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P20339
Q9UH99
0
binding
up-regulates activity
0.42
Rab5ip represents a novel rab5 interacting protein that may function on endocytic vesicles as a receptor for rab5-GDP and participate in the activation of rab5
SIGNOR-261309
P36888
P11309
0
phosphorylation
up-regulates quantity
0.42
Pim-1 Kinase Phosphorylates and Stabilizes 130 kDa FLT3 and Promotes Aberrant STAT5 Signaling in Acute Myeloid Leukemia with FLT3 Internal Tandem Duplication[...]Pim-1 inhibition also decreased phosphorylation of FLT3 at tyrosine 591 and of STAT5, and expression of Pim-1 itself, consistent with inhibition of the FLT3-ITD-STAT5 signaling pathway.
SIGNOR-259927
Q7L804
Q7KZI7
0
phosphorylation
up-regulates
0.42
We identified the kinase that phosphorylated rab11-fip2 as mark2/emk1/par-1balpha (mark2), and recombinant mark2 phosphorylated rab11-fip2 only on serine 227. In calcium switch assays, cells expressing rab11-fip2(s227a) showed a defect in the timely reestablishment of p120-containing junctional complexes.
SIGNOR-147118
Q8N5V2
Q00535
0
phosphorylation
up-regulates activity
0.42
Importantly, ephexin1, a Rho GEF, is phosphorylated by Cdk5 in vivo .
SIGNOR-279021
Q8NEB9
P06493
0
phosphorylation
down-regulates
0.42
We show that vps34 is phosphorylated on thr159 by cdk1, thr159 phosphorylation negatively regulates the ptdins3 kinase activity of vps34 and autophagy
SIGNOR-165768
Q9Y6R4
O15169
0
binding
up-regulates
0.42
Mekk4, also binds to axin in vivo and mediates axin-induced jnk activation.
SIGNOR-104003
Q9BUB5
Q13177
0
phosphorylation
down-regulates activity
0.42
Phosphorylation of Mnk1 by caspase-activated Pak2/gamma-PAK inhibits phosphorylation and interaction of eIF4G with Mnk. When 293T cells are subjected to apoptotic induction by hydrogen peroxide, Mnk1 is phosphorylated at both Thr(22) and Ser(27). These results indicate a role for Pak2 in the down-regulation of translation initiation in apoptosis by phosphorylation of Mnk1.
SIGNOR-250221
O14641
P34925
0
binding
up-regulates
0.419
Ryk also binds to dishevelled, through which it activates the canonical wnt, providing a link between wnt and dishevelled.
SIGNOR-129571
P10636
Q96L34
0
phosphorylation
down-regulates activity
0.419
AMPK phosphorylation inhibits tau binding of microtubules. In order to study further the phosphorylation of tau by AMPK, we compared phosphorylation of tau by MARK4 or AMPK using a panel of phospho-tau antibodies (Figure 2A). Five phosphorylation sites common to both kinases were identified (Thr231, Ser262, Ser356, Ser396 and Ser422). In addition, AMPK, but not MARK4, was capable of phosphorylating Ser214 (Figure 2A).
SIGNOR-273935
P42261
P46934
0
ubiquitination
down-regulates quantity
0.419
Finally, we show that ubiquitination of GluA1 by Nedd4-1 becomes more prevalent as neurons mature.|The ability of Nedd4-1 to reduce surface GluA1 levels required its ligase activity, since co-expression of a catalytically-inactive version of Nedd4-1 (Nedd4-1 CS) did not decrease surface GluA1 levels .
SIGNOR-278572
P12931
Q8TEW6
0
binding
up-regulates
0.419
Insulin receptor-phosphorylated irs5/dok4 associates with rasgap, crk, src, and fyn, but not phosphatidylinositol 3-kinase p85, grb2, shp-2, nck, or phospholipase cgamma src homology 2 domains, and activates mapk in cells.
SIGNOR-101002
P00533
P00519
0
phosphorylation
up-regulates
0.419
we show that activated Abl phosphorylates the EGFR primarily on tyrosine 1173Furthermore, we show that activated Abl allows the ligand-activated EGFR to escape Cbl-dependent down-regulation by inhibiting the accumulation of Cbl at the plasma membrane in response to epidermal growth factor stimulation and disrupting the formation of the EGFR.Cbl complex without affecting Cbl protein stability. These findings reveal a novel role for Abl in promoting increased cell-surface expression of the EGFR and suggest that Abl/EGFR signaling may cooperate in human
SIGNOR-149277
O15297
Q9H2X6
0
phosphorylation
down-regulates quantity by destabilization
0.419
HIPK2 phosphorylates WIP1 at Ser54 and Ser85, and phosphorylated WIP1 is subject to proteasomal degradation so that WIP1 is maintained at low levels.
