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14
Q70EL2
Q96EA4
1
deubiquitination
up-regulates activity
0.2
Spindly is mono-ubiquitylated and this ubiquitin can be removed by active USP45. K48 ubiquitylated complex that interacts with Spindly is also de-ubiquitylated by USP45. In the absence of USP45 catalytic activity, interaction is abolished and cell migration is affected similarly to the phenotype described for lack of Spindly.
SIGNOR-268505
Q14576
Q12955
1
post transcriptional regulation
down-regulates quantity
0.25
NElavl (composed of Elavl2, Elavl3, and Elavl4) proteins are the RNA-binding proteins that is specifically expressed in neurons, regulate the alternative splicing of target RNAs, and promote neuronal differentiation and maturation. Here, we found that the alternative splicing of AnkyrinG exon 34 was misregulated in the cerebella of Elavl3-/- mice. AnkyrinG is an essential factor for the formation of neuronal polarity and is required for normal neuronal functions.
SIGNOR-266861
Q14191
Q13535
0
phosphorylation
down-regulates quantity
0.794
Importantly, ATR-mediated phosphorylation targets Werner syndrome protein for ubiquitination and degradation.|WRN is phosphorylated at serine 1141 by ATR in response to replication-associated DSBs A. WRN is heavily phosphorylated at S1141 in response to CPT treatment of cells.
SIGNOR-278159
O75367
Q8IWR1
0
polyubiquitination
down-regulates quantity by destabilization
0.2
Nuclear TRIM59 induces ubiquitination and degradation of the tumor suppressive histone variant macroH2A1, leading to enhanced STAT3 signaling activation and tumorigenicity. 
SIGNOR-272931
P30679
Q9GZQ4
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-257352
Q92520
P42702
2
binding
up-regulates activity
0.2
Interleukin-like EMT inducer (ILEI) a cytokine from the FAM3 family, also functions as a ligand for LIFR-gp130 heterodimer and mediates intracellular signal through STAT activation.
SIGNOR-277986
P41235
P54646
0
phosphorylation
down-regulates quantity by destabilization
0.367
AMPK directly phosphorylates HNF4alpha and represses its transcriptional activity. AMPK-mediated phosphorylation of HNF4alpha on serine 304 had a 2-fold effect, reducing the ability of the transcription factor to form homodimers and bind DNA and increasing its degradation rate in vivo. Phosphorylation of HNF4α on Ser-304 reduces protein stability.
SIGNOR-250322
O95835
P06493
0
phosphorylation
up-regulates
0.389
Warts is a serine/threonine kinase and a dynamic component of the mitotic apparatus. We have found that cdc2/cyclin b forms a complex with a fraction of warts in the centrosome and phosphorylates the ser613 site of warts during mitosisit can be speculated that phosphorylation of warts by cdc2/cyclin b promotes a protein complex formation on the mitotic apparatus at early mitosis, which may be required for subsequent activation of warts kinase at the metaphase-anaphase transition.
SIGNOR-94160
O95136
P09471
2
binding
up-regulates activity
0.385
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-257007
Q15797
Q8N4C8
0
phosphorylation
down-regulates activity
0.2
Msn kinases directly phosphorylate α-helix 1 of Smad. we have identified Misshapen (Msn) and the mammalian orthologs TNIK, MINK1, and MAP4K4 as the kinases responsible for α-helix 1 phosphorylation. 
SIGNOR-276336
P23443
P06493
0
phosphorylation
up-regulates
0.384
Interestingly, phosphorylation at several ser/thr residues within the c-terminal autoinhibitory tail appears to either activate or inhibit s6k1, depending on the cell cycle phase. phosphorylation of those residues (featured by the thr-421/ser-424 site) during mitosis pursued by cdk1 inactivates s6k1 we then assessed the phosphorylation status of the mitosis-specific inhibitory residue of s6k1, thr-421/ser-424, which is targeted by mitotic cdk1.
SIGNOR-111507
Q9NXK8
Q14012
1
ubiquitination
down-regulates quantity
0.475
Here, we show that a ubiquitin E3 ligase component, F-box protein Fbxl12, mediates CaMKI degradation via a proteasome-directed pathway leading to disruption of cyclin D1/cdk4 complex. Endogenous Fbxl12 and CaMKI interacted as demonstrated after Fbxl12 immuno-precipitation followed by immunoblot analysis with CaMKI antibodies assembly and resultantG1 arrest in lung epithelia. Fbxl12 targets CaMKI for ubiquitination.
SIGNOR-261193
P19784
Q15022
1
phosphorylation
up-regulates activity
0.2
CK2 is the kinase for the phosphorylation of S583 of SUZ12.
