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P19419
O75582
0
phosphorylation
up-regulates
0.2
Phosphorylation on ser383 and ser389 of elk-1 by mapk enhances this basal binding but, most importantly, elk-1 exhibits new interactions with p300.
SIGNOR-85514
O14777
Q96GD4
0
phosphorylation
down-regulates
0.848
To determine whether the combinatorial regulation of the kmn network by aurora b observed in vitro is critical to controlling kinetochore-microtubule attachments in vivo, we next investigated the effect of the phosphomimetic (to aspartate) and nonphosphorylatable (to alanine) mutants of dsn1, knl1, and ndc80 in vertebrate cells. We predicted that both types of mutations in critical phosphorylation sites would affect chromosome segregation, since preventing the inactivation of inappropriately attached kinetochores by aurora b (in the nonphosphorylatable mutant) or constitutively inactivating this attachment (in the phosphomimetic mutant).
SIGNOR-165558
P42336
Q06187
1
phosphorylation
up-regulates activity
0.514
Activation of Btk occurs by transphosphorylation of tyrosine 551 in the catalytic domain, resulting in a dramatic increase in the catalytic activity of the kinase (11, 12, 13). This allows for autophosphorylation at tyrosine 223 in the SH3 domain (14). Both Lyn and Syk have been demonstrated to be involved in BCR-mediated Btk activation (11), but processes that drive colocalization of these kinases are ill-defined. Recently, it was suggested that phosphatidylinositol 3-kinase (PI3-K) is also involved in Btk activation
SIGNOR-249610
Q9UJU2
Q8WVD3
0
polyubiquitination
down-regulates quantity by destabilization
0.307
Here, we show that NARF induces the ubiquitylation of TCF/LEF in vitro and in vivo, and functions as an E3 ubiquitin-ligase that specifically cooperates with the E2 conjugating enzyme E2-25K. We found that NLK augmented NARF binding and ubiquitylation of TCF/LEF, and this required NLK kinase activity. The ubiquitylated TCF/LEF was subsequently degraded by the proteasome.
SIGNOR-271595
Q14116
Q13478
2
binding
up-regulates
0.835
Acpl was required for il-18 responsiveness in terms of nf?B Induction and jnk activation
SIGNOR-60991
O43524
Q08999
1
transcriptional regulation
up-regulates quantity
0.291
Here we show that the Forkheads AFX (FOXO4) and FKHR-L1 (FOXO3a) also directly control transcription of the retinoblastoma-like p130 protein and cause upregulation of p130 protein expression.
SIGNOR-238606
O14757
Q9Y294
1
phosphorylation
up-regulates activity
0.414
Chk1 activated by ataxia telangiectasia mutated (ATM) kinase on DNA breaks in G1 promotes NHEJ through direct phosphorylation of ASF1A at Ser-166. ASF1A phosphorylated at Ser-166 interacts with the repair protein MDC1 and thus enhances MDC1's interaction with ATM and the stable localization of ATM at DNA breaks.
SIGNOR-277620
Q15831
P60484
1
phosphorylation
down-regulates activity
0.604
The C-terminal tail of PTEN is also the target of mutations in tumors. As mentioned, this region contains the main phosphorylation sites mapped to residues Ser362, Thr366, Ser370, Ser380, Thr382, Thr383, and Ser385, and the kinases involved are casein kinase 2 (CK2), GSK3_, LKB1, and MAST.84,97-101 The phosphorylation of the tail has been shown to enhance PTEN stability but at the same time decrease its phosphatase activity
SIGNOR-161118
Q96P20
P07948
0
phosphorylation
down-regulates
0.29
Lyn phosphorylates NLRP3 at Tyr 918 and controls NLRP3 ubiquitination.|Therefore, our data collectively indicate that Lyn inhibits the NLRP3 inflammasome in vivo.
SIGNOR-278485
P04843
Q8WXH4
0
polyubiquitination
down-regulates quantity by destabilization
0.357
We also demonstrated that ASB11 is a novel endoplasmic reticulum-associated ubiquitin ligase with the ability to interact and promote the ubiquitination of Ribophorin 1, an integral protein of the oligosaccharyltransferase (OST) glycosylation complex. Moreover, expression of ASB11 can increase Ribophorin 1 protein turnover in vivo. 
SIGNOR-272057
O43638
P98177
1
transcriptional regulation
down-regulates quantity by repression
0.2
Fkhl18 suppressed the transcriptional activity of FoxO3a and FoxO4.
