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Q9NZS9
P55061
1
polyubiquitination
down-regulates quantity by destabilization
0.392
BAR overexpression promotes BI-1 ubiquitination and proteasomal degradation.We show here that bifunctional apoptosis regulator (BAR) functions as an ER-associated RING-type E3 ligase, interacts with BI-1, and promotes proteasomal degradation of BI-1. 
SIGNOR-272778
K9N643
Q14164
2
binding
down-regulates activity
0.2
Previous studies have shown that MERS-CoV ORF4b antagonizes the early antiviral alpha/beta interferon (IFN-α/β) response, which may significantly contribute to MERS-CoV pathogenesis; however, the underlying mechanism is poorly understood. Here, we found that ORF4b in the cytoplasm could specifically bind to TANK binding kinase 1 (TBK1) and IκB kinase epsilon (IKKε), suppress the molecular interaction between mitochondrial antiviral signaling protein (MAVS) and IKKε, and inhibit IFN regulatory factor 3 (IRF3) phosphorylation and subsequent IFN-β production. these results indicate that MERS-CoV ORF4b inhibits the induction of type I IFN through a direct interaction with IKKε/TBK1 in the cytoplasm
SIGNOR-260592
P49757
P08151
2
binding
down-regulates
0.623
The consequent activation of_ itch, together with the recruitment of gli1 through direct binding with_ numb, allows gli1 to enter into the complex, resulting in gli1 ubiquitination and degradation.
SIGNOR-167841
Q53ET0
P35558
1
transcriptional regulation
up-regulates quantity
0.386
These results reveal that CRTC2 plays an essential role in the regulation of hepatic gluconeogenesis through coordinated regulation of the glucocorticoid/GR- and glucagon/CREB-signaling pathways on the key genes G6P and PEPCK.
SIGNOR-256106
P35221
P12830
2
binding
up-regulates
0.686
Additionally, the E-cadherin associated protein _-catenin regulates YAP directly by sequestering YAP/14-3-3 complexes in the cytoplasm.
SIGNOR-203468
P28482
P00533
1
phosphorylation
down-regulates activity
0.639
A growth factor-stimulated protein kinase activity that phosphorylates the epidermal growth factor (EGF) receptor at Thr669 has been described Anion-exchange chromatography demonstrated that this protein kinase activity was accounted for by two enzymes. The first peak of activity eluted from the column corresponded to the microtubule-associated protein 2 (MAP2) kinase
SIGNOR-20545
P17612
Q9NR82
1
phosphorylation
up-regulates activity
0.2
We conclude that phosphorylation of S53 on the amino terminus of Kv7.5 is essential for PKA-dependent enhancement of channel activity in response to βAR activation in vascular and airway smooth muscle cells.
SIGNOR-265980
P09017
O15550
0
transcriptional regulation
up-regulates quantity by expression
0.467
Evidence for direct involvement of UTX in regulation of HOX gene activity was demonstrated through UTX knockdown experiments in HEK293T cells in which loss of UTX induced transcriptional repression of HOXA and HOXC clusters.
SIGNOR-260030
O75581
P04628
2
binding
up-regulates activity
0.828
Ligands such as wnt1, wnt3a, and wnt8 couple the seventransmembrane domain receptor frizzled (fzd) and the single-membrane-spanning low-density receptor-related protein 5/6 (lrp5/6) to activate wnt?Beta-catenin signaling.
SIGNOR-169648
P35236
Q02156
0
phosphorylation
up-regulates activity
0.2
HePTP is phosphorylated by PKC isozymes at Ser-225 in vitro. While all isozymes phosphorylated Ser-225 predominantly and Ser-113 to a lesser extent (Fig. ​(Fig.5),5), they differed strikingly in how much 32P they incorporated into HePTP during the 30-min assay. PKC θ was the most efficient, while PKC ζ and PKC μ were clearly less potent; PKC δ, ɛ, and η were quite inefficient.
SIGNOR-276050
Q9NT99
P78352
2
binding
up-regulates activity
0.37
A possible function for the NGL–PSD-95 interaction is to couple trans-synaptic adhesion events to the recruitment of PSD-95 and other PSD-95-associated postsynaptic proteins. PSD-95 and liprin-α may be key synaptic scaffolding proteins that couple trans-synaptic adhesions to the assembly of synaptic proteins/vesicles
SIGNOR-264052
P23467
P06213
1
dephosphorylation
down-regulates
0.344
Identification of tyrosine phosphatases that dephosphorylate the insulin receptor.
