GleghornLab/Signor_2class · Datasets at Hugging Face

IdA string	IdB string	labels int64	mechanism string	effect string	score float64	sentence string	signor_id string
Q13315	P16104	1	phosphorylation	up-regulates	0.2	H2ax interacts with numerous proteins required for dna damage signaling and repair when phosphorylated on ser-140. Phosphorylation of ser-140 (h2ax139ph) in response to ionizing radiation is mediated by both atm and prkdc. Our data showed that h2ax is phosphorylated by uva-activated jnk.	SIGNOR-160206
Q15139	O96013	1	phosphorylation	up-regulates activity	0.252	When PKD3 was knocked-down using isoform-specific shRNA (PKD3-shRNA), PAK4 activity (judged by its phosphorylation status at the activation loop using the pS474-PAK4 antibody) was decreased	SIGNOR-275930
O15297	P06744	1	dephosphorylation	down-regulates activity	0.24	The WIP1 mediated inhibition of NLK activity markedly decreased the phosphorylation of lymphoid enhancer binding factor 1 (LEF1), enhancing its interaction with beta-catenin.\|Wip1 directly dephosphorylates NLK and increases Wnt activity during germ cell development.	SIGNOR-277155
O95251	P53350	0	phosphorylation	up-regulates	0.503	Here, we show that the interaction between plk1 and hbo1 is mitosis-specific and that plk1 phosphorylates hbo1 on ser-57 in vitro and in vivo. During mitosis, cdk1 phosphorylates hbo1 on thr-85/88, creating a docking site for plk1 to be recruited. Significantly, the overexpression of hbo1 mutated at the plk1 phosphorylation site (s57a) leads to cell-cycle arrest in the g1/s phase, inhibition of chromatin loading of the minichromosome maintenance (mcm) complex, and a reduced dna replication rate.	SIGNOR-160751
P17612	Q15256	1	phosphorylation	down-regulates activity	0.343	The PKA phosphorylation site on PTP-SL was identified as the Ser(231) residue. treatment of COS-7 cells with PKA activators, or overexpression of the Calpha catalytic subunit of PKA, inhibited the cytoplasmic retention of ERK2 and p38alpha by wild-type PTP-SL, but not by a PTP-SL S231A mutant.‚	SIGNOR-250038
Q9Y4C4	O43164	0	ubiquitination	up-regulates activity	0.403	These results suggest that the ubiquitylation of MFHAS1 by praja2 has a vital role in M1 macrophage polarization and promotes the transformation of M2 macrophages to M1 macrophages through both the JNK and p38 pathways.	SIGNOR-278559
O95983	O14965	0	phosphorylation	up-regulates	0.286	These results suggest that the biochemical changes of mbd3 may be intimately related to the targeting of mbd3 to centrosomes. aurora-a phosphorylates mbd3	SIGNOR-93693
O14920	Q92905	1	phosphorylation	down-regulates activity	0.33	Overexpression of IKKalpha or IKKbeta leads to enhanced phosphorylation of CSN5, the catalytic subunit for CSN deneddylase activity. Mutational analyses have revealed that phosphorylation at serine 201 and threonine 205 of CSN5 impairs CSN-mediated deneddylation activity in vitro.	SIGNOR-275519
Q99942	Q9Y4P1	1	ubiquitination	down-regulates quantity by destabilization	0.405	These results substantiate the notion that RNF5 negatively regulates ATG4B availability with concomitant effect on LC3 processing and autophagy under normal growth conditions.\|These results suggest that RNF5 directly induces ATG4B ubiquitination.	SIGNOR-278664
P54793	Q96SB4	0	phosphorylation	up-regulates activity	0.2	Phosphorylation by SRPK1 drives ASF from the cytosol to the nucleus.\|Phosphorylation of ASF by SR protein kinase 1 (SRPK1) in the cytosol results in ASF relocation to the nucleus, whereas phosphorylation of ASF by Clk and Sty releases ASF from speckles and recruits it into nascent transcripts where ASF regulates alternative splicing.	SIGNOR-279765
P23458	P42224	1	phosphorylation	up-regulates activity	0.79	The central event in cytokine_dependent transcriptional regulation is phosphorylation of STATs on a single tyrosine residue at their C_terminus (Darnell, 1997b). The reaction is catalyzed by cytokine receptor_associated tyrosine kinases of the Janus type (Jak) at the cell membrane and triggers the homo_ and heterodimerization of STAT molecules via reciprocal phosphotyrosineSH2 domain interactions	SIGNOR-236373
P19022	P12931	0	phosphorylation	down-regulates	0.397	Src-mediated phosphorylation of the n-cadherin cytoplasmic domain results in a significant reduction in beta-catenin bindingbeta-catenin dissociates from n-cadherin and redistributes to the nucleus of transmigrating melanoma cells to activate gene transcription.Because there were only four tyrosine residues (y852, y860, y884, and y886) in this peptide, all of them were phosphorylated.	SIGNOR-143242