SIGNOR-261611
Q14493
A0A2R8Y619
1
translation regulation
up-regulates quantity by expression
0.2
Synthesis of mature histone mRNA requires only a single processing reaction: an endonucleolytic cleavage between a conserved stem-loop and a purine-rich downstream element to form the 3' end. The stem-loop binding protein (SLBP) is required for processing, and following processing, histone mRNA is transported to the cytoplasm, where SLBP participates in translation of the histone mRNA|We used radiolabeled probes generated by PCR targeting the open reading frame (ORF) to detect histones H2A, H2B, H3, H4, and H1 and used 7SK snRNA as a loading control (Fig. 2A). The abundance of histone H2A, H2B, H3, and H4 mRNAs is reduced to 37% to 70% of control levels in the SLBP knockdown cells when compared to the C2 control.
SIGNOR-265380
P27361
P19793
1
phosphorylation
down-regulates activity
0.523
In colon cancer cells, the Ras/mitogen‐activated protein kinase (MAPK) pathway phosphorylates RXRalpha, which impairs its function as a heterodimeric partner for PPARgamma|A point‐mutated RXRalpha T82A/S260A, which mimics the unphosphorylated form of RXRalpha, can form a heterodimer with PPARgamma and thereby activate target gene expression by binding to the PPRE
SIGNOR-88662
P40424
Q96JM2
2
binding
down-regulates activity
0.308
We demonstrated that ZFPIP is expressed in embryonic female genital tract but also in other PBX1 expression domains such as the developing head and the limb buds. We further showed that ZFPIP is able to bind physically and in vivo to PBX1 and moreover, that it prevents the binding of HOXA9/PBX complexes to their consensus DNA site. We suggest that ZFPIP is a new type of PBX1 partner that could participate in PBX1 function during several developmental pathways.
SIGNOR-264477
Q13153
Q13586
1
phosphorylation
up-regulates activity
0.354
Taken together, our data demonstrate that PAK1 interacts with STIM1 and phosphorylates specific STIM1 cytosolic domains.
SIGNOR-279244
P01111
Q8TEU7
0
guanine nucleotide exchange factor
up-regulates
0.331
Gefs catalyse the transition from gdp-bound, inactive ras to gtp-bound, active ras.
SIGNOR-183799
P31749
P12755
1
phosphorylation
down-regulates
0.337
The phosphorylation of ski at threonine 458 is induced by akt pathway activators including insulin, insulin-like growth factor-1, and hepatocyte growth factor. The phosphorylation of ski causes its destabilization and reduces ski-mediated inhibition of expression of another negative regulator of tgf-beta, smad7
SIGNOR-252527
P19838
P62877
0
ubiquitination
up-regulates
0.451
The scf-betatrcp complex is responsible for the ubiquitination of p100 and p105 following their phosphorylation by ikk.
SIGNOR-106781
Q00535
Q15078
2
phosphorylation
down-regulates
0.943
P35 phosphorylation by cdk5 interferes with the microtubule-binding and polymerizing activities of p35. Using a mutational approach, we found that only phosphorylation at thr-138, one of the two residues primarily phosphorylated in vivo, inhibits the polymerizing activity
SIGNOR-177967
O94921
P37802
1
phosphorylation
down-regulates activity
0.315
This newly identified oncogene–tumor suppressor cascade, where oncogenic PFTK1 inactivates a tumor suppressor gene TAGLN2 via phosphorylation|. Our data therefore underline much importance for S83 and S163 residues on TAGLN2 in its actin-binding capacity.
SIGNOR-265103
Q13283
P0DTC9
2
binding
down-regulates activity
null
N targets stress granule protein G3BP1, an essential antiviral protein which is known to induce innate immune response through multiple mechanisms
SIGNOR-260749
P06733
O75385
0
phosphorylation
down-regulates activity
0.2
Here, we demonstrate that, during deprivation of amino acid and growth factors, ULK1/2 directly phosphorylate key glycolytic enzymes including hexokinase (HK), phosphofructokinase 1 (PFK1), enolase 1 (ENO1), and the gluconeogenic enzyme fructose-1,6-bisphosphatase (FBP1).Phosphorylation of these enzymes leads to enhanced HK activity to sustain glucose uptake but reduced activity of FBP1 to block the gluconeogenic route and reduced activity of PFK1 and ENO1 to moderate drop of glucose-6-phosphate and to repartition more carbon flux to pentose phosphate pathway (PPP), maintaining cellular energy and redox homeostasis at cellular and organismal levels.Similar results were also obtained using ULK2 as the kinase (data not shown).
SIGNOR-274029
P14138
P24530
2
binding
up-regulates
0.798
These results demonstrate that lys-161 of the receptor is important for high affinity binding with et-3 which, in part, confers the non-selective binding characteristics of the etb receptor for et isopeptides.
