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14
P12931
P35222
1
phosphorylation
down-regulates activity
0.761
beta-catenin is a good substrate of pp60c- srctyrosine kinase in vitro;this kinase modifies specifically tyr-86 and tyr-654although consistently detected, this negative effect of tyr-86 phosphorylation on tbp binding was clearly less important than the positive effect observed after tyr-654 phosphorylation.
SIGNOR-106458
A6ND36
Q9Y5K6
2
binding
up-regulates activity
0.346
PAWS1 interacts in a dynamic fashion with the actin/cytoskeletal regulator CD2AP at lamellae|Loss of PAWS1 causes severe defects in F-actin organization and distribution as well as in lamellipodial organization, resulting in impaired cell migration.
SIGNOR-264768
Q16654
P11498
1
phosphorylation
down-regulates activity
0.373
PDK4 phosphorylates and inhibits the pyruvate dehydrogenase complex (PDC) which catalyzes the conversion of pyruvate to acetyl-CoA in the glucose oxidation pathway.
SIGNOR-278974
Q6T4R5
Q07157
2
binding
up-regulates activity
0.2
NHS-A is a novel interactor of ZO-1 and is expected to have a role at tight junctions. Its recruitment to these junctions is dependent upon their assembly.
SIGNOR-253567
Q13393
Q15382
2
binding
up-regulates
0.537
Rheb binds and activates pld1 in vitro in a gtp-dependent manner, strongly suggesting that pld1 is a bona fide effector for rheb.
SIGNOR-178892
P19086
P14416
2
binding
up-regulates activity
0.391
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-257096
Q15831
Q9P0L2
1
phosphorylation
up-regulates
0.41
Lkb1 is a master kinase that activates 13 kinases of the ampk subfamily, including mark/par-1we recently demonstrated that the lkb1 tumour suppressor kinase, in complex with the pseudokinase strad and the scaffolding protein mo25, phosphorylates and activates amp-activated protein kinase (ampk). A total of 12 human kinases (nuak1, nuak2, brsk1, brsk2, qik, qsk, sik, mark1, mark2, mark3, mark4 and melk) are related to ampk. Here we demonstrate that lkb1 can phosphorylate the t-loop of all the members of this subfamily, apart from melk, increasing their activity >50-fold
SIGNOR-122545
O00429
Q5S007
0
phosphorylation
up-regulates activity
0.568
LRRK2 G2019S directly bound to and phosphorylated Drp1 at Threonine595, whereas P110 treatment abolished this phosphorylation.Threonine595 phosphorylation of Drp1 by LRRK2 G2019S is required for Drp1-mediated mitochondrial fragmentation and excessive autophagy
SIGNOR-276495
P45985
Q13233
0
phosphorylation
up-regulates activity
0.729
The gck-ctd-mekk1 interaction is sufficiently stable to support mekk1 s phosphorylation of its substrate, sek1
SIGNOR-236380
Q9NW38
Q9BXW9
1
ubiquitination
up-regulates activity
0.9
Thus, eight of the nine components of the FA core complex are FA proteins (FANC‐A, B, C, E, F, G, L, and M). Furthermore, two of the newly discovered FA proteins have enzymatic activities: FANCL is a ubiquitin ligase essential for FANCD2 monoubiquitination in vivo 
SIGNOR-263250
A8MYZ6
Q14938
0
transcriptional regulation
down-regulates quantity
0.2
By integrating transcriptomic profiling (RNA-seq) of Nfia- and Nfix-deficient GNPs with epigenomic profiling (ChIP-seq against NFIA, NFIB and NFIX, and DNase I hypersensitivity assays), we reveal that these transcription factors share a large set of potential transcriptional targets, suggestive of complementary roles for these NFI family members in promoting neural development
SIGNOR-268887
P24941
P28482
0
phosphorylation
up-regulates
0.497
In addition to its role in stimulating cyclin d1 expression and nuclear translocation of cdk2, erk regulates thr-160 phosphorylation of cdk2-cyclin e.
