GleghornLab/Signor_3class · Datasets at Hugging Face

IdA stringlengths 6 21	IdB stringlengths 6 21	labels int64 0 2	mechanism stringclasses 40 values	effect stringclasses 10 values	score float64 0.1 0.99 ⌀	sentence stringlengths 10 1.63k ⌀	signor_id stringlengths 12 14
P22455	P23760	0	transcriptional regulation	up-regulates quantity by expression	0.365	FGFR4 is a transcriptional target of PAX3 and the PAX3-FOXO1 fusion protein found in ARMS.	SIGNOR-251572
P23743	P12931	0	phosphorylation	up-regulates	0.459	Diacylglycerol kinase-alpha phosphorylation by src on y335 is required for activation, membrane recruitment and hgf-induced cell motility.	SIGNOR-157365
P38936	Q7Z419	0	ubiquitination	down-regulates quantity by destabilization	0.359	P53RFP, a p53-inducible RING-finger protein, regulates the stability of p21WAF1. Here we report the isolation of a novel transcriptional target of p53, designated p53RFP (p53-inducible RING-finger protein), whose product has E3 ubiquitin ligase activity. Its expression was negatively correlated to that of p21(WAF1) protein; p53RFP is likely to play a role in the regulation of this protein, probably through interaction with, and ubiquitination of, p21(WAF1).	SIGNOR-271478
P63092	P24530	2	binding	up-regulates activity	0.292	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-256781
Q00535	Q8N5V2	1	phosphorylation	up-regulates activity	0.42	Importantly, ephexin1, a Rho GEF, is phosphorylated by Cdk5 in vivo .	SIGNOR-279021
Q13627	P78559	1	phosphorylation	up-regulates activity	0.2	The phosphorylation of MAP1A and MAP2 by Dyrk1A was further confirmed by immunoprecipitating these proteins from the soluble fraction obtained after phosphorylating MTs (XREF_FIG).	SIGNOR-279032
Q5VWQ8	P31749	0	phosphorylation	down-regulates activity	0.497	DAB2IP can be phosphorylated by RIP1 on Ser 604 within the PER domain, and by AKT1 on Ser 847 within the proline-rich domain. Although RIP1-mediated phosphorylation is stimulatory,40 a recent study reported that AKT-mediated phosphorylation inhibits DAB2IP functions	SIGNOR-254780
P34897	P01106	0	transcriptional regulation	up-regulates quantity by expression	0.291	Myc regulates the de novo purine and pyrimidine synthetic genes in multiple biological systems. Intriguingly, MYC was found to directly activate the expression of SHMT1, and SHMT2, which are enzymes involved in single carbon metabolism and are essential for dNTP synthesis	SIGNOR-267380
P05156	P01024	1	cleavage	down-regulates activity	0.878	FH also serves as cofactor for the serine protease factor I (FI) that cleaves C3b into iC3b, unable to form C3 convertase (Fig 1B).	SIGNOR-263489
O00623	P50542	1	ubiquitination	up-regulates activity	0.653	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-253020
P50148	P25100	2	binding	up-regulates activity	0.585	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-257080
P60953	Q7Z6I6	0	gtpase-activating protein	down-regulates activity	0.458	We therefore developed a screening-compatible live-cell imaging assay, using FRET-based biosensors for the prototype GTPases RHOA, RAC1 and CDC4215,19,20 (Extended Data Fig. 2 and Supplementary Note 1)\|We found catalytic activities for 45/75 RhoGEFs and 48/63 RhoGAPs\| Our data thus not only reveal extensive promiscuity among regulators, but also that the inactivating RhoGAPs are less selective than the activating RhoGEFs (p-value=0.02)(Supplementary Table 2).	SIGNOR-260487
P07948	P40259	1	phosphorylation	up-regulates activity	0.678	Y182 of CD79a appears to be the initial and preferred site of Ag receptor phosphorylation by Src family kinases. In vitro, Src family Lyn and Fyn predominantly phosphorylate this residue in CD79a, and Y195 does so in CD79b	SIGNOR-251398
P21333	Q01974	2	binding	up-regulates	0.439	Additionally, the association of ror2 with the actin-binding protein filamin a is required for wnt5a-induced jnk activation and polarized cell migration.	SIGNOR-179668
Q99650	P13725	2	binding	up-regulates	0.793	The oncostatin m receptor (osmr) is part of receptor complexes for oncostatin m and interleukin-31.	SIGNOR-141588
P31040	P12931	0	phosphorylation	up-regulates activity	0.267	Phosphorylation-site analysis selects c-Src targets, including NDUFV2 (NADH dehydrogenase [ubiquinone] flavoprotein 2) at Tyr(193) of respiratory complex I and SDHA (succinate dehydrogenase A) at Tyr(215) of complex II. The phosphorylation of these sites by c-Src is supported by an in vivo assay using cells expressing their phosphorylation-defective mutants.	SIGNOR-276420
O75843	P46934	2	binding	up-regulates activity	0.401	Gamma2-Adaptin is a putative member of the clathrin adaptor protein family with unknown physiological function. We previously reported that gamma2-adaptin acts as a ubiquitin receptor by virtue of its ubiquitin-interacting motif. Here we demonstrate that this motif mediates a specific physical interaction with the ubiquitin ligase Nedd4 and promotes ubiquitination of gamma2-adaptin. These antibodies clearly recognized the 96 kDa form, thus demonstrating that a fraction of γ2-adaptin is modified by monoubiquitination (Fig. 1C). Thus, binding of γ2-adaptin to Nedd4 is not necessary for its membrane association.Accordingly, one possible function of γ2-adaptin may be to act as an adaptor for Nedd4, recruiting it to membrane compartments for subsequent ubiquitination.	SIGNOR-272636
P49841	Q9Y243	0	phosphorylation	down-regulates activity	0.736	Active AKT, a common mediator of cell survival signals induced by radiation through multiple intracellular signaling pathways,11, 12 suppresses apoptosis. AKT positively regulates cyclin D1 expression through inactivation of glycogen synthase kinase 3_ (GSK3_). The AKT-mediated phosphorylation of glycogen synthase kinase 3_ on serine9 decreases its kinase activity for Thr286 of cyclin D1, which inhibits the nuclear export and the cytoplasmic proteasomal degradation of cyclin D1	SIGNOR-245424
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
Q14289	O43150	1	phosphorylation	up-regulates activity	0.525	Tyrosine phosphorylation of Pap by Pyk2 or Src kinases. We have identified a new Pyk2 binding protein designated Pap. Pap is a multidomain protein composed of an N-terminal alpha-helical region with a coiled-coil motif, followed by a pleckstrin homology domain, an Arf-GAP domain, an ankyrin homology region, a proline-rich region, and a C-terminal SH3 domain. We demonstrate that Pap forms a stable complex with Pyk2 and that activation of Pyk2 leads to tyrosine phosphorylation of Pap in living cells.	SIGNOR-269704
P06239	Q16539	1	phosphorylation	up-regulates activity	0.475	Lck, Fyn, and Zap70 activate p38 even in the absence of Tyr182 phosphorylation.p38 is a substrate for Fyn, Lck and Zap70.Thus, T cell Src family kinases and Zap70 activate p38 by phosphorylating Tyr323.	SIGNOR-276029
Q13315	Q14738	1	phosphorylation	up-regulates activity	0.297	In the present study, we demonstrate that ataxia-telangiectasia mutated (ATM) directly phosphorylates and specifically regulates B56γ3, B56γ2 and B56δ, after DNA damage. We further show that phosphorylation of B56γ3 at Ser510 leads to an increase in B56γ3-PP2A complexes, and direction of PP2A phosphatase activity toward the substrate p53, activating its tumor-suppressive functions. we show that Ser510 phosphorylation significantly enhances the ability of B56γ3 to inhibit cell proliferation and anchorage-independent growth.	SIGNOR-276319
Q9BYP7	Q9Y666	1	phosphorylation	down-regulates activity	0.451	We have shown that with-no-lysine kinase 3 (WNK3) possesses several properties that suggest it could be the Cl−/volume-sensitive regulatory kinase that, in association with protein phosphatases, reciprocally modifies the phosphorylation/dephosphorylation states of the SLC12 proteins and thus their activities\|WNK3 activates NKCC1/2 and NCC and inhibits the KCCs	SIGNOR-264630
Q13224	P53355	0	phosphorylation	up-regulates activity	0.497	DAPK1 Activation Enhances the NR1 and NR2B Channel Conductance.\|Thus, an activated DAPK1 enhances NR1 and NR2B receptor channel conductance by phosphorylating NR2B subunit at Ser 1303.	SIGNOR-278397
Q9UBS5	P33176	0	relocalization	up-regulates activity	0.255	GABABR1 co-immunoprecipitated with Marlin-1 and kinesin-I, providing evidence for the existence of a complex between these proteins. Kinesin-I modulates GABAB receptor transport.	SIGNOR-260990