SIGNOR-277797
O00444
Q15154
1
phosphorylation
up-regulates activity
0.573
Plk4‚Äêmediated phosphorylation of PCM1 at S372 is critical for the proper localisation of centriolar satellites, its dimer formation and interaction with other satellite components|Therefore, Plk4 is responsible for PCM1 phosphorylation at S372.
SIGNOR-279556
Q9UMX1
Q8TBB1
0
ubiquitination
down-regulates quantity
0.2
Indeed, they target different lysine residues in the SuFu protein, as LNX1 ubiquitinates SuFu at K59 and K470, and SCF Fbxl17 acts at K257, while Itch ubiquitinates at K321 and K457.|XREF_FIG, ectopic LNX1 expression reduced SuFu protein levels in HEK-293T cells, while shRNA mediated knockdown of LNX1 increased these levels.
SIGNOR-278626
O60260
Q00535
0
phosphorylation
down-regulates
0.2
Phosphorylation by cdk5 decreased the auto-ubiquitylation of parkin both in vitro and in vivo.
SIGNOR-153445
Q8IWR1
Q9BQ95
2
binding
down-regulates activity
0.518
In this study, we showed that one of the TRIM family ubiquitin ligases, TRIM59, interacts with ECSIT as an adaptor protein required for the TLR-mediated transduction pathway. The B-box and RING domains of TRIM59 are important for interaction with ECSIT.|ECSIT enhances IPS-1-mediated IFN-Beta promoter activation.|Luciferase reporter assays using reporter plasmids including NF-kappaB responsive element, interferon beta (IFN-beta) promoter and interferon-sensitive response element (ISRE) showed that overexpression of TRIM59 repressed their transcriptional activities, whereas knockdown of TRIM59 enhanced their transcriptional activities.
SIGNOR-260369
P51813
P25116
1
phosphorylation
down-regulates activity
0.2
As shown in xref \u2013 xref , BMX overexpression increased PAR1-WT phosphorylation but had no effect on PAR1 Y 381 FY 383 F mutant, indicating that BMX phosphorylated PAR1 at Y 381 and Y 383 .|Mechanically , BMX represses PAR1 signaling in ECs by promoting PAR1 phosphorylation and internalization .
SIGNOR-279593
P78352
P12931
0
phosphorylation
up-regulates
0.565
These results indicate that psd-95 phosphorylation by src facilitates the integration of pyk2 to psd-95 signal complex, the activation of pyk2/src, as well as the subsequent tyrosine phosphorylation of nr2a, which ultimately results in the upregulation of nmda receptor function and synaptic transmission.
SIGNOR-205120
O96013
O96013
2
phosphorylation
up-regulates
0.2
Intracellular localization;enzymatic activity, induced;cell growth, altered;
SIGNOR-168301
P62837
O95071
1
ubiquitination
up-regulates activity
0.508
Using an in vitro reconstitution, specific E2 (ubiquitin-conjugating) enzymes (human UbcH4, UbcH5B, and UbcH5C) transferred ubiquitin molecules to hHYD, leading to the ubiquitination of TopBP1. TopBP1 was usually ubiquitinated and degraded by the proteosome, whereas X-irradiation diminished the ubiquitination of TopBP1 probably via the phosphorylation, resulting in the stable colocalization of up-regulated TopBP1 with gamma-H2AX nuclear foci in DNA breaks.
SIGNOR-272668
P01137
P02452
1
transcriptional regulation
up-regulates quantity by expression
0.485
COL1A1 expression is regulated by upstream genes and the binding of regulatory elements at multiple binding sites upstream of its promoter. During cancer progression, CAFs reorganize and cross-link COL1A1, which accumulates and stiffens in the tumor stroma [12], [18]. This process may involve fibrogenic factors, especially transforming growth factor-beta (TGF-β1). Indeed, a TGF-β1 response sequence was identified 174 nucleotides upstream of the COL1A1 transcription start site, and was shown to up-regulate COL1A1 promoter activity
SIGNOR-277678
Q15139
Q05655
0
phosphorylation
up-regulates
0.269
Here we show that activation of pkd in response to oxidative stress requires two sequential signaling events, i.e., phosphorylation of tyr463 by abl, which in turn promotes a second step, phosphorylation of the pkd activation loop (ser738/ser742). We show that this is mediated by pkcdelta (protein kinase cdelta)
SIGNOR-123453
Q05655
P05107
1
phosphorylation
up-regulates
0.329
In this study, we present evidence that pkc isoforms are the major protein kinases that phosphorylate the c terminus of the integrin cd18 chain in leukocytes. Ser-745 is identified as a novel phosphorylation site in the integrin cytoplasmic domain. Additionally, we show that a thr-758-phosphorylated integrin peptide can interact with 14-3-3 proteins in leukocyte lysates
SIGNOR-178897
P25098
Q13304
1
phosphorylation
down-regulates activity
0.2
As depicted in Fig. 8 A and B, GRK2 silencing resulted in up-regulation of GPR17 and down-regulation of the mature markers CNPase and MBP, indicating a shift of cells toward a less differentiated stage.Having established that, in primary cultured OPCs, LTD 4 mediated desensitization of GPR17 through the primary recruitment of GRK2, we then asked whether GRK2 pharmacological inhibition had any effects on cysLT promoted cell maturation.|These data demonstrate that LTD 4 -induced GPR17 phosphorylation is preferentially mediated by GRK2 and only partially by GRK5, whereas UDP-glucose-mediated receptor phosphorylation exclusively requires the GRK5 isoform.We examined the involvement of GRK2 and GRK5 in agonist induced desensitization of GPR17.
