 forms a complex with beclin1 through uvrag and promotes the activation of the class iii pi3 kinase, vps34, in mammalian cells.
SIGNOR-171899
Q15628
O75509
2
binding
up-regulates
0.581
Dr6 interacts with tradd
SIGNOR-100184
Q9NPF7
Q5VWK5
2
binding
up-regulates
0.861
We identify a novel member of the hemopoietin receptor family as a subunit of the receptor for il-23, il-23r.
SIGNOR-87805
P10276
P78396
1
transcriptional regulation
down-regulates quantity by repression
0.244
RARα is involved in the regulation of cyclin A1. Further studies using ligands selective for various retinoic acid receptors suggested that cyclin A1 expression is negatively regulated by activated RARα.
SIGNOR-249636
Q8IXJ9
P37231
2
binding
down-regulates activity
0.2
Our genome-wide analysis confirmed the physiological roles of ASXL1 and ASXL2 in adipogenesis at the molecular level, supporting the hypothesis that ASXL1 is an authentic corepressor of PPARγ, whereas ASXL2 is a PPARγ coactivator, and that together ASXL1 and ASXL2 fine-tune adipogenesis via differential regulation of PPARγ. 
SIGNOR-260064
O14745
P06493
0
phosphorylation
down-regulates activity
0.276
During the early stages of mitosis in HeLa cells, Cdc2 phosphorylates EBP50 on serine residues 280 and 302.|Phosphorylation by Cdc2 inhibits EBP50's role in forming microvilli in interphase but not mitotic cells. (A) Results from scoring JEG-3 cells for the presence of microvilli; error bars indicate mean \u00b1 SD. (B) Representative images from the microvillar rescue assay.
SIGNOR-278305
O75581
O94921
0
phosphorylation
up-regulates
0.333
Low-density lipoprotein receptor related proteins 5 and 6 (lrp5/6) are transmembrane receptors that initiate wnt/beta-catenin signaling. Phosphorylation of pppsp motifs in the lrp6 cytoplasmic domain is crucial for signal transduction. Using a kinome-wide rnai screen, we show that pppsp phosphorylation requires the drosophila cyclin-dependent kinase (cdk) l63. L63 and its vertebrate homolog pftk are regulated by the membrane tethered g2/m cyclin, cyclin y, which mediates binding to and phosphorylation of lrp6.
SIGNOR-162924
P46527
Q12778
0
transcriptional regulation
up-regulates quantity by expression
0.627
To date , we have found that TNC regulates the transcriptional activity of FOXO1. And p27Kip1 is one of the transcriptional targets of FOXO1 (Fig. 5A). We speculated that TNC could regulate the binding of FOXO1 to the CDKN1B promoter.
SIGNOR-277739
P33076
P17612
0
phosphorylation
down-regulates activity
0.309
Downregulation of ciita function by protein kinase a (pka)-mediated phosphorylation phosphorylation at ciita serines 834 and 1050 accounts for the inhibitory effects of pka on ciita-driven class ii mhc transcription.
SIGNOR-108569
Q06413
P23409
1
transcriptional regulation
up-regulates quantity by expression
0.565
Myogenin and MEF2 function synergistically to activate the MRF4 promoter during myogenesis.
SIGNOR-238652
Q13131
P04637
1
phosphorylation
up-regulates
0.48
Ampk activation induces phosphorylation of p53 on serine 15, and this phosphorylation is required to initiate ampk-dependent cell-cycle arrest
SIGNOR-135960
P07948
Q05655
1
phosphorylation
down-regulates activity
0.557
Src, Fyn, or Lyn are the essential kinases that tyrosine phosphorylate and inactivate PKC δ. Lyn phosphorylates tyrosine residue 565 in vitro
SIGNOR-251407
Q13315
Q8N0Z6
1
phosphorylation
up-regulates activity
0.538
Here we report a new pathway in which ATM kinase signals the DNA damage response by targeting the transcriptional cofactor Strap. ATM phosphorylates Strap at a serine residue, stabilizing nuclear Strap and facilitating formation of a stress-responsive co-activator complex.
SIGNOR-262645
P00519
P06400
2
binding
down-regulates
0.57
A domain in the c-terminus of rb, outside of the a/b pocket, binds to the atp-binding lobe of the c-abl tyrosine kinase, resulting in kinase inhibition.