SIGNOR-36017
P06748
O94992
2
binding
down-regulates activity
0.385
We identified NPM as a novel HEXIM1-binding protein. NPM functioned as a negative regulator of HEXIM1. cytoplasmic localization of endogenous HEXIM1 is detected in an acute myeloid leukemia (AML) cell line containing the NPMc+ mutation, suggesting the physiological importance of HEXIM1-NPMc+ interaction.
SIGNOR-260134
O15217
P0DMV8
0
relocalization
up-regulates activity
0.2
Model showing Ser189/Thr193 protein kinase dependent phosphorylation of GST A4‐4 has increased affinity for chaperone Hsp70 which activates mitochondrial competent import signals for GSTA4‐4. |Protein kinase A mediated phosphorylation of serine residues of CYPs increases the affinity of proteins for binding to cytoplasmic chaperones such as heat shock proteins (Hsp), Hsp70/Hsp90, resulting in increased mitochondrial translocation
SIGNOR-264799
Q969V5
O75385
1
ubiquitination
down-regulates quantity
0.347
MUL1 promotes ubiquitination of ULK1.|Overexpression of MUL1 and treatment with selenite promotes ULK1 degradation through the proteasome pathway.
SIGNOR-278759
Q9NYY1
Q8N6P7
2
binding
up-regulates
0.606
An IL-20 receptor was identified as a heterodimer of two orphan class II cytokine receptor subunits. Both receptor subunits are expressed in skin and are dramatically upregulated in psoriatic skin. Taken together, these results demonstrate a role in epidermal function and psoriasis for IL-20, a novel cytokine identified solely by bioinformatics analysis.
SIGNOR-151877
Q13043
Q9NRM7
1
phosphorylation
up-regulates
0.636
Activation of mst1/2 leads to phosphorylation and activation of their direct substrates, lats1/2.
SIGNOR-175821
P84022
O15194
0
dephosphorylation
up-regulates activity
0.424
Dephosphorylation of Smad2/3 Linkers by SCP2 and SCP3|MAPK-mediated linker phosphorylation appears to have a dual role in Smad2/3 regulation. Mitogens and hyperactive Ras result in extracellular signal-regulated kinase (ERK)-mediated phosphorylation of Smad3 at Ser-204, Ser-208, and Thr-179 and of Smad2 at Ser-245/250/255 and Thr-220. Mutation of these sites increases the ability of Smad3 to activate target genes, suggesting that MAPK phosphorylation of Smad3 is inhibitory (11, 12). However, in contrast, ERK-dependent phosphorylation of Smad2 at Thr-8 enhances its transcriptional activity
SIGNOR-248306
P12931
Q86UR1
1
phosphorylation
up-regulates
0.408
Here, we show that the interaction of noxa1 and tks proteins is dependent on src activity. Interestingly, the abolishment of src-mediated phosphorylation of tyr110 on noxa1 and of tyr508 on tks4 blocks their binding and decreases nox1-dependent ros generation.
SIGNOR-168545
P38398
Q13085
2
binding
down-regulates activity
0.548
ACCA binds BRCA1 when phosphorylated onSer1263, thus supporting a model in which controlof lipid synthesis would be mediated at least in part,viaphosphorylation of the Ser1263.
SIGNOR-267474
O14944
P21860
2
binding
up-regulates
0.591
For example, betacellulin binds to and activates both erbb1 and erbb4, whereas epiregulin binds to erbb1, erbb3 and erbb4
SIGNOR-191785
P32243
P48436
2
binding
up-regulates activity
0.349
BEST1 promoter activity was increased by SOX9 overexpression and decreased by siRNA-mediated SOX9 knockdown. SOX9 physically interacted with MITF and OTX2 and orchestrated synergistic activation of the BEST1 promoter with the paired SOX site playing essential roles.
SIGNOR-255184
Q15311
P17252
0
phosphorylation
up-regulates activity
0.389
In deletion mutant analyses of potential phosphorylation sites in RLIP76, we identified T297 and S509 as targets for phosphorylation by PKCalpha. Phosphorylation at T297 increased doxorubicin (DOX)-transport activity approximately 2-fold for RLIP76 purified from recombinant source
SIGNOR-263164
Q8IXJ6
P35558
1
deacetylation
up-regulates quantity by stabilization
0.426
Conversely, SIRT2 deacetylates and stabilizes PEPCK1.|Furthermore, coexpression of P300 increased acetylation levels of wild-type PEPCK1, but not PEPCK13K/R, indicating that P300 acts on these lysine residues of PEPCK1
SIGNOR-267599
Q4KMG0
O60271
2
binding
up-regulates activity
0.498
In this study, we report that the cdo intracellular region interacts with jlp, a scaffold protein for the p38alpha/beta mapk pathway.