SIGNOR-279999
Q8NEZ5
P04637
1
ubiquitination
down-regulates quantity by destabilization
0.338
We demonstrate here that SCFFbxo22-KDM4A is a senescence-associated E3 ligase targeting methylated p53 for degradation. We find that Fbxo22 is highly expressed in senescent cells in a p53-dependent manner, and that SCFFbxo22 ubiquitylated p53 and formed a complex with a lysine demethylase, KDM4A. |SCFFbxo22 forms a ternary complex with p53 and KDM4A that targets methylated p53 for degradation.
SIGNOR-273448
O43353
Q9Y4K3
2
binding
up-regulates activity
0.685
Binding of bacterial MDP or viral RNA to NOD2 results in the association of RIPK2 with TRAF6 and subsequent activation of TRAF6.
SIGNOR-280456
Q8TEW0
Q05513
0
phosphorylation
up-regulates
0.711
These results imply that serine 827 in the apkc binding site of par-3 is a target of apkc and that the regulated interaction between a protein kinase, apkc, and its substrate, par-3, plays an essential role in the establishment of cell polarity
SIGNOR-94523
O43791
P10070
1
ubiquitination
down-regulates quantity
0.71
RNAi knockdown of Spop (a substrate-binding adaptor for the cullin3-based ubiquitin E3 ligase) in Sufu mutant mouse embryonic fibroblasts (MEFs) can restore the levels of Gli2 and Gli3 full-length proteins
SIGNOR-268860
Q9NRM7
P17612
0
phosphorylation
up-regulates
0.2
Here, we show that cyclic amp (camp)-dependent protein kinase (pka) phosphorylates lats and thereby enhances its activity sufficiently to phosphorylate yap on ser381.
SIGNOR-236994
P62714
O14757
1
dephosphorylation
down-regulates activity
0.266
Phosphorylation of Chk1 by ATR is antagonized by a Chk1-regulated protein phosphatase 2A circuit|In response to genotoxic stress, Chk1 is phosphorylated on serines 317 (S317) and 345 (S345) by the ataxia-telangiectasia-related (ATR) protein kinase. Phosphorylation of Chk1 on these C-terminal serine residues is used as an indicator of Chk1 activation in vivo.
SIGNOR-248578
Q07666
P06213
0
phosphorylation
up-regulates activity
0.363
Thus, Tyr phosphorylation of Sam68 by IR could modulate its association with the splicing machinery in a similar way to that described for p59 fyn, and this way, it could influence splice site selection.
SIGNOR-278946
P41743
P61019
2
binding
down-regulates activity
0.456
Rab2 Binds to the PKCι/λ Regulatory Domain and Inhibits PKCι/λ-dependent GAPDH Phosphorylation
SIGNOR-261301
P16949
Q8NG68
2
binding
down-regulates
0.389
Stathmin depresses ttl tubulin tyrosination activityin vitro.
SIGNOR-193465
Q9UBE8
P46531
1
phosphorylation
down-regulates
0.382
Nlk-phosphorylated notch1icd is impaired in its ability to form a transcriptionally_ active_ ternary_ complex.
SIGNOR-163697
Q8IUR6
Q15011
1
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
O76050
O76083
1
polyubiquitination
down-regulates quantity by destabilization
0.2
Neuralized family member NEURL1 is a ubiquitin ligase for the cGMP-specific phosphodiesterase 9A. We also demonstrate that NEURL1 can promote polyubiquitination of PDE9A that leads to its proteasome-mediated degradation mainly via lysine residue K27 of ubiquitin.