SIGNOR-37139
Q96IZ0
P31749
0
phosphorylation
down-regulates activity
0.39
Prostate apoptosis response protein-4 (Par-4) sensitizes cells to chemotherapy
SIGNOR-279668
Q9C0H5
P60953
1
gtpase-activating protein
down-regulates activity
0.577
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-260495
P11413
Q05655
0
phosphorylation
up-regulates
0.2
A pkc activator, significantly increased g6pd phosphorylation and activity, whereas single (s210a, t266a) and double (s210a/t266a) mutations at sites flanking the g6pd active site significantly inhibited phosphorylation, shifted the isoelectric point, and reduced enzyme activity.
SIGNOR-167053
P30679
O15552
2
binding
up-regulates activity
0.404
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-257276
O15530
Q96BR1
1
phosphorylation
up-regulates
0.461
Full-length sgk3 contains a complete phox homology (px) domain that targets the protein to endosomes. Both a functional px domain and pi3k activation are necessary for phosphorylation of sgk3 at two regulatory sites (thr-320 and ser-486) and subsequent induction of kinase activity. Pdk1 phosphorylates endosome-associated sgk3 at thr-320
SIGNOR-147213
Q92935
Q15465
2
binding
down-regulates
0.294
A study in mice suggests that ext1 proteins might negatively regulate shh signaling by synthesizing hspgs, which sequester the ligand
SIGNOR-132606
Q13315
Q9BXW9
1
phosphorylation
up-regulates
0.789
These results suggest that s222 and either s1401, s1404, or s1408 are sites of atm-dependent phosphorylation in vitro.Phosphorylation Of fancd2 is required for activation of an s phase checkpoint
SIGNOR-90117
Q9UJU2
P68400
0
phosphorylation
up-regulates
0.303
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-23958
Q5FBB7
P0C0S8
0
relocalization
up-regulates activity
0.2
The complex between shugoshin and protein phosphatase 2A (Sgo1-PP2A) localizes to centromeres in mitosis, binds to cohesin in a reaction requiring Cdk-dependent phosphorylation of Sgo1, dephosphorylates cohesin-bound sororin, and protects a centromeric pool of cohesin from mitotic kinases and the cohesin inhibitor Wapl.|The centromeric localization of Sgo1 requires histone H2A phosphorylation at T120 (H2A-pT120) by the kinase Bub1.
SIGNOR-265262
P02533
P19438
2
binding
down-regulates activity
0.265
TRADD specifically bound K18 and K14, type I (acidic) keratins. it is possible that epidermal K14 may function as an inhibitor of TNF–TNFR1 signaling through an association with TRADD.
SIGNOR-251906
Q04759
Q15052
1
phosphorylation
up-regulates activity
0.2
Recently, we have reported that the active form of Rac 1 GTPase binds to the glycogen phosphorylase muscle isoform (PYGM) and modulates its enzymatic activity leading to T cell proliferation.|More specifically, αPIX, a known guanine nucleotide exchange factor for the small GTPases of the Rho family, preferentially Rac 1, mediates PYGM activation in Kit 225 T cells stimulated with IL-2. Using directed mutagenesis, phosphorylation of αPIX Rho-GEF serines 225 and 488 is required for activation of the Rac 1/PYGM pathway.
SIGNOR-272168
Q99814
Q9Y2K7
1
transcriptional regulation
up-regulates quantity by expression
0.2
To this end, we confirm that KDM3A, KDM4B, KDM4C, KDM5B, KDM5C, and KDM62 are direct targets of HIF-1a while extent the list of known targets to KDM2A, KDM2B, KDM4D, KDM5A, and KDM6A. The results demonstrated that majority of the KDMs were similarly induced (KDM2A, KDM2B, KDM3A, KDM4B, KDM4C, KDM4D, KDM5A, KDM5B, KDM5C, KDM6B, and KDM7A) or repressed (KDM NO66 and KDM1A) by both HIF-1a and HIF-2a.
SIGNOR-271581
Q00987
P41240
0
phosphorylation
up-regulates activity
0.2
Here we show that activated c-Src kinase phosphorylates Y281 and Y302 of Mdm2, resulting in an increase in Mdm2 stability and its association with Ubc12, the E2 enzyme of the neddylating complex.
SIGNOR-279163
P28482
Q15418
1
phosphorylation
up-regulates activity
0.759
Several lines of evidence indicate that the mapkap-k1 isoforms are also activated by mapks in vivo via the ras-dependent protein kinase cascade that is triggered by growth factors or tumor-promoting phorbol esters, such as phorbol 12-myristate 13-acetate (pma). here we identify six sites in mapkap-k1a that become phosphorylated in transfected cos-1 cells. The inactive form of mapkap-k1a in unstimulated cells is partially phosphorylated at ser222 and ser733. Stimulation with phorbol 12-myristate 13-acetate induces the phosphorylation of thr360, ser364, thr574, and ser381 and increases the phosphorylation of ser222 and ser733.