O00206	Q9NWF9	0	ubiquitination	down-regulates quantity by destabilization	0.388	Here we describe how a RING finger protein, Triad3A, acts as an E3 ubiquitin-protein ligase and enhances ubiquitination and proteolytic degradation of some TLRs. Triad3A overexpression promoted substantial degradation of TLR4 and TLR9 with a concomitant decrease in signaling, but did not affect TLR2 expression or signaling.	SIGNOR-271504
P52564	Q16539	1	phosphorylation	up-regulates activity	0.744	These data indicate that mkk6 phosphorylates p38 map kinase on thr-180 and tyr-182, the sites of phosphorylation that activate p38 map kinase	SIGNOR-40427
Q9NTG7	P08559	1	deacetylation	down-regulates activity	0.48	SIRT3 deacetylates and increases pyruvate dehydrogenase activity in cancer cells\|SIRT3 deacetylates PDHA1 lysine 321 (K321)	SIGNOR-267636
Q96J02	P06241	0	phosphorylation	down-regulates activity	0.366	Tyrosine phosphorylation of Itch appears to reduce its interaction with its substrate JunB. The turnover of JunB is accelerated in Fyn-deficient T cells, which is further reconstituted by Itch Tyr371 mutation	SIGNOR-245332
Q01484	Q5VST9	0	relocalization	up-regulates quantity	0.498	Ankyrin-B is targeted to the M-line via its interaction with the C-terminal domain of the large sarcomeric protein obscurin. Obscurin is targeted to the M-line via its N-terminal interactions with myomesin and titin. This population of ankyrin-B recruits B56α, a regulatory subunit of protein phosphatase 2A, to the M-line where the phosphatase may regulate the phosphorylation status of contractile and signalling proteins.	SIGNOR-266726
P17252	P08034	1	phosphorylation	up-regulates activity	0.362	Phosphorylation of connexin-32 by protein kinase C prevents its proteolysis by mu-calpain and m-calpain. \|In agreement with other authors (see Saez et al., 1990b), we have found that phosphorylation of connexin-32 by protein kinase A and protein kinase C occurs in serine residues, although we have detected trace amounts of phosphothreonine in connexin-32 phosphorylated by protein kinase C (results not shown). Indeed, Se233 has been shown to be the major phosphorylation site catalyzed by protein kinase A. However, Ser233, Ser239, and perhaps other serines are phosphorylated by protein kinase C (Saez et al., 1990b).	SIGNOR-248919
Q5TKA1	Q00526	0	phosphorylation	up-regulates	0.2	In this report, we demonstrate that cyclin e1/cdk3 phosphorylates lin-9 on thr-96. Mutating thr-96 to alanine inhibits activation of cyclins a2 and b1 promoters, whereas a phosphomimetic asp mutant strongly activates their promoters and triggers accelerated entry into g2/m phase in 293t cells.	SIGNOR-204529
P62136	O14965	1	dephosphorylation	down-regulates	0.436	Pp1 is shown to dephosphorylate active stk15 and abolish its activity in vitro.	SIGNOR-110411
Q9UPU5	Q13315	0	phosphorylation	up-regulates activity	0.25	Taken together, these data suggest that the ATM kinase mediated phosphorylation of USP24 is involved in USP24 stabilization/up regulation following UV irradiation.\|Taken together, these data suggest that the ATM kinase-mediated phosphorylation of USP24 is involved in USP24 stabilization/up-regulation following UV irradiation.	SIGNOR-280043
P25685	Q8IW41	0	phosphorylation	up-regulates	0.463	Phosphorylation of heat shock protein 40 (hsp40/dnajb1) by mitogen-activated protein kinase-activated protein kinase 5 (mk5/prak). Mk5 phosphorylates hsp40/dnajb1 in vivo at ser-149 or/and ser-151 and ser-171 in the c-terminal domain of hsp40/dnajb1. Mk5 modestly stimulates the atp hydrolyse activity of hsp40/hsp70 complex and enhances the repression of heat shock factor 1 driven transcription by hsp40/dnajb1.	SIGNOR-203464
Q9UKX7	P06493	0	phosphorylation	down-regulates	0.421	These results suggest that both ERK and Cdk1 directly phosphorylate Nup50 at Ser221 in intact cells\|Notably, erk phosphorylation of the fg repeat region of nup50 reduced its affinity for importin-beta family proteins, importin-beta and transportin.	SIGNOR-188061
P06493	O00399	1	phosphorylation	up-regulates activity	0.307	Here, we show that the p27/p25 heterodimer undergoes mitotic phosphorylation by cyclin‐dependent kinase 1 (Cdk1) at a single site, p27 Thr186, to generate an anchoring site for polo‐like kinase 1 (Plk1) at kinetochores.	SIGNOR-264777
Q9UQ84	Q13315	0	phosphorylation	up-regulates	0.83	The phosphorylation of exo1 by atm appears to regulate the activity of exo1 following resection, allowing optimal rad51 loading and the completion of hr repair.	SIGNOR-162304
P16333	Q13191	2	binding	up-regulates activity	0.526	Activated Cbl and Cbl-b interacted with Crk-L, Zap-70, Nck, PLC-gamma	SIGNOR-236054
O75084	O96014	2	binding	up-regulates activity	0.712	Consistent with this, xfz7 biochemically and functionally interacts with xwnt11	SIGNOR-78406
P38405	P29275	2	binding	up-regulates activity	0.524	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-256910
Q16665	Q9Y2K7	1	transcriptional regulation	up-regulates quantity by expression	0.2	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-271566
P00751	P00746	0	cleavage	up-regulates activity	0.804	The resulting proconvertase C3bB is subsequently cleaved by factor D (FD), generating the AP C3 convertase C3bBb	SIGNOR-263488
Q9Y566	O95886	0	relocalization	up-regulates activity	0.8	SHANK proteins are ‘master’ scaffolding proteins that tether and organize intermediate scaffolding proteins. They are located at excitatory synapses, where they are crucial for proper synaptic development and function. SAPAP proteins subsequently bind to the PDZ domain of members of the SHANK protein family. SHANK proteins then bind to the actin cytoskeleton and to Homer protein, which in turn interacts with mGluRs. Through these extended links, PSD95, SAPAP, SHANK and Homer proteins form a quaternary complex that brings together mGluR and NMDAR complexes in the PSD (FIG. 3).	SIGNOR-264592
Q9Y2U5	P45985	1	phosphorylation	up-regulates activity	0.612	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-107695
P29460	P29459	2	binding	up-regulates	0.848	However, a proper conformation required for high affinity binding is achieved only when p40 is associated with a p35 subunit or another p40 subunit. When p40 is associated with a p35 subunit, the heterodimer acts as an agonist mediating biologic activity. However, when p40 associates with another p40, the homodimer behaves as an antagonist in vitro	SIGNOR-27619
Q9UM47	P78504	2	binding	up-regulates	0.644	Here we report the first x-ray structure of a functional fragment of a notch ligand, the dsl-egf3 domains of human jagged-1 (j-1dsl-egf3). The structure identifies a highly conserved face of the dsl domain and we show, by functional analysis of drosophila ligand mutants, that this surface is required for both cis- and trans-regulatory interactions with notch.	SIGNOR-179625
Q14247	P27361	0	phosphorylation	up-regulates	0.422	Cortactin is regulated by multiple phosphorylation events, including phosphorylation of s405 and s418 by extracellular regulated kinases (erk)1/2. Erk1/2 phosphorylation of cortactin has emerged as an important positive regulatory modification, enabling cortactin to bind and activate the arp2/3 regulator neuronal wiskott-aldrich syndrome protein (n-wasp), promoting actin polymerization and enhancing tumor cell movement.	SIGNOR-165212
Q92915	Q9Y5Y9	2	binding	down-regulates activity	0.2	Sodium channel fast inactivation is modulated by alpha subunit interaction with a family of cytoplasmic proteins termed fibroblast growth factor homologous factors (FHFs). In this paper, we report that all A-type FHFs exert rapid onset long-term inactivation on Nav1.6 and other sodium channels.	SIGNOR-253441
Q7KZI7	P49841	0	phosphorylation	down-regulates activity	0.349	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-276163
Q5UIP0	Q96T88	0	polyubiquitination	down-regulates activity	0.2	UHRF1 mediates K63-linked polyubiquitination of RIF1, and results in its dissociation from 53BP1 and DSBs thereby facilitating HR initiation.	SIGNOR-277193
P07948	Q92918	1	phosphorylation	up-regulates activity	0.381	BCR ligation induced rapid tyrosine-phosphorylation of HPK1 mainly by Syk and Lyn, resulting in its association with BASH and catalytic activation. Tyr-379 within HPK1 is essential for binding to BASH and thus strongly suggest that the DDDYDDV sequence containing the phosphorylated Tyr-379 is the binding site for the BASH SH2 domain.	SIGNOR-251403
Q9Y5X4	P20393	2	binding	up-regulates	0.399	All four proteins, nr2e3, nr1d1, nrl and crx, could be co-immunoprecipitated from the bovine retinal nuclear extract, suggesting their existence in a multi-protein transcriptional regulatory complex in vivo.	SIGNOR-125661