SIGNOR-94003
P10914
Q03001
1
transcriptional regulation
down-regulates quantity by repression
0.2
Transient transfection studies with BPAG1 promoter-luciferase reporter gene plasmids and IRF1 and IRF2 expression plasmids revealed that IRF1 and IRF2 directly down-regulated BPAG1 gene transcription in cultured normal human epidermal keratinocytes.
SIGNOR-254492
P63096
P08173
2
binding
up-regulates activity
0.454
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-256686
P42684
Q14689
2
binding
up-regulates activity
0.2
Here, using cultured hippocampal neurons pooled from both sexes of mice, we provide evidence that binding to cortactin tethers Abl2 in spines, where Abl2 and cortactin maintain the small pool of stable actin required for dendritic spine stability.
SIGNOR-266593
P25963
Q9HC78
0
transcriptional regulation
down-regulates quantity by repression
0.259
ChIP and next generation high-throughput DNA sequencing assay showed that ZBTB20 specifically bound to IκBα gene promoter (+1 to +60 region) after TLR activation. ZBTB20 could inhibit IκBα gene transcription, govern IκBα protein expression, and then promote NF-κB activation. Therefore, transcriptional repressor ZBTB20 is needed to promote full activation of TLR signaling and TLR-triggered innate immune response by selectively suppressing the suppressor IκBα gene transcription.
SIGNOR-266868
Q03431
P01270
2
binding
up-regulates
0.772
Here we show that binding of pth to its receptor pth1r induced association of lrp6, a coreceptor of wnt, with pth1r. The formation of the ternary complex containing pth, pth1r, and lrp6 promoted rapid phosphorylation of lrp6, which resulted in the recruitment of axin to lrp6, and stabilization of beta-catenin.
SIGNOR-182039
P14618
Q9P1W9
0
phosphorylation
up-regulates quantity by stabilization
0.37
Here, we identified the protein-serine/threonine kinase PIM2, a known oncogene, as a novel binding partner of PKM2. The interaction between PIM2 and PKM2 was confirmed by multiple biochemical approaches in vitro and in cultured cells. Importantly, we found that PIM2 could directly phosphorylate PKM2 on the Thr-454 residue, resulting in an increase of PKM2 protein levels. Compared with wild type, PKM2 with the phosphorylation-defective mutation displayed a reduced effect on glycolysis
SIGNOR-267472
P00519
Q06830
1
phosphorylation
down-regulates activity
0.387
Inactivation of peroxiredoxin I by phosphorylation allows localized H(2)O(2) accumulation for cell signaling. To determine whether Prxs are phosphorylated, we subjected recombinant human PrxI and II to an in vitro kinase assay with two nonreceptor PTKs, Lck and Abl, in the presence of [γ-32P]ATP. Both PTKs phosphorylated PrxI and PrxII. Phosphorylation of the wild-type protein was detected, whereas that of the Y194F mutant was not (Figure 1B), indicating that Tyr194 is the only site of tyrosine phosphorylation.
SIGNOR-276278
P09467
Q16665
2
binding
down-regulates activity
0.326
FBP1, but not FBP2, suppresses HIF-1a activity by directly binding to its inhibitory domain.
SIGNOR-267590
O96017
P10721
1
phosphorylation
up-regulates
0.286
In this report, we characterize the binding of sh2(chk) to specific phosphotyrosine sites on the c-kit protein sequence. the sh2(chk) binding to the two sites is direct and not through phosphorylated intermediates such as fyn or shc. this indicates that chk binds to the same site on c-kit to which fyn binds, possibly bringing the two into proximity on associated c-kit subunits and leading to the down-regulation of fyn by chk.
SIGNOR-197281
O96001
Q13976
0
phosphorylation
up-regulates
0.656
Recombinant human G-substrate was phosphorylated efficiently by cGMP-dependent protein kinase exclusively at Thr residues, and it was recognized by antibodies specific for rabbit phospho-G-substrate. The amino acid sequences surrounding the sites of phosphorylation in G-substrate are related to those around Thr-34 and Thr-35 of the dopamine- and cAMP-regulated phosphoprotein DARPP-32 and inhibitor-1, respectively, two potent inhibitors of protein phosphatase 1.
