IdA
stringlengths 6
21
| IdB
stringlengths 6
21
| labels
int64 0
2
| mechanism
stringclasses 40
values | effect
stringclasses 10
values | score
float64 0.1
0.99
⌀ | sentence
stringlengths 10
1.63k
⌀ | signor_id
stringlengths 12
14
|
|---|---|---|---|---|---|---|---|
P17481
|
P40426
| 2
|
binding
|
up-regulates activity
| 0.484
|
the ability of HoxB8 to heterodimerizes with endogenous Pbx proteins on DNA alters gene transcription in a manner that prevents progression through an intrinsic genetic differentiation program. In conjunction with Pbx, HoxB8 could alter transcription of Pbx target genes by direct or indirect mechanisms.
|
SIGNOR-223149
|
Q15011
|
Q8IUR6
| 0
|
transcriptional regulation
|
up-regulates quantity by expression
| 0.2
|
Luman/CREB3 induces transcription of the endoplasmic reticulum (ER) stress response protein Herp through an ER stress response element.
|
SIGNOR-261575
|
Q92570
|
P04637
| 0
|
transcriptional regulation
|
up-regulates quantity by expression
| 0.264
|
We showed that p53 directly bound the promoter of NR4A3 gene and induced its transcription. p53 transactivates the NR4A3 promoter in H1299 cells.
|
SIGNOR-256200
|
Q92686
|
P17252
| 0
|
phosphorylation
|
up-regulates activity
| 0.394
|
Phosphorylation of RC3 by PKC alpha, beta, or gamma was stimulated by Ca2+, phospholipid, and diacylglycerol. A single site, Ser36, which is adjacent to the predicted calmodulin (CaM)-binding domain, was phosphorylated by these enzymes. Phosphorylation of RC3 by PKC or PKM, a protease-degraded PKC, was inhibited by CaM. The effect of CaM apparently targets at RC3, as phosphorylation of protamine sulfate by PKM was not inhibited by CaM.
|
SIGNOR-248913
|
P31751
|
Q86YS7
| 1
|
phosphorylation
|
up-regulates activity
| 0.513
|
MS analysis of an HA-CDP138 sample from the in vitro kinase assay revealed that active Akt2 induces CDP138 phosphorylation at serine (Ser)197, which lies within a consensus Akt substrate motif RQRLIS 197 ( xref ).
|
SIGNOR-279585
|
P25490
|
P07948
| 0
|
phosphorylation
|
down-regulates activity
| 0.2
|
In the case of Lyn overexpression, single mutations at either tyrosine 8, 254, or 383 severely reduced Lyn-mediated YY1 phosphorylation, suggesting that these three sites may be targets of Lyn in vivo (Fig. 3, A and B).
|
SIGNOR-276930
|
Q9Y2X7
|
P12931
| 0
|
phosphorylation
|
up-regulates activity
| 0.542
|
Tyrosines 246 and 293 are required to hold GIT1 in a closed conformation.Hyperphosphorylation of GIT1-N by Src and pervanadate does not affect its binding in vitro to full length GIT1 proteins. Mutations Y246E and Y293E of GIT1 enhance binding to paxillin.
|
SIGNOR-276627
|
P04233
|
P14174
| 2
|
binding
|
up-regulates
| 0.735
|
Mif binds to the extracellular domain of cd74, and cd74 is required for mif-induced activation of the extracellular signal-regulated kinase-1/2 map kinase cascade, cell proliferation, and pge2 production.
|
SIGNOR-101526
|
P31994
|
P07948
| 0
|
phosphorylation
|
up-regulates activity
| 0.43
|
Therefore, we conclude that FcgammaRIIb1 phosphorylation upon BCR-FcgammaR coligation is most likely due to BCR-associated Lyn
|
SIGNOR-249380
|
Q5JTC6
|
O15169
| 1
|
relocalization
|
up-regulates activity
| 0.789
|
Amer1 binds ck1gamma, recruits axin and gsk3beta to the plasma membrane and promotes complex formation between axin and lrp6.
|
SIGNOR-171886
|
Q00535
|
P50406
| 1
|
phosphorylation
|
down-regulates activity
| 0.374
|
Cdk5 phosphorylates the 5-HT6R on serine 350 (Ser350)|This suggests that the 5-HT6R is unable to interact with GPRIN1 when it is phosphorylated by Cdk5.