SIGNOR-219308
O14746
Q96AP0
2
binding
up-regulates
0.557
We find that tpp1 and pot1 form a complex with telomeric dna that increases the activity and processivity of the human telomerase core enzyme.
SIGNOR-152321
Q9Y6A5
O14965
0
phosphorylation
up-regulates activity
0.937
We show that this conserved serine on human TACC3 (Ser(558)) is also phosphorylated by Aurora A. Moreover, phosphorylation of TACC3 by Aurora A in human cells is essential for its proper localization to centrosomes and proximal mitotic spindles. Inhibition of Aurora A with the selective small molecule inhibitor MLN8054 in cultured human tumor cells resulted in mislocalization of TACC3 away from mitotic spindles in a concentration-dependent manner.
SIGNOR-262655
Q96KB5
P45983
1
phosphorylation
up-regulates activity
0.303
Taken together, these findings showed that TOPK positively modulated UVB-induced JNK1 activity and played a pivotal role in JNK1-mediated cell transformation induced by H-Ras.|We showed that TOPK associated with and phosphorylated JNK1 following UVB irradiation in vitro or in vivo.
SIGNOR-280061
P78337
P18146
2
binding
up-regulates activity
0.514
GNRH1 induces expression of early growth response 1 (EGR1), which interacts with steroidogenic factor 1 (SF1) and paired-like homeodomain transcription factor 1 (PITX1) to regulate Lhb promoter activity.
SIGNOR-254916
O43303
P24941
0
phosphorylation
down-regulates activity
0.515
GST-tagged recombinant CP110 (GST-wt) was robustly phosphorylated by cyclin E/CDK2 (Figure 2A). Expression of a mutant derivative of CP110 refractory to CDK phosphorylation provokes marked polyploidy. We localized the majority (nine of ten) of potential CDK2 phosphorylation sites in CP110 to an amino-terminal fragment (GST-ΔN1; Figure 1B)
SIGNOR-265956
P24941
P23771
1
phosphorylation
down-regulates quantity by destabilization
0.362
Phosphorylation of GATA3 Thr-156 was detected in mouse thymocytes, and cyclin-dependent kinase 2 (CDK2) was identified as a respondent for phosphorylation at Thr-156.
SIGNOR-276634
P63092
Q01718
2
binding
up-regulates activity
0.516
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-268694
P12755
Q15796
2
binding
down-regulates activity
0.741
The ski and snon protein family associate with and repress the activity of smad2, smad3, and smad4, three members of the tgf-fl signaling pathway
SIGNOR-236155
O15111
Q86VP1
1
phosphorylation
up-regulates activity
0.383
Here we demonstrate that tax1bp1 was inducibly phosphorylated on ser593 and ser624 in response to proinflammatory stimuli. The kinase ikkalpha, but not ikkbeta, was required for phosphorylation of tax1bp1 and directly phosphorylated tax1bp1 in response to stimulation with tumor necrosis factor (tnf) or interleukin 1 (il-1).
SIGNOR-175062
Q7KZI7
Q8TEW0
1
phosphorylation
up-regulates
0.493
Gab1 brings par1 and par3 into a transient complex, stimulating par3 phosphorylation by par1
SIGNOR-198742
P31785
P05112
2
binding
up-regulates
0.858
The common gamma-chain (gamma(c)) is an indispensable subunit of the functional receptor complexes for il-4, il-7, il-9, and il-15 as well as il-2. Here we show that the gamma(c) is also shared with the il-21r complex
SIGNOR-108861
O96017
O15297
0
dephosphorylation
up-regulates activity
0.572
an in vitro phosphatase assay revealed that Wip1 (WT), but not Wip1 (D314A), dephosphorylates Thr68 on phosphorylated Chk2 in vitro, resulting in the inhibition of Chk2 kinase activity toward glutathione S-transferase-Cdc25C.
SIGNOR-248318
P68400
Q01534
1
phosphorylation
up-regulates activity
0.2
CK2-dependent C-terminal phosphorylation at T300 directs the nuclear transport of TSPY protein
SIGNOR-250969
P56704
Q14332
2
binding
up-regulates
0.753
It was also shown that wnt5a inhibits the beta-catenin pathway by competing with wnt3a for binding to fz2, and that the impairment of clathrin-mediated internalization does not affect this wnt5a inhibitory action.