SIGNOR-75997
P17676
P28845
1
transcriptional regulation
up-regulates quantity by expression
0.284
In conclusion, C/EBPalpha and C/EBPbeta control basal transcription, and TNF-alpha upregulates 11beta-HSD1, most likely by p38 MAPK-mediated increased binding of C/EBPbeta to the human HSD11B1 promoter.
SIGNOR-268972
O00451
P39905
2
binding
up-regulates
0.673
Gdnf mediates its actions through a multicomponent receptor system composed of a ligand-binding glycosyl-phosphatidylinositol (gpi)-linked protein (designated gdnfr-alpha).
SIGNOR-49184
Q8NEB9
P12931
0
phosphorylation
up-regulates activity
0.42
Given that VPS34 is activated by Src mediated tyrosine phosphorylation, we next determined if VPS34 was tyrosine phosphorylated following insulin treatment.|These data indicate that VPS34 is an effector of insulin-mediated signal transduction and that Src phosphorylation of VPS34 is required for this function.
SIGNOR-278456
Q13315
Q9Y297
1
phosphorylation
up-regulates quantity by stabilization
0.299
ATM phosphorylates and stabilizes β-TrCP1 upon DNA damage.
SIGNOR-277549
Q13541
P49841
0
phosphorylation
down-regulates activity
0.364
We found that gsk-3Beta phosphorylates and inactivates 4e-bp1, thereby increasing eif4e-dependent protein synthesis. upon stimulation, 4e-bp1 is phosphorylated on several threonine and serine residues, including thr-37/46 (36). This results in dissolution of the complex, freeing eif4e to bind with mrna cap to promote translation initiation.
SIGNOR-236026
P26927
P03952
0
cleavage
up-regulates activity
0.325
Proteolytic cleavage of pro-MSP at a single site yields active MSP, a disulfide-linked alphabeta-chain heterodimer. human kallikrein cleaved only at Arg483–Val484, the cleavage site for formation of a- and b-chains.
SIGNOR-256511
P46937
Q01538
0
transcriptional regulation
down-regulates quantity by repression
0.2
Myt1 and Myt1l transcription factors limit proliferation in GBM cells by repressing YAP1 expression. Examination of the gene expression changes in cells expressing Myt1 or Myt1l suggests that both repress expression of the YAP1 transcriptional coactivator, which functions primarily in the Hippo signaling pathway. Expression of YAP1 and its target genes is reduced in Myt-expressing cells, and there is an inverse correlation between YAP1 and MYT1/MYT1L expression in human brain cancer datasets. Together, our data suggest that Myt1 and Myt1l directly repress expression of YAP1, a protein which promotes proliferation and GBM growth.
SIGNOR-266777
O95352
P60520
2
binding
up-regulates activity
0.905
Three human atg8 (hatg8) homologs, lc3, gabarap, and gate-16, have been characterized as modifiers in reactions mediated by hatg7 (an e1-like enzyme) and hatg3 (an e2-like enzyme).
SIGNOR-142002
O15492
P00533
0
phosphorylation
up-regulates
0.415
Phosphorylation on tyr(168) was mediated by the epidermal growth factor receptor (egfr). We show here that endogenous rgs16 is phosphorylated after epidermal growth factor stimulation of mcf-7 cells.
SIGNOR-98267
P25098
P30411
1
phosphorylation
down-regulates activity
0.2
Ligand-induced phosphorylation is found at Ser339 and Ser346/Ser348 that could be executed by several G protein-coupled receptor kinases. 32P labeling of peptide 3 containing pS346/pS348 was enhanced 1.5–3-fold as compared with mock-transfected cells in the order GRK6 < GRK5 < GRK2 < GRK4α < GRK3. several endogenous GRKs may phosphorylate the B2R and that the various GRKs, even without apparent effect on total GPCR phosphorylation levels, may induce distinct phosphorylation patterns with possible functional consequences for receptor desensitization and sequestration.
SIGNOR-251445
O60260
P27695
1
ubiquitination
down-regulates quantity by destabilization
0.2
Based on these results, we conclude that Parkin directly ubiquitinates APE1.|These results indicated that degradation of APE1 by Parkin was limited compared to the transiently expressed APE1, suggesting that a large portion of APE1 is not in contact with the Parkin and PINK1 without induction of stresses such as oxidative stress.
SIGNOR-278531
Q9NRL3
Q9P2B4
2
binding
up-regulates activity
0.666
Although CTTNBP2 and CTTNBP2NL are different in terms of tissue and subcellular distribution, our data indicate that, similar to CTTNBP2NL, CTTNBP2 associates with members of the striatin family, namely striatin and zinedin. Moreover, CTTNBP2 is critical for the distribution of striatin and zinedin in dendritic spines. The role of CTTNBP2 in the regulation of the synaptic distribution of striatin and zinedin suggests that CTTNBP2 regulates synaptic signaling through PP2A.