SIGNOR-150282
Q9NYY3
Q16143
1
phosphorylation
down-regulates activity
0.248
Polo-like kinase (plk) family (plk1, plk2, and plk3) phosphorylate alpha-syn and beta-syn specifically at ser-129 and ser-118, respectively. Polo-like kinase 2 (plk2) phosphorylates alpha-synuclein at serine 129 in central nervous system. The membrane association of pd-linked mutant alpha -synuclein, but not wild-type -synuclein, was increased by serine 129 phosphorylation.
SIGNOR-189049
O14920
P53350
0
phosphorylation
down-regulates
0.343
Plk1 phosphorylates serines 733, 740, and 750 in the gammabd of ikkbeta in vitro. Phosphorylating gammabd with plk1 decreased its affinity for ikkgamma
SIGNOR-181802
Q05655
O14939
1
phosphorylation
up-regulates
0.463
Finally, we show that thr566 of pld2 is directly phosphorylated by pkc and that pld2 mutation in this region prevents pld2 activation, pld2 translocation to the edge of lamellipodia, rac translocation, and cell spreading after integrin activation
SIGNOR-167577
Q8N4C8
Q96P20
1
phosphorylation
up-regulates activity
0.2
MINK1-mediated NLRP3 phosphorylation at Ser725 is critical for inflammasome activation.|These results suggest that MINK1 promotes NLRP3 inflammasome activation via direct interaction with NLRP3.|To determine whether MINK1 phosphorylated NLRP3 directly, we used Phos-tag SDS\u2013PAGE to detect the phosphorylation of NLRP3.
SIGNOR-280042
P16104
Q13043
0
phosphorylation
up-regulates activity
0.2
Western blot and kinase assay results with a mutant S139A H2AX confirmed that MST1 phosphorylates H2AX at Ser-139.
SIGNOR-278457
Q03113
Q15077
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-257343
Q00535
O43464
1
phosphorylation
up-regulates
0.456
Here we report that cyclin-dependent kinase-5 (cdk5), a kinase implicated in the pathogenesis of several neurodegenerative diseases, is responsible for phosphorylating htra2 at s400.We have shown previously that phosphomimetic mutants of htra2 at s400 result in increased proteolytic activity and contribute to enhanced resistance to mitochondrial stress
SIGNOR-174598
P17676
Q15418
0
phosphorylation
up-regulates activity
0.683
13 The data presented support previous findings that C/EBPbeta can be a molecular target of RSK1, 16 but provide the first indication that RSK1 can phosphorylate and activate C/EBPbeta to mediate the IL-6 signalling events in cholangiocarcinoma.|As mentioned above, RSK1 has been shown to activate C/EBPbeta in hepatic stellate cells in an experimental model of liver fibrosis.
SIGNOR-280112
P22455
P05230
2
binding
up-regulates
0.827
Our results establish an fgf binding profile for fgfr-4 with afgf having the highest affinity, followed by k-fgf/hst-1 and bfgf. In addition, fgf-6 was found to bind to fgfr-4 in ligand competition experiments. Ligands binding to fgfr-4 induced receptor autophosphorylation and phosphorylation of a set of cellular polypeptides.
SIGNOR-18454
O15111
Q92793
2
binding
up-regulates
0.518
Ikk-alpha interacts with creb-binding protein and in conjunction with rel a is recruited to nf-kappab-responsive promoters and mediates the cytokine-induced phosphorylation and subsequent acetylation of specific residues in histone h3.
SIGNOR-101539
Q9Y478
O75385
1
phosphorylation
up-regulates
0.537
Ampk and ulk1 interact and that the latter is phosphorylated by ampk. This phosphorylation leads to the direct activation of ulk1 by ampk bypassing mtor-inhibition
SIGNOR-173044
Q09472
O15105
1
acetylation
up-regulates
0.464
Here we present evidence that smad7 interacts with the transcriptional coactivator p300, resulting in acetylation of smad7 on two lysine residues in its n terminus. Acetylation or mutation of these lysine residues stabilizes smad7 and protects it from tgfbeta-induced degradation. we have recently shown that smad7 is acetylated on lysine residues 64 and 70 by p300
SIGNOR-95169
P12931
O15524
1
phosphorylation
down-regulates activity
0.45
SOCS1 is phosphorylated on Y80 by SRC family kinase members SRC and YES1.
