GleghornLab/Signor_processed · Datasets at Hugging Face

IdA stringlengths 6 21	IdB stringlengths 6 21	labels float64 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
P68400	P55087	1	phosphorylation	down-regulates activity	0.416	We found that the stress-induced kinase casein kinase (CK)II phosphorylates the Ser276 immediately preceding the tyrosine motif, increasing AQP4-mu 3A interaction and enhancing AQP4-lysosomal targeting and degradation. AQP4 phosphorylation by CKII may thus provide a mechanism that regulates AQP4 cell surface expression. \| To determine whether Ser276 is an actual CKII substrate, we used GST–AQP4-Cter proteins in which only one out of the three C-terminal CKII consensus sites was sequentially conserved (Ser276, Ser285 and Ser315, respectively). Figure 7B (right panel) shows that the three serine residues, including Ser276, were indeed efficiently phosphorylated by CKII.	SIGNOR-250827
P52306	P01116	1	binding	up-regulates	0.416	Smggds has been previously shown to activate a wide variety of small gtpases, including the ras family members rap1a, rap1b, and k-ras, as well as the rho family members cdc42, rac1, rac2, rhoa, and rhob	SIGNOR-171415
Q9UBS0	P09651	1	phosphorylation	up-regulates activity	0.416	Here, we show that S6K2 binds and phosphorylates hnRNPA1 on novel Ser4/6 sites, increasing its association with BCL-XL and XIAP mRNAs to promote their nuclear export.	SIGNOR-279569
P17252	P41594	1	phosphorylation	up-regulates activity	0.416	Thus, we showed that it is phosphorylation of Ser-839, not Thr-840, that is absolutely required for the unique Ca2+ oscillations produced by mGluR5 activation. The Thr-840 residue is important only in that it is permissive for the PKC-dependent phosphorylation of Ser-839.	SIGNOR-249278
Q9H1B7	P01148	1	transcriptional regulation	up-regulates quantity by expression	0.416	EAP1 encoded a nuclear protein expressed in neurons involved in the inhibitory and facilitatory control of reproduction. EAP1 transactivated genes required for reproductive function, such as GNRH1, and repressed inhibitory genes, such as preproenkephalin. It contained a RING finger domain of the C3HC4 subclass required for this dual transcriptional activity.These results suggest that EAP1 is a transcriptional regulator that, acting within the neuroendocrine brain, contributes to controlling female reproductive function.	SIGNOR-267154
Q9UGU0	P08254	1	transcriptional regulation	up-regulates quantity by expression	0.416	This result indicates that expression of SPBP is sufficient to transactivate a minimal promoter containing a single copy of the SPRE, as well as the full-length stromelysin promoter.	SIGNOR-266223
Q00987	P27695	1	ubiquitination	down-regulates quantity by destabilization	0.416	Once the reaction proceeds beyond the monoubiquitination stage, MDM2 polyubiquitinates APE1 for degradation.	SIGNOR-278555
P19622	P55075	1	transcriptional regulation	down-regulates quantity by repression	0.416	Our results in ES cells suggest that Engrailed inhibits Fgf8 expression in the absence of Pbx1. We identified single Engrailed- and Pbx-binding sites in the Fgf8 intron that inhibit expression of Fgf8 in mouse ES cells, but that together can allow full Fgf8 expression.	SIGNOR-265801
Q13627	Q05193	1	phosphorylation	down-regulates	0.416	Mnb/dyrk1a was shown to phosphorylate dynamin 1 and alter its interactions with several sh3 domain-containing endocytic accessory proteins.Phosphorylation At s795 and s857 was confirmed in full-length dynamin 1, and s857 was subsequently determined to be the major mnb/dyrk1a phosphorylation site in vitro. Phosphorylation at s857 was demonstrated to be the basis for altering the binding of dynamin 1 to amphiphysin 1 and grb 2 by site-directed mutants mimicking phosphorylation.	SIGNOR-127440
Q14164	O43734	1	phosphorylation	up-regulates activity	0.416	IKKi was required for IL-17-induced phosphorylation of Act1 on Ser311, adjacent to a putative TRAF-binding motif. Substitution of the serine at position 311 with alanine impaired the IL-17-mediated Act1-TRAF2-TRAF5 interaction and gene expression. Thus, IKKi is a kinase newly identified as modulating IL-17 signaling through its effect on Act1 phosphorylation and consequent function.	SIGNOR-262883
P60484	Q13882	1	dephosphorylation	down-regulates activity	0.416	PTEN inhibits PTK6 activity and downstream signaling in prostate cancer cells.\|Using an in vitro phosphatase assay, we observed that PTEN was able to dephosphorylate PTK6 at tyrosine residue 342 in a dose dependent manner.	SIGNOR-276975
Q6ZUJ8	P42336	1	binding	up-regulates	0.416	This accumulation of tyrosine-phosphorylated bcap at the membrane with its associated pi3k would then allow for the catalysis of ptd ins p2 to ptd ins p3 and downstream pi3k-dependent signals. Therefore, bcap is an essential activator of the pi3k pathway downstream of tlr signaling, providing a brake to limit potentially pathogenic excessive tlr responses.	SIGNOR-191664
O00206	Q16539	1	phosphorylation	up-regulates activity	0.416	Binding of S100A9 to TLR4 stimulates the phosphorylation of JNK, ERK1/2, and p38 MAPK, which leads to the activation of c-Jun, CREB, and NF-κB. Activation of neutrophils by S100A9 also proceeds via p38 MAPK, JNK, and ERK1/2 phosphorylation.	SIGNOR-263652
P10826	P10827	2	binding	up-regulates	0.416	We report that the retinoic acid receptors (rars), a distinct class of nuclear receptors, are also efficient heterodimer partners for trs	SIGNOR-133234
O15409	P08581	1	transcriptional regulation	down-regulates quantity by repression	0.416	FOXP2 binds directly to the 5' regulatory region of MET, and overexpression of FOXP2 results in transcriptional repression of MET. The expression of MET in restricted human neocortical regions, and its regulation in part by FOXP2, is consistent with genetic evidence for MET contributing to ASD risk.	SIGNOR-269054
P10827	P10826	2	binding	up-regulates	0.416	Ee report that the retinoic acid receptors (rars), a distinct class of nuclear receptors, are also efficient heterodimer partners for trs	SIGNOR-133243
P62837	P50542	1	ubiquitination	down-regulates quantity by destabilization	0.416	Here we report on the identification of the protein-ubiquitin ligases that are responsible for the ubiquitination of the peroxisomal protein import receptor Pex5. It is demonstrated that each of the three RING peroxins Pex2, Pex10, and Pex12 exhibits ubiquitin-protein isopeptide ligase activity. Our results show that Pex2 mediates the Ubc4-dependent polyubiquitination whereas Pex12 facilitates the Pex4-dependent monoubiquitination of Pex5.While polyubiquitinated Pex5 is degraded by the proteasome, monoubiquitinated Pex5 is destined for a new round of the receptor cycle.	SIGNOR-253023
Q13177	P00519	1	phosphorylation	down-regulates	0.415	The interaction of c-abl with the abl interactor protein abi2 is shown to be negatively regulated by phosphorylation of serines 637 and 638. These serines are adjacent to the pxxp motif (ptppkrs637s638sfr) that binds the sh3 domain of abi. phosphorylation of c-abl by pak2 inhibits the interaction between the sh3 domain of abi2 and the pxxp motif of c-abl.	SIGNOR-160215
Q8N1N5	Q13153	1	binding	up-regulates	0.415	We further found that cripak interacted with pak1 through the n-terminal regulatory domain and inhibited pak1 kinase in both in vitro and in vivo assays.	SIGNOR-141467
Q9H1C0	P63096	1	binding	up-regulates activity	0.415	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-256718
O76064	Q9NS91	1	binding	up-regulates	0.415	Rnf8 depletion also significantly reduced the accumulation of rad18 to chromatin fraction after ir	SIGNOR-185593
P01106	O75592	2	transcriptional regulation	down-regulates quantity by repression	0.415	We identified several E3 ligases as strong candidates responsible for AR and MYC protein loss as HECTD4, MYCBP2, and TRIM49. HECTD4 and MYCBP2 target AR and MYC for degradation while TRIM49 appears to promote AR and MYC stability. We have shown that these E3 ligases in turn are directly regulated by MYC. MYC in turn represses the expression of ubiquitin ligases, HECTD4 and MYCBP2 that promote AR and MYC protein degradation, further suppressing MYC and AR in a feed forward loop.	SIGNOR-267145
P00519	O00213	1	phosphorylation	up-regulates	0.415	The c-abl tyrosine kinase phosphorylates the fe65 adaptor protein to stimulate fe65/amyloid precursor protein nuclear signaling. Here, we show that active c-abl stimulates app/fe65-mediated gene transcription and that this effect is mediated by phosphorylation of fe65 on tyrosine 547 within its second ptb domain.	SIGNOR-123476
P53350	Q3KR16	1	phosphorylation	up-regulates	0.415	We reported previously that a guanine nucleotide exchange factor, myogef, localizes to the central spindle, activates rhoa, and is required for cytokinesis. In this study, we have found that plk1 (polo-like kinase 1) can phosphorylate myogef, thereby recruiting myogef to the central spindle as well as enhancing myogef activity toward rhoa. The in vitro kinase assay shows that plk1 can phosphorylate myogef on threonine 574.	SIGNOR-179954
Q6GPH4	Q13490	1	binding	down-regulates	0.415	Immunoprecipitation studies indicate that xaf1 binds to xiap,birc2,birc3.	SIGNOR-156843