SIGNOR-261701
Q96J92
P12931
0
phosphorylation
down-regulates activity
0.2
Using Western blot and mass spectrometry, we now identify three sites in WNK4 that are phosphorylated by c-Src: Tyr(1092), Tyr(1094), and Tyr(1143), and show that both c-Src and protein tyrosine phosphatase type 1D (PTP-1D) coimmunoprecipitate with WNK4. 
SIGNOR-276897
Q15185
P68400
0
phosphorylation
up-regulates
0.354
Several lines of evidence suggest that a cpges-activating protein kinase is ck-ii (casein kinase ii). Recombinant cpges was phosphorylated directly by and associated with ck-ii in vitro, resulting in marked reduction of the k m for the substrate pgh2.
SIGNOR-123594
P63096
Q92633
2
binding
up-regulates activity
0.555
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-256696
P10909
O14920
2
binding
down-regulates quantity by destabilization
0.2
CLU-2 is a ubiquitin binding protein (UBP) that enhances proteasome activity. sCLU promotes degradation of COMMD1. sCLU interacts with the SCF-βTrCP E3 ligase complex, serving as a scaffolding chaperone to form a multimeric protein complex that facilitates COMMD1 and I-κB ubiquitination and proteasomal degradation.
SIGNOR-271433
P68431
Q92830
0
acetylation
down-regulates activity
0.2
The HAT module within the SAGA and ADA complexes acetylates histone H3, mainly on residues K9 and K14.
SIGNOR-269602
Q9BY84
Q9UQF2
2
binding
up-regulates
0.44
Here we report that jip-1 also binds the dual-specificity phosphatases mkp7 and m3/6 via a region independent of its jnk binding domain. when mkp7 is bound to jip-1 it reduces jnk activation leading to reduced phosphorylation of the jnk target c-jun
SIGNOR-97173
Q01484
Q9UJW0
1
relocalization
up-regulates quantity
0.625
We present evidence for an ankyrin-based mechanism for sarcolemmal localization of dystrophin and beta-DG. Ankyrin-B thus is an adaptor required for sarcolemmal localization of dystrophin, as well as dynactin-4.
SIGNOR-266713
P04150
P53041
0
dephosphorylation
down-regulates activity
0.541
Estrogen inhibits glucocorticoid action via protein phosphatase 5 (PP5)-mediated glucocorticoid receptor dephosphorylation.|Inhibition of GR phosphorylation at Ser-211 is associated with decreased nuclear retention of GR and decreased gene transcription.
SIGNOR-248538
P55212
P42574
0
cleavage
up-regulates
0.619
Caspase-3 is required for the activation of caspases 6
SIGNOR-64179
P78362
P48729
0
phosphorylation
up-regulates activity
0.25
 Here, we demonstrate that mTORC1 promotes lipid biogenesis via SRPK2, a key regulator of RNA-binding SR proteins. mTORC1-activated S6K1 phosphorylates SRPK2 at Ser494, which primes Ser497 phosphorylation by CK1. These phosphorylation events promote SRPK2 nuclear translocation and phosphorylation of SR proteins.
SIGNOR-275460
P37173
P61812
2
binding
up-regulates
0.754
We show that tbetarii-b, an alternatively spliced variant of the tgf-beta type ii receptor, is a tgf-beta2 binding receptor, which mediates signalling via the smad pathway in the absence of any tgf-beta type iii receptor
SIGNOR-104795
O95999
O76064
0
ubiquitination
up-regulates quantity by stabilization
0.328
Phosphorylated and ubiquitinated BCL10 is stabilized on the damage sites through binding to and presenting UBC13 to RNF168.|We thus concluded that BCL10 is ubiquitinated mainly with K63-linked ubiquitination by RNF8.
SIGNOR-278778
P61587
Q13464
0
phosphorylation
up-regulates
0.707
We show that rock phosphorylates endogenous rhoe at serine 11 upon cell stimulation with platelet-derived growth factor. Phosphorylation has no effect on rhoe binding to rock i, but instead increases rhoe protein stability.