SIGNOR-272305
Q13569
Q9NZJ0
2
binding
down-regulates quantity by destabilization
0.358
TDG Is Polyubiquitinated by CRL4Cdt2 E3 Ubiquitin Ligase in a PIP Degron-dependent Manner
SIGNOR-272847
P54727
P23025
2
binding
up-regulates activity
0.769
GG-NER is initiated by the GG-NER specific factor XPC-RAD23B, in some cases with the help of UV-DDB (UV-damaged DNA-binding protein). TC-NER is initiated by RNA polymerase stalled at a lesion with the help of TC-NER specific factors CSA, CSB, and XAB2. Both pathways require the core NER factors to complete the excision process|The core NER dual incision reaction has been reconstituted in vitro with purified factors using XPC-RAD23B, TFIIH, XPA, RPA, XPG, and ERCC1-XPF (Aboussekhra et al. 1995; Mu et al. 1995; Araujo et al. 2000).|The core NER dual incision reaction has been reconstituted in vitro with purified factors using XPC-RAD23B, TFIIH, XPA, RPA, XPG, and ERCC1-XPF (Aboussekhra et al. 1995; Mu et al. 1995; Araujo et al. 2000). Functional studies revealed that XPC-RAD23B is the initial damage recognition factor in this system, as the presence of XPC-RAD23B is required for assembly of the other core NER factors and progression through the NER pathway both in vitro and in vivo
SIGNOR-275697
O60216
P23769
1
relocalization
down-regulates activity
0.325
Large-scale AML genome re-sequencing efforts have identified novel recurrently mutated genes, including the members of the cohesin complex (RAD21, SMC3, SMC1A, and STAG2), implicated in the pathogenesis of this disease.Using ATAC-seq, we determined that mutant cohesin lead to a state of elevated chromatin accessibility and higher predicted binding at transcription factor binding sites for ERG, GATA2, and RUNX1. Moreover, using ChIP-Seq, we formally demonstrated increased binding of GATA2 and RUNX1 to these sites. Finally, we demonstrated that knockdown of these three TFs in human HSPC can revert the differentiation block induced by mutant cohesin. These results support a model in which mutant cohesin impairs hematopoietic differentiation and enforces stem cell programs through the modulation of ERG, GATA2, and RUNX1 chromatin accessibility, expression, and activity.
SIGNOR-261513
P27694
Q9UMS4
0
polyubiquitination
up-regulates activity
0.509
PRP19 is a ubiquitin ligase involved in pre-mRNA splicing and the DNA damage response (DDR). PRP19 ubiquitylates RPA and promotes ATRIP recruitment.
SIGNOR-272076
Q92783
O60674
0
phosphorylation
up-regulates
0.617
Stam is associated with jak3 and jak2 tyrosine kinases via its itam region and phosphorylated by jak3 and jak2 upon stimulation with il-2.
SIGNOR-47834
P19086
P48039
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-257101
Q14247
Q8WZ74
2
binding
up-regulates activity
0.511
Fluorescence recovery after photobleaching further suggested that CTTNBP2 modulates the mobility of cortactin in neurons. CTTNBP2 may thus help to immobilize cortactin in dendritic spines and control the density of dendritic spines.
SIGNOR-269703
Q969T4
P25963
1
sumoylation
up-regulates quantity by stabilization
0.346
In the presence of an E1 SUMO-1-activating enzyme, Ubch9 conjugated SUMO-1 to IkappaBalpha primarily on K21, which is also utilized for ubiquitin modification. Thus, SUMO-1-modified IkappaBalpha cannot be ubiquitinated and is resistant to proteasome-mediated degradation. 
SIGNOR-270545
O43561
P45983
0
phosphorylation
down-regulates
0.308
Lat, an adapter protein essential for t-cell signaling, is phosphorylated at its thr 155 by erk in response to t-cell receptor stimulation. Thr 155 phosphorylation reduces the ability of lat to recruit plcgamma1 and slp76, leading to attenuation of subsequent downstream events such as [ca2+]i mobilization and activation of the erk pathway.Mutational analysis revealed that t155 but not t94 or t140 is the site of jnk-mediated phosphorylation (figure 2b). Erk also phosphorylated lat at t155 (figure 2c), whereas p38, which was able to phosphorylate atf2, failed to induce threonine phosphorylation of lat (figure 2d). These results indicate that lat is directly phosphorylated by erk and jnk at the same site, t155.