P29350	P00533	1	dephosphorylation	down-regulates	0.415	The sh2-domain ptpase shp-1 binds to and dephosphorylates autophosphorylated egfr and may participate in modulation of egfr signaling in epithelial cells. Reduced shp-1 binding to the egfr y1173f mutant resulted in a reduced receptor dephosphorylation by coexpressed shp-1 and less interference with egf-dependent mitogen-activated protein kinase stimulation.	SIGNOR-59965
O00141	Q96J92	1	phosphorylation	up-regulates activity	0.415	In addition, we identified a novel SGK1 phosphorylation site (S1201) in WNK4, and phosphorylation at this site is reduced by Ca(2+)/CaM.	SIGNOR-276421
P00533	Q8IVM0	1	phosphorylation	down-regulates activity	0.415	We also detected tyrosine phosphorylation of Ymer by EGF stimulation as previously reported (Fig. 1A). Furthermore, we verified that EGF receptor-mediated tyrosine phosphorylation of Ymer is inhibited by AG1478, which is known as an EGF receptor tyrosine kinase inhibitor (Fig. 1B). A luciferase reporter assay showed that mutation of tyrosines on Ymer (YmerY217/279/304F) results in loss of the inhibitory activity for NF-kappaB signaling.	SIGNOR-262851
P12931	Q92974	1	phosphorylation	up-regulates activity	0.415	Src activates GEF-H1.	SIGNOR-277478
Q99933	P10415	1	binding	up-regulates activity	0.415	Cloning and functional analysis of BAG-1: A novel Bcl-2-binding protein with anti-cell death activity\|	SIGNOR-254118
Q00987	Q8N6T7	1	ubiquitination	down-regulates quantity	0.415	These results suggest that MDM2 degrades SIRT6 in a proteasome dependent manner.\|USP10 has been shown to deubiquitinate and stabilize p53, a well-known substrate of MDM2, suggesting a mechanism whereby SIRT6 is ubiquitinated and destabilized by MDM2, which could be reversed by USP10 mediated deubiquitination.	SIGNOR-278702
Q7KZI7	Q9NQT8	1	phosphorylation	down-regulates activity	0.415	We report here the identification of GAKIN/KIF13B as a novel in vivo substrate for Par1b and present evidence that GAKIN/KIF13B plays a critical role in axon formation in neurons, which is negatively regulated by Par1b-mediated phosphorylation. Par1b phosphorylates GAKIN/KIF13B at both Ser1381 and Ser1410.	SIGNOR-262956
Q13464	Q14457	1	phosphorylation	up-regulates activity	0.415	Beclin1 is phosphorylated by ROCK1 at T119.	SIGNOR-278198
Q16665	Q9Y4C1	1	transcriptional regulation	up-regulates quantity by expression	0.415	To this end, we confirm that KDM3A, KDM4B, KDM4C, KDM5B, KDM5C, and KDM62 are direct targets of HIF-1a while extent the list of known targets to KDM2A, KDM2B, KDM4D, KDM5A, and KDM6A. The results demonstrated that majority of the KDMs were similarly induced (KDM2A, KDM2B, KDM3A, KDM4B, KDM4C, KDM4D, KDM5A, KDM5B, KDM5C, KDM6B, and KDM7A) or repressed (KDM NO66 and KDM1A) by both HIF-1a and HIF-2a.	SIGNOR-271568
P04150	O43524	1	transcriptional regulation	up-regulates quantity	0.415	We show that FOXO3 is an immediate early glucocorticoid receptor (GR) target, whose transcription is even further enhanced by conditions that mimic metabolic stress.	SIGNOR-255759
Q00535	Q14814	1	phosphorylation	down-regulates activity	0.415	In this case, cdk5 phosphorylates MEF2D on Ser444 suppressing its transcriptional activity.	SIGNOR-279509
P27361	Q05469	1	phosphorylation	up-regulates activity	0.415	Thus, activation of the ERK pathway appears to be able to regulate adipocyte lipolysis by phosphorylating HSL on Ser(600) and increasing the activity of HSL.	SIGNOR-249470
P05129	P41594	1	phosphorylation	up-regulates activity	0.415	Thus, we showed that it is phosphorylation of Ser-839, not Thr-840, that is absolutely required for the unique Ca2+ oscillations produced by mGluR5 activation. The Thr-840 residue is important only in that it is permissive for the PKC-dependent phosphorylation of Ser-839.	SIGNOR-249289
P04629	P35222	1	phosphorylation	up-regulates activity	0.415	EGFR and TRKA effect on WNT3a mediated Topflash induction was abolished by U0126 or expression of dominant negative LRP6-5A mutant (XREF_FIG), demonstrating that both EGFR and TRKA signal via ERK and LRP6 pathway to upregulate WNT and beta-catenin signaling.\|FGFR2, FGFR3, EGFR and TRKA Phosphorylate \u03b2-catenin at Tyr142.	SIGNOR-279240
P53350	Q8NFH5	1	phosphorylation	down-regulates activity	0.415	Collectively, these data show that mitotic hyperphosphorylation of Nup53 by CDK1 and PLK1 contributes to its removal from NPCs.\|The combined mutation of the CDK1 and PLK1 sites to phosphomimetic residues almost completely abolished NPC integration of Nup53, indicating that hyperphosphorylation of Nup53 might be incompatible with its NPC association.	SIGNOR-279252
P00533	O15492	1	phosphorylation	up-regulates	0.415	Phosphorylation on tyr(168) was mediated by the epidermal growth factor receptor (egfr). We show here that endogenous rgs16 is phosphorylated after epidermal growth factor stimulation of mcf-7 cells.	SIGNOR-98267
O00141	P43003	1	phosphorylation	up-regulates activity	0.415	Site‐directed mutagenesis of the SGK1 phosphorylation sites in the Nedd4‐2 protein (S382A,S468ANedd4‐2) and in the EAAT1 protein (T482AEAAT1, T482DEAAT1) significantly blunts the effect of S422DSGK1. Introduction of a negative charge at the SGK phosphorylation site in the EAAT1 protein leads to a strong stimulation of the carrier, whereas replacement with alanine markedly decreases the EAAT1‐mediated current. These observations suggest that SGK1 exerts its effect not only by phosphorylation of Nedd4‐2 but also by phosphorylation of EAAT1.	SIGNOR-263075
Q9H1H9	Q68DK2	1	binding	up-regulates activity	0.415	We show that PtdIns(3)P localizes to the midbody during cytokinesis and recruits a centrosomal protein, FYVE-CENT (ZFYVE26), and its binding partner TTC19, which in turn interacts with CHMP4B, an endosomal sorting complex required for transport (ESCRT)-III subunit implicated in the abscission step of cytokinesis. On the basis of these data and the high-content microscopy described above, we propose that PtdIns(3)P controls the KIF13A-dependent recruitment of FYVE-CENT and TTC19 to the midbody, and that TTC19 is the most downstream effector of the three, possibly controlling the function of CHMP4B.	SIGNOR-265539
Q16539	Q9HBH9	1	phosphorylation	up-regulates	0.415	Erk and p38 phosphorylate mnk1 and mnk2, which stimulates their in vitro kinase activity	SIGNOR-48349
Q00535	Q13315	1	phosphorylation	up-regulates	0.415	Here we show that cdk5 (cyclin-dependent kinase 5), activated by dna damage, directly phosphorylates atm at ser 794 in post-mitotic neurons. Phosphorylation at ser 794 precedes, and is required for, atm autophosphorylation at ser 1981, and activates atm kinase activity	SIGNOR-183454
P07900	P36897	1	binding	up-regulates	0.415	The data in fig. 5 suggest that hsp90 specifically interacts with t?RI And t?RII In vitro and in vivo. Coupled with our data showing that loss of hsp90 function decreases t?R Levels and blocks tgf?-Induced smad2/3 activation and transcription, this result suggests that hsp90 controls tgf? Signaling as an essential component for stabilizing t?Rs.	SIGNOR-179268
O75592	P01106	2	ubiquitination	down-regulates quantity by destabilization	0.415	We identified several E3 ligases as strong candidates responsible for AR and MYC protein loss as HECTD4, MYCBP2, and TRIM49. HECTD4 and MYCBP2 target AR and MYC for degradation while TRIM49 appears to promote AR and MYC stability. We have shown that these E3 ligases in turn are directly regulated by MYC. MYC in turn represses the expression of ubiquitin ligases, HECTD4 and MYCBP2 that promote AR and MYC protein degradation, further suppressing MYC and AR in a feed forward loop.	SIGNOR-267147
O95644	P05231	1	transcriptional regulation	up-regulates quantity by expression	0.415	The calcineurin/nuclear factor of activated T cells (NFAT) signaling pathway has been found to play a role in regulating growth and differentiation in several cell types. However, the functional significance of NFAT in the vasculature is largely unclear. Here we show that NFATc1, NFATc3, and NFATc4 are expressed in human myometrial arteries. \|Chronic inhibition of NFAT significantly reduced IL-6 production in intact myometrial arteries and inhibited cell proliferation in vascular smooth muscle cells cultured from explants from the same arteries.	SIGNOR-251730
P31749	Q15942	1	phosphorylation	down-regulates	0.415	Akt binds and phosphorylates zyxin on serine 142, leading to its association with acinus zyxin is a substrate of caspases, but akt phosphorylation fails to protect its proteolytic degradation	SIGNOR-156122
Q13535	Q9Y253	1	phosphorylation	up-regulates	0.415	Atr-mediated phosphorylation of dna polymerase _ is needed for efficient recovery from uv damage. We show that, after uv irradiation, pol_ becomes phosphorylated at ser601 by the ataxia-telangiectasia mutated and rad3-related (atr) kinase. Atr-dependent phosphorylation of pol_ is necessary to restore normal survival and postreplication repair	SIGNOR-171290
Q15466	P10275	1	binding	down-regulates	0.415	We demonstrated that shp inhibited both ar-lbd and ntd-dependent transactivation, which evidenced for the first time a protein capable of inhibiting a steroid receptor amino-terminal-dependent transactivation. We further characterized the shp mechanism of action by showing that shp reversed ar coactivator-mediated activation	SIGNOR-112589