SIGNOR-134703
P10275
O15164
2
binding
up-regulates
0.396
We found that trim24/transcriptional intermediary factor 1alpha (tif1alpha), which is known as a ligand-dependent nuclear receptor co-regulator, interacts with ar and enhances transcriptional activity of ar
SIGNOR-189113
P24752
P11362
0
phosphorylation
up-regulates activity
0.2
Treatment with the FGFR1 inhibitor TKI258 in FGFR1-expressing H1299 cells led to decreased Y407 phosphorylation of ACAT1 in the mitochondrial fraction, where both ACAT1 and a fraction of FGFR1 were detected|Inhibition of tetrameric ACAT1 by abolishing Y407 phosphorylation or AH treatment results in decreased ACAT1 activity,
SIGNOR-264423
Q13557
Q9UQD0
1
phosphorylation
up-regulates activity
0.281
CaMKII enhances voltage-gated sodium channel Nav1.6 activity and neuronal excitability|mmobilized peptide arrays and nanoflow LC-electrospray ionization/MS of Nav1.6 reveal potential sites of CaMKII phosphorylation, specifically Ser-561 and Ser-641/Thr-642 within the first intracellular loop of the channel.
SIGNOR-275792
Q13635
Q99835
2
binding
down-regulates activity
0.786
We show that free Ptc (unbound by Hh) acts sub-stoichiometrically to suppress Smo activity and thus is critical in specifying the level of pathway activity.
SIGNOR-91709
O15169
P62140
0
dephosphorylation
down-regulates activity
0.2
The data suggest that PP1 controls Wnt signaling through interaction with, and regulated dephosphorylation of, axin| Axin phosphorylation markedly enhances the binding of glycogen synthase kinase 3, leading to a more active beta-catenin destruction complex. Wnt-regulated changes in axin phosphorylation, mediated by PP1, may therefore determine beta-catenin transcriptional activity| Four sites, S80, S82, S222, and S473, were identified to be PP1 regulated
SIGNOR-248567
P21728
O95837
2
binding
up-regulates activity
0.265
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-257391
P14618
P24666
0
dephosphorylation
up-regulates activity
0.279
Indeed, it is evident that LMW-PTP, hydrolyzing phosphotyrosine residues, contributes to maintain PKM2 in its active form.|We speculate that this effect is in large part due to LMW-PTP inhibition, which leads a fast PKM2 phosphorylation and inactivation.|we demonstrate that in melanoma cells the overexpression of LMW-PTP is functional to maintain PKM2 in its dephosphorylate status – the tetrameric, “full active” form - which is retained in the cytoplasm
SIGNOR-277134
Q92997
Q92945
2
binding
down-regulates
0.2
Ksrp was shown to interact with the c-terminus of dvl3. We show that ksrp negatively regulates wnt/beta-catenin signaling at the level of post-transcriptional ctnnb1 (beta-catenin) mrna stability.
SIGNOR-23800
P19174
Q07889
2
binding
up-regulates
0.647
We provide evidence that sos1, a p21ras-specific guanine nucleotide exchange factor, directly binds to the sh3 domain of plc-gamma1, and that the sh3 domain of plc-gamma1 is involved in sos1-mediated p21ras activation.
SIGNOR-80024
P15941
P00533
0
phosphorylation
up-regulates activity
0.577
We also show that the activated egf-r phosphorylates the muc1 cytoplasmic tail on tyrosine at a yekv motif that functions as a binding site for the c-src sh2 domain. The results demonstrate that egf-r-mediated phosphorylation of muc1 induces binding of muc1 to c-src in cells
SIGNOR-109538
Q13464
O14974
1
phosphorylation
down-regulates activity
0.774
Phosphorylation by Rho-kinase inhibited MP activity and this reflected a decrease in V(max). Activity of MP with different substrates also was inhibited by phosphorylation. Two major sites of phosphorylation on MYPT1 were Thr(695) and Thr(850).
SIGNOR-249034
P35348
P63092
2
binding
up-regulates activity
0.291
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 ‚â• -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 ‚â• -1.0 for defining true couplings. | The score associated to this interaction has a LogRAi ‚â• -1.0.
SIGNOR-256812
P01112
P20936
2
binding
down-regulates
0.848
The Ras protein sits at the center of a many-tiered cascade of molecular interactions. Most of the proteins along this cascade are activated by phosphorylation, but Ras uses a bound guanine nucleotide to toggle between its “on” and “off” states. Ras hydrolyzes GTP to GDP fairly quickly, turning itself “off,” and a collection of GTPase-activating proteins (GAPs) speed up the processthe complex between human h-ras bound to guanosine diphosphate and the guanosine triphosphatase (gtpase)-activating domain of the human gtpase-activating protein p120gap (gap-334) in the presence of aluminum fluoride was solved.