SIGNOR-276857
O95837
Q96P68
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-257417
P25098
P62166
2
binding
down-regulates activity
0.2
Here we show that the neuronal calcium sensor-1 (NCS-1) can mediate desensitization of D2 dopamine receptors. Analysis of D2 receptors expressed in human embryonic kidney 293 cells indicates that NCS-1 attenuates agonist-induced receptor internalization via a mechanism that involves a reduction in D2 receptor phosphorylation. Coimmunoprecipitation experiments from striatal neurons reveal that NCS-1 is found in association with both the D2 receptor and G-protein-coupled receptor kinase 2, a regulator of D2 receptor desensitization.
SIGNOR-263965
P05412
Q92630
0
phosphorylation
down-regulates
0.256
Degradation of c-jun/c-myc is a critical process for the g(1)/s transition, which is initiated upon phosphorylation by glycogen synthase kinase 3 ? (gsk3?). However, a specific kinase or kinases responsible for priming phosphorylation events that precede this gsk3? Modification has not been definitively identified. Here, we found that the dual-specificity tyrosine phosphorylation-regulated kinase dyrk2 functions as a priming kinase of c-jun and c-myc.The finding that kinase-active dyrk2 phosphorylated gst_c-jun210_310-wt by detection with an anti_phospho_c-jun(ser243) antibody demonstrated that dyrk2 is a ser243 kinase in vitro
SIGNOR-195771
Q17RS7
Q8TEB1
2
binding
down-regulates quantity by destabilization
0.2
(WDR23) isoforms differentially ubiquitinate (GEN1). In the presence of the necessary components for a successful ubiquitination reaction (CUL4A-DDB1-WDR23 complex, UBE1, UBE2D1, ubiquitin, and ATP) GEN1 receives the addition of ubiquitin in a time dependent manner.
SIGNOR-272258
P16298
P0DP25
2
binding
up-regulates
0.576
Calcium-bound calmodulin associates with calcineurin (cn), releasing the phosphatase from the repressive effects on an autoinhibitory domain.
SIGNOR-266338
P07550
P06213
0
phosphorylation
down-regulates activity
0.377
Insulin (10 nM)-stimulated rIR-catalyzed phosphorylation of β2-adrenergic receptor peptides was found prominently in peptides L339 (Tyr350 and Tyr354), T362 (Tyr364), and to a lesser extent peptides Y132 (Tyr132 and Tyr141), and I135 (Tyr141). G-protein-linked receptors and intrinsic tyrosine-kinase growth receptors represent two prominent modalities in cell signaling. Cross-regulation among members of both receptor superfamilies has been reported, including the counter-regulatory effects of insulin on β-adrenergic catecholamine action. Cells stimulated by insulin show loss of function and increased phosphotyrosine content of β2-adrenergic receptors.
SIGNOR-251302
Q07912
Q9Y4C1
1
phosphorylation
down-regulates activity
0.37
We report that ACK1 phosphorylates the ER co-activator, KDM3A, a H3K9 demethylase, at an evolutionary conserved tyrosine 1114 site in a heregulin-dependent manner, even in the presence of tamoxifen.
SIGNOR-276842
P56159
Q99748
2
binding
up-regulates
0.738
A receptor complex comprised of trnr1 (gdnfr alpha) and ret was recently identified and found to be capable of mediating both gdnf and ntn signaling
SIGNOR-49119
Q13237
Q01970
1
phosphorylation
down-regulates activity
0.525
PKG can directly phosphorylate PLC-beta2 and PLC-beta3 in vitro with purified proteins and in vivo with metabolic labeling. Phosphorylation of PLC-beta leads to the inhibition of G-protein-activated PLC-beta3 activity by 50-70% in COS-7 cell transfection assays. By using phosphopeptide mapping and site-directed mutagenesis, we further identified two key phosphorylation sites for the regulation of PLC-beta3 by PKG (Ser(26) and Ser(1105)). Mutation at these two sites (S26A and S1105A) of PLC-beta3 completely blocked the phosphorylation of PLC-beta3 protein catalyzed by PKG.
SIGNOR-249078
Q02750
P27361
1
phosphorylation
up-regulates
0.752
Mek1 as indicated by extensive phosphorylation of erk1 and erk2 during the initial 2 h of adipogenesis.
SIGNOR-210176
P34925
Q9H461
2
binding
up-regulates
0.711
Interaction between ryk and fz has been reported, suggesting that the two proteins may form a multi-receptor complex signalling through the canonical pathway
SIGNOR-150010
Q13164
Q05397
1
phosphorylation
up-regulates activity
0.291
Remarkably, the reduction in ERK5 expression correlated with decreased p-FAK(Tyr397) staining, consistent with the requirement of ERK5 for mediating FAK activation in vivo (Fig. 6C).|We confirmed that JWG-045, a novel pharmacological inhibitor of ERK5 exhibiting significantly reduced affinity for BRD4 compared with XMD8-92 (25, 26), did not suppress FAK phosphorylation at Tyr397 in MDA-MB-231 cells (Supplementary Fig. S3B and C).