Q8IYA7	Q7RTU7	1	transcriptional regulation	up-regulates quantity by expression	0.415	MKX is a meniscus-enriched transcription factor. In human meniscus cells, MKX regulates the expression of meniscus marker genes, OA-related genes, and other transcription factors, including Scleraxis (SCX), SRY Box 5 (SOX5), and Runt domain-related transcription factor 2 (RUNX2).	SIGNOR-267213
Q9P1W9	Q13541	1	phosphorylation	up-regulates activity	0.414	Further, PIM2 triggered phosphorylation of AKT and 4EBP1 (XREF_FIG) clearly demonstrating the activation of PI3K pathway.	SIGNOR-279091
Q16539	Q99626	1	phosphorylation	down-regulates quantity by destabilization	0.414	ERK2, p38alpha and GSK-3beta can phosphorylate Cdx2 in vitro and that the 4S motif is required for phosphorylation by GSK-3beta and p38alpha\|Phosphorylation of the homeotic tumor suppressor Cdx2 mediates its ubiquitin-dependent proteasome degradation	SIGNOR-250092
Q92993	P46531	1	acetylation	down-regulates	0.414	This result implies that the residues k2019, k2039, k2044, and k2068 of notch1-ic are the major targets of the acetyltransferase activity of tip60.	SIGNOR-156923
P12931	Q9UJM3	1	phosphorylation	down-regulates activity	0.414	Prior phosphorylation of Y395 dramatically increases the rate of EGFR phosphorylation of Mig6 on Y394 in vitro, and suppression of Src activity pharmacologically or by shRNA decreased phosphorylation of Mig6 on this site in cells, impairing EGFR binding and inhibition.\|We further found that Mig6 inhibition of EGFR is modulated by Src via phosphorylation of Mig6 on Y395.	SIGNOR-279116
Q6K0P9	Q00987	1	binding	down-regulates quantity by destabilization	0.414	Here, we show that IFIXalpha1 downregulates HDM2, a principal negative regulator of p53, at the posttranslational level. IFIXalpha1 destabilizes HDM2 protein and promotes its ubiquitination. The E3 ligase activity of HDM2 appears to be required for this IFIXalpha1 effect. Importantly, HDM2 downregulation is required for the IFIXalpha1-mediated increase of p53 protein levels, transcriptional activity, and nuclear localization, suggesting that IFIXalpha1 positively regulates p53 by acting as a negative regulator of HDM2.	SIGNOR-268493
Q13464	Q9NRY4	1	phosphorylation	down-regulates activity	0.414	these results indicate that Rho-kinase can phosphorylate p190A RhoGAP at Ser1150 in COS7 cells. Similarly, the immunoblot analysis, through the use of the anti-p190A RhoGAP-pT1226 and -pS1236 antibodies, revealed that Rho-kinase can phosphorylate p190A RhoGAP at Thr1226 and Ser1236 in COS7 cells	SIGNOR-276177
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
O15264	P16949	1	phosphorylation	down-regulates	0.414	Serine 25 of oncoprotein 18 is a major cytosolic target for the mitogen-activated protein kinase.	SIGNOR-36362
Q13239	P29317	1	binding	down-regulates quantity by destabilization	0.414	These data are consistent with a model where SLAP induces Ephrin-independent EPHA2 degradation. \| This activity is independent from CBL but requires SLAP SH3 interaction with the ubiquitination factor UBE4A and SLAP SH2 interaction with pTyr594-EPHA2.	SIGNOR-262964
P06241	O14522	1	phosphorylation	down-regulates activity	0.414	Synapse formation by PTPRT was inhibited by phosphorylation of tyrosine 912 within the membrane-proximal catalytic domain of PTPRT by Fyn. This tyrosine phosphorylation reduced phosphatase activity of PTPRT	SIGNOR-275543
P19784	Q9UNN4	1	phosphorylation	up-regulates activity	0.414	ALF was able to stabilize the binding of TBP to DNA, but it could not stabilize TBP mutants A184E, N189E, E191R, and R205E nor could it facilitate binding of the TBP-like factor TRF2/TLF to a consensus TATA element. However, phosphorylation of ALF with casein kinase II resulted in the partial restoration of complex formation using mutant TBPs. \| Because the residues involved (Ser-280, Ser-281, Ser-316, and Ser-321) are conserved in ALF (Ser-356, Ser-357, Ser-418, and Ser-423), we tested whether its activity might also be affected by this modification. We first showed that ALF and TFIIAα/β polypeptides incubated with casein kinase II and [γ-32P]ATP could be labeled.	SIGNOR-250993
Q8N5S9	Q14012	1	phosphorylation	up-regulates activity	0.414	Human calcium-calmodulin dependent protein kinase I: cDNA cloning, domain structure and activation by phosphorylation at threonine-177 by calcium-calmodulin dependent protein kinase I kinase.	SIGNOR-250717
P51812	P19634	1	phosphorylation	up-regulates activity	0.414	In pressured arteries, RSK2 dependent activation of NHE-1 was associated with increased intracellular Ca 2+ transients, which would be expected to increase MLCK activity, thereby contributing to basal tone and myogenic responses.\|Together, these data indicate that Ser 703 in NHE-1 is phosphorylated by RSK2, that RSK2 is associated with NHE-1, and that the time course of NHE-1 phosphorylation in response to intraluminal pressure is fast enough for this phosphorylation event to contribute to myogenic vasoconstriction.	SIGNOR-280119
O14757	Q9Y294	1	phosphorylation	up-regulates activity	0.414	Chk1 activated by ataxia telangiectasia mutated (ATM) kinase on DNA breaks in G1 promotes NHEJ through direct phosphorylation of ASF1A at Ser-166. ASF1A phosphorylated at Ser-166 interacts with the repair protein MDC1 and thus enhances MDC1's interaction with ATM and the stable localization of ATM at DNA breaks.	SIGNOR-277620
P12931	Q9NZQ3	1	phosphorylation	up-regulates activity	0.414	These results indicate that phosphorylation of SPIN90 by Src is essential for its synaptic targeting.	SIGNOR-279387
O43561	P42336	1	binding	up-regulates activity	0.414	By substituting these tyrosine residues in LAT with phenylalanine and by utilizing phosphorylated peptides derived from these sites, we mapped the tyrosine residues in LAT required for the direct interaction and activation of Vav, p85/p110alpha and phospholipase Cgamma1 (PLCgamma1). Our results indicate that Tyr(226) and Tyr(191) are required for Vav binding, whereas Tyr(171) and Tyr(132) are necessary for association and activation of phosphoinositide 3-kinase activity and PLCgamma1 respectively.	SIGNOR-246065
P52306	P61224	1	binding	up-regulates	0.414	Smggds has been previously shown to activate a wide variety of small gtpases, including the ras family members rap1a, rap1b, and k-ras, as well as the rho family members cdc42, rac1, rac2, rhoa, and rhob	SIGNOR-171552
Q9Y2U5	Q02750	1	phosphorylation	up-regulates	0.414	Both mekk2 and mekk3 are able to activate the jun kinase pathway in vivo. However, following routine immunoprecipitation in triton x-100, mekk2 but not mekk3 is able to effectively phosphorylate both sek-1 and mek-1 and to undergo autophosphorylation	SIGNOR-107692
P17612	Q13224	1	phosphorylation	up-regulates activity	0.414	Here we identify serine residue 1166 (Ser1166) in the carboxy-terminal tail of the NMDAR subunit GluN2B to be a direct molecular and functional target of PKA phosphorylation critical to NMDAR-dependent Ca(2+) permeation and Ca(2+) signaling in spines.	SIGNOR-276616
Q7Z2W4	O95453	1	binding	up-regulates activity	0.414	We provide evidence indicating that ZAP selectively recruits cellular poly(A)-specific ribonuclease (PARN) to shorten the poly(A) tail of target viral mRNA and recruits the RNA exosome to degrade the RNA body from the 3′ end.	SIGNOR-261296
P31751	Q9GZV1	1	phosphorylation	up-regulates	0.414	In vitro and in vivo studies confirmed that akt phosphorylates ankrd2 at ser-99. moreover, the forced expression of a phosphorylation-defective mutant form of ankrd2 in c2c12 myoblasts promoted a faster differentiation program, implicating akt-dependent phosphorylation at ser-99 in the negative regulation of myogenesis in response to stress conditions.	SIGNOR-236978
P42574	Q4V328	1	cleavage	up-regulates activity	0.414	These results suggest that the region of GRASP‐1 downstream of the Caspase‐3‐cleavage site is capable of activating the JNK signaling pathway by enhancing the phosphorylation of JNK. these results suggest that full length GRASP‐1 does not enhance JNK pathway activity, possibly due to the inhibitory effect of the N‐terminal fragment on the C‐terminal fragment. In contrast, Caspase‐3 cleavage of GRASP‐1 releases the C‐terminal fragment, which in turn activates JNK signaling by serving as a scaffold protein.	SIGNOR-260641
Q9Y243	O15111	1	phosphorylation	up-regulates	0.414	Although there are likely to be multiple levels of crosstalk between the pi3k-akt and nf-kb pathways, one mechanism has been attributed to direct phosphorylation of the amino acid residue t23 on ikb kinase alfa (ikkalfa) by akt, thereby leading to activation of this kinase upstream of nf-kb akt mediates ikkalpha phosphorylation at threonine 23 akt transiently associates in vivo with ikk and induces ikk activation. Akt mediates ikkalfa phosphorylation at threonine 23.Akt phosphorylates ikkalpha on t23, and this phosphorylation event is a prerequisite for the phosphorylation of p65 at s534 by ikkalpha and beta	SIGNOR-187062
O00254	P30679	1	binding	up-regulates activity	0.414	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-257360
Q7L7X3	Q7KZI7	1	phosphorylation	up-regulates activity	0.414	MARK family kinases can be activated by phosphorylation of a conserved threonine (Thr-208 in MARK2), and inactivated by phosphorylation of a serine (Ser-212), both in the activation loop of the catalytic domain. Activation is achieved by the kinases MARKK/TAO1 or LKB1, although the inactivating kinase was unknown. We show here that GSK3beta serves the role of the inhibitory kinase.	SIGNOR-276164