SIGNOR-68990
Q06609
P42229
0
transcriptional regulation
up-regulates quantity by expression
0.263
FLT3-ITD-TKD dual mutants induce hyperactivation of STAT5 and up-regulation of its downstream targets Bcl-x(L) and RAD51 in Ba/F3 cells
SIGNOR-261552
Q9BW19
P06493
0
phosphorylation
up-regulates quantity by stabilization
0.458
We confirmed that CDK1 phosphorylates Ser6 (Supplementary Fig S5B) and demonstrated that KIFC1 displays CDK1-mediated resistance to ubiquitination by the APC/C (Fig S5C).
SIGNOR-277294
P15498
O15524
2
binding
down-regulates quantity by destabilization
0.598
SOCS1 stimulates the polyubiquitination of VAV proteins in vivo, which was stabilized by proteasomal inhibitors. These results suggest that SOCS1 programs VAV degradation by acting as a substrate-specific recognition component of a VCB-like ubiquitin ligase complex.
SIGNOR-272559
P22460
Q13131
0
phosphorylation
down-regulates activity
0.2
Thus, AMPK directly phosphorylates the  subunit of KV1.5 at Ser592 and, to a lesser extent, at Ser560
SIGNOR-277814
Q7RTT9
P19544
0
transcriptional regulation
up-regulates quantity by expression
0.274
ENT4 is transcriptionally activated by both isoforms of EWS/WT1 as evidenced by promoter-reporter and chromatin immunoprecipitation (ChIP) analyses.
SIGNOR-268985
P45983
Q9UPT6
2
phosphorylation
up-regulates
0.722
Phosphoamino acid analysis confirmed that jnk caused thr phosphorylation of jip3 (fig. _(fig.3c).3c). This phosphorylation on thr was markedly decreased when thr266, thr276, and thr287 were replaced with ala. These data indicate that jnk phosphorylated jip3 on thr266, thr276, and thr287 in vitro.
SIGNOR-134545
Q9HAU4
Q15797
1
polyubiquitination
down-regulates quantity by destabilization
0.725
Here, we report the identification of Smurf2, a new member of the Hect family of E3 ubiquitin ligases. Smurf2 selectively interacts with receptor-regulated Smads and preferentially targets Smad1 for ubiquitination and proteasome-mediated degradation. At higher expression levels, Smurf2 also decreases the protein levels of Smad2, but not Smad3. 
SIGNOR-272936
O14867
P52789
1
transcriptional regulation
up-regulates quantity
0.2
BACH1 activates transcription of Hexokinase 2 and Gapdh and increases glucose uptake, glycolysis rates, and lactate secretion, thereby stimulating glycolysis-dependent metastasis of mouse and human lung cancer cells.
SIGNOR-259338
P35626
P51681
1
phosphorylation
down-regulates activity
0.2
Serine residues at positions 336, 337, 342, and 349 represent GRK phosphorylation sites on CCR5. CCR5 phosphorylation and desensitization through a GRK-mediated mechanism
SIGNOR-251463
P51948
P03372
1
phosphorylation
up-regulates activity
0.397
Human Estrogen Receptor α Is Phosphorylated at Serine 118 In Vivo by Cdk7
SIGNOR-260837
Q9UKC9
Q96P20
2
binding
down-regulates quantity by destabilization
0.351
LPS exposure reduces the ubiquitin-mediated proteasomal processing of NALP3 by inducing levels of an E3 ligase component, FBXO3, which targets FBXL2. The latter is an endogenous mediator of NALP3 degradation. FBXL2 recognizes Trp-73 within NALP3 for interaction and targets Lys-689 within NALP3 for ubiquitin ligation and degradation. 
SIGNOR-272432
O14976
P12931
0
phosphorylation
up-regulates activity
0.274
GAK is phosphorylated by c-Src and translocated from the centrosome to chromatin at the end of telophase. Cyclin G-associated kinase (GAK) harbors a consensus phosphorylation motif (Y412) for c-Src; however, its physiological significance remains elusive. Here, we show that GAK is phosphorylated by c-Src not only at Y412 but also at Y1149.
SIGNOR-263197
Q06124
P40763
1
dephosphorylation
down-regulates activity
0.77
In addition, SHP-2 dephosphorylates tyrosine-phosphorylated Stat1/3/5A (Ohtani et al., 2000; Wu et al., 2002; Chen et al., 2003), and downregulates Stat3-mediated biological actions (Ohtani et al., 2000).|Inhibition of collagen-induced Stat3 tyrosine-705 (Stat3-p-Tyr)
SIGNOR-272404
P68400
P55957
1
phosphorylation
up-regulates activity
0.286
Here we report that Bid is phosphorylated by casein kinase I (CKI) and casein kinase II (CKII). Inhibition of CKI and CKII accelerated Fas-mediated apoptosis and Bid cleavage, whereas hyperactivity of the kinases delayed apoptosis. | These results suggest that residues S61, S64, and to a much lesser extent T58 are sites of phosphorylation of Bid.