SIGNOR-189117
P18848
P07949
0
phosphorylation
down-regulates quantity by destabilization
0.2
We observed that RET physically interacted with and phosphorylated ATF4 at tyrosine and threonine residues. Indeed, RET kinase activity was required to inhibit the ATF4-dependent activation of the NOXA gene because the site-specific substitution mutations that block threonine phosphorylation increased ATF4 stability and activated its targets NOXA and PUMA. 
SIGNOR-276448
Q05397
P43146
2
binding
up-regulates activity
0.72
Here we show that different regions of the intracellular domain of DCC directly interacted with the tyrosine kinases Src and focal adhesion kinase (FAK). Netrin activated both FAK and Src and stimulated tyrosine phosphorylation of DCC. Inhibition of Src family kinases reduced DCC tyrosine phosphorylation and blocked both axon attraction and outgrowth of neurons in response to netrin. Mutation of the tyrosine phosphorylation residue in DCC abolished its function of mediating netrin-induced axon attraction. On the basis of our observations, we suggest a model in which DCC functions as a kinase-coupled receptor, and FAK and Src act immediately downstream of DCC in netrin signaling.
SIGNOR-268371
Q14195
Q00535
0
phosphorylation
up-regulates activity
0.603
Together, these results suggest that crmp4 is able to increase neurite formation and elongation in neurons, although not as potently as crmp2, and that this process is regulated by ser522/ser518/thr514/thr509 phosphorylation in both cases. We demonstrate that cdk5 primes crmp2 and crmp4 for subsequent phosphorylation by gsk3, whereas dyrk2, phosphorylates and primes only crmp4 in vitro
SIGNOR-145963
P36896
P13385
2
binding
up-regulates activity
0.728
Nodal effects are dependent upon interactions with Cripto, a small cysteine-rich extracellular protein that is attached to the plasma membrane through a glycosyl phosphatidyl inositol linkage. Cripto interacts with Nodal and ALK4, independently, and promotes the formation of a stable high affinity complex with activin type II receptors.
SIGNOR-251938
P46108
P00519
0
phosphorylation
down-regulates activity
0.76
Negative regulation of crk by abl is essential for the antitumorigenic effects of ephrinb2,similar pathways may operate for crkl
SIGNOR-175135
Q9Y5F7
Q9Y5H9
2
binding
up-regulates activity
0.2
The clustered protocadherins comprise the largest subfamily of the cadherin superfamily and are predominantly expressed in the nervous system. Pcdh-alpha proteins interact with beta1-integrin to promote cell adhesion. They also form oligomers with Pcdh-gamma proteins at the same membrane sites.
SIGNOR-265693
Q8IWJ2
P11717
1
relocalization
up-regulates activity
0.529
Rab9-dependent transport from late endosomes to the Golgi requires the Rab9 effectors p40 (Diaz et al., 1997) and TIP47 (Diaz and Pfeffer, 1998), a protein that recognizes the cytoplasmic domains of the two types of MPRs and packages them into nascent transport vesicles (Carroll et al., 2001). MPR recycling also utilizes a TGN-localized coiled-coil protein named GCC185 that is also a Rab9 effector
SIGNOR-253085
Q16875
Q13131
0
phosphorylation
up-regulates
0.399
Ipfk-2 was phosphorylated on the homologous serine (ser-461) and activated by ampk in vitro.
SIGNOR-89760
P48454
P0DP25
2
binding
up-regulates
0.525
Calcium-bound calmodulin associates with calcineurin (cn), releasing the phosphatase from the repressive effects on an autoinhibitory domain.
SIGNOR-266340
P0DP23
P29474
2
binding
up-regulates activity
0.76
Electrons flow from the C-terminal reductase domain of one NOS monomer to the N-terminal oxygenase domain of the other NOS monomer (Siddhanta et al., 1998). The primary mode of enzyme activation is the binding of calcium-bound calmodulin to the N-terminal CaM-binding domain. This facilitates a structure change and the flow of electrons from NADPH through the flavins to the oxygenase domain of the other eNOS monomer
SIGNOR-251615
Q9UKV5
Q00535
0
phosphorylation
down-regulates quantity by destabilization
0.248
We found that GP78 expression is decreased in MPTP-based cellular and animal PD models, and CDK5 directly phosphorylated GP78 at Ser516, which promoted the ubiquitination and degradation of GP78. 
SIGNOR-277356
P55085
P63096
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-256895
Q13554
P35222
1
phosphorylation
down-regulates
0.289
Camkii represses transcriptionally active _-catenin to mediate acute ethanol neurodegeneration and can phosphorylate _-catenincamkii can directly phosphorylate _-catenin. Using targeted mutagenesis we identified camkii phosphorylation sites within human _-catenin at t332, t472, and s552.
SIGNOR-202833