SIGNOR-263148
Q9NQS5
P19086
2
binding
up-regulates activity
0.25
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-257099
Q8N9L9
P0DMV8
2
binding
down-regulates quantity by destabilization
0.2
HSPA1A binds unphosphorylated ACOT4 and promotes its degradation
SIGNOR-271819
P06239
P27986
1
phosphorylation
down-regulates activity
0.623
the regulatory p85 subunit of phosphatidylinositol 3-kinase is phosphorylated on tyrosine residues. We report that this phosphorylation event is readily catalyzed by the Abl and Lck protein-tyrosine kinases in vitro, by Bcr-Abl or a catalytically activated Lck-Y505F in co-transfected COS cells. we have mapped a major phosphorylation site to Tyr-688 in the C-terminal SH2 domain of p85. Tyrosine phosphorylation of p85 in vitro or in vivo was not associated with detectable change in the enzymatic activity of the phosphatidylinositol 3-kinase heterodimer, but correlated with a strong reduction in the binding of some, but not all, phosphoproteins to the SH2 domains of p85.
SIGNOR-251383
P30291
Q8IY84
0
phosphorylation
down-regulates activity
0.48
Furthermore, purified bacterially produced Nim1 kinase directly phosphorylates and inactivates Wee1 in vitro.|Phosphorylation and inactivation of the mitotic inhibitor Wee1 by the nim1 and cdr1 kinase.
SIGNOR-279238
Q13547
O15379
2
binding
up-regulates
0.533
Furthermore, smad7 caused hdac-1 bind to e2f-1 to form a ternary complex on chromosomal dna containing an e2f-binding motif and leading to repression in the activity of the e2f target genes.
SIGNOR-199964
Q13451
Q9NZQ7
1
catalytic activity
up-regulates quantity by expression
0.2
FKBP51s upregulated PD-L1 expression on the plasma membrane by catalysing the protein folding required for subsequent glycosylation. Inhibition of FKBP51s isomerase activity by SAFit decreased PD-L1 levels
SIGNOR-274973
P41597
O60674
0
phosphorylation
up-regulates activity
0.605
JAK2 phosphorylates CCR2 at the Tyr139 position and promotes JAK2/STAT3 complex association to the receptor. 
SIGNOR-251345
P20645
O60664
0
relocalization
up-regulates activity
0.73
TIP47 is present in cytosol and on endosomes and is required for MPR transport from endosomes to the trans-Golgi network in vitro and in vivo. TIP47 recognizes a phenylalanine/tryptophan signal in the tail of the cation-dependent MPR that is essential for its proper sorting within the endosomal pathway. These data suggest that TIP47 binds MPR cytoplasmic domains and facilitates their collection into transport vesicles destined for the Golgi.
SIGNOR-253093
O43865
Q9Y6R1
2
binding
up-regulates activity
0.671
IRBIT opposed the effects of WNKs and SPAK by recruiting PP1 to the complex to dephosphorylate CFTR and NBCe1-B, restoring their cell surface expression, in addition to stimulating their activities.
SIGNOR-263135
Q16695
Q15652
0
demethylation
down-regulates activity
0.2
We now determine that JMJD1C is recruited by USF-1 to various lipogenic genes for H3K9 demethylation to enhance chromatin accessibility in the fed state.
SIGNOR-265170
P10415
O75030
0
transcriptional regulation
up-regulates quantity by expression
0.475
MITF directly occupies the BCL2 promoter in vivo and this suggest that BCL2 may be a direct transcriptional target of MITF
SIGNOR-249618
Q99684
P17947
2
binding
down-regulates activity
0.594
Our data demonstrate that GFI-1 physically interacts with PU.1, repressing PU.1-dependent transcription. This repression is functionally significant, as GFI-1 blocked PU.1-induced macrophage differentiation of a multipotential hematopoietic progenitor cell line.
SIGNOR-256043
P35269
P35269
2
phosphorylation
down-regulates
0.2
We show that tfiifalpha possesses a serine/threonine kinase activity, allowing an autophosphorylation of the two residues at position serine 385 and threonine 389. Mutation analysis strongly suggests that autophosphorylation of both sites regulates the transcription elongation process.