|
SIGNOR-264407
|
Q9GZQ4
|
P50148
| 2
|
binding
|
up-regulates activity
| 0.464
|
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-257218
|
O60716
|
P48729
| 0
|
phosphorylation
|
up-regulates activity
| 0.2
|
Moreover, CK1α phosphorylates p120-catenin on Ser268 and Ser269, releasing this protein from the signalosome and facilitating the subsequent phosphorylation of cadherin and the disruption of this cadherin interaction with LRP5/6
|
SIGNOR-277893
|
P20807
|
P20810
| 2
|
binding
|
down-regulates activity
| 0.569
|
In addition to Ca2+, calpastatin has a key role in the regulation of calpain. Calpastatin, a heat-stable protein ranging from ~70 to ~140 kDa of apparent molecular weight depending on the cell type, is considered a specific endogenous inhibitor of calpains|The calpastatin molecule contains four inhibitory units [75–77]. Each of these units binds to one calpain molecule [75–77]. Therefore, the ratio calpain/calpastatin plays a key role in the regulation of calpain activity [78–80]. The inhibitory effect of calpastatin requires Ca2+-dependent high-affinity binding to three sites of calpain
|
SIGNOR-251603
|
Q15418
|
P16220
| 1
|
phosphorylation
|
up-regulates activity
| 0.747
|
The rsks phosphorylate the trascription factor creb at serine 133 to promote cell survival.
|
SIGNOR-72117
|
P23276
|
P14138
| 1
|
cleavage
|
up-regulates activity
| 0.676
|
These data demonstrate that the Kell blood group protein is a proteolytic enzyme that processes big ET-3, generating ET-3, a potent bioactive peptide with multiple biological roles.
|
SIGNOR-256354
|
P45983
|
Q14934
| 1
|
phosphorylation
|
up-regulates activity
| 0.467
|
Here, we showed that the nuclear factor of activated T3 (NFAT3) is phosphorylated by JNK1 or JNK2 at Ser(213) and Ser(217), which are located in the conserved SP motif.|Moreover, a 3xNFAT-luc reporter gene assay indicated that NFAT3 transcriptional activity was increased in a dose dependent manner by JNK1 or JNK2.
|
SIGNOR-280033
|
P20823
|
Q9NPD5
| 1
|
transcriptional regulation
|
up-regulates quantity by expression
| 0.251
|
Farnesoid X receptor, hepatocyte nuclear factors 1alpha and 3beta are essential for transcriptional activation of the liver-specific organic anion transporter-2 gene.|This study demonstrated that the transcription of the LST-2 gene is regulated by three transcription factors, FXR, HNF1alpha, and HNF3beta.
|
SIGNOR-268988
|
P09874
|
P49959
| 1
|
relocalization
|
up-regulates activity
| 0.2
|
PARP1 collaborates with Mre11 to promote replication fork restart after release from replication blocks, most likely by recruiting Mre11 to the replication fork to promote resection of DNA.
|
SIGNOR-272478
|
Q99967
|
P28482
| 0
|
phosphorylation
|
up-regulates activity
| 0.454
|
CITED2 coactivation is enhanced by activation of MAPK1 and requires T166.|CITED2 is phosphorylated by MAPK1 at S85, T166 and T175.
|
SIGNOR-278410
|
P46108
|
P22681
| 2
|
binding
|
up-regulates
| 0.824
|
These results indicate that crk binds to c-cbl in a tyrosine phosphorylation-dependent manner.
|
SIGNOR-39241
|
P38606
|
P25490
| 0
|
transcriptional regulation
|
up-regulates quantity by expression
| 0.325
|
We investigated the relationship between transcription factor YY1 and ATP6V1A, and found that mRNA expression of YY1 had significant correlation with that of ATP6V1A. To validate that YY1 transcriptionally regulates ATP6V1A, we discovered that the ATP6V1A core promoter region contains three YY1 binding sites. Moreover, RNAi-mediated knockdown of YY1 in GC cells significantly decreased ATP6V1A mRNA and protein expression, while YY1 overexpression increased ATP6V1A expression level.
|
SIGNOR-260635
|
P27361
|
Q15366
| 1
|
phosphorylation
|
up-regulates quantity by stabilization
| 0.323
|
We also identified 4 hnRNP-E2 MAPKERK1/2 phosphorylation sites and demonstrated that hnRNP-E2 is a bona fide MAPKERK1/2 substrate and that MAPKERK1/2-dependent phosphorylation of hnRNP-E2 at these amino acid residues is essential for increased hnRNP-E2 expression in BCR/ABL-expressing cells. Serine/threonine to alanine substitution abolishes hnRNP-E2 phosphorylation and markedly decreases its stability in BCR/ABL-expressing myeloid precursors. Consistent with the existence of a BCR/ABL-MAPK pathway that posttranslationally regulates hnRNP-E2 expression, sequence analysis of hnRNP-E2 revealed the presence of 4 consensus ERK phosphorylation sites (S/T-P)35,36 at amino acid residues 173, 189, 213, and 272 (Figure 2B).