SIGNOR-125774
Q5JVS0
P05771
0
phosphorylation
down-regulates activity
0.29
We found a strong phosphorylation of Ki-1/57 by PKCalphabeta, PKCdelta, PKClambda/zeta, and especially by PKCsigma, however not by PKCmi. These data show that Ki-1/57 can serve in principal as a substrate for a wide variety of different PKC isoforms but also that its phosphorylation is strongest with PKCsigma. | This suggests that the two threonine residues present in this fragment (Thr354 and Thr375) might be the main target residues for phosphorylation by PKC in vitro. | Ki-1/57 Exits the Nucleus upon PMA Activation
SIGNOR-249247
P21399
P17252
0
phosphorylation
down-regulates
0.2
Irp1 ser-711 is a phosphorylation site, critical for regulation of rna-binding and aconitase activities.
SIGNOR-133188
P05112
P31785
2
binding
up-regulates
0.858
The common gamma-chain (gamma(c)) is an indispensable subunit of the functional receptor complexes for il-4, il-7, il-9, and il-15 as well as il-2. Here we show that the gamma(c) is also shared with the il-21r complex
SIGNOR-108861
P23771
P17676
2
binding
down-regulates
0.352
In the present study, we demonstrate that both gata-2 and gata-3 form protein complexes with ccaat/enhancer binding protein alpha (c/ebpalpha) and c/ebpbeta, members of a family of transcription factors that are integral to adipogenesis. []the interaction between gata and c/ebp factors is critical for the ability of gata to suppress adipocyte differentiation.
SIGNOR-132952
Q53EL6
Q9Y297
0
ubiquitination
down-regulates
0.425
Both akt and p70(s6k) phosphorylate pdcd4, allowing for binding of the e3-ubiquitin ligase beta-trcp and consequently ubiquitylation.
SIGNOR-160985
Q9UHD2
O00571
1
phosphorylation
up-regulates activity
0.721
Coexpression of TBK1 strongly increased the activity of DDX3X.|This suggests that DDX3X is rather specifically phosphorylated by TBK1 and IKK-i.
SIGNOR-278997
P10415
Q86UR1
0
null
down-regulates activity
0.2
BH3-only proteins containing only a single BH domain and including Puma, Noxa, Bid and Bad as well as other factors are particularly important for such neutralisation, binding and regulating the anti-apoptotic Bcl-2 proteins to promote apoptosis
SIGNOR-209684
Q9Y613
Q13976
0
phosphorylation
up-regulates
0.354
Pkgi also directly phosphorylates fhod1, and studies with wild-type and mutant fhod1-derived peptides identify ser-1131 in the fhod1 c terminus as the unique pkgi phosphorylation site in fhod1. phosphorylation of three conserved residues within the dad domain activates fhod1 while binding to rac regulates fhod1 subcellular localization
SIGNOR-123646
Q13618
Q8N653
2
binding
up-regulates activity
0.273
Leucine zipper-like transcriptional regulator 1 (LZTR1) encodes a member of the BTB-Kelch superfamily, which interacts with the Cullin3 (CUL3)-based E3 ubiquitin ligase complex.
SIGNOR-269070
Q96EB6
P98177
1
deacetylation
up-regulates
0.744
Deacetylation of foxos involves binding of the nad-dependent deacetylase hsir2(sirt1). Accordingly, hsir2(sirt1)-mediated deacetylation precludes foxo inhibition through acetylation and thereby prolongs foxo-dependent transcription of stress-regulating genes.
SIGNOR-124714
P24928
Q9NP77
0
dephosphorylation
up-regulates activity
0.855
Phosphorylation of serine-2 (S2) and serine-5 (S5) of the C-terminal domain (CTD) of RNA polymerase II (RNAP II) is a dynamic process that regulates the transcription cycle and coordinates recruitment of RNA processing factors. The Fcp1 CTD phosphatase catalyzes dephosphorylation of S2-P.| Depletion of Ssu72 impairs transcription in vitro
SIGNOR-248815
Q02750
P28482
2
phosphorylation
up-regulates activity
0.75
Mapk1 is phosphorylated by map2k1/mek1 and map2k2/mek2 on thr-185 and tyr-187 in response to external stimuli like insulin or ngf. Both phosphorylations are required for activity.
SIGNOR-236447
P17676
Q8N695
1
transcriptional regulation
up-regulates quantity by expression
0.2
Luciferase reporter assays of deletion mutants of SLC5A8 promoter demonstrated that a 295-bp region is essential for the basal promoter activity of the SLC5A8 gene. Further analysis indicated that the CCAAT boxes and GC boxes were involved in positive regulation of SLC5A8 promoter. Overexpression of two transcription factors, CCAAT/enhancer binding protein beta (C/EBPbeta) and specific transcription factor 1 (Sp1), upregulated the activities of the human SLC5A8 promoter and protein expression, suggesting that both C/EBPbeta and Sp1 transcription factors might have functions in SLC5A8 transcription.