SIGNOR-69767
Q13526
Q14653
2
binding
down-regulates quantity by destabilization
0.643
Here we report that activation of IRF3 is negatively regulated by the peptidyl-prolyl isomerase Pin1. After stimulation by double-stranded RNA, induced phosphorylation of the Ser339–Pro340 motif of IRF3 led to its interaction with Pin1 and finally polyubiquitination and then proteasome-dependent degradation of IRF3. Suppression of Pin1 by RNA interference or genetic deletion resulted in enhanced IRF-3-dependent production of interferon-beta, with consequent reduction of virus replication.
SIGNOR-252256
P53350
O14757
0
phosphorylation
down-regulates activity
0.314
 Chk1 directly phosphorylates Plk1 to disturb its interaction with Sgo1. 
SIGNOR-277914
P63096
P35346
2
binding
up-regulates activity
0.496
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-256690
P49841
Q9Y2X9
1
phosphorylation
down-regulates quantity by destabilization
0.2
GSK-3beta phosphorylation-dependent degradation of ZNF281 by beta-TrCP2 suppresses colorectal cancer progression|
SIGNOR-264890
P49674
P35222
1
phosphorylation
down-regulates activity
0.657
Using mass spectrometry and phosphopeptide-specific antibodies, we show that a complex of axin and casein kinase I (CKI) induces Beta-catenin phosphorylation at a single site: serine 45 (S45).
SIGNOR-244102
O14920
Q99759
0
phosphorylation
up-regulates activity
0.569
Genetic analysis showed that MEKK3, which is thought to activate IKK2 through phosphorylation (Yang et al., 2001), is necessary for TNF-alpha-induced NF-kappaB activation.|Our results also suggest that IKK2 is phosphorylated on S177 and S181 on its activation loop by MEKK3.
SIGNOR-279468
O75582
P0C0S8
1
phosphorylation
up-regulates
0.2
We found that msk1 phosphorylated histone h2a on serine 1, and mutation of serine 1 to alanine blocked the inhibition of transcription by msk1.
SIGNOR-123383
O43524
Q13131
0
phosphorylation
up-regulates activity
0.517
Phosphorylation by AMPK leads to the activtion of FOXO3 transcriptional activity without affecting FOXO3 subcellular localization.
SIGNOR-249684
P62140
O15169
1
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
Q92914
P35498
2
binding
down-regulates activity
0.259
Sodium channel fast inactivation is modulated by alpha subunit interaction with a family of cytoplasmic proteins termed fibroblast growth factor homologous factors (FHFs). In this paper, we report that all A-type FHFs exert rapid onset long-term inactivation on Nav1.6 and other sodium channels.
SIGNOR-253422
P17252
P48730
1
phosphorylation
up-regulates activity
0.2
In the present study we analyzed the CK1δ kinase domain for phosphorylation sites targeted by PKCα. Several phosphorylation sites were identified in vitro by initially using GST-CK1δ wild type and phosphorylation-site mutant protein fragments originating from the CK1δ kinase domain. Residues S53, T176, and S181 could finally be confirmed as targets for PKCα. Determination of kinetic parameters of full-length wild type and mutant GST-CK1δ-mediated substrate phosphorylation revealed that integrity of residue T176 is crucial for maintaining CK1δ kinase activity.
SIGNOR-277452
P27361
O60674
1
phosphorylation
down-regulates
0.523
We hypothesize that phosphorylation of ser523 in jak2 by erks 1 and/or 2 or other as-yet-unidentified kinases acts in a negative feedback manner
SIGNOR-146747
Q9UQ80
P07288
1
transcriptional regulation
down-regulates quantity by repression
0.2
Ectopic expression of ebp1, a member of the PA2G4 family, inhibits the proliferation and induces the differentiation of human breast and prostate cancer cell lines. Ebp1 inhibits transcription of E2F1 and androgen receptor regulated genes such as prostate specific antigen (PSA) through its interactions with histone deacetylases (HDACs)
SIGNOR-253662
Q86WA8
Q2T9J0
1
cleavage
down-regulates quantity by destabilization
0.66
Self-cleavage of Tysnd1 in the active oligomer most likely inactivates its protease activity. Subsequently, the cleaved products are degraded by PsLon and removed from the Tysnd1 oligomer.