|
SIGNOR-262916
|
Q96BA8
|
Q96BA8
| 2
|
binding
|
up-regulates activity
| 0.2
|
E4BP4, ATF-6, OASIS, and XBP-1 all formed strong homodimeric associations on the array Transcription factor dimerization can increase the selectivity of protein-DNA interactions and generate a large amount of DNA binding diversity from a relatively small number of proteins
|
SIGNOR-224205
|
P26012
|
O14713
| 2
|
binding
|
down-regulates activity
| 0.313
|
Integrins also bind to many PTBdomain-containing proteins (Calderwood et al., 2003) – including Dok1 and integrincytoplasmic-domain-associated protein 1 (ICAP1) – and these can compete with talin for binding to integrin and so can impair activation
|
SIGNOR-257667
|
P53701
|
P99999
| 1
|
chemical modification
|
up-regulates activity
| 0.44
|
Cytochrome c oxidase catalyzes the reduction of molecular oxygen to water, a process in which four electrons, four protons, and one molecule of oxygen are consumed. The reaction is coupled to the pumping of four additional protons across the membrane. According to the currently accepted concept, the pumping of all four protons occurs after the binding of oxygen to the reduced enzyme and is exclusively coupled to the last two electron transfer steps.
|
SIGNOR-280296
|
Q92918
|
P00519
| 0
|
phosphorylation
|
up-regulates activity
| 0.379
|
C-Abl phosphorylates HPK1 in cytoplasm and stimulates HPK1 activity. the c-Abl phosphorylation site (YXXP) in HPK1 (Y232QPP; aa 232–235) is localized in HPK1-KD
|
SIGNOR-251429
|
Q14457
|
P46934
| 0
|
ubiquitination
|
up-regulates quantity by stabilization
| 0.46
|
BECN1 stability was increased by NEDD4 via K6 and K27 ubiquitination during autophagy induction, thereby promoting autophagy activation.|Further, NEDD4 mediated K6- and K27- linkage ubiquitination of BECN1, leading to elevated stability of BECN1 and increased autophagy.
|
SIGNOR-278558
|
P00519
|
P46527
| 1
|
phosphorylation
|
down-regulates quantity
| 0.595
|
A conserved tyrosine residue (Y88) in the Cdk-binding domain of p27 can be phosphorylated by the Src-family kinase Lyn and the oncogene product BCR-ABL
|
SIGNOR-245293
|
Q13153
|
P53667
| 1
|
phosphorylation
|
up-regulates activity
| 0.614
|
Activation of lim-kinase by pak1 couplesp21-activated kinase (pak1) phosphorylates lim-kinase at threonine residue 508 within lim-kinase's activation loop
|
SIGNOR-72142
|
O94761
|
Q7L590
| 2
|
binding
|
down-regulates
| 0.509
|
Mcm10 inhibits recq4 helicase activity.
|
SIGNOR-187701
|
Q96TA1
|
P01112
| 2
|
binding
|
up-regulates activity
| 0.2
|
EGFR phosphorylates FAM129B, resulting in binding of phosphorylated FAM129B to H-Ras and reduced the association of p120-RasGAP with H-Ras, thereby enhancing H-Ras activation for ERK1/2-dependent β-catenin transactivation for enhanced Warburg effect, tumor cell proliferation, and brain tumorigenesis.
|
SIGNOR-273659
|
P62837
|
Q9UPQ7
| 2
|
binding
|
up-regulates activity
| 0.385
|
Our initial tests of various E2s showed that the RING domain of PDZRN3 exhibits ubiquitin ligase activity in the presence of E1 and the UbcH5 family of E2 enzymes (Fig. 3 A). Consistent with this finding, GST pull-down assays showed that PDZRN3 directly interacts with the UbcH5B ubiquitin conjugating enzyme (Fig. 3 B).
|
SIGNOR-271663
|
P12931
|
P10301
| 1
|
phosphorylation
|
down-regulates activity
| 0.58
|
The small gtpase, r-ras, affects cell adhesion by maintaining integrin activity. Activated src oncogene phosphorylates r-ras and suppresses integrin activity. the src phosphorylation site in r-ras was tyrosine 66
|
SIGNOR-111189
|
Q9UNE7
|
Q15797
| 1
|
ubiquitination
|
down-regulates
| 0.328
|
These results suggest that chip can interact with the smad1/smad4 proteins and block bmp signal transduction through the ubiquitin-mediated degradation of smad proteins.
|
SIGNOR-120731
|
Q86U86
|
Q13049
| 0
|
ubiquitination
|
down-regulates quantity by destabilization
| 0.2
|
TRIM32 ubiquitination of PB1 leads to its protein degradation.
|
SIGNOR-278735
|
Q969Q1
|
P61088
| 0
|
ubiquitination
|
up-regulates activity
| 0.539
|
We used MuRF1 as the E3 as it functions with all these E2s to ubiquitinate one of its typical substrates, troponin I Although UbcH1 and UbcH13/Uev1a support ubiquitination of troponin I by MuRF1, these E2s do not support ubiquitination of S5a, unlike Class I E2s.
|
SIGNOR-272737
|
P31751
|
P03372
| 1
|
phosphorylation
|
up-regulates activity
| 0.509
|
AKT activate ERalpha in the absence of estrogen. The consensus AKT phosphorylation site Ser-167 of ERalpha is required for phosphorylation and activation by AKT.