Q8TDV5	P63092	1	binding	up-regulates activity	0.414	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-256768
Q5XUX0	P24385	1	binding	down-regulates quantity by destabilization	0.413	FBXO31 serves as the substrate-recognition component of the SKP/Cullin/F-box protein class of E3 ubiquitin ligases and has been shown to direct degradation of pivotal cell-cycle regulatory proteins including cyclin D1 and the p53 antagonist MDM2.	SIGNOR-277379
O75116	Q96A00	1	phosphorylation	up-regulates activity	0.413	A major kinase for GPCR‐induced CPI‐17 phosphorylation is PKC which is activated by the PLCbeta‐produced signaling messenger diacylglycerol (DAG). It phosphorylates CPI‐17 at Thr38 residue that directly docks at the active site of MLCP, thereby inhibiting its activity and promoting an increase of phosphorylation of myosin and of other MLCP.\| CPI-17 can be also directly phosphorylated at Thr38 residue by MYPT1-associated kinase [222], by PAK, which is downstream of Rac and/or Cdc42 cascade [223], by Rho-associated coiled-coil kinase (ROCK) [224] and by PKN [225].	SIGNOR-96696
Q5S007	P30048	1	phosphorylation	down-regulates activity	0.413	Here, we show that LRRK2 interacts with human peroxiredoxin 3 (PRDX3), a mitochondrial member of the antioxidant family of thioredoxin (Trx) peroxidases. Importantly, mutations in the LRRK2 kinase domain significantly increased phosphorylation of PRDX3 compared to wild-type. The increase in PRDX3 phosphorylation was associated with decreased peroxidase activity and increased death in LRRK2-expressing but not in LRRK2-depleted or vector-transfected neuronal cells.	SIGNOR-262891
Q92630	Q9UHD2	1	phosphorylation	down-regulates quantity by destabilization	0.413	We further found that DYRK2 phosphorylated Ser527 of TBK1, which is essential for the recruitment of NLRP4 and for the E3 ubiquitin ligase DTX4 to degrade TBK1.	SIGNOR-276939
P25105	O95837	1	binding	up-regulates activity	0.413	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-257436
Q96J02	Q16621	1	ubiquitination	down-regulates activity	0.413	Itch regulates p45/NF-E2 in vivo by Lys63-linked ubiquitination\| Interestingly, Itch suppressed the transactivation activity of p45/NF-E2 by adding a Lys63-linked polyubiquitin chain. Confocal microscopy revealed that ubiquitinated p45/NF-E2 became localized in the cytoplasm when Itch was over-expressed. Thus, Itch-mediated ubiquitination of p45/NF-E2 does not target the protein for proteasomal degradation, but instead retains p45/NF-E2 in the cytoplasm, where it cannot function as a transactivator.	SIGNOR-275553
P17252	P35222	1	phosphorylation	down-regulates	0.413	As shown in Fig. 1 B, PKCalpha readily phosphorylated Ser33 and Ser37 / Thr41 on full-length beta-catenin (beta-catenin 1 - 781) and CTD deletion mutant (beta-catenin 1-682).\|To examine the effect of the armadillo repeats 1-5 on PKCalpha mediated beta-catenin degradation, DNA constructs expressing beta-catenin 1 - 781 and beta-catenin deletion mutants (beta-catenin 1-422 and beta-catenin 1-138) were transfected into HEK293 cells, followed by treatment with increasing concentrations of A23187 and CGK062, which are known activators of PKCalpha.	SIGNOR-278492
P49354	P01112	1	null	up-regulates activity	0.413	Major investments have been made to target Ras through indirect routes. Inhibition of farnesyl transferase to block Ras maturation has failed in large clinical trials.	SIGNOR-242568
Q96RR4	Q14012	1	phosphorylation	up-regulates activity	0.413	Human calcium-calmodulin dependent protein kinase I: cDNA cloning, domain structure and activation by phosphorylation at threonine-177 by calcium-calmodulin dependent protein kinase I kinase.	SIGNOR-250716
Q92769	P33076	1	deacetylation	down-regulates quantity by repression	0.413	We report that CIITA and histone deacetylase 2 (HDAC2) interact in smooth muscle cells and macrophages as assayed by co-immunoprecipitations. HDAC2 deacetylates CIITA whereas both the HDAC inhibitor trichostatin A (TSA) and over-expression of HDAC2 interfering RNA increase CIITA acetylation. HDAC2 down-regulates CIITA recruitment to target promoters as evidenced by chromatin immunoprecipitation assays, and suppresses MHC II activation and collagen repression mediated by CIITA in luciferase reporter assays.	SIGNOR-254231
Q13547	P36952	1	transcriptional regulation	down-regulates quantity by repression	0.413	We found that maspin is selectively upregulated in IFIXα-expressing cells and involved in anti-invasive activity of IFIXα. We also present evidence indicating that IFIXα downregulates histone deacetylase 1 (HDAC1), which is possibly involved in the silencing of the maspin gene in human breast cancer cells. To confirm these results, we performed a luciferase assay using a maspin-promoter-luciferase plasmid. The results showed that HDAC1 overexpression suppressed the activity of the maspin promoter (Figure 3C). Therefore, our results suggest that IFIXα enhances maspin expression through the downregulation of HDAC1.	SIGNOR-268494
P43378	P46459	1	dephosphorylation	down-regulates	0.413	Our results suggest that the molecular mechanism by which ptp-meg2 promotes secretory vesicle fusion involves the local release of nsf from a tyrosine-phosphorylated, inactive state.	SIGNOR-128348
P46100	O96006	1	binding	up-regulates activity	0.413	XNP/dATRX physically interacts with DREF. our results show that DREF is required for the proper expression of pnr and that XNP/dATRX binds to DREF at the DRE sites, resulting in the repression of pnr gene expression.	SIGNOR-239729
P28482	P19484	1	phosphorylation	down-regulates activity	0.413	Evidence for ERK2-mediated TFEB phosphorylation came from ERK2-TFEB coimmuno-precipitation (fig. S12C) in normal but not in starved medium and from a peptide-based kinase assay showing that mutation of Ser142 to alanine abolished ERK2-mediated phosphorylation (	SIGNOR-248279
P50613	P03372	1	phosphorylation	up-regulates	0.413	Activation of estrogen receptor alpha by s118 phosphorylation involves a ligand-dependent interaction with tfiih and participation of cdk7.	SIGNOR-81170
P36873	P05198	1	dephosphorylation	up-regulates activity	0.412	Dephosphorylation of eIF2Î± is central to ISR signal termination to restore protein synthesis and normal cell functioning. It is mediated by protein phosphatase 1 (PP1) complex that recruits a PP1 catalytic subunit (PP1c) and one of the two regulatory subunits. In mammals, phosphatase activity is regulated by either PPP1R15A (also known as growth arrest and DNA damageâ€inducible protein, GADD34), which is induced as part of the ISR. the GADD34â€“PP1 complex acts as an important negative feedback loop to restore protein synthesis once the ER stress has been resolved, and as such aids in cell survival	SIGNOR-254119
O75665	Q13099	1	binding	up-regulates activity	0.412	Ofd1 acts at the distal centriole to build distal appendages, recruit Ift88, and stabilize centriolar microtubules at a defined length.	SIGNOR-251973
P37802	P60709	1	binding	down-regulates activity	0.412	Taken together, our data propose a novel, oncogene-tumor suppressor interplay, where oncogenic PFTK1 confers HCC cell motility through inactivating the actin-binding motile suppressing function of TAGLN2 via phosphorylation.	SIGNOR-265104
O94952	Q9Y6B2	1	binding	down-regulates quantity by destabilization	0.412	SCFFBXO21 ubiquitylates and thereby targets EID1 for degradation.We have now applied this approach to an uncharacterized human F-box protein, FBXO21, which serves as the substrate-recognition subunit of a SKP1-CUL1-F-box protein (SCF)-type E3, thereby identifying EID1 (EP300-interacting inhibitor of differentiation 1) as a candidate substrate.Over-expression of FBXO21 resulted in the down-regulation of EID1, whereas disruption of the FBXO21 gene with the CRISPR/Cas9 system stabilized EID1 and led to its accumulation in both the cytoplasm and nucleus. An in vitro ubiquitylation assay showed that EID1 is a direct substrate of SCF(FBXO)	SIGNOR-272429
P24385	O15379	1	binding	up-regulates	0.412	Collectively, these studies suggest an important role of cyclin d1 in regulation of ppargamma-mediated adipocyte differentiation through recruitment of hdacs to regulate ppar response element local chromatin structure and ppargamma function.	SIGNOR-134056
P28482	P10828	1	phosphorylation	down-regulates activity	0.412	We concluded that serine 142 of the tr dbd is the likely site of phosphorylation by t(4)-activated mapk and that the docking site on tr for activated mapk includes residues 128-133 (kgffrr), a basic amino acid-enriched motif novel for mapk substrates. Tr mutations in the proposed mapk docking domain and at residue 142 modulated t(4)-conditioned shedding of co-repressor and recruitment of co-activator proteins by the receptor, and they altered transcriptional activity of tr in a thyroid hormone response element-luciferase reporter assay.	SIGNOR-102216
P54829	P42262	1	dephosphorylation	down-regulates activity	0.412	One study showed that stimulation of the metabotrophic glutamate receptor mGluR5 leads to a STEP mediated tyrosine dephosphorylation of GluA2 and internalization of GluA1 and GluA2, although the tyrosine residue on GluA2 that is dephosphorylated by STEP remains unidentified.	SIGNOR-277040