SIGNOR-254054
Q99677
P63092
2
binding
up-regulates activity
0.385
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-256785
P47900
P38405
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-256943
P06241
Q16539
1
phosphorylation
up-regulates
0.489
T cell src family kinases and zap70 activate p38 by phosphorylating tyr323.
SIGNOR-134293
P30989
P34947
0
phosphorylation
up-regulates activity
0.594
Here we report the unique phosphorylation\nof NTSR1 by GRK2 and GRK5, which belong to the GRK2 and GRK4 subfamilies,\nrespectively.
SIGNOR-278234
P19838
P04150
0
transcriptional regulation
down-regulates quantity by repression
0.6
We have described how the receptor uses several means to achieve repression of the genes regulated by AP-1 and NF-KB proteins
SIGNOR-251680
P00519
P29350
1
phosphorylation
up-regulates activity
0.414
The results demonstrate that the SH3 domain of ABL1 interacts with a WPDHGVPSEP motif (residues 417-426) in the catalytic domain of SHPTP1 and that ABL1 phosphorylates C terminal Y536 and Y564 sites.
SIGNOR-260820
P67775
P35222
1
dephosphorylation
up-regulates
0.462
In the absence of the wt apc protein, phosphorylated beta-catenin is rapidly dephosphorylated by serine/threonine protein phosphatase 2a (pp2a). phosphorylated beta-catenin associated with the wild-type apc protein is recruited to the scf(beta-trcp) complex, ubiquitin conjugated, and degraded.
SIGNOR-182637
P55036
Q05086
0
polyubiquitination
down-regulates quantity by destabilization
0.463
S5a/Rpn10 is a ubiquitin (Ub)-binding protein that is a subunit of the 26S proteasome but also exists free in the cytosol. It binds poly-Ub chains through its two Ub-interacting motifs (UIMs). We discovered that, unlike typical substrates of Ub ligases (E3s), S5a can be ubiquitinated by all E3s tested including multimeric and monomeric Ring finger E3s (MuRF1, Siah2, Parkin, APC, and SCF(betaTRCP1)), the U-box E3, CHIP, and HECT domain E3s (E6AP and Nedd4) when assayed with UbcH5 or related Ub-conjugating enzymes.The short half-life of S5a presumably is because of the presence of the UIM domain and reflects the ubiquitination of free S5a by many E3s. Surprisingly, the same four Lys residues on S5a, Lys-74, Lys-122, Lys-262, and Lys-365 were ubiquitinated by MuRF1 and E6AP (Fig. 10). Two additional Lys residues (Lys-126 and -135) were ubiquitinated by E6AP.
SIGNOR-272746
O14640
O75084
2
binding
up-regulates
0.661
In non-canonical Wnt signalling, Wnt proteins bind Fzd and glypican-4, to activate Dsh at the cell membrane, leading to activation of Rho and JNK
SIGNOR-255893
O43251
O14920
0
phosphorylation
up-regulates activity
0.2
Phosphorylation of RTA by IKKbeta increases RTA transcriptional activity and consequently viral mRNA production.
SIGNOR-279336
Q15121
P31749
0
phosphorylation
up-regulates activity
0.517
Protein kinase b/akt binds and phosphorylates ped/pea-15, stabilizing its antiapoptotic action.
SIGNOR-102092
Q13651
P22301
2
binding
up-regulates
0.914
Functionally active il-10 receptors are composed of two distinct subunits. The il-10 receptor ? Chain is a 110-kda polypeptide that plays the dominant role in mediating high affinity ligand binding and signal transduction. The il-10 receptor ? Subunit (also known as crf2_4) is predicted to be a 40-kda polypeptide that is largely required only for signaling
SIGNOR-67964
P08754
P35346
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-256833
P06744
Q9UKV5
2
binding
up-regulates
0.53
Pgi is a housekeeping gene encoding phosphoglucose isomerase (pgi) a glycolytic enzyme that also functions as a cytokine (autocrine motility factor (amf)/neuroleukin/maturation factor) upon secretion from the cell and binding to its 78 kda seven-transmembrane domain receptor (gp78/amf-r)
SIGNOR-97270
Q00535
Q05397
1
phosphorylation
up-regulates
0.305
Here, we show that fak phosphorylation by cdk5 at s732 is important for microtubule organization, nuclear movement, and neuronal migration. In cultured neurons, s732-phosphorylated fak is enriched along a centrosome-associated microtubule fork that abuts the nucleus. Overexpression of the nonphosphorylatable mutant fak s732a results in disorganization of the microtubule fork and impairment of nuclear movement in vitro, and neuronal positioning defects in vivo.