P68400	Q06413	1	phosphorylation	up-regulates activity	0.333	We show that serine 59 located between the MADS and MEF2 domains of MEF2C is phosphorylated in vivo and can be phosphorylated in vitro by casein kinase-II (CKII). Phosphorylation of this site enhanced the DNA binding and transcriptional activity of MEF2C by increasing its DNA binding activity 5-fold.	SIGNOR-250914
Q92615	P63244	2	binding	up-regulates activity	0.2	Here we show that LARP4B is a cytoplasmic protein that co-sediments with polysomes and accumulates upon stress induction in stress granules. Biochemical studies further show that the protein interacts with two key factors of the translational machinery, namely, the cytoplasmic poly(A) binding protein (PABPC1) and the receptor for activated C Kinase (RACK1). The biochemical and functional data of LARP4B presented in this study suggest a possible mode of action of LARP4B in translation. Assuming that LARP4B interacts with mRNA-associated PABPC1 and RACK1 simultaneously, it may form a bridge between the 3′ end of mRNAs and the initiating ribosome. This process would lead to mRNA circularization, possibly in an analogous way as it has been described for PABPC1 and eIF4G, the scaffold protein of the cap-binding complex.	SIGNOR-260941
P30307	P11309	0	phosphorylation	up-regulates activity	0.348	First, Pim-1 activates the Cdc25C phosphatase directly through phosphorylation, very probably at the N-terminal part of the protein.\|We find that phosphorylation by Pim-1 enhances the phosphatase activity of Cdc25C and in transfected cells that are arrested in G2/M by bleomycin, Pim-1 can enhance progression into G1.	SIGNOR-278298
P15927	Q96AP0	2	binding	down-regulates activity	0.2	The current model for how telomeres repress ATR signaling proposes that POT1/TPP1 prevents the binding of RPA to the single-stranded telomeric DNA	SIGNOR-263327
Q13315	Q9NRC8	0	deacetylation	down-regulates activity	0.36	Here, we report that sirtuin 7 (SIRT7)-mediated deacetylation is essential for dephosphorylation and deactivation of ATM. We show that SIRT7, a class III histone deacetylase, interacts with and deacetylates ATM in vitro and in vivo. \|Upon DNA damage, ATM is activated via a series of highly organized machineries, including acetylation by the histone acetyltransferase TIP60 at lysine 3016	SIGNOR-275890
O96006	P25398	1	transcriptional regulation	up-regulates quantity by expression	0.2	HDRE-like sequences act as positive regulatory elements for RP gene promoter activities in vivo. \| Cotransfection of a plasmid expressing hDREF increased luciferase expression directed by each RP gene promoter more than 30% compared with the values obtained without the hDREF-expressing plasmid.	SIGNOR-266084
P62136	Q02447	1	dephosphorylation	down-regulates activity	0.2	Transcription factors Sp1 and Sp3 activate alpha-ENaC2 transcription through a GC-rich element (Sp1-binding site) in the promoter. Sp1 and Sp3 are essential for alpha-ENaC2 transcription in lung epithelial cells and that dephosphorylation of the Sp transcription factors by PP1 suppresses alpha-ENaC2 expression.	SIGNOR-251953
Q8NEB9	Q96F24	2	binding	down-regulates activity	0.688	NRBF2 S113 and S120 phosphorylation negatively regulates autophagy. Phosphorylated NRBF2 inhibits autophagy, preferentially binds a nonautophagic form of the PtdIns3K complex consisting of PIK3C3-PIK3R4 only, and this NRBF2-associated PtdIns3K complex has low lipid kinase activity. Phosphorylated NRBF2 inhibits autophagy, preferentially binds a nonautophagic form of the PtdIns3K complex consisting of PIK3C3-PIK3R4 only, and this NRBF2-associated PtdIns3K complex has low lipid kinase activity.	SIGNOR-265879
Q9ULX9	P54821	2	binding	down-regulates activity	0.354	Hoxd12 and MHox, that interact with v-/c-Maf, using the phage display method. The Hox proteins also could associate with the other Maf protein family members, MafB, MafK, MafF, and MafG, but not with Jun and Fos. The Hox proteins negatively regulated the DNA binding, transactivation and cell-transforming abilities of Maf.	SIGNOR-221890
P15336	Q99986	0	phosphorylation	up-regulates	0.371	Vrk1 phosphorylates atf2 mainly on thr-73, stabilizing the atf2 protein and increasing its intracellular level.	SIGNOR-124330
O95837	P29274	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-257413
Q96T23	P53350	0	phosphorylation	up-regulates activity	0.352	Moreover, CDK1 phosphorylates RSF1 at Ser1375, and this phosphorylation is necessary for PLK1 recruitment. Subsequently, PLK1 phosphorylates RSF1 at Ser1359, stabilizing PLK1 deposition.	SIGNOR-273590
P31749	Q92900	1	phosphorylation	up-regulates activity	0.257	AKT-Mediated UPF1 Phosphorylation at T151 Promotes UPF1 Helicase Activity	SIGNOR-277597
Q16543	P68400	0	phosphorylation	up-regulates activity	0.397	Phosphorylation of serine 13 is required for the proper function of the Hsp90 co-chaperone, Cdc37. \| In this report, we demonstrate that mammalian Cdc37 is phosphorylated on Ser13 in situ in rabbit reticulocyte lysate and in cultured K562 cells and that casein kinase II is capable of quantitatively phosphorylating recombinant Cdc37 at this site.	SIGNOR-250838
O60341	Q9C0F0	2	binding	down-regulates activity	0.266	Here, we showed that ASXL3 interacts with HP1α and LSD1, leading to transcriptional repression.	SIGNOR-266764
P62993	Q9UQC2	2	binding	up-regulates	0.911	The signaling mechanism utilizes an adaptor protein, shc, which binds to a phosphotyrosine residue on the il-2/15r?, Resulting in activation of grb2 and onto akt via the shc-grb2-gab2-pi3k-akt signaling pathway to increase cell proliferation and/or survival	SIGNOR-204969
Q9UQM7	O00631	1	phosphorylation	down-regulates activity	0.241	SLN is also phosphorylated by CaMKII at Thr 5, and a phosphorylation mimic (Thr5Glu mutation) abolishes the inhibitory function of ectopically expressed SLN in adult rat ventricular myocytes\| Thr 5 interacts with SERCA Trp 932, and phosphorylation at this site would cause a steric clash that destabilizes binding	SIGNOR-264778
P07949	Q8TEW6	2	binding	up-regulates	0.576	We identified two new family members, dok-4 and dok-5, that can directly associate with y1062 of c-ret dok-4 and dok-5 enhance c-ret-dependent activation of mitogen-activated protein kinase	SIGNOR-109513
P46531	Q96EB6	0	deacetylation	down-regulates	0.423	The acetylation marks on notch1-icd are removed by the deacetylase sirt1, suggesting that both deacetylation of notch1-icd and of histones inhibit notch signaling.	SIGNOR-195333
Q9BRX9	Q02750	2	binding	up-regulates	0.526	Morg1 specifically associates with several components of the erk pathway, including mp1, raf-1, mek, and erk, and stabilizes their assembly into an oligomeric complex.	SIGNOR-124470
P08631	Q13444	1	phosphorylation	up-regulates	0.355	Hck, and to a lesser extent lck, phosphorylated the adam15. Deletion and point mutation analysis of the adam15 cytoplasmic domain confirmed the importance of the proline-rich motifs for grb2 and lck binding and indicated the regulatory nature of tyr(715) and tyr(735). These data demonstrate selective, phosphorylation-dependent interactions of adam15 with src family ptks and grb2, which highlight the potential for integration of adam functions and cellular signaling.	SIGNOR-112919
O95837	Q01726	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-257085
P31751	P56278	2	binding	up-regulates	0.452	Full-length tcl1 and its isoforms bind to akt / in in vitro kinase assays using gsk-3_ as a substrate, we found that the presence of any of the tcl1 family proteins (tcl1, mtcp1, or tcl1b) as gst fusion proteins significantly enhanced akt-induced gsk-3_ phosphorylation	SIGNOR-81674
O00187	Q15485	2	binding	up-regulates activity	0.608	In the lectin pathway, mannose-binding lectin (MBL) and ficolins bind to pathogens and activate MBL-associated serine protease-2 (MASP-2)	SIGNOR-263413
P28482	P22736	1	phosphorylation	up-regulates activity	0.669	NGFI-B is an inducible orphan nuclear receptor that initiates apoptosis. Growth factors such as EGF activate the MAP kinase ERK, whose activity may determine if a cell survives or undergoes apoptosis. EGF stimulation of cells leads to phosphorylation of threonine in NGFI-B. Thr-142 of NGFI-B is comprised in a consensus MAP kinase site and was identified as a preferred substrate for ERK2 (but not ERK1) in vitro.	SIGNOR-249430