SIGNOR-250831
P10398
Q8IVT5
2
binding
up-regulates activity
0.567
In mammals, RAF family kinases include three catalytically competent enzymes (ARAF, BRAF and CRAF) and two pseudokinases (KSR1 and KSR2) that have been described as scaffolds owing to their apparent ability to bridge RAF isoforms and their substrate, mitogen-activated protein kinase kinase (MEK).Kinase suppressor of Ras (KSR) pseudokinases were also shown to dimerize with kinase-competent RAFs to stimulate catalysis allosterically.
SIGNOR-273876
O15393
P0DTC2
1
cleavage
up-regulates activity
0.2
Here, we demonstrate that SARS-CoV-2 uses the SARS-CoV receptor ACE2 for entry and the serine protease TMPRSS2 for S protein priming. The Cellular Serine Protease TMPRSS2 Primes SARS-2- S for Entry, and a Serine Protease Inhibitor Blocks SARS-CoV-2 Infection of Lung Cells
SIGNOR-260736
P0C1S8
P06493
1
phosphorylation
down-regulates activity
0.587
Recombinant Wee1B effectively phosphorylated cyclin B-associated Cdk1 on tyrosine-15, resulting in an inactivation of the kinase activity of Cdk1.
SIGNOR-279134
P45984
P15336
1
phosphorylation
up-regulates
0.698
Phosphorylation of thr-69 by mapk14 and mapk11, and at thr-71 by mapk1/erk2, mapk3/erk1, mapk11, mapk12 and mapk14 in response to external stimulus like insulin causes increased transcriptional activity.
SIGNOR-163266
Q9NS23
Q96GD4
0
phosphorylation
down-regulates
0.438
Here, we show that aurora a and b associate with and phosphorylate rassf1a on serine 203 aurora a regulates prometaphase progression by inhibiting the ability of rassf1a to suppress apc-cdc20 activity.
SIGNOR-184561
Q13164
Q16828
0
dephosphorylation
down-regulates activity
0.646
However, whilst the interaction itself might be difficult to monitor, DUSP6 should still be able to promote the de-phosphorylation of ERK5 in cells if it is an ERK5 phosphatase.To test this HEK293 cells were transiently transfected with HA-ERK2 or HA-ERK5 together with EGFP-MEK1E (a constitutively active version of MEK1) or EGFP-MEK5D (a constitutively active version of MEK5).|Whilst one can envisage scenarios in which the interaction between DUSPs and their substrates might be transient, DUSP6 should still be able to promote the de-phosphorylation and inactivation of ERK5.
SIGNOR-277007
Q99683
P52564
1
phosphorylation
up-regulates activity
0.613
A MAP kinase kinase kinase (MAPKKK), termed ASK1, was identified that activated two different subgroups of MAP kinase kinases (MAPKK), SEK1 (or MKK4) and MKK3/MAPKK6 (or MKK6), which in turn activated stress-activated protein kinase (SAPK, also known as JNK; c-Jun amino-terminal kinase) and p38 subgroups of MAP kinases, respectively.
SIGNOR-45353
P54619
P54646
2
binding
up-regulates
0.897
Gamma non-catalytic subunit mediates binding to amp, adp and atp, leading to activate or inhibit ampk: amp-binding results in allosteric activation of alpha catalytic subunit (prkaa1 or prkaa2) both by inducing phosphorylation and preventing dephosphorylation of catalytic subunits.
SIGNOR-139173
P50148
P61586
2
binding
up-regulates
0.576
Recently, the dbl-family guanine nucleotide exchange factor (gef) p63rhogef/geft has been described as a novel mediator of galpha(q/11) signaling to rhoa based on its ability to synergize with galpha(q/11) resulting in enhanced rhoa signaling in cells.
SIGNOR-156534
P62805
O94874
0
ubiquitination
up-regulates activity
0.2
Here we report that UFM1 specific ligase 1 (UFL1), an ufmylation E3 ligase, is important for ATM activation.
SIGNOR-265072
Q5SGD2
O43318
1
dephosphorylation
down-regulates activity
0.585
Co-immunoprecipitation experiments indicated that PP2Cepsilon associates stably with TAK1 and attenuates the binding of TAK1 to MKK4 or MKK6.|PP2Cepsilon dephosphorylated TAK1 in vitro.