P68400

P55087

1

phosphorylation

down-regulates activity

0.416

We found that the stress-induced kinase casein kinase (CK)II phosphorylates the Ser276 immediately preceding the tyrosine motif, increasing AQP4-mu 3A interaction and enhancing AQP4-lysosomal targeting and degradation. AQP4 phosphorylation by CKII may thus provide a mechanism that regulates AQP4 cell surface expression. | To determine whether Ser276 is an actual CKII substrate, we used GST–AQP4-Cter proteins in which only one out of the three C-terminal CKII consensus sites was sequentially conserved (Ser276, Ser285 and Ser315, respectively). Figure 7B (right panel) shows that the three serine residues, including Ser276, were indeed efficiently phosphorylated by CKII.

SIGNOR-250827

P52306

P01116

1

binding

up-regulates

0.416

Smggds has been previously shown to activate a wide variety of small gtpases, including the ras family members rap1a, rap1b, and k-ras, as well as the rho family members cdc42, rac1, rac2, rhoa, and rhob

SIGNOR-171415

Q9UBS0

P09651

1

phosphorylation

up-regulates activity

0.416

Here, we show that S6K2 binds and phosphorylates hnRNPA1 on novel Ser4/6 sites, increasing its association with BCL-XL and XIAP mRNAs to promote their nuclear export.

SIGNOR-279569

P17252

P41594

1

phosphorylation

up-regulates activity

0.416

Thus, we showed that it is phosphorylation of Ser-839, not Thr-840, that is absolutely required for the unique Ca2+ oscillations produced by mGluR5 activation. The Thr-840 residue is important only in that it is permissive for the PKC-dependent phosphorylation of Ser-839.

SIGNOR-249278

Q9H1B7

P01148

1

transcriptional regulation

up-regulates quantity by expression

0.416

EAP1 encoded a nuclear protein expressed in neurons involved in the inhibitory and facilitatory control of reproduction. EAP1 transactivated genes required for reproductive function, such as GNRH1, and repressed inhibitory genes, such as preproenkephalin. It contained a RING finger domain of the C3HC4 subclass required for this dual transcriptional activity.These results suggest that EAP1 is a transcriptional regulator that, acting within the neuroendocrine brain, contributes to controlling female reproductive function.

SIGNOR-267154

Q9UGU0

P08254

1

transcriptional regulation

up-regulates quantity by expression

0.416

This result indicates that expression of SPBP is sufficient to transactivate a minimal promoter containing a single copy of the SPRE, as well as the full-length stromelysin promoter.

SIGNOR-266223

Q00987

P27695

1

ubiquitination

down-regulates quantity by destabilization

0.416

Once the reaction proceeds beyond the monoubiquitination stage, MDM2 polyubiquitinates APE1 for degradation.

SIGNOR-278555

P19622

P55075

1

transcriptional regulation

down-regulates quantity by repression

0.416

Our results in ES cells suggest that Engrailed inhibits Fgf8 expression in the absence of Pbx1. We identified single Engrailed- and Pbx-binding sites in the Fgf8 intron that inhibit expression of Fgf8 in mouse ES cells, but that together can allow full Fgf8 expression.

SIGNOR-265801

Q13627

Q05193

1

phosphorylation

down-regulates

0.416

Mnb/dyrk1a was shown to phosphorylate dynamin 1 and alter its interactions with several sh3 domain-containing endocytic accessory proteins.Phosphorylation At s795 and s857 was confirmed in full-length dynamin 1, and s857 was subsequently determined to be the major mnb/dyrk1a phosphorylation site in vitro. Phosphorylation at s857 was demonstrated to be the basis for altering the binding of dynamin 1 to amphiphysin 1 and grb 2 by site-directed mutants mimicking phosphorylation.

SIGNOR-127440

Q14164

O43734

1

phosphorylation

up-regulates activity

0.416

IKKi was required for IL-17-induced phosphorylation of Act1 on Ser311, adjacent to a putative TRAF-binding motif. Substitution of the serine at position 311 with alanine impaired the IL-17-mediated Act1-TRAF2-TRAF5 interaction and gene expression. Thus, IKKi is a kinase newly identified as modulating IL-17 signaling through its effect on Act1 phosphorylation and consequent function.

SIGNOR-262883

P60484

Q13882

1

dephosphorylation

down-regulates activity

0.416

PTEN inhibits PTK6 activity and downstream signaling in prostate cancer cells.|Using an in vitro phosphatase assay, we observed that PTEN was able to dephosphorylate PTK6 at tyrosine residue 342 in a dose dependent manner.

SIGNOR-276975

Q6ZUJ8

P42336

1

binding

up-regulates

0.416

This accumulation of tyrosine-phosphorylated bcap at the membrane with its associated pi3k would then allow for the catalysis of ptd ins p2 to ptd ins p3 and downstream pi3k-dependent signals. Therefore, bcap is an essential activator of the pi3k pathway downstream of tlr signaling, providing a brake to limit potentially pathogenic excessive tlr responses.

SIGNOR-191664

O00206

Q16539

1

phosphorylation

up-regulates activity

0.416

Binding of S100A9 to TLR4 stimulates the phosphorylation of JNK, ERK1/2, and p38 MAPK, which leads to the activation of c-Jun, CREB, and NF-κB. Activation of neutrophils by S100A9 also proceeds via p38 MAPK, JNK, and ERK1/2 phosphorylation.

SIGNOR-263652

P10826

P10827

2

binding

up-regulates

0.416

We report that the retinoic acid receptors (rars), a distinct class of nuclear receptors, are also efficient heterodimer partners for trs

SIGNOR-133234

O15409

P08581

1

transcriptional regulation

down-regulates quantity by repression

0.416

FOXP2 binds directly to the 5' regulatory region of MET, and overexpression of FOXP2 results in transcriptional repression of MET. The expression of MET in restricted human neocortical regions, and its regulation in part by FOXP2, is consistent with genetic evidence for MET contributing to ASD risk.

SIGNOR-269054

P10827

P10826

2

binding

up-regulates

0.416

Ee report that the retinoic acid receptors (rars), a distinct class of nuclear receptors, are also efficient heterodimer partners for trs

SIGNOR-133243

P62837

P50542

1

ubiquitination

down-regulates quantity by destabilization

0.416

Here we report on the identification of the protein-ubiquitin ligases that are responsible for the ubiquitination of the peroxisomal protein import receptor Pex5. It is demonstrated that each of the three RING peroxins Pex2, Pex10, and Pex12 exhibits ubiquitin-protein isopeptide ligase activity. Our results show that Pex2 mediates the Ubc4-dependent polyubiquitination whereas Pex12 facilitates the Pex4-dependent monoubiquitination of Pex5.While polyubiquitinated Pex5 is degraded by the proteasome, monoubiquitinated Pex5 is destined for a new round of the receptor cycle.

SIGNOR-253023

Q13177

P00519

1

phosphorylation

down-regulates

0.415

The interaction of c-abl with the abl interactor protein abi2 is shown to be negatively regulated by phosphorylation of serines 637 and 638. These serines are adjacent to the pxxp motif (ptppkrs637s638sfr) that binds the sh3 domain of abi. phosphorylation of c-abl by pak2 inhibits the interaction between the sh3 domain of abi2 and the pxxp motif of c-abl.

SIGNOR-160215

Q8N1N5

Q13153

1

binding

up-regulates

0.415

We further found that cripak interacted with pak1 through the n-terminal regulatory domain and inhibited pak1 kinase in both in vitro and in vivo assays.

SIGNOR-141467

Q9H1C0

P63096

1

binding

up-regulates activity

0.415

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-256718

O76064

Q9NS91

1

binding

up-regulates

0.415

Rnf8 depletion also significantly reduced the accumulation of rad18 to chromatin fraction after ir

SIGNOR-185593

P01106

O75592

2

transcriptional regulation

down-regulates quantity by repression

0.415

We identified several E3 ligases as strong candidates responsible for AR and MYC protein loss as HECTD4, MYCBP2, and TRIM49. HECTD4 and MYCBP2 target AR and MYC for degradation while TRIM49 appears to promote AR and MYC stability. We have shown that these E3 ligases in turn are directly regulated by MYC. MYC in turn represses the expression of ubiquitin ligases, HECTD4 and MYCBP2 that promote AR and MYC protein degradation, further suppressing MYC and AR in a feed forward loop.

SIGNOR-267145

P00519

O00213

1

phosphorylation

up-regulates

0.415

The c-abl tyrosine kinase phosphorylates the fe65 adaptor protein to stimulate fe65/amyloid precursor protein nuclear signaling. Here, we show that active c-abl stimulates app/fe65-mediated gene transcription and that this effect is mediated by phosphorylation of fe65 on tyrosine 547 within its second ptb domain.

SIGNOR-123476

P53350

Q3KR16

1

phosphorylation

up-regulates

0.415

We reported previously that a guanine nucleotide exchange factor, myogef, localizes to the central spindle, activates rhoa, and is required for cytokinesis. In this study, we have found that plk1 (polo-like kinase 1) can phosphorylate myogef, thereby recruiting myogef to the central spindle as well as enhancing myogef activity toward rhoa. The in vitro kinase assay shows that plk1 can phosphorylate myogef on threonine 574.

SIGNOR-179954

Q6GPH4

Q13490

1

binding

down-regulates

0.415

Immunoprecipitation studies indicate that xaf1 binds to xiap,birc2,birc3.

SIGNOR-156843

P29350

P00533

1

dephosphorylation

down-regulates

0.415

The sh2-domain ptpase shp-1 binds to and dephosphorylates autophosphorylated egfr and may participate in modulation of egfr signaling in epithelial cells. Reduced shp-1 binding to the egfr y1173f mutant resulted in a reduced receptor dephosphorylation by coexpressed shp-1 and less interference with egf-dependent mitogen-activated protein kinase stimulation.