Q05925	P55075	1	transcriptional regulation	down-regulates quantity by repression	0.452	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. Our data support the model that Engrailed heterodimerized with Pbx might activate transcription, while Engrailed or Pbx proteins alone might repress transcription	SIGNOR-265776
Q9Y4C1	Q5TEC6	1	demethylation	up-regulates activity	0.2	Using a biochemical assay coupled with chromatography, we have purified a JmjC domain-containing protein, JHDM2A, which specifically demethylates mono- and dimethyl-H3K9.	SIGNOR-276843
O95239	Q13131	0	phosphorylation	up-regulates activity	0.2	We found that the strong direct substrate KIF4A is phosphorylated by AMPK at Ser801.Using in vitro kinase assays, we found that active AMPK and Aurora B phosphorylated KIF4A at Ser801 and Thr799 respectively in a time-dependent manner (Figure 5D). KIF4A is phosphoregulated by AMPK and Aurora B. Although AMPK phosphorylation increased the ATPase activity of KIF4A, Aurora B phosphorylation resulted in a stronger increase (Figure 5I), which might be consistent with the more powerful kinase function of Aurora B during mitosis.	SIGNOR-265991
Q5S007	P61026	1	phosphorylation	down-regulates activity	0.33	To investigate whether the phosphorylation of Rab10 by LRRK2 is direct, we performed an in vitro kinase assay using recombinant components. Notably, we found that both wt and LRRK2-G2019S, but neither kinase inactive D1994A mutant nor small molecule-inhibited LRRK2, efficiently phosphorylated Rab10, proving a direct kinase-substrate relationship (Figure 2C). Furthermore, incubation of Rab10 with LRRK2 followed by tryptic digestion and MS analysis unambiguously identified T73 as the major phosphorylation site (Figure 2—figure supplement 1B)\|In pathogenic conditions, in which LRRK2 is hyperactive, RabGTPases have strongly diminished affinities for GDIs.	SIGNOR-261277
Q96BY2	Q9NS23	2	binding	up-regulates activity	0.572	Modulator of apoptosis 1 (MOAP-1) is a BH3-like protein that plays key roles in cell death or apoptosis. It is an integral partner to the tumor suppressor protein, Ras association domain family 1A (RASSF1A), and functions to activate the Bcl-2 family pro-apoptotic protein Bax.	SIGNOR-272914
P53350	P18031	1	phosphorylation	up-regulates activity	0.354	Cdk1-cyclin B1 directly phosphorylates PTP1B at serine 386 in a kinase assay. Recombinant Plk1 phosphorylates PTP1B on serine 286 and 393 in vitro, however, it requires a priming phosphorylation by Cdk1 at serine 386 highlighting a novel co-operation between Cdk1 and Plk1 in the regulation of PTP1B.\|Finally, phosphorylation on serine 286 enhanced PTP1B phosphatase activity.	SIGNOR-272990
P49841	Q16539	2	binding	down-regulates	0.29	Here we show that similar to the interaction with traf4 and axin, the kinase domain of mekk4 interacts with the multifunctional serine/threonine kinase gsk3beta. Gsk3beta binding to mekk4 blocks mekk4 dimerization that is required for mekk4 activation, effectively inhibiting mekk4 stimulation of the jnk and p38 mapk pathways	SIGNOR-157544
Q08117	O95343	2	binding	down-regulates activity	0.2	Biochemical and mutational analysis shows that the Six domain of both SIX3 and SIX6 strongly interact with the QD domain of TLE1 and AES. AES abrogates SIX3- and SIX6-induced phenotypes	SIGNOR-234586
Q13177	P12931	0	phosphorylation	up-regulates	0.562	Pak2 became tyrosine phosphorylated in its n-terminal regulatory domain, where y130 was identified as the major phosphoacceptor site. Tyrosine phosphorylation-mediated superactivation of pak2 could be induced by overexpression of different src kinases or by inhibiting cellular tyrosine phosphatases with pervanadate and could be blocked by the src kinase inhibitor pp1 or by mutating the y130 residue.	SIGNOR-92460
P01298	P50391	2	binding	up-regulates	0.652	Human y4 bound human pp family members in i-pyy membrane binding assays with a distinctive rank order (table 1): pp > pyy > npy > npy free acid.	SIGNOR-24230
P49286	P63096	2	binding	up-regulates activity	0.471	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-256707
P49841	P35222	1	phosphorylation	down-regulates activity	0.86	Wnt regulation of beta-catenin degradation is essential for development and carcinogenesis. beta-catenin degradation is initiated upon amino-terminal serine/threonine phosphorylation, which is believed to be performed by glycogen synthase kinase-3 (GSK-3) in complex with tumor suppressor proteins Axin and adnomatous polyposis coli (APC).	SIGNOR-116528
O60524	P51608	2	binding	up-regulates activity	0.2	MeCP2 interacts directly with Prpf3 and Sdccag1\|MeCP2’s association with Prpf3, a major component of the spliceosome, supports MeCP2 as having a role in modulating mRNA splicing\|Notably, Mecp2308/Y mice, which produce a truncated form of MeCP2 and reproduce many of the classical features of RTT [43], have been shown to have multiple genes that are abnormally spliced in the brain [23]. This suggests the C-terminal portion of MeCP2, which we have identified as the putative Sdccag1 interaction domain, plays a critical role in regulating alternative splicing.	SIGNOR-277692
P53355	P37840	1	phosphorylation	up-regulates quantity	0.27	We demonstrated that DAPK1 directly phosphorylates \u03b1-synuclein at Ser129, and induces the formation of insoluble \u03b1-synuclein aggregates.	SIGNOR-278440
P68400	P05114	1	phosphorylation	down-regulates	0.2	Protein kinases that phosphorylate hmg-14 17 at the major sites have been implicated from previous in vitro studies. Protein kinase c and a similar calcium phospholipid-dependent kinase have been reported to phosphorylate both proteins in vitro, where the phosphorylation of hmg-17 occurs predominantly at ser24 and to a lesser degree at ser28. Phosphorylation of hmg-14 at ser6 by camp- or cgmp-dependent kinases has also been reported. Thus, other kinases may contribute to phosphorylation at ser6 in response to oa. Ser88 and ser98 on hmg-14 are also phosphorylated by casein kinase ii in vitro. we conclude that the correlation we observe reflects a causal relationship, in which phosphorylation somehow facilitates the redistribution of hmg-14 and -17 toward non-nuclear pools.	SIGNOR-76274
P55265	Q9Y243	0	phosphorylation	down-regulates activity	0.2	AKT-dependent phosphorylation of the adenosine deaminases ADAR-1 and -2 inhibits deaminase activity. Coimmunoprecipitation studies and in vitro kinase assays revealed that AKT-1, -2, and -3 interact with both ADAR1p110 and ADAR2 and phosphorylate these RNA editases. Using site-directed mutagenesis of suspected AKT phosphorylation sites, AKT was found to primarily phosphorylate ADAR1p110 and ADAR2 on T738 and T553, respectively	SIGNOR-276191
P17252	P61587	1	phosphorylation	down-regulates activity	0.2	PKCalpha dependent Rnd3 phosphorylation downregulates Rnd3 inhibitory activity and leads to increased signaling through the Rho-ROCK pathway.\|We further show that PKC\u03b1 directly phosphorylates Rnd3 in an in vitro kinase assay.	SIGNOR-279557
P55957	Q9Y6C9	0	relocalization	up-regulates	0.303	Mtch2/mimp (mitochondrial carrier homologue 2/met-induced mitochondrial protein), a novel truncated bid (tbid)-interacting protein, is a surface-exposed outer mitochondrial membrane protein that facilitates the recruitment of tbid to mitochondria	SIGNOR-165081
P49841	Q96F46	1	phosphorylation	down-regulates quantity by destabilization	0.2	Glycogen synthase kinase 3 (GSK3) constitutively bound to and phosphorylated IL-17RA at T780, leading to ubiquitination and proteasome-mediated degradation of IL-17RA, thus inhibiting IL-17-mediated inflammation.	SIGNOR-277205
P10398	P12931	0	phosphorylation	up-regulates activity	0.489	A-raf behaves like raf-1, being weakly activated by oncogenic ras more strongly activated by oncogenic src, and these signals synergize to give maximal activation	SIGNOR-236459
P07900	P10275	2	binding	up-regulates activity	0.763	The unliganded AR resides predominately in the cytoplasm as a heteromeric complex with hsp90 and other chaperone proteins. These chaperone proteins maintain AR in a form that is receptive to ligand binding. Regulation of gene expression by androgen-activated AR occurs through receptor nuclear translocation, dimerization, and binding to androgen response elements (AREs) in the DNA of target genes.	SIGNOR-251536
Q9Y4K3	Q9UNE7	0	ubiquitination	down-regulates quantity by destabilization	0.466	CHIP promotes TRAF6 ubiquitination and degradation.\|These results suggest that CHIP negatively regulates the stability of TRAF6.	SIGNOR-278670