SIGNOR-277114
P43405
Q8IWV1
1
phosphorylation
up-regulates activity
0.378
Upon stimulation via the B or T cell receptors, LAX is rapidly phosphorylated by Src and Syk family tyrosine kinases and interacts with Grb2, Gads, and p85. 
SIGNOR-273535
Q6P589
O43318
0
phosphorylation
down-regulates quantity by destabilization
0.2
 TAK1 phosphorylated the Ser3 in the noncanonical degron motif of TIPE2 to trigger its interaction with β-TrCP for subsequent ubiquitination and degradation.
SIGNOR-273668
P05771
Q05639
1
phosphorylation
up-regulates activity
0.2
PKCβI phosphorylates eEF1A at Ser53.our proteomics exploration of cPKC signaling in the nuclei of C2C12 cells demonstrated that the up-regulation of eEF1A intranuclear content, evoked by insulin, is associated with an increase in the phosphorylation of the Ser53 residue of the protein.
SIGNOR-263166
P27361
P15056
1
phosphorylation
down-regulates
0.645
Erk-induced phosphorylation of b-raf on t753 promoted the disassembly of raf heterodimers, and the mutation of t753 prolonged growth factor-induced heterodimerization. The b-raf t753a mutant enhanced differentiation of pc12 cells, which was previously shown to be dependent on sustained erk signaling. Site is critical for v-src dependent modulation of slk kinase activity.
SIGNOR-144827
O43597
P12931
0
phosphorylation
up-regulates
0.565
Activation of signalling by fibroblast growth factor receptor leads to phosphorylation of the signalling attenuator human sprouty 2 (hspry2) on residue y55. we show that hspry2 is a direct substrate for src family kinases, including src itself.Phosphorylation of hspry2 is required for hspry2 to inhibit activation of the extracellular signal-regulated kinase pathway.
SIGNOR-131189
P06730
Q13490
0
ubiquitination
down-regulates quantity by destabilization
0.401
We found that endogenous eIF4E was ubiquitinated by cIAP1, and ubiquitinated eIF4E accumulated upon MG132 treatment.
SIGNOR-278741
Q92830
P11802
0
phosphorylation
up-regulates activity
0.36
Activated cyclin D1-Cdk4 kinase phosphorylates and activates GCN5|GCN5 T272A/S372A (AA) phosphorylation by cyclin D1-CDK4 kinase is diminished compared to GCN5 wild-type (WT)
SIGNOR-275494
P02452
P13497
0
cleavage
up-regulates activity
0.681
BMP-1myc Expressed in COS-7 Cells Exhibits Procollagen C-proteinase Activity. Bone morphogenetic protein (BMP)-1, which belongs to the tolloid subgroup of astacin-like zinc metalloproteinases, cleaves the C-propeptides of procollagen at the physiologic site and is, therefore, a procollagen C-proteinase (PCP). Cleavage occurs between a specific alanine or glycine residue (depending on the procollagen chain) and an invariant aspartic acid residue in each of the three chains of procollagen.
SIGNOR-256342
O14640
O60353
2
binding
up-regulates activity
0.678
When canonical wnts bind to their respective fzd receptors, heterotrimeric g-proteins and dsh get activated and lead to the recruitment of axin to the fzd co-receptor lrp.
SIGNOR-198828
P0C0L5
Q96PZ7
2
binding
down-regulates quantity
0.2
CUB and sushi multiple domains 1 (CSMD1) is a relatively poorly studied large transmembrane protein of 390 kDa composed of 14 N-terminal CUB domains interspersed with complement control protein (CCP) domains followed by 15 consecutive CCP domains. The active domains of CSMD1 were then identified in CCP17-21, which were shown to interact with C4b and C3b and present these complement proteins for degradation by factor
SIGNOR-265149
P23458
P16871
2
binding
up-regulates
0.638
For instance, jak1 is associated with the ? Subunits of ?c Cytokines such as il-7r? And IL-4R. jak3 is associated with the ?c20,21. Cytokine binding mediates the trans-phosphorylation of receptor associated jak kinases, which in turn phosphorylate tyrosine residues on the receptors themselves. The receptor phosphotyrosines serve as docking sites for sh2 domain proteins including the stat family of transcription factors which are activated by jak-mediated phosphorylation.
SIGNOR-178494
Q96I25
P49759
0
phosphorylation
up-regulates activity
0.317
In this work, we show that Cdc2-like kinase 1 (Clk1) phosphorylates SPF45 on eight serine residues.