SIGNOR-261054
Q16625
P05129
0
phosphorylation
up-regulates activity
0.307
Protein kinase C regulates the phosphorylation and cellular localization of occludin. Ser(338) of occludin was identified as an in vitro protein kinase C phosphorylation site using peptide mass fingerprint analysis and electrospray ionization tandem mass spectroscopy. Both the phosphorylation of occludin and its incorporation into tight junctions induced by calcium switch were markedly inhibited by the PKC inhibitor GF-109203X.
SIGNOR-249107
Q99748
P56159
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
P16284
P41240
0
phosphorylation
up-regulates activity
0.55
We demonstrated that phosphorylation of PECAM-1 by Src or Csk family kinases was sufficient to trigger its association with SHP-2. Moreover, it was able to promote binding of PECAM-1 to SHP-1, a SHP-2-related protein-tyrosine phosphatase expressed in hemopoietic cells. Taken together, these findings indicated that the Src and Csk families of kinases are strong candidates for mediating tyrosine phosphorylation of PECAM-1 and triggering its association with SH2 domain-containing phosphatases under physiological circumstances.
SIGNOR-262741
P27361
Q9BRX9
2
binding
up-regulates
0.508
Morg1 specifically associates with several components of the erk pathway, including mp1, raf-1, mek, and erk, and stabilizes their assembly into an oligomeric complex.
SIGNOR-124473
Q16236
O96013
0
phosphorylation
down-regulates quantity by destabilization
0.2
PAK4 directly phosphorylated Nrf2 at T369, and it led to its nuclear export and proteasomal degradation, all of which impaired antioxidant responses in hepatocytes.
SIGNOR-277583
Q9HCU9
O43791
0
ubiquitination
down-regulates quantity
0.402
Intriguingly, BRMS1 turns out to be a potent substrate that is ubiquitinated by the Cul3-SPOP complex. Knockdown of SPOP increases the level of BRMS1 protein and represses the expression of BRMS1 repressive target genes such as OPN and uPA in breast cancer cells.
SIGNOR-268857
P07900
P29474
2
binding
up-regulates
0.76
The binding of hsp90 to enos enhances the activation of enos.
SIGNOR-57211
O00744
Q9UP38
2
binding
up-regulates
0.664
Inhibition of adipogenesis by wnt10b is likely mediated by wnt receptors, frizzled 1, 2, and/or 5, and co-receptors low density lipoprotein receptor-related proteins 5 and 6
SIGNOR-89134
P01106
Q06203
1
transcriptional regulation
up-regulates quantity by expression
0.2
PPAT, catalyzing the first step of purine synthesis, and DHODH, an enzyme generating uridine in the middle of the pyrimidine synthesis pathway, were validated as direct c-MYC target genes by all criteria.
SIGNOR-267381
O15524
P15498
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
P07949
P39905
2
binding
up-regulates
0.91
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-49094
Q8IXL6
P07237
1
phosphorylation
up-regulates activity
0.387
The secretory pathway kinase Fam20C phosphorylates Ser357 of PDI and responds rapidly to various ER stressors. Phosphorylation of Ser357 induces an open conformation of PDI and turns it from a "foldase" into a "holdase", which is critical for preventing protein misfolding in the ER. Phosphorylated PDI also binds to the lumenal domain of IRE1α, a major UPR signal transducer, and attenuates excessive IRE1α activity.
SIGNOR-275574
P05129
P49840
1
phosphorylation
down-regulates
0.324
Convergence of multiple signaling cascades at glycogen synthase kinase 3: edg receptor-mediated phosphorylation and inactivation by lysophosphatidic acid through a protein kinase c-dependent intracellular pathway.
SIGNOR-115726
Q05086
P04637
1
ubiquitination
down-regulates quantity
0.681
E6-AP also directly ubiquitylated p53 in an in vitro ubiquitylation assay.|Our result suggests that E6-AP not only enhances the degradation of p53 but also regulates the neuronal cell growth.