SIGNOR-278230
P10636-5
Q96L34
0
phosphorylation
down-regulates activity
0.419
AMPK phosphorylation inhibits tau binding of microtubules. In order to study further the phosphorylation of tau by AMPK, we compared phosphorylation of tau by MARK4 or AMPK using a panel of phospho-tau antibodies (Figure 2A). Five phosphorylation sites common to both kinases were identified (Thr231, Ser262, Ser356, Ser396 and Ser422). In addition, AMPK, but not MARK4, was capable of phosphorylating Ser214 (Figure 2A).
SIGNOR-273932
Q96NT3
P46934
0
polyubiquitination
down-regulates quantity by destabilization
0.419
The E3 ligase NEDD4 regulates GUCD1 degradation. many polyubiquitinylated species of GUCD1 appeared as high molecular weight forms, suggesting that GUCD1 is degraded by the proteasome, after polyubiquitin chain formation, in the presence of NEDD4-1.
SIGNOR-272846
Q6JBY9
O15264
0
phosphorylation
down-regulates activity
0.419
CapZIP was also phosphorylated rapidly by SAPK3/p38γ and SAPK4/p38δ, and even faster and more extensively by JNK1α1, these protein kinases phosphorylating CapZIP in vitro to >3, approx. 2 and >5 mol of phosphate/mol of protein respectively within a few minutes. Following tryptic digestion and C18 chromatography, further sites phosphorylated by JNK1α1 were identified as Ser-68, Ser-83 and Ser-216 (results not shown), and are highlighted in Figure 3.Using this antibody, we showed by immunoblotting that bacterially expressed CapZIP was phosphorylated at Ser-108 by SAPK4/p38δ, JNK1α1 and ERK2 in vitro, as well as by SAPK3/p38γ (results not shown).An important clue to the function of CapZIP and its phosphorylation came from the finding that it binds to the actin-capping protein CapZ (Figure 7A), and that cellular stresses trigger the dissociation of these two proteins (Figure 7B).Such an effect is presumably lost when CapZIP is phosphorylated and dissociates from CapZ.
SIGNOR-263084
Q9UMX1
Q9UF56
0
ubiquitination
down-regulates quantity by destabilization
0.419
Here, we show that Fbxl17 (F-box and leucine-rich repeat protein 17) targets Sufu for proteolysis in the nucleus. The ubiquitylation of Sufu, mediated by Fbxl17, allows the release of Gli1 from Sufu for proper Hh signal transduction
SIGNOR-253545
O15554
P22392
0
phosphorylation
up-regulates
0.419
We previously showed that nucleoside diphosphate kinase beta (ndpk-b), a mammalian histidine kinase, is required for kca3.1 channel activation in human cd4 t lymphocytes.
SIGNOR-181083
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
P01116
P49356
0
null
up-regulates activity
0.419
Major investments have been made to target Ras through indirect routes. Inhibition of farnesyl transferase to block Ras maturation has failed in large clinical trials.
SIGNOR-242556
P35222
P19793
0
binding
down-regulates
0.419
Rxr agonists still inactivated endogenous beta-catenin via rxr alpha.
SIGNOR-101293
Q14493
P06493
0
phosphorylation
down-regulates quantity by destabilization
0.419
Phosphorylation of threonine 61 by cyclin a/Cdk1 triggers degradation of stem-loop binding protein at the end of S phase
SIGNOR-265258
O95239
O14965
0
phosphorylation
up-regulates activity
0.419
We show that Aurora A phosphorylates the condensin I-dependent pool of KIF4A and thus actively promotes chromosome congression from the spindle poles to the metaphase plate. In vitro kinase assays showed that recombinant KIF4A can be phosphorylated by Aurora A and that this activity is inhibited by the specific Aurora A inhibitor MLN8537 (Fig. 7 C).
SIGNOR-265993
Q9NZN5
P50148
0
binding
up-regulates activity
0.419
Leukemia-associated Rho guanine nucleotide exchange factor promotes G alpha q-coupled activation of RhoA.
SIGNOR-256520
P08754
Q9H1C0
0
binding
up-regulates activity
0.419
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-256861
P49841
Q5JTC6
0
relocalization
up-regulates activity
0.419
Amer1 binds ck1gamma, recruits axin and gsk3beta to the plasma membrane and promotes complex formation between axin and lrp6.