SIGNOR-59965

O00141

Q96J92

1

phosphorylation

up-regulates activity

0.415

In addition, we identified a novel SGK1 phosphorylation site (S1201) in WNK4, and phosphorylation at this site is reduced by Ca(2+)/CaM.

SIGNOR-276421

P00533

Q8IVM0

1

phosphorylation

down-regulates activity

0.415

We also detected tyrosine phosphorylation of Ymer by EGF stimulation as previously reported (Fig. 1A). Furthermore, we verified that EGF receptor-mediated tyrosine phosphorylation of Ymer is inhibited by AG1478, which is known as an EGF receptor tyrosine kinase inhibitor (Fig. 1B). A luciferase reporter assay showed that mutation of tyrosines on Ymer (YmerY217/279/304F) results in loss of the inhibitory activity for NF-kappaB signaling.

SIGNOR-262851

P12931

Q92974

1

phosphorylation

up-regulates activity

0.415

Src activates GEF-H1.

SIGNOR-277478

Q99933

P10415

1

binding

up-regulates activity

0.415

Cloning and functional analysis of BAG-1: A novel Bcl-2-binding protein with anti-cell death activity|

SIGNOR-254118

Q00987

Q8N6T7

1

ubiquitination

down-regulates quantity

0.415

These results suggest that MDM2 degrades SIRT6 in a proteasome dependent manner.|USP10 has been shown to deubiquitinate and stabilize p53, a well-known substrate of MDM2, suggesting a mechanism whereby SIRT6 is ubiquitinated and destabilized by MDM2, which could be reversed by USP10 mediated deubiquitination.

SIGNOR-278702

Q7KZI7

Q9NQT8

1

phosphorylation

down-regulates activity

0.415

We report here the identification of GAKIN/KIF13B as a novel in vivo substrate for Par1b and present evidence that GAKIN/KIF13B plays a critical role in axon formation in neurons, which is negatively regulated by Par1b-mediated phosphorylation. Par1b phosphorylates GAKIN/KIF13B at both Ser1381 and Ser1410.

SIGNOR-262956

Q13464

Q14457

1

phosphorylation

up-regulates activity

0.415

Beclin1 is phosphorylated by ROCK1 at T119.

SIGNOR-278198

Q16665

Q9Y4C1

1

transcriptional regulation

up-regulates quantity by expression

0.415

To this end, we confirm that KDM3A, KDM4B, KDM4C, KDM5B, KDM5C, and KDM62 are direct targets of HIF-1a while extent the list of known targets to KDM2A, KDM2B, KDM4D, KDM5A, and KDM6A. The results demonstrated that majority of the KDMs were similarly induced (KDM2A, KDM2B, KDM3A, KDM4B, KDM4C, KDM4D, KDM5A, KDM5B, KDM5C, KDM6B, and KDM7A) or repressed (KDM NO66 and KDM1A) by both HIF-1a and HIF-2a.

SIGNOR-271568

P04150

O43524

1

transcriptional regulation

up-regulates quantity

0.415

We show that FOXO3 is an immediate early glucocorticoid receptor (GR) target, whose transcription is even further enhanced by conditions that mimic metabolic stress.

SIGNOR-255759

Q00535

Q14814

1

phosphorylation

down-regulates activity

0.415

In this case, cdk5 phosphorylates MEF2D on Ser444 suppressing its transcriptional activity.

SIGNOR-279509

P27361

Q05469

1

phosphorylation

up-regulates activity

0.415

Thus, activation of the ERK pathway appears to be able to regulate adipocyte lipolysis by phosphorylating HSL on Ser(600) and increasing the activity of HSL.

SIGNOR-249470

P05129

P41594

1

phosphorylation

up-regulates activity

0.415

Thus, we showed that it is phosphorylation of Ser-839, not Thr-840, that is absolutely required for the unique Ca2+ oscillations produced by mGluR5 activation. The Thr-840 residue is important only in that it is permissive for the PKC-dependent phosphorylation of Ser-839.

SIGNOR-249289

P04629

P35222

1

phosphorylation

up-regulates activity

0.415

EGFR and TRKA effect on WNT3a mediated Topflash induction was abolished by U0126 or expression of dominant negative LRP6-5A mutant (XREF_FIG), demonstrating that both EGFR and TRKA signal via ERK and LRP6 pathway to upregulate WNT and beta-catenin signaling.|FGFR2, FGFR3, EGFR and TRKA Phosphorylate \u03b2-catenin at Tyr142.

SIGNOR-279240

P53350

Q8NFH5

1

phosphorylation

down-regulates activity

0.415

Collectively, these data show that mitotic hyperphosphorylation of Nup53 by CDK1 and PLK1 contributes to its removal from NPCs.|The combined mutation of the CDK1 and PLK1 sites to phosphomimetic residues almost completely abolished NPC integration of Nup53, indicating that hyperphosphorylation of Nup53 might be incompatible with its NPC association.

SIGNOR-279252

P00533

O15492

1

phosphorylation

up-regulates

0.415

Phosphorylation on tyr(168) was mediated by the epidermal growth factor receptor (egfr). We show here that endogenous rgs16 is phosphorylated after epidermal growth factor stimulation of mcf-7 cells.

SIGNOR-98267

O00141

P43003

1

phosphorylation

up-regulates activity

0.415

Site‐directed mutagenesis of the SGK1 phosphorylation sites in the Nedd4‐2 protein (S382A,S468ANedd4‐2) and in the EAAT1 protein (T482AEAAT1, T482DEAAT1) significantly blunts the effect of S422DSGK1. Introduction of a negative charge at the SGK phosphorylation site in the EAAT1 protein leads to a strong stimulation of the carrier, whereas replacement with alanine markedly decreases the EAAT1‐mediated current. These observations suggest that SGK1 exerts its effect not only by phosphorylation of Nedd4‐2 but also by phosphorylation of EAAT1.

SIGNOR-263075

Q9H1H9

Q68DK2

1

binding

up-regulates activity

0.415

We show that PtdIns(3)P localizes to the midbody during cytokinesis and recruits a centrosomal protein, FYVE-CENT (ZFYVE26), and its binding partner TTC19, which in turn interacts with CHMP4B, an endosomal sorting complex required for transport (ESCRT)-III subunit implicated in the abscission step of cytokinesis. On the basis of these data and the high-content microscopy described above, we propose that PtdIns(3)P controls the KIF13A-dependent recruitment of FYVE-CENT and TTC19 to the midbody, and that TTC19 is the most downstream effector of the three, possibly controlling the function of CHMP4B.

SIGNOR-265539

Q16539

Q9HBH9

1

phosphorylation

up-regulates

0.415

Erk and p38 phosphorylate mnk1 and mnk2, which stimulates their in vitro kinase activity

SIGNOR-48349

Q00535

Q13315

1

phosphorylation

up-regulates

0.415

Here we show that cdk5 (cyclin-dependent kinase 5), activated by dna damage, directly phosphorylates atm at ser 794 in post-mitotic neurons. Phosphorylation at ser 794 precedes, and is required for, atm autophosphorylation at ser 1981, and activates atm kinase activity

SIGNOR-183454

P07900

P36897

1

binding

up-regulates

0.415

The data in fig. 5 suggest that hsp90 specifically interacts with t?RI And t?RII In vitro and in vivo. Coupled with our data showing that loss of hsp90 function decreases t?R Levels and blocks tgf?-Induced smad2/3 activation and transcription, this result suggests that hsp90 controls tgf? Signaling as an essential component for stabilizing t?Rs.

SIGNOR-179268

O75592

P01106

2

ubiquitination

down-regulates quantity by destabilization

0.415

We identified several E3 ligases as strong candidates responsible for AR and MYC protein loss as HECTD4, MYCBP2, and TRIM49. HECTD4 and MYCBP2 target AR and MYC for degradation while TRIM49 appears to promote AR and MYC stability. We have shown that these E3 ligases in turn are directly regulated by MYC. MYC in turn represses the expression of ubiquitin ligases, HECTD4 and MYCBP2 that promote AR and MYC protein degradation, further suppressing MYC and AR in a feed forward loop.

SIGNOR-267147

O95644

P05231

1

transcriptional regulation

up-regulates quantity by expression

0.415

The calcineurin/nuclear factor of activated T cells (NFAT) signaling pathway has been found to play a role in regulating growth and differentiation in several cell types. However, the functional significance of NFAT in the vasculature is largely unclear. Here we show that NFATc1, NFATc3, and NFATc4 are expressed in human myometrial arteries. |Chronic inhibition of NFAT significantly reduced IL-6 production in intact myometrial arteries and inhibited cell proliferation in vascular smooth muscle cells cultured from explants from the same arteries.

SIGNOR-251730

P31749

Q15942

1

phosphorylation

down-regulates

0.415

Akt binds and phosphorylates zyxin on serine 142, leading to its association with acinus zyxin is a substrate of caspases, but akt phosphorylation fails to protect its proteolytic degradation

SIGNOR-156122

Q13535

Q9Y253

1

phosphorylation

up-regulates

0.415

Atr-mediated phosphorylation of dna polymerase _ is needed for efficient recovery from uv damage. We show that, after uv irradiation, pol_ becomes phosphorylated at ser601 by the ataxia-telangiectasia mutated and rad3-related (atr) kinase. Atr-dependent phosphorylation of pol_ is necessary to restore normal survival and postreplication repair

SIGNOR-171290

Q15466

P10275

1

binding

down-regulates

0.415

We demonstrated that shp inhibited both ar-lbd and ntd-dependent transactivation, which evidenced for the first time a protein capable of inhibiting a steroid receptor amino-terminal-dependent transactivation. We further characterized the shp mechanism of action by showing that shp reversed ar coactivator-mediated activation

SIGNOR-112589

Q8IYA7

Q7RTU7

1

transcriptional regulation

up-regulates quantity by expression

0.415

MKX is a meniscus-enriched transcription factor. In human meniscus cells, MKX regulates the expression of meniscus marker genes, OA-related genes, and other transcription factors, including Scleraxis (SCX), SRY Box 5 (SOX5), and Runt domain-related transcription factor 2 (RUNX2).