Q04759	Q00613	1	phosphorylation	up-regulates	0.349	At the same time, ea causes pkc?-Mediated phosphorylation and activation of the transcription factor heat shock factor 1, an inducer of glucose dependence.	SIGNOR-200576
P17612	O43566	1	phosphorylation	up-regulates activity	0.338	RGS14 is phosphorylated in vitro at Ser258 and Thr494 by PKA. cAMP-induced phosphorylation as an important modulator of RGS14 function since phosphorylation could enhance RGS14 binding to Galpha(i)-GDP	SIGNOR-250045
Q86UC2	P28482	0	phosphorylation	up-regulates activity	0.2	ERK1/2 phosphorylate RSPH3. the extent of radiolabeled phosphate incorporation into RSPH3 T286A was much less than that into wild-type RSPH3, suggesting that threonine 286 is the major ERK1/2 phosphorylation site in cells. ERK2 also phosphorylates RSPH3 on threonine 243 to a lesser extent. Phosphorylation of the double mutant T243V/T286A RSPH3 was no more than 20% that of wild-type RSPH3 (Fig. 4, C and D). inhibiting ERK1/2 activity appears to negatively regulate the AKAP function of RSPH3.	SIGNOR-262839
P68400	P04004	1	phosphorylation	up-regulates activity	0.328	Therefore, we expressed Vn in a baculovirus system and show (i) that the CKII phosphorylation of wt-Vn enhances the adhesion of bovine aorta endothelial cells; (ii) that the double mutant T50E/T57E (in which the neutral Thr residues are replaced by the negatively charged Glu residues considered analogs of Thr-P) has a significantly enhanced capacity to promote cell adhesion and to accelerate cell spreading when compared with either wild-type Vn or to the neutral T50A/T57A mutant	SIGNOR-250971
P50616	P28482	0	phosphorylation	down-regulates	0.354	Tob is rapidly phosphorylated at ser 152, ser 154, and ser 164 by erk1 and erk2 upon growth-factor stimulation.	SIGNOR-88720
P43351	P00519	0	phosphorylation	up-regulates activity	0.685	C-Abl tyrosine kinase associates with and phosphorylates Rad52 on tyrosine 104. he functional significance of c-Abl-dependent phosphorylation of Rad52 is underscored by our findings that cells that express the phosphorylation-resistant Rad52 mutant, in which tyrosine 104 is replaced by phenylalanine, exhibit compromised nuclear foci formation in response to IR.	SIGNOR-251435
P29474	P62140	0	dephosphorylation	up-regulates activity	0.2	The increase in eNOS activity coincided with specific dephosphorylation of eNOS-Thr495, known to enhance eNOS activity. Inhibition of protein phosphatase 1 (PP1) by calyculin A, tautomycetin, or siRNA against PP1 reversed NF-induced eNOS-Thr495 dephosphorylation	SIGNOR-248574
Q05513	P31946	1	phosphorylation	down-regulates activity	0.368	Our results with the 14-3-3 mutants indirectly imply a new phosphorylation site, 130Ser (and to a lesser extent 141Thr), in 14-3-3b that regulates the association}dissociation of 14-3-3b and PKC-f.	SIGNOR-249035
P04626	Q16827	0	dephosphorylation	down-regulates quantity by destabilization	0.403	In this study, our co-immunoprecipitation experiment along with the results derived from in vivo , cultured cells and clinical specimen confirm that PTPRO dephosphorylates ERBB2 at Y1248.\|PTPRO overexpression remarkably accelerated degradation of ERBB2 (XREF_FIG).	SIGNOR-276979
Q9HCE7	Q9P2Y5	1	ubiquitination	down-regulates activity	0.2	Here we report that UVRAG is ubiquitinated by SMURF1 at lysine residues 517 and 559, which decreases the association of UVRAG with RUBCN and promotes autophagosome maturation. However, the deubiquitinase ZRANB1 specifically cleaves SMURF1-induced K29 and K33-linked polyubiquitin chains from UVRAG, thereby increasing the binding of UVRAG to RUBCN and inhibiting autophagy flux.	SIGNOR-273652
O14770	P12830	1	transcriptional regulation	up-regulates quantity by expression	0.2	We show that the Pbx1 and Meis2 homeodomain proteins interact with Klf4 and can be recruited to DNA elements comprising a Klf4 site or G C box, with adjacent Meis and Pbx sites. Meis2d and Pbx1a activate expression of p15(Ink4a) and E-cadherin, dependent on the Meis2d transcriptional activation domain. We suggest a model in which genes with Klf4 sites can be cooperatively activated by Meis2/Pbx1 and Klf4, dependent primarily on recruitment by Klf4.	SIGNOR-267242
P27361	Q9HAV4	1	phosphorylation	down-regulates activity	0.312	Here we show that ERK suppresses pre-miRNA export from the nucleus through phosphorylation of exportin-5 (XPO5) at T345/S416/S497. After phosphorylation by ERK, conformation of XPO5 is altered by prolyl isomerase Pin1, resulting in reduction of pre-miRNA loading.	SIGNOR-262985
Q9BYT3	Q5JQC9	1	phosphorylation	up-regulates quantity by stabilization	0.2	Differential phosphoproteomic analysis and in vitro kinase assay identified novel phosphorylation substrates of STK33, fibrous sheath components AKAP3 and AKAP4, whose expression levels decreased in testis after deletion of Stk33.	SIGNOR-272956