SIGNOR-171892
Q8IY63
Q9P2P5
0
ubiquitination
up-regulates activity
0.419
These results clearly indicate that HECW2 ubiquitinates AMOTL1 with K63-linked polyubiquitin chains.|Unlike NEDD4.2, HECW2 targeted AMOTL1 and promoted its stability.
SIGNOR-278811
Q9UQL6
Q14012
0
phosphorylation
down-regulates
0.419
Camk phosphorylates serines -259 and -498 in hdac5, which subsequently serve as docking sites for 14-3-3. Our studies suggest that 14-3-3 binding to hdac5 is required for camk-dependent disruption of mef2hdac complexes and nuclear export of hdac5, and implicate 14-3-3 as a signal-dependent regulator of muscle cell differentiation.
SIGNOR-85022
Q14934
P45984
0
phosphorylation
up-regulates activity
0.419
Here, we showed that the nuclear factor of activated T3 (NFAT3) is phosphorylated by JNK1 or JNK2 at Ser(213) and Ser(217), which are located in the conserved SP motif.|Moreover, a 3xNFAT-luc reporter gene assay indicated that NFAT3 transcriptional activity was increased in a dose-dependent manner by JNK1 or JNK2.
SIGNOR-280036
Q13485
P27361
0
phosphorylation
up-regulates
0.419
Our results suggest that map kinase can phosphorylate thr276 of smad4 and that phosphorylation can lead to enhanced tgf-beta-induced nuclear accumulation and, as a consequence, enhanced transcriptional activity of smad4.
SIGNOR-101664
Q8IZP0
P06493
0
phosphorylation
down-regulates activity
0.419
We identified serine 216 of Abi1 as a target of CDK1/cyclin B kinase that is phosphorylated in cells at the onset of mitosis.|Bcr-Abl-induced actin polymerization requires the Abi1 pathway, as the blockade of the signal transduction from Bcr-Abl to Abi1 abolishes the F-actin assembly|serine phosphorylation of Abi1 by CDK1/cyclin B serves as a cell cycle-dependent regulatory mechanism that inhibits actin assembly
SIGNOR-264421
P10636-4
Q96L34
0
phosphorylation
down-regulates activity
0.419
AMPK phosphorylation inhibits tau binding of microtubules. In order to study further the phosphorylation of tau by AMPK, we compared phosphorylation of tau by MARK4 or AMPK using a panel of phospho-tau antibodies (Figure 2A). Five phosphorylation sites common to both kinases were identified (Thr231, Ser262, Ser356, Ser396 and Ser422). In addition, AMPK, but not MARK4, was capable of phosphorylating Ser214 (Figure 2A).
SIGNOR-273934
P62736
P01137
0
transcriptional regulation
up-regulates quantity by expression
0.419
A TGF-β1 response element that has a sequence different to that known for Smad binding has been identified in the α- SM actin promoter and seems to be essential for expression of α-SM actin in both SM cells 72 and myofibroblasts73 . How TGF-β1 activates expression of α-SM actin through this TGF-β1 control element is, as yet, unknown
SIGNOR-277681
Q12778
P48729
0
phosphorylation
down-regulates
0.418
Additionally, ck1, dyrk1a, and cdk2 also phosphorylate foxos at various sites to inhibit foxos activity
SIGNOR-183658
P13631
P50613
0
phosphorylation
up-regulates activity
0.418
RARg Is Phosphorylated by cdk7 in Its B and F Regions | Mutation into alanine of Ser-77 and Ser-79 located in the A/B region reduced the transcriptional activity of hRARg1 (Fig. 9A), confirming that these phosphorylation sites are required for optimal transcription.
SIGNOR-259853
P27448
P11309
0
phosphorylation
down-regulates
0.418
Here we show that the protein kinase cdc25 c-associated kinase 1 (c-tak1) is a binding partner and a substrate of pim-1.
SIGNOR-128264
P11137
Q9P0L2
0
phosphorylation
down-regulates activity
0.418
Here we show that p110mark phosphorylates analogous KXGS sites in the microtubule binding domains of the neuronal MAP2 and the ubiquitous MAP4. Phosphorylation in vitro leads to the dissociation of MAP2 and MAP4 from microtubules and to a pronounced increase in dynamic instability.
SIGNOR-250166
Q16236
P05771
0
phosphorylation
up-regulates
0.418
Phosphorylation of nrf2 at ser-40 by protein kinase c regulates antioxidant response element-mediated transcription / recently we reported evidence for the involvement of protein kinase c (pkc) in phosphorylating nrf2 and triggering its nuclear translocation in response to oxidative stress
SIGNOR-91830
P42338
Q6ZUJ8
0
binding
up-regulates
0.418
This accumulation of tyrosine-phosphorylated bcap at the membrane with its associated pi3k would then allow for the catalysis of ptd ins p2 to ptd ins p3 and downstream pi3k-dependent signals. Therefore, bcap is an essential activator of the pi3k pathway downstream of tlr signaling, providing a brake to limit potentially pathogenic excessive tlr responses.