P22455

P23760

0

transcriptional regulation

up-regulates quantity by expression

0.365

FGFR4 is a transcriptional target of PAX3 and the PAX3-FOXO1 fusion protein found in ARMS.

SIGNOR-251572

P23743

P12931

0

phosphorylation

up-regulates

0.459

Diacylglycerol kinase-alpha phosphorylation by src on y335 is required for activation, membrane recruitment and hgf-induced cell motility.

SIGNOR-157365

P38936

Q7Z419

0

ubiquitination

down-regulates quantity by destabilization

0.359

P53RFP, a p53-inducible RING-finger protein, regulates the stability of p21WAF1. Here we report the isolation of a novel transcriptional target of p53, designated p53RFP (p53-inducible RING-finger protein), whose product has E3 ubiquitin ligase activity. Its expression was negatively correlated to that of p21(WAF1) protein; p53RFP is likely to play a role in the regulation of this protein, probably through interaction with, and ubiquitination of, p21(WAF1).

SIGNOR-271478

P63092

P24530

2

binding

up-regulates activity

0.292

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-256781

Q00535

Q8N5V2

1

phosphorylation

up-regulates activity

0.42

Importantly, ephexin1, a Rho GEF, is phosphorylated by Cdk5 in vivo .

SIGNOR-279021

Q13627

P78559

1

phosphorylation

up-regulates activity

0.2

The phosphorylation of MAP1A and MAP2 by Dyrk1A was further confirmed by immunoprecipitating these proteins from the soluble fraction obtained after phosphorylating MTs (XREF_FIG).

SIGNOR-279032

Q5VWQ8

P31749

0

phosphorylation

down-regulates activity

0.497

DAB2IP can be phosphorylated by RIP1 on Ser 604 within the PER domain, and by AKT1 on Ser 847 within the proline-rich domain. Although RIP1-mediated phosphorylation is stimulatory,40 a recent study reported that AKT-mediated phosphorylation inhibits DAB2IP functions

SIGNOR-254780

P34897

P01106

0

transcriptional regulation

up-regulates quantity by expression

0.291

Myc regulates the de novo purine and pyrimidine synthetic genes in multiple biological systems. Intriguingly, MYC was found to directly activate the expression of SHMT1, and SHMT2, which are enzymes involved in single carbon metabolism and are essential for dNTP synthesis

SIGNOR-267380

P05156

P01024

1

cleavage

down-regulates activity

0.878

FH also serves as cofactor for the serine protease factor I (FI) that cleaves C3b into iC3b, unable to form C3 convertase (Fig 1B).

SIGNOR-263489

O00623

P50542

1

ubiquitination

up-regulates activity

0.653

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-253020

P50148

P25100

2

binding

up-regulates activity

0.585

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-257080

P60953

Q7Z6I6

0

gtpase-activating protein

down-regulates activity

0.458

We therefore developed a screening-compatible live-cell imaging assay, using FRET-based biosensors for the prototype GTPases RHOA, RAC1 and CDC4215,19,20 (Extended Data Fig. 2 and Supplementary Note 1)|We found catalytic activities for 45/75 RhoGEFs and 48/63 RhoGAPs| Our data thus not only reveal extensive promiscuity among regulators, but also that the inactivating RhoGAPs are less selective than the activating RhoGEFs (p-value=0.02)(Supplementary Table 2).

SIGNOR-260487

P07948

P40259

1

phosphorylation

up-regulates activity

0.678

Y182 of CD79a appears to be the initial and preferred site of Ag receptor phosphorylation by Src family kinases. In vitro, Src family Lyn and Fyn predominantly phosphorylate this residue in CD79a, and Y195 does so in CD79b

SIGNOR-251398

P21333

Q01974

2

binding

up-regulates

0.439

Additionally, the association of ror2 with the actin-binding protein filamin a is required for wnt5a-induced jnk activation and polarized cell migration.

SIGNOR-179668

Q99650

P13725

2

binding

up-regulates

0.793

The oncostatin m receptor (osmr) is part of receptor complexes for oncostatin m and interleukin-31.

SIGNOR-141588

P31040

P12931

0

phosphorylation

up-regulates activity

0.267

Phosphorylation-site analysis selects c-Src targets, including NDUFV2 (NADH dehydrogenase [ubiquinone] flavoprotein 2) at Tyr(193) of respiratory complex I and SDHA (succinate dehydrogenase A) at Tyr(215) of complex II. The phosphorylation of these sites by c-Src is supported by an in vivo assay using cells expressing their phosphorylation-defective mutants.

SIGNOR-276420

O75843

P46934

2

binding

up-regulates activity

0.401

Gamma2-Adaptin is a putative member of the clathrin adaptor protein family with unknown physiological function. We previously reported that gamma2-adaptin acts as a ubiquitin receptor by virtue of its ubiquitin-interacting motif. Here we demonstrate that this motif mediates a specific physical interaction with the ubiquitin ligase Nedd4 and promotes ubiquitination of gamma2-adaptin. These antibodies clearly recognized the 96 kDa form, thus demonstrating that a fraction of γ2-adaptin is modified by monoubiquitination (Fig. 1C). Thus, binding of γ2-adaptin to Nedd4 is not necessary for its membrane association.Accordingly, one possible function of γ2-adaptin may be to act as an adaptor for Nedd4, recruiting it to membrane compartments for subsequent ubiquitination.

SIGNOR-272636

P49841

Q9Y243

0

phosphorylation

down-regulates activity

0.736

Active AKT, a common mediator of cell survival signals induced by radiation through multiple intracellular signaling pathways,11, 12 suppresses apoptosis. AKT positively regulates cyclin D1 expression through inactivation of glycogen synthase kinase 3_ (GSK3_). The AKT-mediated phosphorylation of glycogen synthase kinase 3_ on serine9 decreases its kinase activity for Thr286 of cyclin D1, which inhibits the nuclear export and the cytoplasmic proteasomal degradation of cyclin D1

SIGNOR-245424

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

Q14289

O43150

1

phosphorylation

up-regulates activity

0.525

Tyrosine phosphorylation of Pap by Pyk2 or Src kinases. We have identified a new Pyk2 binding protein designated Pap. Pap is a multidomain protein composed of an N-terminal alpha-helical region with a coiled-coil motif, followed by a pleckstrin homology domain, an Arf-GAP domain, an ankyrin homology region, a proline-rich region, and a C-terminal SH3 domain. We demonstrate that Pap forms a stable complex with Pyk2 and that activation of Pyk2 leads to tyrosine phosphorylation of Pap in living cells.

SIGNOR-269704

P06239

Q16539

1

phosphorylation

up-regulates activity

0.475

Lck, Fyn, and Zap70 activate p38 even in the absence of Tyr182 phosphorylation.p38 is a substrate for Fyn, Lck and Zap70.Thus, T cell Src family kinases and Zap70 activate p38 by phosphorylating Tyr323.

SIGNOR-276029

Q13315

Q14738

1

phosphorylation

up-regulates activity

0.297

In the present study, we demonstrate that ataxia-telangiectasia mutated (ATM) directly phosphorylates and specifically regulates B56γ3, B56γ2 and B56δ, after DNA damage. We further show that phosphorylation of B56γ3 at Ser510 leads to an increase in B56γ3-PP2A complexes, and direction of PP2A phosphatase activity toward the substrate p53, activating its tumor-suppressive functions. we show that Ser510 phosphorylation significantly enhances the ability of B56γ3 to inhibit cell proliferation and anchorage-independent growth.

SIGNOR-276319

Q9BYP7

Q9Y666

1

phosphorylation

down-regulates activity

0.451

We have shown that with-no-lysine kinase 3 (WNK3) possesses several properties that suggest it could be the Cl−/volume-sensitive regulatory kinase that, in association with protein phosphatases, reciprocally modifies the phosphorylation/dephosphorylation states of the SLC12 proteins and thus their activities|WNK3 activates NKCC1/2 and NCC and inhibits the KCCs

SIGNOR-264630

Q13224

P53355

0

phosphorylation

up-regulates activity

0.497

DAPK1 Activation Enhances the NR1 and NR2B Channel Conductance.|Thus, an activated DAPK1 enhances NR1 and NR2B receptor channel conductance by phosphorylating NR2B subunit at Ser 1303.

SIGNOR-278397

Q9UBS5

P33176

0

relocalization

up-regulates activity

0.255

GABABR1 co-immunoprecipitated with Marlin-1 and kinesin-I, providing evidence for the existence of a complex between these proteins. Kinesin-I modulates GABAB receptor transport.