SIGNOR-279304
Q8TE73
Q96M91
2
binding
up-regulates activity
0.2
CFAP53 likely facilitates the transport of TTC25 and the dyneins into cilia. CFAP53 at the centriolar satellites may form a complex with TTC25 and ODAs, including DNAH5 and DNAH11, and regulate their trafficking into the cilium (Fig 10B).
SIGNOR-265544
P11940
Q12986
2
binding
up-regulates activity
0.344
We identifiednew protein partners of NFX1-123, including several cytoplasmic poly(A) binding proteins (PABPCs) thatinteracted with NFX1-123 through its N-terminal PAM2 motif. Central to our findings were our observations that PABPCs copurify with NFX1-123, that a PAM2 motif is present in NFX1, and this motif and the PABPCs are important in the enhancement of hTERT activity by NFX1-123.
SIGNOR-261052
Q86T82
P24941
0
phosphorylation
up-regulates activity
0.447
There is positive reinforcement of this signaling mechanism because phosphorylation of Ser628 by CDK2/cyclin E and CDK2/cyclin A complexes produces maximal USP37 activity
SIGNOR-265045
Q16576
O14929
2
binding
up-regulates activity
0.898
AMPK increased HAT1 activity through phosphorylation of HAT1-Ser190 and RBBP7-Ser314| interaction between RBBP7 and HAT1 is required for acetyltransferase activity
SIGNOR-264786
Q06830
Q96KB5
0
phosphorylation
up-regulates
0.26
We report that prx1 is newly discovered direct target of topk. Our results demonstrate that topk phosphorylation of prx1 at ser-32 inhibits uvb-induced apoptosis in rpmi7951 melanoma cells by increasing prx1 peroxidase activity and decreasing the intracellular accumulation of h2o2.
SIGNOR-166901
P78352
Q9UIJ5
0
palmitoylation
up-regulates activity
0.379
Plasma membrane targeting of DHHC2 palmitoyltransferase rapidly recruited PSD-95 to the plasma membrane and proved essential for postsynaptic nanodomain formation.
SIGNOR-261290
P06241
P54646
1
phosphorylation
down-regulates activity
0.257
Here we identified that Fyn phosphorylates the α subunit of AMPK on Y436 and inhibits AMPK enzymatic activity without altering the assembly state of the AMPK heterotrimeric complex. 
SIGNOR-277279
P16104
O15297
0
dephosphorylation
down-regulates
0.2
Wild-type p53-induced phosphatase 1 dephosphorylates histone variant gamma-h2ax and suppresses dna double strand break repair. Here, we demonstrate that the wild-type p53-induced phosphatase 1 (wip1) also dephosphorylates gamma-h2ax at serine 139 in vitro and in vivo.
SIGNOR-163693
Q9HC97
Q03113
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-257204
Q9UQF2
O14733
2
binding
up-regulates
0.722
Both jip1 and jip2 selectively bind the mapkk isoform mkk7.
SIGNOR-70848
P17612
P27708
1
phosphorylation
down-regulates
0.307
Protein kinase a phosphorylation at thr456 of the multifunctional protein cad antagonizes activation by the map kinase cascade.
SIGNOR-151816
Q05397
P49023
2
binding
up-regulates activity
0.914
Focal adhesion kinase (FAK) is activated by growth factors and integrins during migration, and functions as a receptor-proximal regulator of cell motility. At contacts between cells and the extracellular matrix, FAK functions as an adaptor protein to recruit other focal contact proteins or their regulators, which affects the assembly or disassembly of focal contacts. Whereas it was first hypothesized that FAK might bind directly to the cytoplasmic tails of integrins, accumulated evidence supports an indirect association of FAK with integrins through binding to integrin-associated proteins such as paxillin and talin.
SIGNOR-257732
P12931
Q9NPF5
1
phosphorylation
down-regulates activity
0.2
C-Src phosphorylates DMAP1 at Tyr246 and disrupts Bub3/DMAP1 complex formation.
SIGNOR-279431
Q8TDX7
Q15058
1
phosphorylation
up-regulates activity
0.371
Nek7 direct phosphorylation is required for the anaphase localization of Kif14. we generated an EGFP-Kif14-5A construct in which Ser56, Ser607, Ser1217, Ser1219, and Ser1220 were all mutated to Ala. When transfected into HeLa cells, EGFP-Kif14-5A was expressed to similar levels as WT Kif14 (Fig. S3 C), but its localization to the central spindle in anaphase cells was completely abolished (Fig. 6 C).