|
SIGNOR-251490
|
P30047
|
P30793
| 2
|
binding
|
down-regulates activity
| 0.864
|
The enzyme activity of GTP cyclohydrolase I is controlled by a regulatory protein for this enzyme, GFRP, which is a pentamer of identical subunits. GFRP mediates feedback inhibition of GTP cyclohydrolase I activity by BH4, and the inhibition by BH4 is reversed by phenylalanine
|
SIGNOR-252203
|
Q15643
|
P10827
| 2
|
binding
|
up-regulates
| 0.387
|
Trip230 binds to rb independently of thyroid hormone while it forms a complex with tr in a thyroid hormone-dependent manner. Ectopic expression of the protein trip230 in cells, but not a mutant form that does not bind to tr, enhances specifically tr-dependent transcriptional activity.
|
SIGNOR-50348
|
Q13885
|
Q14980
| 2
|
binding
|
up-regulates
| 0.2
|
Direct binding of numa to tubulin is mediated by a novel sequence motif in the tail domain that bundles and stabilizes microtubules.
|
SIGNOR-116936
|
Q8NER1
|
P29350
| 0
|
dephosphorylation
|
down-regulates activity
| 0.2
|
Shp-1 dephosphorylates TRPV1 in dorsal root ganglion neurons and alleviates CFA-induced inflammatory pain in rats.|These results suggested that Shp-1 dephosphorylated and inhibited TRPV1 in DRG neurons, contributing to maintain thermal nociceptive thresholds in normal rats, and as a compensatory mechanism, Shp-1 increased in DRGs of rats with CFA-induced inflammatory pain, which was involved in protecting against excessive thermal hyperalgesia.
|
SIGNOR-277129
|
P48431
|
P31749
| 0
|
phosphorylation
|
up-regulates quantity by stabilization
| 0.532
|
In contrast, phosphorylation of Sox2 by AKT1 at T118 blocks K119me by Set7 and stabilizes Sox2.
|
SIGNOR-279003
|
P17706
|
P01116
| 1
|
dephosphorylation
|
down-regulates activity
| 0.276
|
Mechanistically, PTPN2 negatively regulates tyrosine phosphorylation of KRAS, which, in turn, affects the activation KRAS and its downstream signaling.
|
SIGNOR-277039
|
O14795
|
Q86UR5
| 0
|
relocalization
|
up-regulates activity
| 0.798
|
N-terminal interactions of RIMs with RAB3 and MUNC13 regulate DCV fusion. Through N-terminal interactions, RIMs position MUNC13 and recruit DCVs via RAB3, which is located on the vesicle
|
SIGNOR-264385
|
Q15796
|
Q96PU5
| 0
|
ubiquitination
|
down-regulates activity
| 0.781
|
Through its ww domain, nedd4l specifically recognizes a tgf-beta-induced phosphothr-protyr motif in the linker region, resulting in smad2/3 polyubiquitination and degradation
|
SIGNOR-217622
|
Q15637
|
P18146
| 2
|
binding
|
up-regulates activity
| 0.295
|
GNRH1 induces expression of early growth response 1 (EGR1), which interacts with steroidogenic factor 1 (SF1) and paired-like homeodomain transcription factor 1 (PITX1) to regulate Lhb promoter activity.
|
SIGNOR-254914
|
Q96KG9
|
P31749
| 0
|
phosphorylation
|
up-regulates activity
| 0.255
|
In previous work, we demonstrated that TEIF (transcriptional element-interacting factor) distributes in the centrosomes and regulates centrosome status under both physiologic and pathologic conditions.|A consensus motif for Akt phosphorylation (RHRVLT) proved to be involved in centrosomal TEIF localization, and the 469-threonine of this motif may be phosphorylated by Akt both in vitro and in vivo. Elimination of this phosphorylated site on TEIF caused reduced centrosome distribution and centrosome splitting or amplification.
|
SIGNOR-265496
|
Q86UT6
|
Q9Y4K3
| 2
|
binding
|
down-regulates activity
| 0.472
|
Immunoprecipitation experiments showed that NLRX1 interacted with TRAF6 and TRAF3, but not with TRAF2 or TRAF5. These results further suggest that NLRX1 specifically inhibits TLR-induced TRAF6-dependent NF-kB signaling through targeting TRAF6.
|
SIGNOR-260364
|
Q99759
|
Q13501
| 1
|
phosphorylation
|
up-regulates activity
| 0.556
|
MEKK3 overexpression, but not that of a kinase dead mutant, was able to induce the phosphorylation of p62 at T269 and S272 (XREF_FIG), which correlated with mTORC1 activation (XREF_FIG), suggesting that MEKK3 could be a bona fide regulator of p62 phosphorylation and mTORC1 activity.
|
SIGNOR-279532
|
O14733
|
Q9UQF2
| 2
|
binding
|
up-regulates
| 0.722
|
Both jip1 and jip2 selectively bind the mapkk isoform mkk7.