SIGNOR-260990

O00206

Q9NWF9

0

ubiquitination

down-regulates quantity by destabilization

0.388

Here we describe how a RING finger protein, Triad3A, acts as an E3 ubiquitin-protein ligase and enhances ubiquitination and proteolytic degradation of some TLRs. Triad3A overexpression promoted substantial degradation of TLR4 and TLR9 with a concomitant decrease in signaling, but did not affect TLR2 expression or signaling.

SIGNOR-271504

P52564

Q16539

1

phosphorylation

up-regulates activity

0.744

These data indicate that mkk6 phosphorylates p38 map kinase on thr-180 and tyr-182, the sites of phosphorylation that activate p38 map kinase

SIGNOR-40427

Q9NTG7

P08559

1

deacetylation

down-regulates activity

0.48

SIRT3 deacetylates and increases pyruvate dehydrogenase activity in cancer cells|SIRT3 deacetylates PDHA1 lysine 321 (K321)

SIGNOR-267636

Q96J02

P06241

0

phosphorylation

down-regulates activity

0.366

Tyrosine phosphorylation of Itch appears to reduce its interaction with its substrate JunB. The turnover of JunB is accelerated in Fyn-deficient T cells, which is further reconstituted by Itch Tyr371 mutation

SIGNOR-245332

Q01484

Q5VST9

0

relocalization

up-regulates quantity

0.498

Ankyrin-B is targeted to the M-line via its interaction with the C-terminal domain of the large sarcomeric protein obscurin. Obscurin is targeted to the M-line via its N-terminal interactions with myomesin and titin. This population of ankyrin-B recruits B56α, a regulatory subunit of protein phosphatase 2A, to the M-line where the phosphatase may regulate the phosphorylation status of contractile and signalling proteins.

SIGNOR-266726

P17252

P08034

1

phosphorylation

up-regulates activity

0.362

Phosphorylation of connexin-32 by protein kinase C prevents its proteolysis by mu-calpain and m-calpain. |In agreement with other authors (see Saez et al., 1990b), we have found that phosphorylation of connexin-32 by protein kinase A and protein kinase C occurs in serine residues, although we have detected trace amounts of phosphothreonine in connexin-32 phosphorylated by protein kinase C (results not shown). Indeed, Se233 has been shown to be the major phosphorylation site catalyzed by protein kinase A. However, Ser233, Ser239, and perhaps other serines are phosphorylated by protein kinase C (Saez et al., 1990b).

SIGNOR-248919

Q5TKA1

Q00526

0

phosphorylation

up-regulates

0.2

In this report, we demonstrate that cyclin e1/cdk3 phosphorylates lin-9 on thr-96. Mutating thr-96 to alanine inhibits activation of cyclins a2 and b1 promoters, whereas a phosphomimetic asp mutant strongly activates their promoters and triggers accelerated entry into g2/m phase in 293t cells.

SIGNOR-204529

P62136

O14965

1

dephosphorylation

down-regulates

0.436

Pp1 is shown to dephosphorylate active stk15 and abolish its activity in vitro.

SIGNOR-110411

Q9UPU5

Q13315

0

phosphorylation

up-regulates activity

0.25

Taken together, these data suggest that the ATM kinase mediated phosphorylation of USP24 is involved in USP24 stabilization/up regulation following UV irradiation.|Taken together, these data suggest that the ATM kinase-mediated phosphorylation of USP24 is involved in USP24 stabilization/up-regulation following UV irradiation.

SIGNOR-280043

P25685

Q8IW41

0

phosphorylation

up-regulates

0.463

Phosphorylation of heat shock protein 40 (hsp40/dnajb1) by mitogen-activated protein kinase-activated protein kinase 5 (mk5/prak). Mk5 phosphorylates hsp40/dnajb1 in vivo at ser-149 or/and ser-151 and ser-171 in the c-terminal domain of hsp40/dnajb1. Mk5 modestly stimulates the atp hydrolyse activity of hsp40/hsp70 complex and enhances the repression of heat shock factor 1 driven transcription by hsp40/dnajb1.

SIGNOR-203464

Q9UKX7

P06493

0

phosphorylation

down-regulates

0.421

These results suggest that both ERK and Cdk1 directly phosphorylate Nup50 at Ser221 in intact cells|Notably, erk phosphorylation of the fg repeat region of nup50 reduced its affinity for importin-beta family proteins, importin-beta and transportin.

SIGNOR-188061

P06493

O00399

1

phosphorylation

up-regulates activity

0.307

Here, we show that the p27/p25 heterodimer undergoes mitotic phosphorylation by cyclin‐dependent kinase 1 (Cdk1) at a single site, p27 Thr186, to generate an anchoring site for polo‐like kinase 1 (Plk1) at kinetochores.

SIGNOR-264777

Q9UQ84

Q13315

0

phosphorylation

up-regulates

0.83

The phosphorylation of exo1 by atm appears to regulate the activity of exo1 following resection, allowing optimal rad51 loading and the completion of hr repair.

SIGNOR-162304

P16333

Q13191

2

binding

up-regulates activity

0.526

Activated Cbl and Cbl-b interacted with Crk-L, Zap-70, Nck, PLC-gamma

SIGNOR-236054

O75084

O96014

2

binding

up-regulates activity

0.712

Consistent with this, xfz7 biochemically and functionally interacts with xwnt11

SIGNOR-78406

P38405

P29275

2

binding

up-regulates activity

0.524

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-256910

Q16665

Q9Y2K7

1

transcriptional regulation

up-regulates quantity by expression

0.2

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-271566

P00751

P00746

0

cleavage

up-regulates activity

0.804

The resulting proconvertase C3bB is subsequently cleaved by factor D (FD), generating the AP C3 convertase C3bBb

SIGNOR-263488

Q9Y566

O95886

0

relocalization

up-regulates activity

0.8

SHANK proteins are ‘master’ scaffolding proteins that tether and organize intermediate scaffolding proteins. They are located at excitatory synapses, where they are crucial for proper synaptic development and function. SAPAP proteins subsequently bind to the PDZ domain of members of the SHANK protein family. SHANK proteins then bind to the actin cytoskeleton and to Homer protein, which in turn interacts with mGluRs. Through these extended links, PSD95, SAPAP, SHANK and Homer proteins form a quaternary complex that brings together mGluR and NMDAR complexes in the PSD (FIG. 3).

SIGNOR-264592

Q9Y2U5

P45985

1

phosphorylation

up-regulates activity

0.612

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-107695

P29460

P29459

2

binding

up-regulates

0.848

However, a proper conformation required for high affinity binding is achieved only when p40 is associated with a p35 subunit or another p40 subunit. When p40 is associated with a p35 subunit, the heterodimer acts as an agonist mediating biologic activity. However, when p40 associates with another p40, the homodimer behaves as an antagonist in vitro

SIGNOR-27619

Q9UM47

P78504

2

binding

up-regulates

0.644

Here we report the first x-ray structure of a functional fragment of a notch ligand, the dsl-egf3 domains of human jagged-1 (j-1dsl-egf3). The structure identifies a highly conserved face of the dsl domain and we show, by functional analysis of drosophila ligand mutants, that this surface is required for both cis- and trans-regulatory interactions with notch.

SIGNOR-179625

Q14247

P27361

0

phosphorylation

up-regulates

0.422

Cortactin is regulated by multiple phosphorylation events, including phosphorylation of s405 and s418 by extracellular regulated kinases (erk)1/2. Erk1/2 phosphorylation of cortactin has emerged as an important positive regulatory modification, enabling cortactin to bind and activate the arp2/3 regulator neuronal wiskott-aldrich syndrome protein (n-wasp), promoting actin polymerization and enhancing tumor cell movement.

SIGNOR-165212

Q92915

Q9Y5Y9

2

binding

down-regulates activity

0.2

Sodium channel fast inactivation is modulated by alpha subunit interaction with a family of cytoplasmic proteins termed fibroblast growth factor homologous factors (FHFs). In this paper, we report that all A-type FHFs exert rapid onset long-term inactivation on Nav1.6 and other sodium channels.

SIGNOR-253441

Q7KZI7

P49841

0

phosphorylation

down-regulates activity

0.349

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-276163

Q5UIP0

Q96T88

0

polyubiquitination

down-regulates activity

0.2

UHRF1 mediates K63-linked polyubiquitination of RIF1, and results in its dissociation from 53BP1 and DSBs thereby facilitating HR initiation.

SIGNOR-277193

P07948

Q92918

1

phosphorylation

up-regulates activity

0.381

BCR ligation induced rapid tyrosine-phosphorylation of HPK1 mainly by Syk and Lyn, resulting in its association with BASH and catalytic activation. Tyr-379 within HPK1 is essential for binding to BASH and thus strongly suggest that the DDDYDDV sequence containing the phosphorylated Tyr-379 is the binding site for the BASH SH2 domain.

SIGNOR-251403

Q9Y5X4

P20393

2

binding

up-regulates

0.399

All four proteins, nr2e3, nr1d1, nrl and crx, could be co-immunoprecipitated from the bovine retinal nuclear extract, suggesting their existence in a multi-protein transcriptional regulatory complex in vivo.