SIGNOR-278681
O95944
P12004
2
binding
down-regulates activity
0.307
NK cells play an important role in the early immune response to cancer. The NKp44 activating receptor is the only natural cytotoxicity receptor that is expressed exclusively by primate NK cells, yet its cellular ligands remain largely unknown.
SIGNOR-260043
P31273
O43541
2
binding
up-regulates activity
0.529
Smad6 interacts with hox transcription factors as part of the negative feedback circuit in the bmp signaling pathway
SIGNOR-75823
Q96GD4
Q9UKC9
2
binding
down-regulates quantity by destabilization
0.483
The SCF complex contains a catalytic core consisting of Skp1, Cullin1, and the E2 ubiquitin-conjugating (Ubc) enzyme and a F box component that acts as a receptor targeting numerous substrates via phosphodegron elicited interactions. our screening studies suggested that FBXL2 also targets Aurora B protein for ubiquitination and degradation.
SIGNOR-272097
Q9NTX7
Q9H2K2
1
ubiquitination
down-regulates quantity
0.614
We show that RNF146, tankyrase, and Axin form a protein complex, and that RNF146 mediates ubiquitylation of all three proteins to target them for proteasomal degradation.
SIGNOR-260005
Q14738
P17612
0
phosphorylation
up-regulates
0.2
Protein kinase a activates protein phosphatase 2a by phosphorylation of the b56delta subunit.
SIGNOR-153218
Q9Y3Z3
P06493
0
phosphorylation
down-regulates
0.492
Cyclin a2/cdk1 phosphorylates samhd1 at the threonine 592 residue both in vitro and in vivo. Phosphorylation of samhd1 thr592 correlates with loss of its ability to restrict hiv-1.
SIGNOR-201913
P68400
P54252
1
phosphorylation
up-regulates activity
0.2
Here we show that protein casein kinase 2 (CK2)-dependent phosphorylation controls the nuclear localization, aggregation and stability of ataxin-3 (ATXN3), the disease protein in spinocerebellar ataxia type 3 (SCA3). The main phosphorylation of ATXN3 in vivo thus occurred at serine residues within the three conserved UIMs.
SIGNOR-276224
P11309
Q16665
1
phosphorylation
up-regulates quantity by stabilization
0.2
PIM1 kinase directly phosphorylates HIF-1α at threonine 455, a previously uncharacterized site within its oxygen-dependent degradation domain. This phosphorylation event disrupts the ability of prolyl hydroxylases to bind and hydroxylate HIF-1α, interrupting its canonical degradation pathway and promoting constitutive transcription of HIF-1 target genes.
SIGNOR-277311
Q9UBK2
P16220
0
transcriptional regulation
up-regulates quantity by expression
0.554
CREB was found to induce expression of the gluconeogenic programme through the nuclear receptor coactivator PGC-1, which is shown here to be a direct target for CREB regulation in vivo
SIGNOR-256150
Q9UKA1
Q14203
2
binding
down-regulates quantity by destabilization
0.462
FBXL5 binds to p150(Glued)in vitro and in vivo. FBXL5 and p150(Glued) co-localize primarily in the cytoplasm with peri-nuclear enrichment in HeLa cells. Overexpression of FBXL5 promotes poly-ubiquitination of p150(Glued) and protein turnover of p150(Glued). Our findings provide a potential mechanism by which p150(Glued) protein function is regulated by SCFs.
SIGNOR-271652
Q92558
P12931
0
phosphorylation
up-regulates
0.407
The wave/scar proteins regulate actin polymerisation at the leading edge of motile cells via activation of the arp2/3 complex in response to extracellular cues.Src-dependent phosphorylation of scar1 promotes its association with the arp2/3 complex
SIGNOR-142724
P68400
P35221
1
phosphorylation
down-regulates
0.39
We demonstrate here that egfr activation results in disruption of the complex of beta-catenin and alpha-catenin, thereby abrogating the inhibitory effect of alpha-catenin on beta-catenin transactivation via ck2alpha-dependent phosphorylation of alpha-catenin at s641.
SIGNOR-161847
Q15139
Q15276
1
phosphorylation
up-regulates activity
0.382
PKD phosphorylates Rabaptin-5 at Ser407, and this controls alphavbeta3 and alpha5beta1 integrin and EGFR recycling.