SIGNOR-267213

Q9P1W9

Q13541

1

phosphorylation

up-regulates activity

0.414

Further, PIM2 triggered phosphorylation of AKT and 4EBP1 (XREF_FIG) clearly demonstrating the activation of PI3K pathway.

SIGNOR-279091

Q16539

Q99626

1

phosphorylation

down-regulates quantity by destabilization

0.414

ERK2, p38alpha and GSK-3beta can phosphorylate Cdx2 in vitro and that the 4S motif is required for phosphorylation by GSK-3beta and p38alpha|Phosphorylation of the homeotic tumor suppressor Cdx2 mediates its ubiquitin-dependent proteasome degradation

SIGNOR-250092

Q92993

P46531

1

acetylation

down-regulates

0.414

This result implies that the residues k2019, k2039, k2044, and k2068 of notch1-ic are the major targets of the acetyltransferase activity of tip60.

SIGNOR-156923

P12931

Q9UJM3

1

phosphorylation

down-regulates activity

0.414

Prior phosphorylation of Y395 dramatically increases the rate of EGFR phosphorylation of Mig6 on Y394 in vitro, and suppression of Src activity pharmacologically or by shRNA decreased phosphorylation of Mig6 on this site in cells, impairing EGFR binding and inhibition.|We further found that Mig6 inhibition of EGFR is modulated by Src via phosphorylation of Mig6 on Y395.

SIGNOR-279116

Q6K0P9

Q00987

1

binding

down-regulates quantity by destabilization

0.414

Here, we show that IFIXalpha1 downregulates HDM2, a principal negative regulator of p53, at the posttranslational level. IFIXalpha1 destabilizes HDM2 protein and promotes its ubiquitination. The E3 ligase activity of HDM2 appears to be required for this IFIXalpha1 effect. Importantly, HDM2 downregulation is required for the IFIXalpha1-mediated increase of p53 protein levels, transcriptional activity, and nuclear localization, suggesting that IFIXalpha1 positively regulates p53 by acting as a negative regulator of HDM2.

SIGNOR-268493

Q13464

Q9NRY4

1

phosphorylation

down-regulates activity

0.414

these results indicate that Rho-kinase can phosphorylate p190A RhoGAP at Ser1150 in COS7 cells. Similarly, the immunoblot analysis, through the use of the anti-p190A RhoGAP-pT1226 and -pS1236 antibodies, revealed that Rho-kinase can phosphorylate p190A RhoGAP at Thr1226 and Ser1236 in COS7 cells

SIGNOR-276177

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

O15264

P16949

1

phosphorylation

down-regulates

0.414

Serine 25 of oncoprotein 18 is a major cytosolic target for the mitogen-activated protein kinase.

SIGNOR-36362

Q13239

P29317

1

binding

down-regulates quantity by destabilization

0.414

These data are consistent with a model where SLAP induces Ephrin-independent EPHA2 degradation. | This activity is independent from CBL but requires SLAP SH3 interaction with the ubiquitination factor UBE4A and SLAP SH2 interaction with pTyr594-EPHA2.

SIGNOR-262964

P06241

O14522

1

phosphorylation

down-regulates activity

0.414

Synapse formation by PTPRT was inhibited by phosphorylation of tyrosine 912 within the membrane-proximal catalytic domain of PTPRT by Fyn. This tyrosine phosphorylation reduced phosphatase activity of PTPRT

SIGNOR-275543

P19784

Q9UNN4

1

phosphorylation

up-regulates activity

0.414

ALF was able to stabilize the binding of TBP to DNA, but it could not stabilize TBP mutants A184E, N189E, E191R, and R205E nor could it facilitate binding of the TBP-like factor TRF2/TLF to a consensus TATA element. However, phosphorylation of ALF with casein kinase II resulted in the partial restoration of complex formation using mutant TBPs. | Because the residues involved (Ser-280, Ser-281, Ser-316, and Ser-321) are conserved in ALF (Ser-356, Ser-357, Ser-418, and Ser-423), we tested whether its activity might also be affected by this modification. We first showed that ALF and TFIIAα/β polypeptides incubated with casein kinase II and [γ-32P]ATP could be labeled.

SIGNOR-250993

Q8N5S9

Q14012

1

phosphorylation

up-regulates activity

0.414

Human calcium-calmodulin dependent protein kinase I: cDNA cloning, domain structure and activation by phosphorylation at threonine-177 by calcium-calmodulin dependent protein kinase I kinase.

SIGNOR-250717

P51812

P19634

1

phosphorylation

up-regulates activity

0.414

In pressured arteries, RSK2 dependent activation of NHE-1 was associated with increased intracellular Ca 2+ transients, which would be expected to increase MLCK activity, thereby contributing to basal tone and myogenic responses.|Together, these data indicate that Ser 703 in NHE-1 is phosphorylated by RSK2, that RSK2 is associated with NHE-1, and that the time course of NHE-1 phosphorylation in response to intraluminal pressure is fast enough for this phosphorylation event to contribute to myogenic vasoconstriction.

SIGNOR-280119

O14757

Q9Y294

1

phosphorylation

up-regulates activity

0.414

Chk1 activated by ataxia telangiectasia mutated (ATM) kinase on DNA breaks in G1 promotes NHEJ through direct phosphorylation of ASF1A at Ser-166. ASF1A phosphorylated at Ser-166 interacts with the repair protein MDC1 and thus enhances MDC1's interaction with ATM and the stable localization of ATM at DNA breaks.

SIGNOR-277620

P12931

Q9NZQ3

1

phosphorylation

up-regulates activity

0.414

These results indicate that phosphorylation of SPIN90 by Src is essential for its synaptic targeting.

SIGNOR-279387

O43561

P42336

1

binding

up-regulates activity

0.414

By substituting these tyrosine residues in LAT with phenylalanine and by utilizing phosphorylated peptides derived from these sites, we mapped the tyrosine residues in LAT required for the direct interaction and activation of Vav, p85/p110alpha and phospholipase Cgamma1 (PLCgamma1). Our results indicate that Tyr(226) and Tyr(191) are required for Vav binding, whereas Tyr(171) and Tyr(132) are necessary for association and activation of phosphoinositide 3-kinase activity and PLCgamma1 respectively.

SIGNOR-246065

P52306

P61224

1

binding

up-regulates

0.414

Smggds has been previously shown to activate a wide variety of small gtpases, including the ras family members rap1a, rap1b, and k-ras, as well as the rho family members cdc42, rac1, rac2, rhoa, and rhob

SIGNOR-171552

Q9Y2U5

Q02750

1

phosphorylation

up-regulates

0.414

Both mekk2 and mekk3 are able to activate the jun kinase pathway in vivo. However, following routine immunoprecipitation in triton x-100, mekk2 but not mekk3 is able to effectively phosphorylate both sek-1 and mek-1 and to undergo autophosphorylation

SIGNOR-107692

P17612

Q13224

1

phosphorylation

up-regulates activity

0.414

Here we identify serine residue 1166 (Ser1166) in the carboxy-terminal tail of the NMDAR subunit GluN2B to be a direct molecular and functional target of PKA phosphorylation critical to NMDAR-dependent Ca(2+) permeation and Ca(2+) signaling in spines.

SIGNOR-276616

Q7Z2W4

O95453

1

binding

up-regulates activity

0.414

We provide evidence indicating that ZAP selectively recruits cellular poly(A)-specific ribonuclease (PARN) to shorten the poly(A) tail of target viral mRNA and recruits the RNA exosome to degrade the RNA body from the 3′ end.

SIGNOR-261296

P31751

Q9GZV1

1

phosphorylation

up-regulates

0.414

In vitro and in vivo studies confirmed that akt phosphorylates ankrd2 at ser-99. moreover, the forced expression of a phosphorylation-defective mutant form of ankrd2 in c2c12 myoblasts promoted a faster differentiation program, implicating akt-dependent phosphorylation at ser-99 in the negative regulation of myogenesis in response to stress conditions.

SIGNOR-236978

P42574

Q4V328

1

cleavage

up-regulates activity

0.414

These results suggest that the region of GRASP‐1 downstream of the Caspase‐3‐cleavage site is capable of activating the JNK signaling pathway by enhancing the phosphorylation of JNK. these results suggest that full length GRASP‐1 does not enhance JNK pathway activity, possibly due to the inhibitory effect of the N‐terminal fragment on the C‐terminal fragment. In contrast, Caspase‐3 cleavage of GRASP‐1 releases the C‐terminal fragment, which in turn activates JNK signaling by serving as a scaffold protein.

SIGNOR-260641

Q9Y243

O15111

1

phosphorylation

up-regulates

0.414

Although there are likely to be multiple levels of crosstalk between the pi3k-akt and nf-kb pathways, one mechanism has been attributed to direct phosphorylation of the amino acid residue t23 on ikb kinase alfa (ikkalfa) by akt, thereby leading to activation of this kinase upstream of nf-kb akt mediates ikkalpha phosphorylation at threonine 23 akt transiently associates in vivo with ikk and induces ikk activation. Akt mediates ikkalfa phosphorylation at threonine 23.Akt phosphorylates ikkalpha on t23, and this phosphorylation event is a prerequisite for the phosphorylation of p65 at s534 by ikkalpha and beta

SIGNOR-187062

O00254

P30679

1

binding

up-regulates activity

0.414

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-257360

Q7L7X3

Q7KZI7

1

phosphorylation

up-regulates activity

0.414

MARK family kinases can be activated by phosphorylation of a conserved threonine (Thr-208 in MARK2), and inactivated by phosphorylation of a serine (Ser-212), both in the activation loop of the catalytic domain. Activation is achieved by the kinases MARKK/TAO1 or LKB1, although the inactivating kinase was unknown. We show here that GSK3beta serves the role of the inhibitory kinase.