SIGNOR-86223
P49757
Q00987
2
binding
down-regulates
0.444
Numb interacts with mdm2, and inhibits its ubiquitin-ligase function on tp53 (which in itself is inhibitory for tp53), thus numb activates (b) tp53
SIGNOR-168454
P20807
P49840
1
cleavage
up-regulates activity
0.2
Thus, it has been shown that calpain cleaves the inhibitory domain of GSK3 generating two fragments of 40 and 30 kDa. This cleavage enhanced activity of the kinase
SIGNOR-251606
P30411
P25098
0
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
P36894
P12643
2
binding
up-regulates
0.929
BMP interacts with specific receptors on the cell surface, BMP receptor types 1 and 2 (BMPr1 and BMPr2).
SIGNOR-253547
P21127
Q07955
1
phosphorylation
up-regulates activity
0.283
In comparison, CLK1 expression leads to speckle dissolution and diffuse GFP-SRSF1 localization in the nucleus.|We showed that CLK1 phosphorylates SRSF1 at approximately 18 sites inducing a gel shift from 35 to about 38 kDa on SDS-PAGE (XREF_FIG, upper panel).
SIGNOR-279499
Q13535
Q8N163
1
phosphorylation
up-regulates activity
0.438
 Here, we report that, in human cell lines, DNA damage triggered the phosphorylation of DBC1 on Thr454 by ATM (ataxia telangiectasia-mutated) and ATR (ataxia telangiectasia and Rad3-related) kinases. Phosphorylated DBC1 bound to and inhibited SIRT1, resulting in the dissociation of the SIRT1-p53 complex and stimulating p53 acetylation and p53-dependent cell death. 
SIGNOR-267662
O00141
P28482
1
phosphorylation
up-regulates activity
0.309
SGK1 was found to physically interact with ERK1/2 as well as MEK1/2. Furthermore, SGK1 mediated the phosphorylation of ERK2 on Ser(29) in a serum-dependent manner. Replacement of Ser(29) to aspartic acid, which mimics the phosphorylation of Ser(29), enhanced the ERK2 activity as well as the MEK/ERK complexes formation.
SIGNOR-276223
P19174
P35968
2
binding
up-regulates
0.675
(vegfr) phosphorylated y1175 creates a binding site for phospholipase cgamma1 (plc-gamma1)
SIGNOR-147870
Q08828
P63092
2
binding
up-regulates activity
0.627
Because adenylyl cyclases are directly activated by G(s)alpha and the carboxyl termini of the various Galpha proteins determine their receptor coupling specificity, we proposed a set of chimeric G(s)alpha where the COOH-terminal five amino acids are replaced by those of other Galpha proteins and used these to dissect the potential Galpha linked to a given GPCR
SIGNOR-156958
Q13627
P13807
1
phosphorylation
down-regulates activity
0.267
DYRK Family Protein Kinases Phosphorylate and Inactivate Glycogen Synthase. both protein kinases phosphorylate site 3a but no other sites that affect glycogen synthase activity.
SIGNOR-260632
P38936
O43293
0
phosphorylation
up-regulates quantity by stabilization
0.316
ZIP kinase phosphorylates p21(WAF1) at Thr145 and alanine-substituted mutations in the p21(WAF1) phosphorylation site alter its ability to be phosphorylated by ZIP kinase. | Transfected ZIPK can promote the phosphorylation of p21(WAF1) at Thr145 in vivo and can increase the half-life of p21(WAF1)
SIGNOR-251085
P05112
O95644
0
transcriptional regulation
up-regulates quantity by expression
0.549
Recombinant NFAT1 can mediate transcription of the interleukin-2, interleukin-4, tumor necrosis factor alpha, and granulocyte-macrophage colony-stimulating factor promoters in T cells, suggesting that NFAT1 contributes to the CsA-sensitive transcription of these genes during the immune response.
SIGNOR-254498
P06239
P07766
1
phosphorylation
up-regulates activity
0.692
Tyrosine Phosphorylation of CD8- Chimeras by Lck and ZAP-70 in COS Cells. both Y170F and Y181F chimeric proteins could be efficiently phosphorylated by Lck in vivo. phosphorylation of Y170 and Y181 within CD3- –ITAM provides to CD3- the potential to interact with multiple downstream effectors and signaling pathways.