SIGNOR-278192
O14559
P63000
1
gtpase-activating protein
down-regulates activity
0.444
We therefore developed a screening-compatible live-cell imaging assay, using FRET-based biosensors for the prototype GTPases RHOA, RAC1 and CDC4215,19,20 (Extended Data Fig. 2 and Supplementary Note 1)|We found catalytic activities for 45/75 RhoGEFs and 48/63 RhoGAPs| Our data thus not only reveal extensive promiscuity among regulators, but also that the inactivating RhoGAPs are less selective than the activating RhoGEFs (p-value=0.02)(Supplementary Table 2).
SIGNOR-260491
P40238
Q8WWM7
2
binding
down-regulates
0.353
A2d binds to cytokine receptors mpl and epo-r. A2d is associated with these unoccupied receptorsin vivo,and stimulation with tpo or epo causes the rapid dissociation of a2d from the activated receptor.
SIGNOR-113891
Q9HC23
Q8NFJ6
2
binding
up-regulates
0.665
We have cloned two closely related receptors for pk1 and pk2. These receptors, named prokineticin receptor 1 and 2 (pkr1 and pkr2)
SIGNOR-87919
P00533
Q9UBN7
1
phosphorylation
down-regulates
0.44
A negative feedback loop consisting of egfr-mediated phosphorylation of hdac6 tyr(570) resulted in reduced deacetylase activity and increased acetylation of alpha-tubulin.
SIGNOR-162431
P19086
P24530
2
binding
up-regulates activity
0.435
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-257321
Q05513
Q07812
1
phosphorylation
down-regulates activity
0.2
Protein kinase czeta abrogates the proapoptotic function of bax through phosphorylation. Overexpression of wild type or the constitutively active a119d but not the dominant negative k281w pkczeta mutant results in bax phosphorylation at serine 184.
SIGNOR-155111
P23443
O60331
1
phosphorylation
down-regulates quantity by destabilization
0.2
Here we show that p70S6K1 (S6K1), a downstream target of mechanistic target of rapamycin (mTOR), phosphorylates PIPKIγ90 at Thr-553 and Ser-555 and that S6K1-mediated PIPKIγ90 phosphorylation is essential for cell migration and invasion. These data suggest that S6K1-mediated PIPKIγ90 phosphorylation regulates cell migration and invasion by controlling PIPKIγ90 degradation.
SIGNOR-277283
O95837
P21462
2
binding
up-regulates activity
0.25
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-256961
P09471
Q9H244
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-256991
O43150
Q14289
0
phosphorylation
up-regulates activity
0.525
Tyrosine phosphorylation of Pap by Pyk2 or Src kinases. We have identified a new Pyk2 binding protein designated Pap. Pap is a multidomain protein composed of an N-terminal alpha-helical region with a coiled-coil motif, followed by a pleckstrin homology domain, an Arf-GAP domain, an ankyrin homology region, a proline-rich region, and a C-terminal SH3 domain. We demonstrate that Pap forms a stable complex with Pyk2 and that activation of Pyk2 leads to tyrosine phosphorylation of Pap in living cells.
SIGNOR-269704
Q9UDT6
Q7Z460
2
binding
up-regulates activity
0.594
CLIP-associating protein (CLASP) 1 and CLASP2 are mammalian microtubule (MT) plus-end binding proteins, which associate with CLIP-170 and CLIP-115.|We demonstrate that the middle part of CLASPs binds directly to EB1 and to MTs. | Both EB1- and cortex-binding domains of CLASP are required to promote MT stability.
SIGNOR-265092
P42224
O15111
0
phosphorylation
up-regulates activity
0.331
In addition, IKK\u03b1 also phosphorylated STAT1 in a type I IFN-independent manner [Fig 8, a dashed line (B)].