|
SIGNOR-70848
|
P07951
|
P48736
| 0
|
phosphorylation
|
up-regulates activity
| 0.335
|
Here, we demonstrate a requirement for the protein kinase activity of PI(3)K in agonist-dependent beta-adrenergic receptor (betaAR) internalization. Using PI(3)K mutants with either protein or lipid phosphorylation activity, we identify the cytoskeletal protein non-muscle tropomyosin as a substrate of PI(3)K, which is phosphorylated in a wortmannin-sensitive manner on residue Ser 61. A constitutively dephosphorylated (S61A) tropomyosin mutant blocks agonist-dependent betaAR internalization, whereas a tropomyosin mutant that mimics constitutive phosphorylation (S61D) complements the PI(3)K mutant, with only lipid phosphorylation activity reversing the defective betaAR internalization.
|
SIGNOR-263028
|
P00533
|
O14939
| 1
|
phosphorylation
|
up-regulates activity
| 0.516
|
Using transiently transfected human embryonic kidney fibroblasts (HEK293), we demonstrate here that PLD1 activity, and to a lesser extent PLD2 activity, is stimulated in response to epidermal growth factor (EGF). PLD2, but not PLD1, associates with the EGF receptor in a ligand-independent manner and becomes tyrosine-phosphorylated upon EGF receptor activation. Tyrosine 11 (Tyr-11) of PLD2 was identified as the specific phosphorylation site. Mutation of this residue to phenylalanine enhanced basal activity almost 2-fold
|
SIGNOR-251095
|
O43597
|
Q9BUB5
| 0
|
phosphorylation
|
down-regulates
| 0.531
|
The spry2/nedd4 association involves the ww domains of nedd4 and requires phosphorylation of the mnk2 kinase sites, ser(112) and ser(121), on spry2. mnk2 silencing decreased spry2-nedd4 interactions and also augmented the ability of spry2 to inhibit fibroblast growth factor signaling. endogenous and overexpressed nedd4 polyubiquitinate spry2 via lys(48) on ubiquitin and decrease its stability.
|
SIGNOR-188889
|
O43683
|
Q12834
| 1
|
phosphorylation
|
down-regulates activity
| 0.992
|
Bub1 directly phosphorylates Cdc20 in vitro and inhibits the ubiquitin ligase activity of APC/C(Cdc20) catalytically. A Cdc20 mutant with all six Bub1 phosphorylation sites removed is refractory to Bub1-mediated phosphorylation and inhibition in vitro.
|
SIGNOR-250606
|
P18887
|
P68400
| 0
|
phosphorylation
|
up-regulates
| 0.395
|
Xrcc1 phosphorylation by ck2 is required for its stability and efficient dna repair
|
SIGNOR-165419
|
Q00535
|
Q8NEB9
| 1
|
phosphorylation
|
down-regulates
| 0.357
|
Thr159 phosphorylation negatively regulates the ptdins3 kinase activity of vps34 and autophagy cdk5/p25, a neuronal cdk shown to play a role in alzheimer's disease, can also phosphorylate thr159 of vps34.
|
SIGNOR-165772
|
Q16549
|
P30305
| 1
|
phosphorylation
|
down-regulates
| 0.2
|
We propose that regulation of cdc25b phosphorylation by p38 is a critical event for initiating the g2/m checkpoint after ultraviolet radiation
|
SIGNOR-107423
|
Q96L34
|
Q15831
| 0
|
phosphorylation
|
up-regulates
| 0.535
|
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-122682
|
O96017
|
Q15717
| 1
|
phosphorylation
|
down-regulates activity
| 0.55
|
Given the fact that Chk2 phosphorylates HuR at residues S88, S100 and T118 and that each individual phosphorylation site by Chk2 plays a distinct role in regulating HuR- binding to different target mRNAs (22,42), we further tested HuR mutants with alanine substitutions at each of the Chk2 phosphorylation sites.
|
SIGNOR-278163
|
P26447
|
P35579
| 2
|
binding
|
down-regulates activity
| 0.418
|
Our results show that S100A4 regulates cell polarization during directed motility by affecting the localization of protrusions through interactions with myosin-IIA, with S100A4 expressing cells displaying few side protrusions and extensive forward protrusions during chemotaxis compared with control cells. The mechanisms by which these antibodies and S100A4 increase protrusive activity and promote cellular motility are not well understood, but the observation that S100A4 can inhibit the actin-activated ATPase of myosin-IIA (34) suggests that S100A4 could function as a myosin-IIA inhibitor in vivo.
|
SIGNOR-269282
|
Q9UKV5
|
P04114
| 1
|
ubiquitination
|
down-regulates quantity by destabilization
| 0.29
|
In physiological condition, the unnecessary apoB is usually ubiquitinated by E3 ligase AMFR, and subsequently degraded by ubiquitination proteasomes.
|
SIGNOR-278685
|
Q00987
|
Q9UN86
| 2
|
binding
|
down-regulates activity
| 0.3
|
G3BP2 binds to MDM2 and decreases its E3 ligase activity. The G3BP2 isoform additionally associated with murine double minute 2 (MDM2), a negative regulator of p53. G3BP2 expression resulted in significant reduction in MDM2-mediated p53 ubiquitylation and degradation.