SIGNOR-266420
O14757
O75461
1
phosphorylation
down-regulates activity
0.574
the checkpoint kinase Chk1 phosphorylates E2F6 leading to its dissociation from promoters.
SIGNOR-266371
Q09472
Q06413
2
binding
up-regulates
0.742
Once released from associated repressors, MEF2 is bound by the p300 coactivator, which possesses histone acetyltransferase activity. Thus, the net result of CaMK signaling to MEF2 complexes is increased histone acetylation (Ac), which relaxes chromatin and stimulates MEF2 target gene transcription.
SIGNOR-232159
P28702
P37231
2
binding
up-regulates
0.668
Although the three ppar subtypes are closely related and bind to similar dna response elements as heterodimers with the 9-cis retinoic acid receptor rxr, each subserves a distinct physiology
SIGNOR-105454
P22681
Q96JA1
2
ubiquitination
down-regulates
0.589
We report upregulation of lrig1 transcript and protein upon egf stimulation, and physical association of the encoded protein with the four egfr orthologs of mammals. Upregulation of lrig1 is followed by enhanced ubiquitylation and degradation of egfr. The underlying mechanism involves recruitment of c-cbl, an e3 ubiquitin ligase that simultaneously ubiquitylates egfr and lrig1 and sorts them for degradation.
SIGNOR-127289
Q9UGI0
Q9P2Y5
1
deubiquitination
up-regulates activity
0.2
Here we report that UVRAG is ubiquitinated by SMURF1 at lysine residues 517 and 559, which decreases the association of UVRAG with RUBCN and promotes autophagosome maturation. However, the deubiquitinase ZRANB1 specifically cleaves SMURF1-induced K29 and K33-linked polyubiquitin chains from UVRAG, thereby increasing the binding of UVRAG to RUBCN and inhibiting autophagy flux. 
SIGNOR-273651
Q9NYY3
Q9P253
0
ubiquitination
down-regulates quantity by destabilization
0.2
VPS18 Ubiquitylates SNK in Vitro and in Vivo. The ubiquitylation of proteins by hVPS18 was selectively mediated by UbcH4. 
SIGNOR-271550
Q96EZ8
O14965
0
phosphorylation
up-regulates activity
0.316
We conclude that Aurora-A phosphorylates MCRS1 on Ser35/36 specifically during mitosis.
SIGNOR-278232
O14757
P84243
1
phosphorylation
down-regulates activity
0.2
We identify chk1 as the kinase responsible for h3-t11 phosphorylation. H3-t11 phosphorylation occurs throughout the cell cycle and is chk1 dependent in vivo.Phosphorylation at thr-12 (h3t11ph) by pkn1 is a specific tag for epigenetic transcriptional activation that promotes demethylation of lys-10 (h3k9me) by kdm4c/jmjd2c.
SIGNOR-160557
P63000
O60890
0
gtpase-activating protein
up-regulates activity
0.591
OPHN-1 colocalized with the actin cytoskeleton in neuronal and glial cells. We have previously shown that OPHN1 stimulates GTPases activity of RhoA, Cdc42, and Rac1 in vitro
SIGNOR-268399
P05305
Q14119
0
transcriptional regulation
up-regulates quantity by expression
0.276
Vascular endothelial zinc finger 1 (Vezf1)/DB1 is a recently identified zinc finger-containing protein that is expressed specifically within endothelial cells during development. In this report, we demonstrate that Vezf1/DB1 is a nuclear localizing protein that potently and specifically activates transcription mediated by the human endothelin-1 promoter, in a Tax-independent manner, in transient transfection assays. Regulation of endothelin-1 promoter activity by Vezf1/DB1 provides a mechanism for endothelin-1 expression in the vascular endothelium during development and to maintain vascular tone
SIGNOR-266884
Q99835
P25098
0
phosphorylation
up-regulates
0.2
We find that two molecules interact with mammalian smo in an activation-dependent manner: g protein-coupled receptor kinase 2 (grk2) leads to phosphorylation of smo, and beta-arrestin 2 fused to green fluorescent protein interacts with smo. Ck1a, grk2, and another still-unidentified protein kinase phosphorylate the c-tail of mammalian smo in the presence of hh proteins
SIGNOR-174539
Q9UL15
P0DMV9
2
binding
down-regulates activity
0.683
Here, we show that BAG5, a BAG domain-containing family member, interacts with both Hsp70 and parkin with deleterious functional consequences. Through these interactions, BAG5 inhibits Hsp70 chaperone activity and parkin E3 ubiquitin ligase activity; Thus, BAG5 interacts with Hsp70 in vitro and in vivo, and substitution of select residues within the BAG domains is sufficient to abolish this interaction.