SIGNOR-191667
Q96S44
Q96KB5
0
phosphorylation
up-regulates activity
0.418
In this study, we provide evidence showing that TOPK promotes metastasis of colorectal carcinoma, which is mediated through its phosphorylation of PRPK at Ser250.|Therefore, we conclude that TOPK directly promotes metastasis of colorectal cancer by modulating PRPK.
SIGNOR-278236
O14746
P12931
0
phosphorylation
down-regulates
0.418
Hydrogen peroxide triggers nuclear export of telomerase reverse transcriptase via src kinase family-dependent phosphorylation of tyrosine 707
SIGNOR-102097
Q9Y463
Q96S59
0
binding
down-regulates activity
0.418
Serine/threonine kinase Mirk/Dyrk1B is an inhibitor of epithelial cell migration and is negatively regulated by the Met adaptor Ran-binding protein M.
SIGNOR-238008
Q92547
Q8IYD8
0
relocalization
up-regulates
0.418
The enzymatic activity of fan cm is then required to remodel and stabilize the fork to allow topbp1 access to activate atr , in a 9-1-1-independent manner.
SIGNOR-164765
Q6N021
O60674
0
phosphorylation
up-regulates activity
0.418
Specifically, cytokine receptor-associated JAK2 phosphorylates TET2 at tyrosines 1939 and 1964. Phosphorylated TET2 interacts with the erythroid transcription factor KLF1, and this interaction with TET2 is increased upon exposure to erythropoietin. 
SIGNOR-277289
O15182
O43303
0
binding
up-regulates activity
0.418
We report that CP110 interacts with two different Ca2+-binding proteins, calmodulin (CaM) and centrin, in vivo. our data demonstrate a functional role for CaM binding to CP110 and suggest that CP110 cooperates with CaM and centrin to regulate progression through cytokinesis.
SIGNOR-265968
P27695
Q03468
0
binding
down-regulates activity
0.418
CSB stimulates the AP site incision activity of APE1 on normal (i.e. fully paired) and bubble AP-DNA substrates, with the latter being more pronounced (up to 6-fold). This activation is ATP-independent, and specific for the human CSB and full-length APE1 protein. CSB and APE1 were also found in a common protein complex in human cell extracts, and recombinant CSB, when added back to CSB-deficient whole cell extracts, resulted in increased total AP site incision capacity.
SIGNOR-251932
P35579
P26447
0
binding
down-regulates activity
0.418
Our results show that S100A4 regulates cell polarization during directed motility by affecting the localization of protrusions through interactions with myosin-IIA, with S100A4 expressing cells displaying few side protrusions and extensive forward protrusions during chemotaxis compared with control cells. The mechanisms by which these antibodies and S100A4 increase protrusive activity and promote cellular motility are not well understood, but the observation that S100A4 can inhibit the actin-activated ATPase of myosin-IIA (34) suggests that S100A4 could function as a myosin-IIA inhibitor in vivo.
SIGNOR-269282
P49916
P24941
0
phosphorylation
down-regulates
0.418
Dna ligase iii_ is specifically phosphorylated in replicating cells by the cell cycle kinase cdk2. However, in response to oxidative dna damage, dna ligase iii_ is dephosphorylated in a pathway that is dependent upon the dna damage-activated, phosphatidylinositol 3-phosphate (pi3)1-related kinase atm.
SIGNOR-150121
P63096
P32249
0
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
P35968
P18031
0
dephosphorylation
down-regulates activity
0.418
This led to increased PTPN1 (PTP1b)-mediated dephosphorylation of VEGFR2 at Y 1175 , the site involved in activating ERK signaling.
SIGNOR-277011
P43405
Q92835
0
dephosphorylation
down-regulates activity
0.418
An adaptor protein Dok-3 mediates the suppressive function of LYN. The Dok-3 phosphorylated by LYN upon BCR stimulation forms a complex with GRB2, which allows it to enter into the signalosome and associate with activation of SHIP protein. This translocation facilitates the efficient inhibition of PLCc2 and SYK from activation, subsequently resulting in the suppression of downstream Ca2+ signaling.
SIGNOR-268456
Q14451
P06213
0
binding
up-regulates
0.418
Insulin induces the ir-grb7 interaction in cells expressing physiological levels of the proteins, suggesting that grb7 is implicated in insulin signaling.