SIGNOR-125661

P68400

Q06413

1

phosphorylation

up-regulates activity

0.333

We show that serine 59 located between the MADS and MEF2 domains of MEF2C is phosphorylated in vivo and can be phosphorylated in vitro by casein kinase-II (CKII). Phosphorylation of this site enhanced the DNA binding and transcriptional activity of MEF2C by increasing its DNA binding activity 5-fold.

SIGNOR-250914

Q92615

P63244

2

binding

up-regulates activity

0.2

Here we show that LARP4B is a cytoplasmic protein that co-sediments with polysomes and accumulates upon stress induction in stress granules. Biochemical studies further show that the protein interacts with two key factors of the translational machinery, namely, the cytoplasmic poly(A) binding protein (PABPC1) and the receptor for activated C Kinase (RACK1). The biochemical and functional data of LARP4B presented in this study suggest a possible mode of action of LARP4B in translation. Assuming that LARP4B interacts with mRNA-associated PABPC1 and RACK1 simultaneously, it may form a bridge between the 3′ end of mRNAs and the initiating ribosome. This process would lead to mRNA circularization, possibly in an analogous way as it has been described for PABPC1 and eIF4G, the scaffold protein of the cap-binding complex.

SIGNOR-260941

P30307

P11309

0

phosphorylation

up-regulates activity

0.348

First, Pim-1 activates the Cdc25C phosphatase directly through phosphorylation, very probably at the N-terminal part of the protein.|We find that phosphorylation by Pim-1 enhances the phosphatase activity of Cdc25C and in transfected cells that are arrested in G2/M by bleomycin, Pim-1 can enhance progression into G1.

SIGNOR-278298

P15927

Q96AP0

2

binding

down-regulates activity

0.2

The current model for how telomeres repress ATR signaling proposes that POT1/TPP1 prevents the binding of RPA to the single-stranded telomeric DNA

SIGNOR-263327

Q13315

Q9NRC8

0

deacetylation

down-regulates activity

0.36

Here, we report that sirtuin 7 (SIRT7)-mediated deacetylation is essential for dephosphorylation and deactivation of ATM. We show that SIRT7, a class III histone deacetylase, interacts with and deacetylates ATM in vitro and in vivo. |Upon DNA damage, ATM is activated via a series of highly organized machineries, including acetylation by the histone acetyltransferase TIP60 at lysine 3016

SIGNOR-275890

O96006

P25398

1

transcriptional regulation

up-regulates quantity by expression

0.2

HDRE-like sequences act as positive regulatory elements for RP gene promoter activities in vivo. | Cotransfection of a plasmid expressing hDREF increased luciferase expression directed by each RP gene promoter more than 30% compared with the values obtained without the hDREF-expressing plasmid.

SIGNOR-266084

P62136

Q02447

1

dephosphorylation

down-regulates activity

0.2

Transcription factors Sp1 and Sp3 activate alpha-ENaC2 transcription through a GC-rich element (Sp1-binding site) in the promoter. Sp1 and Sp3 are essential for alpha-ENaC2 transcription in lung epithelial cells and that dephosphorylation of the Sp transcription factors by PP1 suppresses alpha-ENaC2 expression.

SIGNOR-251953

Q8NEB9

Q96F24

2

binding

down-regulates activity

0.688

NRBF2 S113 and S120 phosphorylation negatively regulates autophagy. Phosphorylated NRBF2 inhibits autophagy, preferentially binds a nonautophagic form of the PtdIns3K complex consisting of PIK3C3-PIK3R4 only, and this NRBF2-associated PtdIns3K complex has low lipid kinase activity. Phosphorylated NRBF2 inhibits autophagy, preferentially binds a nonautophagic form of the PtdIns3K complex consisting of PIK3C3-PIK3R4 only, and this NRBF2-associated PtdIns3K complex has low lipid kinase activity.

SIGNOR-265879

Q9ULX9

P54821

2

binding

down-regulates activity

0.354

Hoxd12 and MHox, that interact with v-/c-Maf, using the phage display method. The Hox proteins also could associate with the other Maf protein family members, MafB, MafK, MafF, and MafG, but not with Jun and Fos. The Hox proteins negatively regulated the DNA binding, transactivation and cell-transforming abilities of Maf.

SIGNOR-221890

P15336

Q99986

0

phosphorylation

up-regulates

0.371

Vrk1 phosphorylates atf2 mainly on thr-73, stabilizing the atf2 protein and increasing its intracellular level.

SIGNOR-124330

O95837

P29274

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-257413

Q96T23

P53350

0

phosphorylation

up-regulates activity

0.352

Moreover, CDK1 phosphorylates RSF1 at Ser1375, and this phosphorylation is necessary for PLK1 recruitment. Subsequently, PLK1 phosphorylates RSF1 at Ser1359, stabilizing PLK1 deposition.

SIGNOR-273590

P31749

Q92900

1

phosphorylation

up-regulates activity

0.257

AKT-Mediated UPF1 Phosphorylation at T151 Promotes UPF1 Helicase Activity

SIGNOR-277597

Q16543

P68400

0

phosphorylation

up-regulates activity

0.397

Phosphorylation of serine 13 is required for the proper function of the Hsp90 co-chaperone, Cdc37. | In this report, we demonstrate that mammalian Cdc37 is phosphorylated on Ser13 in situ in rabbit reticulocyte lysate and in cultured K562 cells and that casein kinase II is capable of quantitatively phosphorylating recombinant Cdc37 at this site.

SIGNOR-250838

O60341

Q9C0F0

2

binding

down-regulates activity

0.266

Here, we showed that ASXL3 interacts with HP1α and LSD1, leading to transcriptional repression.

SIGNOR-266764

P62993

Q9UQC2

2

binding

up-regulates

0.911

The signaling mechanism utilizes an adaptor protein, shc, which binds to a phosphotyrosine residue on the il-2/15r?, Resulting in activation of grb2 and onto akt via the shc-grb2-gab2-pi3k-akt signaling pathway to increase cell proliferation and/or survival

SIGNOR-204969

Q9UQM7

O00631

1

phosphorylation

down-regulates activity

0.241

SLN is also phosphorylated by CaMKII at Thr 5, and a phosphorylation mimic (Thr5Glu mutation) abolishes the inhibitory function of ectopically expressed SLN in adult rat ventricular myocytes| Thr 5 interacts with SERCA Trp 932, and phosphorylation at this site would cause a steric clash that destabilizes binding

SIGNOR-264778

P07949

Q8TEW6

2

binding

up-regulates

0.576

We identified two new family members, dok-4 and dok-5, that can directly associate with y1062 of c-ret dok-4 and dok-5 enhance c-ret-dependent activation of mitogen-activated protein kinase

SIGNOR-109513

P46531

Q96EB6

0

deacetylation

down-regulates

0.423

The acetylation marks on notch1-icd are removed by the deacetylase sirt1, suggesting that both deacetylation of notch1-icd and of histones inhibit notch signaling.

SIGNOR-195333

Q9BRX9

Q02750

2

binding

up-regulates

0.526

Morg1 specifically associates with several components of the erk pathway, including mp1, raf-1, mek, and erk, and stabilizes their assembly into an oligomeric complex.

SIGNOR-124470

P08631

Q13444

1

phosphorylation

up-regulates

0.355

Hck, and to a lesser extent lck, phosphorylated the adam15. Deletion and point mutation analysis of the adam15 cytoplasmic domain confirmed the importance of the proline-rich motifs for grb2 and lck binding and indicated the regulatory nature of tyr(715) and tyr(735). These data demonstrate selective, phosphorylation-dependent interactions of adam15 with src family ptks and grb2, which highlight the potential for integration of adam functions and cellular signaling.

SIGNOR-112919

O95837

Q01726

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-257085

P31751

P56278

2

binding

up-regulates

0.452

Full-length tcl1 and its isoforms bind to akt / in in vitro kinase assays using gsk-3_ as a substrate, we found that the presence of any of the tcl1 family proteins (tcl1, mtcp1, or tcl1b) as gst fusion proteins significantly enhanced akt-induced gsk-3_ phosphorylation

SIGNOR-81674

O00187

Q15485

2

binding

up-regulates activity

0.608

In the lectin pathway, mannose-binding lectin (MBL) and ficolins bind to pathogens and activate MBL-associated serine protease-2 (MASP-2)

SIGNOR-263413

P28482

P22736

1

phosphorylation

up-regulates activity

0.669

NGFI-B is an inducible orphan nuclear receptor that initiates apoptosis. Growth factors such as EGF activate the MAP kinase ERK, whose activity may determine if a cell survives or undergoes apoptosis. EGF stimulation of cells leads to phosphorylation of threonine in NGFI-B. Thr-142 of NGFI-B is comprised in a consensus MAP kinase site and was identified as a preferred substrate for ERK2 (but not ERK1) in vitro.