SIGNOR-276164

Q8TDV5

P63092

1

binding

up-regulates activity

0.414

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-256768

Q5XUX0

P24385

1

binding

down-regulates quantity by destabilization

0.413

FBXO31 serves as the substrate-recognition component of the SKP/Cullin/F-box protein class of E3 ubiquitin ligases and has been shown to direct degradation of pivotal cell-cycle regulatory proteins including cyclin D1 and the p53 antagonist MDM2.

SIGNOR-277379

O75116

Q96A00

1

phosphorylation

up-regulates activity

0.413

A major kinase for GPCR‐induced CPI‐17 phosphorylation is PKC which is activated by the PLCbeta‐produced signaling messenger diacylglycerol (DAG). It phosphorylates CPI‐17 at Thr38 residue that directly docks at the active site of MLCP, thereby inhibiting its activity and promoting an increase of phosphorylation of myosin and of other MLCP.| CPI-17 can be also directly phosphorylated at Thr38 residue by MYPT1-associated kinase [222], by PAK, which is downstream of Rac and/or Cdc42 cascade [223], by Rho-associated coiled-coil kinase (ROCK) [224] and by PKN [225].

SIGNOR-96696

Q5S007

P30048

1

phosphorylation

down-regulates activity

0.413

Here, we show that LRRK2 interacts with human peroxiredoxin 3 (PRDX3), a mitochondrial member of the antioxidant family of thioredoxin (Trx) peroxidases. Importantly, mutations in the LRRK2 kinase domain significantly increased phosphorylation of PRDX3 compared to wild-type. The increase in PRDX3 phosphorylation was associated with decreased peroxidase activity and increased death in LRRK2-expressing but not in LRRK2-depleted or vector-transfected neuronal cells.

SIGNOR-262891

Q92630

Q9UHD2

1

phosphorylation

down-regulates quantity by destabilization

0.413

We further found that DYRK2 phosphorylated Ser527 of TBK1, which is essential for the recruitment of NLRP4 and for the E3 ubiquitin ligase DTX4 to degrade TBK1.

SIGNOR-276939

P25105

O95837

1

binding

up-regulates activity

0.413

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-257436

Q96J02

Q16621

1

ubiquitination

down-regulates activity

0.413

Itch regulates p45/NF-E2 in vivo by Lys63-linked ubiquitination| Interestingly, Itch suppressed the transactivation activity of p45/NF-E2 by adding a Lys63-linked polyubiquitin chain. Confocal microscopy revealed that ubiquitinated p45/NF-E2 became localized in the cytoplasm when Itch was over-expressed. Thus, Itch-mediated ubiquitination of p45/NF-E2 does not target the protein for proteasomal degradation, but instead retains p45/NF-E2 in the cytoplasm, where it cannot function as a transactivator.

SIGNOR-275553

P17252

P35222

1

phosphorylation

down-regulates

0.413

As shown in Fig. 1 B, PKCalpha readily phosphorylated Ser33 and Ser37 / Thr41 on full-length beta-catenin (beta-catenin 1 - 781) and CTD deletion mutant (beta-catenin 1-682).|To examine the effect of the armadillo repeats 1-5 on PKCalpha mediated beta-catenin degradation, DNA constructs expressing beta-catenin 1 - 781 and beta-catenin deletion mutants (beta-catenin 1-422 and beta-catenin 1-138) were transfected into HEK293 cells, followed by treatment with increasing concentrations of A23187 and CGK062, which are known activators of PKCalpha.

SIGNOR-278492

P49354

P01112

1

null

up-regulates activity

0.413

Major investments have been made to target Ras through indirect routes. Inhibition of farnesyl transferase to block Ras maturation has failed in large clinical trials.

SIGNOR-242568

Q96RR4

Q14012

1

phosphorylation

up-regulates activity

0.413

Human calcium-calmodulin dependent protein kinase I: cDNA cloning, domain structure and activation by phosphorylation at threonine-177 by calcium-calmodulin dependent protein kinase I kinase.

SIGNOR-250716

Q92769

P33076

1

deacetylation

down-regulates quantity by repression

0.413

We report that CIITA and histone deacetylase 2 (HDAC2) interact in smooth muscle cells and macrophages as assayed by co-immunoprecipitations. HDAC2 deacetylates CIITA whereas both the HDAC inhibitor trichostatin A (TSA) and over-expression of HDAC2 interfering RNA increase CIITA acetylation. HDAC2 down-regulates CIITA recruitment to target promoters as evidenced by chromatin immunoprecipitation assays, and suppresses MHC II activation and collagen repression mediated by CIITA in luciferase reporter assays.

SIGNOR-254231

Q13547

P36952

1

transcriptional regulation

down-regulates quantity by repression

0.413

We found that maspin is selectively upregulated in IFIXα-expressing cells and involved in anti-invasive activity of IFIXα. We also present evidence indicating that IFIXα downregulates histone deacetylase 1 (HDAC1), which is possibly involved in the silencing of the maspin gene in human breast cancer cells. To confirm these results, we performed a luciferase assay using a maspin-promoter-luciferase plasmid. The results showed that HDAC1 overexpression suppressed the activity of the maspin promoter (Figure 3C). Therefore, our results suggest that IFIXα enhances maspin expression through the downregulation of HDAC1.

SIGNOR-268494

P43378

P46459

1

dephosphorylation

down-regulates

0.413

Our results suggest that the molecular mechanism by which ptp-meg2 promotes secretory vesicle fusion involves the local release of nsf from a tyrosine-phosphorylated, inactive state.

SIGNOR-128348

P46100

O96006

1

binding

up-regulates activity

0.413

XNP/dATRX physically interacts with DREF. our results show that DREF is required for the proper expression of pnr and that XNP/dATRX binds to DREF at the DRE sites, resulting in the repression of pnr gene expression.

SIGNOR-239729

P28482

P19484

1

phosphorylation

down-regulates activity

0.413

Evidence for ERK2-mediated TFEB phosphorylation came from ERK2-TFEB coimmuno-precipitation (fig. S12C) in normal but not in starved medium and from a peptide-based kinase assay showing that mutation of Ser142 to alanine abolished ERK2-mediated phosphorylation (

SIGNOR-248279

P50613

P03372

1

phosphorylation

up-regulates

0.413

Activation of estrogen receptor alpha by s118 phosphorylation involves a ligand-dependent interaction with tfiih and participation of cdk7.

SIGNOR-81170

P36873

P05198

1

dephosphorylation

up-regulates activity

0.412

Dephosphorylation of eIF2Î± is central to ISR signal termination to restore protein synthesis and normal cell functioning. It is mediated by protein phosphatase 1 (PP1) complex that recruits a PP1 catalytic subunit (PP1c) and one of the two regulatory subunits. In mammals, phosphatase activity is regulated by either PPP1R15A (also known as growth arrest and DNA damageâ€inducible protein, GADD34), which is induced as part of the ISR. the GADD34â€“PP1 complex acts as an important negative feedback loop to restore protein synthesis once the ER stress has been resolved, and as such aids in cell survival

SIGNOR-254119

O75665

Q13099

1

binding

up-regulates activity

0.412

Ofd1 acts at the distal centriole to build distal appendages, recruit Ift88, and stabilize centriolar microtubules at a defined length.

SIGNOR-251973

P37802

P60709

1

binding

down-regulates activity

0.412

Taken together, our data propose a novel, oncogene-tumor suppressor interplay, where oncogenic PFTK1 confers HCC cell motility through inactivating the actin-binding motile suppressing function of TAGLN2 via phosphorylation.

SIGNOR-265104

O94952

Q9Y6B2

1

binding

down-regulates quantity by destabilization

0.412

SCFFBXO21 ubiquitylates and thereby targets EID1 for degradation.We have now applied this approach to an uncharacterized human F-box protein, FBXO21, which serves as the substrate-recognition subunit of a SKP1-CUL1-F-box protein (SCF)-type E3, thereby identifying EID1 (EP300-interacting inhibitor of differentiation 1) as a candidate substrate.Over-expression of FBXO21 resulted in the down-regulation of EID1, whereas disruption of the FBXO21 gene with the CRISPR/Cas9 system stabilized EID1 and led to its accumulation in both the cytoplasm and nucleus. An in vitro ubiquitylation assay showed that EID1 is a direct substrate of SCF(FBXO)

SIGNOR-272429

P24385

O15379

1

binding

up-regulates

0.412

Collectively, these studies suggest an important role of cyclin d1 in regulation of ppargamma-mediated adipocyte differentiation through recruitment of hdacs to regulate ppar response element local chromatin structure and ppargamma function.

SIGNOR-134056

P28482

P10828

1

phosphorylation

down-regulates activity

0.412

We concluded that serine 142 of the tr dbd is the likely site of phosphorylation by t(4)-activated mapk and that the docking site on tr for activated mapk includes residues 128-133 (kgffrr), a basic amino acid-enriched motif novel for mapk substrates. Tr mutations in the proposed mapk docking domain and at residue 142 modulated t(4)-conditioned shedding of co-repressor and recruitment of co-activator proteins by the receptor, and they altered transcriptional activity of tr in a thyroid hormone response element-luciferase reporter assay.

SIGNOR-102216

P54829

P42262

1

dephosphorylation

down-regulates activity

0.412

One study showed that stimulation of the metabotrophic glutamate receptor mGluR5 leads to a STEP mediated tyrosine dephosphorylation of GluA2 and internalization of GluA1 and GluA2, although the tyrosine residue on GluA2 that is dephosphorylated by STEP remains unidentified.

SIGNOR-277040