|
SIGNOR-278892
|
P49137
|
P50549
| 1
|
phosphorylation
|
up-regulates
| 0.612
|
Neverthless, some transcription factors, such as e47, er81, srf and creb are also phosphorylated by mk2
|
SIGNOR-166625
|
P49674
|
O15534
| 1
|
phosphorylation
|
down-regulates quantity by destabilization
| 0.842
|
We show here that mPer proteins, negative limbs of the autoregulatory loop, are specific substrates for CKIepsilon and CKIdelta. The CKI phosphorylation of mPer1 and mPer3 proteins results in their rapid degradation, which is dependent on the ubiquitin-proteasome pathway.
|
SIGNOR-267997
|
P49459
|
P24941
| 0
|
phosphorylation
|
up-regulates
| 0.374
|
Hhr6a is phosphorylated in vitro by cdk-1 and -2 on ser120, a residue conserved in all hhr6a homologues, resulting in a 4-fold increase in its ubiquitin-conjugating activity.
|
SIGNOR-116508
|
O94782
|
Q9BXW9
| 1
|
deubiquitination
|
down-regulates activity
| 0.761
|
The deubiquitinating enzyme USP1 controls the cellular levels of the DNA damage response protein Ub-FANCD2|The level of monoubiquitinated FANCD2 protein increases in response to various types of DNA damage in mammalian cells
|
SIGNOR-263273
|
Q13144
|
P05198
| 1
|
guanine nucleotide exchange factor
|
up-regulates activity
| 0.84
|
EIF2B converts the protein synthesis initiation factor 2 (eIF2) from an inactive GDP-bound form to an active eIF2-GTP complex owing to its guanine nucleotide exchange factor (GEF) activity.
|
SIGNOR-269123
|
P17612
|
P13612
| 1
|
phosphorylation
|
up-regulates activity
| 0.494
|
PKA phosphorylationin vitro blocks the binding of the alpha4 tail to paxillin. A mutation that mimics alpha4 phosphorylation disrupts paxillin binding and promotes cell spreading
|
SIGNOR-110119
|
P08754
|
P31391
| 2
|
binding
|
up-regulates activity
| 0.45
|
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-256823
|
P61586
|
O94989
| 0
|
guanine nucleotide exchange factor
|
up-regulates activity
| 0.571
|
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-260540
|
Q96EP1
|
P09874
| 1
|
polyubiquitination
|
down-regulates quantity by destabilization
| 0.427
|
Here, we show that checkpoint with Forkhead-associated (FHA) and RING finger domain protein (CHFR), an E3 ubiquitin ligase, is recruited to DSBs by poly(ADP-ribose) (PAR). Moreover, CHFR ubiquitinates PAR polymerase 1 (PARP1) and regulates chromatin-associated PARP1 in vivo. Moreover, the poly-ubiquitin chain on PARP1 could be recognized by both anti-K48 and K63-linked poly-ubiquitin chain antibodies, suggesting that CHFR mediates a mixed poly-ubiquitin chain linkage on PARP1. With MG132 treatment, ubiquitinated PARP1 was significantly accumulated (Figure 4D), suggesting that the ubiquitination of PARP1 is likely involved in protein degradation. Consistently, we found that following DNA damage, PARP1 quickly dissociated from the chromatin in the wild-type cells (Figure 4F). However, in the Chfr−/− cells, the dissociation of PARP1 from the chromatin was significantly delayed.
|
SIGNOR-271470
|
P22681
|
P29376
| 0
|
phosphorylation
|
up-regulates
| 0.369
|
Although c-cbl is found to be phosphorylated by ltk and therefore is a second candidate linking ltk with the pi3-kinase pathway along with irs-1, we found that the p85 subunit of pi3 kinase directly binds to tyrosine 753 of ltk, which is located within a yxxm motif, a consensus binding amino acid sequence for the sh2 domain of p85.
|
SIGNOR-49528
|
P01106
|
P30279
| 1
|
transcriptional regulation
|
up-regulates quantity by expression
| 0.45
|
C-myc directly activates transcription of cyclin d1, cyclin d2 and cdk4, and leads to cdk 4/6 activation.
|
SIGNOR-27446
|
O15182
|
Q15154
| 0
|
relocalization
|
up-regulates
| 0.297
|
Rna silencing of pcm-1 leads to reduced assembly of centrin, pericentrin, and ninein at the centrosome
|
SIGNOR-95016
|
Q99835
|
P59768
| 2
|
binding
|
up-regulates
| 0.385
|
Consistent with its predicted topology, smo couples to a specific family of inhibitory g protein (gis) to regulate hh signaling.
|
SIGNOR-199183
|
P78356
|
Q16539
| 0
|
phosphorylation
|
down-regulates
| 0.2
|
Inhibition of pip4kbeta activity occurs through the direct phosphorylation of pip4kbeta at ser326 by the p38 stress-activated protein kinase.