SIGNOR-262710
P31751
P15056
1
phosphorylation
down-regulates
0.272
We show that phosphorylation of b-raf by akt occurs at multiple residues within its amino terminal regulatory domain, at both the conserved and unique phosphorylation sites. Akt phosphorylated b-raf on s364 and s428 to inactivate its kinase activity b-raf contains three akt consensus sites, table i. One site, ser364 is conserved with c-raf;however, two sites, ser428 and thr439, are unique to b-raf
SIGNOR-78689
Q9NYA1
P27361
0
phosphorylation
up-regulates
0.601
Activation of sphingosine kinase 1 by erk1/2-mediated phosphorylation.
SIGNOR-118550
Q15375
P56915
0
transcriptional regulation
down-regulates quantity by repression
0.2
We demonstrate that Goosecoid can act as a repressor of its own promoter activity in transient co-transfection experiments in mouse P19 cells and in Xenopus embryos. Autorepression depends on the presence of the homeodomain and is mediated through the prd element more proximal to the transcriptional start site.
SIGNOR-261613
Q13887
Q05655
0
phosphorylation
up-regulates activity
0.335
Phosphorylation of Kruppel-like factor 5 (KLF5/IKLF) at the CBP interaction region enhances its transactivation function. | Inhibition of protein kinase activity by H7 or calphostin C blocked both full-length and N-terminal fragment (amino acids 1-238) KLF5 activities. Mutation at a potential protein kinase C phosphorylation site within the CBP interaction domain of KLF5 reduces its transactivation function. Furthermore, using the GST pull-down approach, we showed that phosphorylation of KLF5 enhances its interaction with CBP. The results of the present study provide a mechanism for KLF5 transactivation function. | We found that KLF5€™s activity was reduced to half when the serine in the potential PKC phosphorylation site was mutated to alanine (Fig. 6B, S153A) Nonetheless, the S153A mutant still retains significant transactivation activity.
SIGNOR-249206
Q00987
P04637
1
ubiquitination
down-regulates quantity by destabilization
0.968
The E3 ubiquitin ligase, MDM2, uses a dual-site mechanism to ubiquitinate and degrade the tumor suppressor protein p53, involving interactions with the N-terminal hydrophobic pocket and the acidic domain of MDM2.
SIGNOR-196116
P08754
Q9HC97
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-256860
Q86U44
Q13315
0
phosphorylation
up-regulates activity
0.2
Here, we report that, in response to DSBs, the RNA methyltransferase METTL3 is activated by ATM-mediated phosphorylation at S43.
SIGNOR-265969
P17612
O95644
1
phosphorylation
down-regulates
0.385
Here we show that overexpression of pka causes phosphorylation and cytoplasmic accumulation of nf-atc1 in direct opposition to calcineurin by phosphorylating ser-245, ser-269, and ser-294 in the conserved serine-proline repeat domainwe further show that a complete block of nf-atc1 nuclear localization by pka requires a second kinase activity that can be supplied by glycogen synthase kinase-3 (gsk-3)
SIGNOR-93531
P42771
P11802
2
binding
down-regulates
0.905
The first group, including p16ink4a, p15ink4b,p18ink4cand p19ink4d, is specific for the g1 cdks, cdk4 and cdk6, inhibiting the kinase activity of cyclin d/cdk4-cdk6 complexes on prb.
SIGNOR-44554
P17612
Q00059
1
phosphorylation
up-regulates
0.2
Here, we demonstrate that tfam is phosphorylated within its hmg box 1 (hmg1) by camp-dependent protein kinase in mitochondria. Hmg1 phosphorylation impairs the ability of tfam to bind dna and to activate transcription.
SIGNOR-199934
P10636
O96017
0
phosphorylation
down-regulates
0.2
Tau pseudophosphorylation at specific sites such as s262, s293, s324 and s356 was reported to induce tau conformational change and attenuate tau binding to microtubules (fischer et al., 2009). Then, newly soluble tau proteins are targeted by post-translational modifications that directly or indirectly alter tau conformation, promoting tau dimerization in an anti-parallel manner. Stable tau dimers form tau oligomers, which continue in the aggregation process
SIGNOR-171026
Q9Y463
P20823
1
phosphorylation
up-regulates
0.502
Mirk phosphorylates hnf1 at amino acid 249mkk3 enhanced mirk kinase activity and the transcriptional activation of hnf1alpha by mirk
SIGNOR-86728
Q8IYA7
P35711
1
transcriptional regulation
up-regulates quantity by expression
0.295
MKX is a meniscus-enriched transcription factor. In human meniscus cells, MKX regulates the expression of meniscus marker genes, OA-related genes, and other transcription factors, including Scleraxis (SCX), SRY Box 5 (SOX5), and Runt domain-related transcription factor 2 (RUNX2).
SIGNOR-267214