SIGNOR-251369
Q92949
P48380
2
binding
up-regulates activity
0.548
RFX3 acts as a transcriptional co-activator to FOXJ1 that enhances the expression of cilia-associated genes. FOXJ1 is an important regulator of cilia gene expression during ciliated cell differentiation, with RFX3 as a transcriptional co-activator to FOXJ1, helping to induce the expression of cilia genes in the process of ciliated cell differentiation of basal/progenitor cells.
SIGNOR-266929
Q8WU20
P04629
2
binding
up-regulates
0.779
The signaling adapter frs-2 competes with shc for binding to the nerve growth factor receptor trka:a model for discriminating proliferation and differentiation
SIGNOR-65955
Q13153
P16333
2
binding
up-regulates activity
0.709
Both nck and grb4 proteins could associate with receptor tyrosine kinases and the sh3-binding proteins pak, sos1, and prk2, and they synergized with v-abl and sos to induce gene expression via the transcription factor elk-1. Association of nck with pak1 may serve to link this important regulatory kinase to cell activation by growth factor receptors.
SIGNOR-236512
Q5TZA2
Q96CN5
2
binding
up-regulates activity
0.44
Here, we show that LRRC45 is a centrosome linker that localizes at the proximal ends of the centrioles and forms fiber-like structures between them. Depletion of LRRC45 results in centrosome splitting during interphase. LRRC45 interacts with C-Nap1 and rootletin
SIGNOR-273704
O43318
Q12933
0
ubiquitination
up-regulates activity
0.597
Tumor necrosis factor receptor-associated factors 2 and 6 (traf2 and -6) act as the ubiquitin e3 ligases to mediate lys63-linked tak1 polyubiquitination at the lys158 residue in vivo and in vitro. Lys(63)-linked TAK1 polyubiquitination at the Lys(158) residue is required for TAK1-mediated IKK complex recruitment.
SIGNOR-162638
Q96GX5
Q96GX5
2
phosphorylation
up-regulates activity
0.2
After this priming step, Gwl can intramolecularly phosphorylate its C-terminal tail at pS883; this site probably plays a role similar to that of the tail/Z motif of other AGC kinases.
SIGNOR-243409
O43683
Q8NG31
2
binding
up-regulates
0.2
Association of the amino and middle domain of blinkin with the tpr domains in the amino termini of bubr1 and bub1 is essential for bubr1 and bub1 to execute their distinct mitotic functions
SIGNOR-158378
Q9UGL1
O94992
0
relocalization
up-regulates activity
0.2
We previously reported that the tumor suppressor HEXIM1 is a mediator of KDM5B recruitment to its target genes, and HEXIM1 is required for the inhibition of nuclear hormone receptor activity by KDM5B. 
SIGNOR-273439
P31749
P23769
1
phosphorylation
down-regulates
0.524
We show that insulin induces gata2 phosphorylation on serine 401 in a pi-3k/akt-dependent manner. Insulin-dependent phosphorylation of serine 401 impairs gata2 translocation to the nucleus and its dna binding activity
SIGNOR-135614
P45985
P45984
1
phosphorylation
up-regulates
0.729
Mkk4, which activates p38gamma, p38delta, and jnk2 to phosphorylate p53 on ser-33 and cause a transient g(1) arrest. A map kinase kinase kinase (mapkkk), termed ask1, was identified that activated two different subs 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) here we report that mkk4 shows a striking preference for the tyrosine residue (tyr-185), and mkk7 a striking preference for the threonine residue (thr-183) in three sapk1/jnk1 isoforms tested (jnk1 alpha 1, jnk2 alpha 2 and jnk3 alpha 1)
SIGNOR-197998
P11309
P42229
0
transcriptional regulation
up-regulates quantity by expression
0.375
The results of 2 microarray experiments demonstrated that the aberrant activation of STAT proteins by Flt3-ITDs resulted in the up-regulation of several STAT5-responsive genes, such as Pim-1, Pim-2, and members of the SOCS (suppressor of cytokine signaling) protein family. These results are particularly interesting because recent data point to an important role of Pim kinases in the antiapoptosis of hematopoietic cells.
SIGNOR-249621
Q8TEK3
P01106
2
binding
up-regulates activity
0.334
Our data suggest that the c-Myc-dependent transcriptional switch is modulated by DOT1L, as in the presence of DOT1L c-Myc preferentially forms an active complex with p300 rather than a repressive complex containing HDAC1 and DNMT1
SIGNOR-239362
P55347
P14653
2
binding
up-regulates activity
0.613
we observe the formation of a ternary Prep1-Pbx1-HOXB1 complex on a HOXB1-responsive target in vitro. Interaction with Prep1 enhances the ability of the HOXB1-Pbx1 complex to activate transcription in a cooperative fashion from the same target.
SIGNOR-241215