|
SIGNOR-149359
|
P24941
|
P98177
| 1
|
phosphorylation
|
down-regulates
| 0.518
|
Additionally, ck1, dyrk1a, and cdk2 also phosphorylate foxos at various sites to inhibit foxos activity
|
SIGNOR-183655
|
Q92547
|
Q13535
| 2
|
binding
|
up-regulates activity
| 0.814
|
These results establish that TopBP1 can activate both Xenopus and human ATR. Furthermore, these experiments provide conclusive evidence that the kinase activity that is induced by TopBP1 is intrinsic to the ATR protein itself and is not due to a kinase that associates with ATR.
|
SIGNOR-263232
|
P42345
|
O75385
| 1
|
phosphorylation
|
down-regulates activity
| 0.849
|
mTORC1, which is often referred to as the gatekeeper to autophagy, is a key regulator of the Ulk1-Atg13-FIP200 kinase complex.11,14,25 Under nutrient-rich conditions, active mTORC1 associates with and inactivates the Ulk1-Atg13-FIP200 complex by phosphorylating Ulk1 and Atg13.
|
SIGNOR-183903
|
P11308
|
P04628
| 1
|
transcriptional regulation
|
up-regulates quantity by expression
| 0.2
|
Interestingly, our data showed that ERG drastically induced Wnt ligand gene expression.
|
SIGNOR-261597
|
P31994
|
Q86YJ5
| 0
|
ubiquitination
|
down-regulates quantity by destabilization
| 0.2
|
MARCH9, a member of the RING-CH family of transmembrane E3 ubiquitin ligases, down-regulates CD4, major histocompatibility complex-I (MHC), and ICAM-1 in lymphoid cells. To identify novel MARCH9 substrates, we used high throughput flow cytometry and quantitative mass spectrometry by stable isotope labeling by amino acids in cell culture (SILAC) to determine the differential expression of plasma membrane proteins in a MARCH9-expressing B cell line. This combined approach identified 13 potential new MARCH9 targets.
|
SIGNOR-271541
|
P62834
|
O95398
| 0
|
guanine nucleotide exchange factor
|
up-regulates activity
| 0.71
|
Epac1 (cAMP-GEFI) and Epac2 (cAMP-GEFII) are closely related guanine nucleotide exchange factors (GEFs) for the small GTPase Rap1, which are directly regulated by cAMP. Here we show that both GEFs efficiently activate Rap2 as well.
|
SIGNOR-263956
|
Q8IW41
|
P47712
| 1
|
phosphorylation
|
up-regulates activity
| 0.334
|
The p38-activated protein kinases MNK1, MSK1, and PRAK1 phosphorylate cPLA2 in vitro uniquely on Ser-727. By using Chinese hamster ovary, HeLa, and HEK293 cells stably transfected with wild type and phosphorylation site mutant forms of cPLA2, we show that phosphorylation of cPLA2 at both Ser-505 and Ser-727 and elevation of Ca(2+) leads to its activation in agonist-stimulated cells.
|
SIGNOR-250162
|
P38398
|
Q9H4M3
| 2
|
binding
|
down-regulates quantity by destabilization
| 0.369
|
The F-box protein FBXO44 mediates BRCA1 ubiquitination and degradation. The Skp1-Cul1-F-box-protein44 (SCF(FBXO44)) complex ubiquitinates full-length BRCA1 in vitro.
|
SIGNOR-272037
|
Q14344
|
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-257283
|
P78527
|
Q14653
| 1
|
phosphorylation
|
up-regulates
| 0.43
|
Phosphorylation of irf-3 by dna-pk after virus infection results in its nuclear retention and delayed proteolysis
|
SIGNOR-115331
|
O15033
|
Q9NR28
| 1
|
ubiquitination
|
down-regulates quantity by destabilization
| 0.377
|
AREL1 ubiquitinated SMAC, primarily on Lys62 and Lys191 |E701A substitution in the AREL1 HECT domain substantially increased its autopolyubiquitination and SMAC ubiquitination activity, whereas deletion of the last three amino acids at the C terminus completely abrogated AREL1 autoubiquitination and reduced SMAC ubiquitination.
|
SIGNOR-267672
|
Q96RI1
|
Q05513
| 0
|
phosphorylation
|
up-regulates
| 0.38
|
The effect of fic1 on fxr phosphorylation and nuclear localization and its effects on bsep promoter activity could be blocked with protein kinase c zeta (pkc zeta) inhibitors (pseudosubstrate or small interfering rna silencing). Recombinant pkc zeta directly phosphorylated immunoprecipitated fxr. The mutation of threonine 442 of fxr to alanine yielded a dominant negative protein,
|
SIGNOR-179771
|
P28482
|
Q86U44
| 1
|
phosphorylation
|
up-regulates quantity by stabilization
| 0.273
|
Mass spectrometry analysis showed that ERK phosphorylates METTL3 at three highly conserved residues: S43, S50, and S525 (Figures 2D and 2E). Mutational analysis further confirmed these three sites as main ERK phosphorylation sites (Figure 2F). Phosphorylation of METTL3 increases interaction with USP5, decreasing ubiquitination to stabilize the m6 A methyltransferase complex.