SIGNOR-77153
Q6UUV7
P57059
0
phosphorylation
down-regulates
0.418
These results suggested that sik1 could phosphorylate all torcs and thereby repress their transactivation activities.
SIGNOR-147703
Q01844
Q15637
0
binding
down-regulates
0.418
Here we report that zfm1 also interacts withews / overexpression of zfm1 in hepg2 cells represses the transactivation of reporter gene expression driven by gal4-ews-ntd fusion protein and this repression correlates with zfm1 binding to ews.
SIGNOR-58928
P38936
Q9NRM7
0
phosphorylation
down-regulates quantity
0.417
Phosphorylation by Lats2 induces degradation of p21 and promotes apoptosis.|Subsequently, Lats2 phosphorylates p21 at S146.
SIGNOR-279530
P30304
Q8NG66
0
phosphorylation
down-regulates
0.417
Nek11 regulates cdc25a degradation and the ir-induced g2/m checkpointincubation of wild-type cdc25a with nek11 led to a marked increase in phosphorylation of ser 82 and 88 as detected with the phosphospecific antibody recognizing these sites
SIGNOR-187867
O96020
Q9HCK8
0
transcriptional regulation
up-regulates quantity by expression
0.417
In order to identify CHD8 target genes, we performed a transcriptomic analysis of CHD8-depleted cells, finding out that CHD8 controls the expression of cyclin E2 (CCNE2) and thymidylate synthetase (TYMS), two genes expressed in the G1/S transition of the cell cycle. CHD8 was also able to co-activate the CCNE2 promoter in transient transfection experiments. Chromatin immunoprecipitation experiments demonstrated that CHD8 binds directly to the 5' region of both CCNE2 and TYMS genes.
SIGNOR-268804
P17252
O15530
0
phosphorylation
up-regulates
0.417
One of the most studied events controlled by ptdins(3,4,5)p3, comprises the activation of a of agc family protein kinases, including isoforms of protein kinase b (pkb)/akt, p70 ribosomal s6 kinase (s6k), serum and glucocorticoid-induced protein kinase (sgk) and protein kinase c (pkc), which play crucial roles in regulating physiological processes relevant to metabolism, growth, proliferation and survival. Here, we review recent biochemical, genetic and structural studies on the 3-phosphoinositide-dependent protein kinase-1 (pdk1), which phosphorylates and activates the agc kinase members regulated by pi 3-kinase. We also discuss whether inhibitors of pdk1 might have chemotherapeutic potential in the treatment of cancers in which the pdk1-regulated agc kinases are constitutively activated.
SIGNOR-126066
Q05586
P17252
0
phosphorylation
up-regulates activity
0.417
Serines 890 and 896 of the NMDA receptor subunit NR1 are differentially phosphorylated by protein kinase C isoforms. The results show that PKC alpha phosphorylates preferentially S896 and PKC gamma preferentially S890.
SIGNOR-263177
Q15306
O75116
0
phosphorylation
up-regulates
0.417
Carock2 phosphorylated irf4 at either of 2 distinct phosphorylation sites, s446 and s447 / rock2-mediated phosphorylation of irf4 regulated the synthesis of il-17 and il-21 and the differentiation of th17 cells.
SIGNOR-167471
P43354
P28702
0
binding
up-regulates
0.417
The recent discovery that the nuclear transcription factor, nurr1, in heterodimeric tandem with rxr, is unequivocally necessary for the expression of dopaminergic neurons
SIGNOR-58309
O14965
Q13153
0
phosphorylation
up-regulates
0.417
The upstream pak1 kinase can phosphorylate aurora a at t288, autophosphorylation appears to be the essential mode of activation. Our experiments suggest that phosphorylation of t288 is important for regulation of the aurora2 kinase both for its activity and its stability
SIGNOR-205110
P46934-4
P12931
0
phosphorylation
up-regulates activity
0.417
Activation of c-Src by epidermal growth factor (EGF) also promoted tyrosine phosphorylation and enhanced the activity of NEDD4. 
SIGNOR-276860
Q9NRY4
P23471
0
dephosphorylation
down-regulates activity
0.417
Protein tyrosine phosphatase receptor type Z is involved in hippocampus-dependent memory formation through dephosphorylation at Y1105 on p190 RhoGAP| Furthermore, Ptprz selectively dephosphorylated pY1105 of p190 RhoGAP in vitro, and the tyrosine phosphorylation at Y1105 controls p190 RhoGAP activity in vivo.
SIGNOR-248451
Q15746
P12931
0
phosphorylation
up-regulates
0.417
Ec mlck-1 is phosphorylated by p60(src) on tyr(464) and tyr(471), resulting in a 2- to 3-fold increase in ec mlck-1 enzymatic activity.