SIGNOR-261197
O15530
P23443
2
phosphorylation
up-regulates
0.727
A regulatory link between p70s6k and pkb was demonstrated, as pdk1 was found to selectively phosphorylate p70s6k at thr229. More importantly, pdk1 activated p70s6k in vitro and in vivo, whereas the catalytically inactive pdk1 blocked insulin-induced activation of p70s6k. 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. Phosphorylation and activation of p70s6k by pdk1.
SIGNOR-188907
P42574
P98170
0
ubiquitination
down-regulates quantity by destabilization
0.939
Xiap promotes the degradation of active-form caspase-3, but not procaspase-3, in living cells. Both the association of XIAP with caspase-3 and the RING finger domain of XIAP were essential for ubiquitination. XIAP promotes the degradation of caspase-3, which enhances its anti-apoptotic effect.
SIGNOR-109243
Q14938
Q9HD90
1
transcriptional regulation
up-regulates quantity
0.2
For example, within the NFI targetome, we identified 6 collagen genes, 13 genes encoding potassium channel or glutamate receptor subunits and a range of factors related to axon guidance (e.g. Slit1, Robo1, Epha4, Epha5, Epha8)
SIGNOR-268905
P03952
P14210
1
cleavage
up-regulates activity
0.323
the ability of plasma kallikrein and FXIa to activate pro-HGF in vitro raises the possibility that mediators of inflammation and blood coagulation may also regulate processes that involve the HGF/c-Met pathway, such as tissue repair and angiogenesis.Unlike other known activators, both FXIa and kallikrein processed pro-HGF by cleavage at two sites. Using N-terminal sequencing they were identified as the normal cleavage site Arg(494)-Val(495) and the novel site Arg(424)-His(425) located in the K4 domain of the alpha-chain.
SIGNOR-256513
P53667
Q9NQU5
0
phosphorylation
up-regulates activity
0.2
PAK6 bound to LIMK1 and activated it via phosphorylation at Thr-508.|These data indicated that PAK6 directly phosphorylated LIMK1 at Thr-508.
SIGNOR-278970
Q96EP1
P53350
1
polyubiquitination
down-regulates quantity by destabilization
0.468
Chfr, a mitotic stress checkpoint, plays an important role in cell cycle progression, tumor suppression and the processes that require the E3 ubiquitin ligase activity mediated by the RING finger domain. Chfr stimulates the formation of polyubiquitin chains by ub-conjugating enzymes, and induces the proteasome-dependent degradation of a number of cellular proteins including Plk1 and Aurora A.
SIGNOR-271464
P12830
P49841
0
phosphorylation
up-regulates activity
0.558
Phosphorylation of the E-cadherin Cytoplasmic Domain by CKII and GSK-3β Increases the Binding to β-catenin. pre-phosphorylation by CKII at Ser-855 and/or Ser-853 of E-cadherin is required before GSK-3β can phosphorylate at Ser-849.
SIGNOR-251225
P19838
P50591
0
post transcriptional regulation
up-regulates quantity by expression
0.302
Treatment with TRAIL increased the NF-κB transcriptional activity by approximately twofold in MDA-MB-231 cells compared to the control.
SIGNOR-277936
O76064
Q9NS91
2
binding
up-regulates
0.415
Rnf8 depletion also significantly reduced the accumulation of rad18 to chromatin fraction after ir
SIGNOR-185593
P12643
Q13253
2
binding
down-regulates
0.81
Noggin acts by binding bmps, thus preventing them from binding to their receptors (180). Noggin binds with various degrees of affinity bmp-2, -4, -5, -6, and -7, gdf-5, gdf-6, and vg1, but not other members of the tgf- family of peptides
SIGNOR-100657
Q12933
Q92844
2
binding
down-regulates activity
0.734
IKK-i phosphorylates I-TRAF. In vitro kinase assays demonstrate that IKK‐i phosphorylates I‐TRAF in the middle portion that associates with TRAF2. Interestingly, TRAF2 is freed from the I‐TRAF/TRAF2 complex after I‐TRAF phosphorylation. TRAF2 isdistributed throughout the cytoplasm, in the formof inactive an I-TRAF/TRAF2 complex
SIGNOR-262714
P61586
Q14344
2
binding
up-regulates
0.574
Ga12/13 recruitment of rho-gefs causes rhoa activation and f-actin assembly, which promotes lats1/lat2 inactivation by an unknown, but myosin-independent mechanism.
SIGNOR-192111
P24557
Q16236
0
transcriptional regulation
up-regulates quantity by expression
0.246
Ecotopic expression of NF-E2 related factors showed that Nrf2, but not Nrf1, Nrf3, or Bach1, activated TXAS promoter in a dose-dependent manner.
SIGNOR-253907