|
SIGNOR-265948
|
P06241
|
Q9NWQ8
| 1
|
phosphorylation
|
up-regulates activity
| 0.703
|
Thus, Fyn mediates Csk-binding protein-Csk interaction and recruits Csk to rafts by phosphorylating Csk-binding protein.
|
SIGNOR-279987
|
Q96PZ7
|
P84022
| 2
|
binding
|
up-regulates activity
| 0.2
|
CSMD1 co-immunoprecipitated with SMAD3, confirming our results that CSMD1 interacts with Smad3 in A375 cells. CSMD1 interacts with Smad3 and induces phosphorylation (p-Smad3). Phosphorylated Smad3 promotes Smad2 phosphorylation and Smad2/3/4 complex formation.
|
SIGNOR-265151
|
P42224
|
P40763
| 0
|
transcriptional regulation
|
up-regulates quantity by expression
| 0.615
|
In summary, we report in this study that STAT1 expression is upregulated by nuclear EGFR, EGFRvIII and HER2, and that STAT3 synergizes with the three receptors to further enhance STAT1 expression. These novel findings establish a novel link between the mitogenic ErbB signaling pathway and the inflammatory pathway mediated by STAT1. The oncogenic transcription factor STAT3 binds to the STAT1 promoter and synergizes with nuclear EGFR to significantly enhance STAT1 gene expression.
|
SIGNOR-263650
|
Q6UXZ4
|
P43146
| 2
|
binding
|
down-regulates activity
| 0.584
|
In the presence of netrin-1, UNC5 co-immuno-precipitates with DCC, suggesting the formation of a ternary complex of netrin-1 with ecto-domains of DCC and UNC5. DCC binding to netrin-1 alone leads to axon attraction. Importantly, DCC has the ability to switch the netrin-1-mediated responses from attraction to repulsion when another receptor UNC5 co-exists. DCC binding to netrin-1 alone leads to axon attraction. Importantly, DCC has the ability to switch the netrin-1-mediated responses from attraction to repulsion when another receptor UNC5 co-exists.
|
SIGNOR-268167
|
Q12955
|
Q92823
| 0
|
relocalization
|
up-regulates quantity
| 0.721
|
Neurofascin, L1, NrCAM, NgCAM, and neuroglian are membrane-spanning cell adhesion molecules with conserved cytoplasmic domains that are believed to play important roles in development of the nervous system. This report presents biochemical evidence that the cytoplasmic domains of these molecules associate directly with ankyrins, a family of spectrin-binding proteins located on the cytoplasmic surface of specialized plasma membrane domains.
|
SIGNOR-266720
|
Q12923
|
P12931
| 1
|
dephosphorylation
|
down-regulates activity
| 0.54
|
Mechanistically, RIL suppresses Src activation through interacting with Src and PTPL1, allowing PTPL1 dependent dephosphorylation of Src at the activation loop.|Our results reveal a novel Src inactivation cycle in which reversion-induced LIM preferentially recognizes active Src and facilitates PTPL1-mediated inactivation of Src.
|
SIGNOR-277125
|
Q13144
|
P49840
| 0
|
phosphorylation
|
down-regulates activity
| 0.368
|
We identify multiple phosphorylation sites in the largest, catalytic, subunit (epsilon) of mammalian eIF2B. Glycogen synthase kinase 3 (GSK3) is responsible for phosphorylating Ser535. This regulatory phosphorylation event requires both the fourth site (Ser539) and a distal region, which acts to recruit GSK3 to eIF2Bepsilon in vivo. eIF2Bϵ from mammals or insects is a substrate for glycogen synthase kinase 3 (GSK3), and this inhibits the activity of eIF2B
|
SIGNOR-251215
|
O60260
|
Q8IXI1
| 1
|
polyubiquitination
|
down-regulates quantity by destabilization
| 0.2
|
PINK1 phosphorylates Miro, a component of the primary motor/adaptor complex that anchors kinesin to the mitochondrial surface. The phosphorylation of Miro activates proteasomal degradation of Miro in a Parkin-dependent manner.
|
SIGNOR-272726
|
P38398
|
O75367
| 1
|
ubiquitination
|
up-regulates activity
| 0.2
|
BRCA1 Ubiquitinates K123 of mH2A1 in a Ligase-Activity-Dependent Manner.
|
SIGNOR-278752
|
P31749
|
P67809
| 1
|
phosphorylation
|
up-regulates
| 0.558
|
Phosphorylation of yb-1 at the serine 102 residue is required for transcriptional activation of growth-enhancing genes, such as egfr. Herein, we illustrate that activated akt binds to and phosphorylates the yb-1 cold shock domain at ser102
|
SIGNOR-252521
|
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