SIGNOR-85009
Q06330
Q96K30
0
binding
down-regulates
0.417
Thus, we propose that rita acts as a negative modulator of the notch signalling pathway, controlling the level of nuclear rbp-j/cbf-1, where its amounts are limiting.
SIGNOR-170089
P29320
P18031
0
dephosphorylation
down-regulates activity
0.417
Nevertheless, the finding that phosphorylation of the activation loop tyrosine (EphA3-Y779), a recently identified PTP1B substrate (Mertins et al., 2008), is essential for ligand-induced endocytosis (Janes et al., 2009)
SIGNOR-248426
P42336
P16144
0
binding
up-regulates
0.417
Stable expression of alpha6beta4 increased carcinoma invasion in a pi3k-dependent manner, and transient expression of a constitutively active pi3k increased invasion in the absence of alpha6beta4. Ligation of alpha6beta4 stimulated significantly more pi3k activity than ligation of beta1 integrins, establishing specificity among integrins for pi3k activation.
SIGNOR-54530
Q92831
P78527
0
phosphorylation
up-regulates activity
0.417
In response to UV-induced DNA damage, DNA-PK phosphorylates and activates PCAF, and activated PCAF is transferred to photo lesion sites and further acetylates RPA1 at K163.
SIGNOR-280092
P04637
Q13627
0
phosphorylation
up-regulates
0.417
Dyrk1a phosphorylates p53 and inhibits proliferation of embryonic neuronal cells. we found that dyrk1a phosphorylates p53 at ser-15 in vitro and in immortalized rat embryonic hippocampal progenitor h19-7 cells. In addition, dyrk1a-induced p53 phosphorylation at ser-15 led to a robust induction of p53 target genes
SIGNOR-167407
Q06945
Q01344
0
binding
up-regulates activity
0.417
Sox4 activation by IL-5R_ appears to be direct, with syntenin functioning as an adaptor molecule. Syntenin mediates IL-5–induced Sox4 activation.
SIGNOR-223010
P10243
P19338
0
binding
down-regulates activity
0.417
We identify nucleolin as one of the nuclear polypeptides that interact specifically with the A-Myb and c-Myb. We show that the interaction of nucleolin with Myb is functional because co-transfection of nucleolin down-regulates Myb transcriptional activity.
SIGNOR-221233
Q9H444
Q6DKK2
0
binding
up-regulates activity
0.417
We show that PtdIns(3)P localizes to the midbody during cytokinesis and recruits a centrosomal protein, FYVE-CENT (ZFYVE26), and its binding partner TTC19, which in turn interacts with CHMP4B, an endosomal sorting complex required for transport (ESCRT)-III subunit implicated in the abscission step of cytokinesis. On the basis of these data and the high-content microscopy described above, we propose that PtdIns(3)P controls the KIF13A-dependent recruitment of FYVE-CENT and TTC19 to the midbody, and that TTC19 is the most downstream effector of the three, possibly controlling the function of CHMP4B.
SIGNOR-265541
P46940
O75122
0
binding
up-regulates activity
0.416
IQGAP1 is a novel CLASP2-interacting protein| nonphosphorylated CLASP2 on microtubules is allowed to associate with IQGAP1 for the coupling of microtubules to actin filaments at the front of migrating cells.
SIGNOR-264828
O75369
Q96Q27
0
binding
down-regulates quantity by destabilization
0.416
Here, we provide the first evidence that a novel ASB2 isoform, ASB2beta, is important for muscle differentiation. ASB2beta is expressed in muscle cells during embryogenesis and in adult tissues. ASB2beta is part of an active E3 ubiquitin ligase complex and targets the actin-binding protein filamin B (FLNb) for proteasomal degradation.  Altogether, our results indicated that ASB2β can assemble with elongin B, elongin C, Cullin 5 and Rbx2 to reconstitute an active E3 ubiquitin ligase complex.ASB2β induces polyubiquitylation of FLNb.
SIGNOR-271795
Q96E17
Q86UR5
0
relocalization
up-regulates activity
0.416
N-terminal interactions of RIMs with RAB3 and MUNC13 regulate DCV fusion. Through N-terminal interactions, RIMs position MUNC13 and recruit DCVs via RAB3, which is located on the vesicle
SIGNOR-264382
Q8IU85
Q8N5S9
0
phosphorylation
up-regulates activity
0.416
CaM-KIdelta exhibits Ca(2+)/CaM-dependent activity that is enhanced (approximately 30-fold) in vitro by phosphorylation of its Thr180 by CaM-K kinase (CaM-KK)alpha, consistent with detection of CaM-KIdelta-activating activity in HeLa cells. | This sustained activation of CaM-KIdelta was completely abolished by Thr180Ala mutation and inhibited by CaM-KK inhibitor, STO-609, indicating a functional CaM-KK/CaM-KIdelta cascade in HeLa cells.