SIGNOR-279732
P04150
P49715
1
transcriptional regulation
up-regulates quantity by expression
0.455
We show that in addition, DEX-bound GR directly promotes the expression of adipogenic TFs, including C/EBPβ, Klf5, Klf9, and C/EBPα
SIGNOR-256116
P35398
O00327
1
transcriptional regulation
up-regulates quantity by expression
0.689
Direct Regulation of the NPAS2 Promoter by RORα and REV-ERBα. it appears in the context of the NPAS2 promoter RORα functions as a transcriptional activator, but REV-ERBα may only function as an inhibitor of RORα activity by blocking binding.
SIGNOR-267982
P53004
P06213
0
phosphorylation
up-regulates activity
0.479
Human BVR (hBVR) also reduces the hemeoxygenase activity product biliverdin to bilirubin and is directly activated by insulin receptor kinase (IRK).|in addition to Y198 in the YMKM motif, 2 other tyrosines, Y228 in the YLSF motif and Y291 in the C-terminus of the protein, are directly phosphorylated by IRK
SIGNOR-275514
P23528
Q76I76
0
dephosphorylation
up-regulates activity
0.732
Differential activities, subcellular distribution and tissue expression patterns of three members of Slingshot family phosphatases that dephosphorylate cofilin.|Cofilin, a key regulator of actin filament dynamics, is inactivated by phosphorylation at Ser-3 by LIM-kinases and is reactivated by dephosphorylation by a family of protein phosphatases, termed Slingshot (SSH).
SIGNOR-248733
P51828
Q05655
0
phosphorylation
up-regulates activity
0.555
Immunoprecipitation data indicated that PKCdelta could bind and directly phosphorylate AC7.
SIGNOR-279258
Q9UQM7
Q86UR5
1
phosphorylation
up-regulates
0.347
Two serine residues in rim1 (ser-241 and ser-287) and one serine residue in rim2 (ser-335) were required for 14-3-3 binding. Incubation with ca2+/calmodulin-dependent protein kinase ii greatly stimulated the interaction of recombinant n-terminal rim but not the s241/287a mutant with 14-3-3,
SIGNOR-103890
Q12983
Q15382
2
binding
down-regulates
0.751
Bnip3, a hypoxia-inducible bcl-2 homology 3 domain-containing protein, directly binds rheb and inhibits the mtor pathway. Bnip3 decreases rheb gtp levels in a manner depending on the binding to rheb.
SIGNOR-158274
Q5VWQ8
P10275
2
binding
down-regulates activity
0.328
DAB2IP acts as a scaffold protein for PP2A to suppress DHT-elicited S81 phosphorylation of the AR, preventing its nuclear translocation and binding to androgen response elements. In addition, DAB2IP can compete with the AR for binding to c-Src, thus blocking the non-genomic AR pathway
SIGNOR-254758
P01189-PRO_0000024969
Q01726
2
binding
up-regulates activity
0.2
The melanocortin (MC) receptor family consists of five Gs-coupled receptors that control various physiological functions in response to four distinct agonists, adrenocorticotropic hormone (ACTH, also known as corticotrophin) and alpha, beta, and gamma melanocyte-stimulating hormone (MSH), which are derived from the proopiomelanocortin precursor protein, and two inverse agonists, agouti and agouti-related proteins
SIGNOR-268701
Q92630
P04637
1
phosphorylation
up-regulates
0.67
Here, we demonstrate that the dual-specificity tyrosine-phosphorylation-regulated kinase 2 (dyrk2) directly phosphorylates p53 at ser46. these findings indicate that dyrk2 regulates p53 to induce apoptosis in response to dna damage.
SIGNOR-153544
P28482
Q9BYB0
1
phosphorylation
down-regulates activity
0.2
Interestingly, we discovered that several kinases in the MEK and ERK2 pathway destabilize Shank3 and that genetic deletion and pharmacological inhibition of ERK2 increases Shank3 abundance in vivo.|We also determined that phosphorylation of Shank3 by ERK2 at selective residues promotes its ubiquitination and degradation.
SIGNOR-279538
P08651
O00712
2
binding
down-regulates activity
0.362
Coexpression of NFI-B3 with other isoforms of the NFI-B, -C, and -X family, however, led to a strong reduction of transcriptional activation compared with the expression of these factors alone. NFI-B3 apparently forms heterodimers with other NFI proteins thereby interfering with their function.
SIGNOR-240880