SIGNOR-249430

Q05925

P55075

1

transcriptional regulation

down-regulates quantity by repression

0.452

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. Our data support the model that Engrailed heterodimerized with Pbx might activate transcription, while Engrailed or Pbx proteins alone might repress transcription

SIGNOR-265776

Q9Y4C1

Q5TEC6

1

demethylation

up-regulates activity

0.2

Using a biochemical assay coupled with chromatography, we have purified a JmjC domain-containing protein, JHDM2A, which specifically demethylates mono- and dimethyl-H3K9.

SIGNOR-276843

O95239

Q13131

0

phosphorylation

up-regulates activity

0.2

We found that the strong direct substrate KIF4A is phosphorylated by AMPK at Ser801.Using in vitro kinase assays, we found that active AMPK and Aurora B phosphorylated KIF4A at Ser801 and Thr799 respectively in a time-dependent manner (Figure 5D). KIF4A is phosphoregulated by AMPK and Aurora B. Although AMPK phosphorylation increased the ATPase activity of KIF4A, Aurora B phosphorylation resulted in a stronger increase (Figure 5I), which might be consistent with the more powerful kinase function of Aurora B during mitosis.

SIGNOR-265991

Q5S007

P61026

1

phosphorylation

down-regulates activity

0.33

To investigate whether the phosphorylation of Rab10 by LRRK2 is direct, we performed an in vitro kinase assay using recombinant components. Notably, we found that both wt and LRRK2-G2019S, but neither kinase inactive D1994A mutant nor small molecule-inhibited LRRK2, efficiently phosphorylated Rab10, proving a direct kinase-substrate relationship (Figure 2C). Furthermore, incubation of Rab10 with LRRK2 followed by tryptic digestion and MS analysis unambiguously identified T73 as the major phosphorylation site (Figure 2—figure supplement 1B)|In pathogenic conditions, in which LRRK2 is hyperactive, RabGTPases have strongly diminished affinities for GDIs.

SIGNOR-261277

Q96BY2

Q9NS23

2

binding

up-regulates activity

0.572

Modulator of apoptosis 1 (MOAP-1) is a BH3-like protein that plays key roles in cell death or apoptosis. It is an integral partner to the tumor suppressor protein, Ras association domain family 1A (RASSF1A), and functions to activate the Bcl-2 family pro-apoptotic protein Bax.

SIGNOR-272914

P53350

P18031

1

phosphorylation

up-regulates activity

0.354

Cdk1-cyclin B1 directly phosphorylates PTP1B at serine 386 in a kinase assay. Recombinant Plk1 phosphorylates PTP1B on serine 286 and 393 in vitro, however, it requires a priming phosphorylation by Cdk1 at serine 386 highlighting a novel co-operation between Cdk1 and Plk1 in the regulation of PTP1B.|Finally, phosphorylation on serine 286 enhanced PTP1B phosphatase activity.

SIGNOR-272990

P49841

Q16539

2

binding

down-regulates

0.29

Here we show that similar to the interaction with traf4 and axin, the kinase domain of mekk4 interacts with the multifunctional serine/threonine kinase gsk3beta. Gsk3beta binding to mekk4 blocks mekk4 dimerization that is required for mekk4 activation, effectively inhibiting mekk4 stimulation of the jnk and p38 mapk pathways

SIGNOR-157544

Q08117

O95343

2

binding

down-regulates activity

0.2

Biochemical and mutational analysis shows that the Six domain of both SIX3 and SIX6 strongly interact with the QD domain of TLE1 and AES. AES abrogates SIX3- and SIX6-induced phenotypes

SIGNOR-234586

Q13177

P12931

0

phosphorylation

up-regulates

0.562

Pak2 became tyrosine phosphorylated in its n-terminal regulatory domain, where y130 was identified as the major phosphoacceptor site. Tyrosine phosphorylation-mediated superactivation of pak2 could be induced by overexpression of different src kinases or by inhibiting cellular tyrosine phosphatases with pervanadate and could be blocked by the src kinase inhibitor pp1 or by mutating the y130 residue.

SIGNOR-92460

P01298

P50391

2

binding

up-regulates

0.652

Human y4 bound human pp family members in i-pyy membrane binding assays with a distinctive rank order (table 1): pp > pyy > npy > npy free acid.

SIGNOR-24230

P49286

P63096

2

binding

up-regulates activity

0.471

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-256707

P49841

P35222

1

phosphorylation

down-regulates activity

0.86

Wnt regulation of beta-catenin degradation is essential for development and carcinogenesis. beta-catenin degradation is initiated upon amino-terminal serine/threonine phosphorylation, which is believed to be performed by glycogen synthase kinase-3 (GSK-3) in complex with tumor suppressor proteins Axin and adnomatous polyposis coli (APC).

SIGNOR-116528

O60524

P51608

2

binding

up-regulates activity

0.2

MeCP2 interacts directly with Prpf3 and Sdccag1|MeCP2’s association with Prpf3, a major component of the spliceosome, supports MeCP2 as having a role in modulating mRNA splicing|Notably, Mecp2308/Y mice, which produce a truncated form of MeCP2 and reproduce many of the classical features of RTT [43], have been shown to have multiple genes that are abnormally spliced in the brain [23]. This suggests the C-terminal portion of MeCP2, which we have identified as the putative Sdccag1 interaction domain, plays a critical role in regulating alternative splicing.

SIGNOR-277692

P53355

P37840

1

phosphorylation

up-regulates quantity

0.27

We demonstrated that DAPK1 directly phosphorylates \u03b1-synuclein at Ser129, and induces the formation of insoluble \u03b1-synuclein aggregates.

SIGNOR-278440

P68400

P05114

1

phosphorylation

down-regulates

0.2

Protein kinases that phosphorylate hmg-14 17 at the major sites have been implicated from previous in vitro studies. Protein kinase c and a similar calcium phospholipid-dependent kinase have been reported to phosphorylate both proteins in vitro, where the phosphorylation of hmg-17 occurs predominantly at ser24 and to a lesser degree at ser28. Phosphorylation of hmg-14 at ser6 by camp- or cgmp-dependent kinases has also been reported. Thus, other kinases may contribute to phosphorylation at ser6 in response to oa. Ser88 and ser98 on hmg-14 are also phosphorylated by casein kinase ii in vitro. we conclude that the correlation we observe reflects a causal relationship, in which phosphorylation somehow facilitates the redistribution of hmg-14 and -17 toward non-nuclear pools.

SIGNOR-76274

P55265

Q9Y243

0

phosphorylation

down-regulates activity

0.2

AKT-dependent phosphorylation of the adenosine deaminases ADAR-1 and -2 inhibits deaminase activity. Coimmunoprecipitation studies and in vitro kinase assays revealed that AKT-1, -2, and -3 interact with both ADAR1p110 and ADAR2 and phosphorylate these RNA editases. Using site-directed mutagenesis of suspected AKT phosphorylation sites, AKT was found to primarily phosphorylate ADAR1p110 and ADAR2 on T738 and T553, respectively

SIGNOR-276191

P17252

P61587

1

phosphorylation

down-regulates activity

0.2

PKCalpha dependent Rnd3 phosphorylation downregulates Rnd3 inhibitory activity and leads to increased signaling through the Rho-ROCK pathway.|We further show that PKC\u03b1 directly phosphorylates Rnd3 in an in vitro kinase assay.

SIGNOR-279557

P55957

Q9Y6C9

0

relocalization

up-regulates

0.303

Mtch2/mimp (mitochondrial carrier homologue 2/met-induced mitochondrial protein), a novel truncated bid (tbid)-interacting protein, is a surface-exposed outer mitochondrial membrane protein that facilitates the recruitment of tbid to mitochondria

SIGNOR-165081

P49841

Q96F46

1

phosphorylation

down-regulates quantity by destabilization

0.2

Glycogen synthase kinase 3 (GSK3) constitutively bound to and phosphorylated IL-17RA at T780, leading to ubiquitination and proteasome-mediated degradation of IL-17RA, thus inhibiting IL-17-mediated inflammation.

SIGNOR-277205

P10398

P12931

0

phosphorylation

up-regulates activity

0.489

A-raf behaves like raf-1, being weakly activated by oncogenic ras more strongly activated by oncogenic src, and these signals synergize to give maximal activation

SIGNOR-236459

P07900

P10275

2

binding

up-regulates activity

0.763

The unliganded AR resides predominately in the cytoplasm as a heteromeric complex with hsp90 and other chaperone proteins. These chaperone proteins maintain AR in a form that is receptive to ligand binding. Regulation of gene expression by androgen-activated AR occurs through receptor nuclear translocation, dimerization, and binding to androgen response elements (AREs) in the DNA of target genes.

SIGNOR-251536

Q9Y4K3

Q9UNE7

0

ubiquitination

down-regulates quantity by destabilization

0.466

CHIP promotes TRAF6 ubiquitination and degradation.|These results suggest that CHIP negatively regulates the stability of TRAF6.

SIGNOR-278670