SIGNOR-250715
Q9Y6K9
P12931
0
phosphorylation
down-regulates activity
0.416
Either IKKγ/NEMO WT or the Y374F mutant was coexpressed with each member of the Src family protein tyrosine kinases (SF-PTKs) in HEK 293T cells. Our study thus demonstrates that the Y374 or S377 residue located at the C-terminal proline-rich domain of human IKKγ/NEMO undergoes phosphorylation upon TNF-α treatment or KvFLIP expression, respectively, resulting in the suppression of IKKγ/NEMO activity to induce NF-κB activation. 
SIGNOR-276370
P53350
P60510
0
dephosphorylation
down-regulates activity
0.416
PPP4C dephosphorylated PLK1 at the S137 site, negatively regulating its activity in the DSB response in early embryonic cells.
SIGNOR-277076
Q9Y618
O15111
0
phosphorylation
down-regulates
0.416
Nf-kappab transcription requires ikkalpha to phosphorylate smrt on chromatin, stimulating the exchange of corepressor for coactivator complexes. Ikk directly phosphorylates smrt to stimulate nuclear export. Ikkalpha orchestrates smrt derepression, a prerequisite for nf-kappab transcription and survival.
SIGNOR-129956
O00329
P21860
0
binding
up-regulates
0.416
Pi3k is the sole binding partner to six tyrosines of erbb3 and one in erbb4.
SIGNOR-146867
P55087
P68400
0
phosphorylation
down-regulates activity
0.416
We found that the stress-induced kinase casein kinase (CK)II phosphorylates the Ser276 immediately preceding the tyrosine motif, increasing AQP4-mu 3A interaction and enhancing AQP4-lysosomal targeting and degradation. AQP4 phosphorylation by CKII may thus provide a mechanism that regulates AQP4 cell surface expression. | To determine whether Ser276 is an actual CKII substrate, we used GST–AQP4-Cter proteins in which only one out of the three C-terminal CKII consensus sites was sequentially conserved (Ser276, Ser285 and Ser315, respectively). Figure 7B (right panel) shows that the three serine residues, including Ser276, were indeed efficiently phosphorylated by CKII.
SIGNOR-250827
P01116
P52306
0
binding
up-regulates
0.416
Smggds has been previously shown to activate a wide variety of small gtpases, including the ras family members rap1a, rap1b, and k-ras, as well as the rho family members cdc42, rac1, rac2, rhoa, and rhob
SIGNOR-171415
P09651
Q9UBS0
0
phosphorylation
up-regulates activity
0.416
Here, we show that S6K2 binds and phosphorylates hnRNPA1 on novel Ser4/6 sites, increasing its association with BCL-XL and XIAP mRNAs to promote their nuclear export.
SIGNOR-279569
P41594
P17252
0
phosphorylation
up-regulates activity
0.416
Thus, we showed that it is phosphorylation of Ser-839, not Thr-840, that is absolutely required for the unique Ca2+ oscillations produced by mGluR5 activation. The Thr-840 residue is important only in that it is permissive for the PKC-dependent phosphorylation of Ser-839.
SIGNOR-249278
P01148
Q9H1B7
0
transcriptional regulation
up-regulates quantity by expression
0.416
EAP1 encoded a nuclear protein expressed in neurons involved in the inhibitory and facilitatory control of reproduction. EAP1 transactivated genes required for reproductive function, such as GNRH1, and repressed inhibitory genes, such as preproenkephalin. It contained a RING finger domain of the C3HC4 subclass required for this dual transcriptional activity.These results suggest that EAP1 is a transcriptional regulator that, acting within the neuroendocrine brain, contributes to controlling female reproductive function.
SIGNOR-267154
P08254
Q9UGU0
0
transcriptional regulation
up-regulates quantity by expression
0.416
This result indicates that expression of SPBP is sufficient to transactivate a minimal promoter containing a single copy of the SPRE, as well as the full-length stromelysin promoter.
SIGNOR-266223
P27695
Q00987
0
ubiquitination
down-regulates quantity by destabilization
0.416
Once the reaction proceeds beyond the monoubiquitination stage, MDM2 polyubiquitinates APE1 for degradation.
SIGNOR-278555
P55075
P19622
0
transcriptional regulation
down-regulates quantity by repression
0.416
Our results in ES cells suggest that Engrailed inhibits Fgf8 expression in the absence of Pbx1. We identified single Engrailed- and Pbx-binding sites in the Fgf8 intron that inhibit expression of Fgf8 in mouse ES cells, but that together can allow full Fgf8 expression.
SIGNOR-265801
Q05193
Q13627
0
phosphorylation
down-regulates
0.416
Mnb/dyrk1a was shown to phosphorylate dynamin 1 and alter its interactions with several sh3 domain-containing endocytic accessory proteins.Phosphorylation At s795 and s857 was confirmed in full-length dynamin 1, and s857 was subsequently determined to be the major mnb/dyrk1a phosphorylation site in vitro. Phosphorylation at s857 was demonstrated to be the basis for altering the binding of dynamin 1 to amphiphysin 1 and grb 2 by site-directed mutants mimicking phosphorylation.
SIGNOR-127440
O43734
Q14164
0
phosphorylation
up-regulates activity
0.416
IKKi was required for IL-17-induced phosphorylation of Act1 on Ser311, adjacent to a putative TRAF-binding motif. Substitution of the serine at position 311 with alanine impaired the IL-17-mediated Act1-TRAF2-TRAF5 interaction and gene expression. Thus, IKKi is a kinase newly identified as modulating IL-17 signaling through its effect on Act1 phosphorylation and consequent function.
SIGNOR-262883
Q13882
P60484
0
dephosphorylation
down-regulates activity
0.416
PTEN inhibits PTK6 activity and downstream signaling in prostate cancer cells.|Using an in vitro phosphatase assay, we observed that PTEN was able to dephosphorylate PTK6 at tyrosine residue 342 in a dose dependent manner.
SIGNOR-276975
P42336
Q6ZUJ8
0
binding
up-regulates
0.416
This accumulation of tyrosine-phosphorylated bcap at the membrane with its associated pi3k would then allow for the catalysis of ptd ins p2 to ptd ins p3 and downstream pi3k-dependent signals. Therefore, bcap is an essential activator of the pi3k pathway downstream of tlr signaling, providing a brake to limit potentially pathogenic excessive tlr responses.
SIGNOR-191664
Q16539
O00206
0
phosphorylation
up-regulates activity
0.416
Binding of S100A9 to TLR4 stimulates the phosphorylation of JNK, ERK1/2, and p38 MAPK, which leads to the activation of c-Jun, CREB, and NF-κB. Activation of neutrophils by S100A9 also proceeds via p38 MAPK, JNK, and ERK1/2 phosphorylation.
SIGNOR-263652
P08581
O15409
0
transcriptional regulation
down-regulates quantity by repression
0.416
FOXP2 binds directly to the 5' regulatory region of MET, and overexpression of FOXP2 results in transcriptional repression of MET. The expression of MET in restricted human neocortical regions, and its regulation in part by FOXP2, is consistent with genetic evidence for MET contributing to ASD risk.
SIGNOR-269054
P50542
P62837
0
ubiquitination
down-regulates quantity by destabilization
0.416
Here we report on the identification of the protein-ubiquitin ligases that are responsible for the ubiquitination of the peroxisomal protein import receptor Pex5. It is demonstrated that each of the three RING peroxins Pex2, Pex10, and Pex12 exhibits ubiquitin-protein isopeptide ligase activity. Our results show that Pex2 mediates the Ubc4-dependent polyubiquitination whereas Pex12 facilitates the Pex4-dependent monoubiquitination of Pex5.While polyubiquitinated Pex5 is degraded by the proteasome, monoubiquitinated Pex5 is destined for a new round of the receptor cycle.
SIGNOR-253023
P00519
Q13177
0
phosphorylation
down-regulates
0.415
The interaction of c-abl with the abl interactor protein abi2 is shown to be negatively regulated by phosphorylation of serines 637 and 638. These serines are adjacent to the pxxp motif (ptppkrs637s638sfr) that binds the sh3 domain of abi. phosphorylation of c-abl by pak2 inhibits the interaction between the sh3 domain of abi2 and the pxxp motif of c-abl.
SIGNOR-160215
Q13153
Q8N1N5
0
binding
up-regulates
0.415
We further found that cripak interacted with pak1 through the n-terminal regulatory domain and inhibited pak1 kinase in both in vitro and in vivo assays.
SIGNOR-141467
P63096
Q9H1C0
0
binding
up-regulates activity
0.415
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-256718
Q9NS91
O76064
0
binding
up-regulates
0.415
Rnf8 depletion also significantly reduced the accumulation of rad18 to chromatin fraction after ir
SIGNOR-185593