Q16695	P29375	0	demethylation	up-regulates activity	0.2	KDM5 subfamily is capable of removing tri‐ and di‐ methyl marks from lysine 4 on histone H3 (H3K4). Depending on the methylation site, its effect on transcription can be either activating or repressing.	SIGNOR-264300
P28370	Q9NRC1	1	transcriptional regulation	down-regulates quantity by repression	0.2	Human SWI/SNF-associated PRMT5 methylates histone H3 arginine 8 and negatively regulates expression of ST7 and NM23 tumor suppressor genes.	SIGNOR-268991
P42574	P06396	1	cleavage	down-regulates	0.639	Caspase-3 mediates cleavage of gelsolin, generating a fragment that severs actin filaments in an unregulated fashion. The cleavage of gelsolin causes cells to round up, detach and undergo nuclear fragmentation.	SIGNOR-51652
Q16828	Q12778	1	dephosphorylation	up-regulates activity	0.428	It has been previously demonstrated that MKP-3 dephosphorylates FOXO1 on Ser256 and promotes nuclear translocation of FOXO1 , which subsequentially binds to the promoters of gluconeogenic genes and turns on the gluconeogenic program.\|We also reported that MKP-3 can activate FOXO1 by at least dephosphorylating Ser 256, one of the Akt phosphorylation sites xref .	SIGNOR-276983
P31749	Q5VWQ8	1	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
Q16539	Q8IW41	1	phosphorylation	up-regulates activity	0.637	In hela cells, prak was activated in response to cellular stress and proinflammatory cytokines. Prak activity was regulated by p38alpha and p38beta both in vitro and in vivo and thr182 was shown to be the regulatory phosphorylation site.	SIGNOR-58135
P29353	P06239	0	phosphorylation	up-regulates activity	0.744	We show that during TCR signaling, the tyrosines Y239, Y240 and Y317 of Shc are the primary sites of tyrosine phosphorylation. CD4/Lck-dependent tyrosine phosphorylation on Shc was markedly diminished when Y317 was mutated, suggesting a preference of Lck for the Y317 site. tyrosine phosphorylation of Shc may play a key role in T lymphocyte proliferation via interaction of phosphorylated Shc with downstream molecules involved in activation of Ras and Myc proteins	SIGNOR-251388
P31749	O75925	0	sumoylation	up-regulates activity	0.378	Although multiple sites on Akt could be SUMOylated, K276 was identified as a major SUMO acceptor site. K276R or E278A mutation reduced SUMOylation of Akt but had little effect on its ubiquitination. Strikingly, these mutations also completely abolished Akt kinase activity. In support of these results, we found that expression of PIAS1 and SUMO1 increased Akt activity, whereas expression of SENP1 reduced Akt1 activity.	SIGNOR-252735
P06493	P0C1S8	0	phosphorylation	down-regulates activity	0.587	Recombinant Wee1B effectively phosphorylated cyclin B-associated Cdk1 on tyrosine-15, resulting in an inactivation of the kinase activity of Cdk1.	SIGNOR-279134
Q15208	Q9BXF6	1	phosphorylation	up-regulates activity	0.2	We identified 5 potential NDR1 substrates in the mouse brain and chose two for functional validation. We show that one NDR1 substrate is another kinase, AP-2 associated kinase-1 (AAK1) which regulates dendritic branching as a result of NDR1 phosphorylation. Another substrate is the Rab8 guanine nucleotide exchange factor (GEF) Rabin8 (a Sec2p homolog) which we find is involved in spine synapse formation.	SIGNOR-263035
P17612	O75899	1	phosphorylation	down-regulates activity	0.2	Here we show that the functional coupling of GABA(B)R1/GABA(B)R2 receptors to inwardly rectifying K(+) channels rapidly desensitizes. This effect is alleviated after direct phosphorylation of a single serine residue (Ser892) in the cytoplasmic tail of GABA(B)R2 by cyclic AMP (cAMP)-dependent protein kinase (PKA).	SIGNOR-263150
Q14164	Q13370	1	phosphorylation	up-regulates activity	0.2	While IKK\u03b5 phosphorylates and activates PDE3B to induce catecholamine resistance, TBK1 inhibits AMPK activity to reduce catabolism via this pathway.	SIGNOR-278517
O75177	Q92793	1	relocalization	up-regulates	0.397	The calcium-responsive transactivator recruits creb binding protein to nuclear bodies.	SIGNOR-129926
O95863	P31947	0	relocalization	down-regulates	0.2	Pkd1 phosphorylates ser(11) (s11) on transcription factor snail, a master emt regulator and repressor of e-cadherin expression, triggering nuclear export of snail via 14-3-3_ binding	SIGNOR-168540
Q05655	P31749	0	phosphorylation	up-regulates activity	0.26	Of note, the amino acid sequence adjacent to Ser204 phosphorylation site matches the minimal AKT substrate motif (RxxpS) suggesting that AKT1 could potentially directly regulate PRKCD through phosphorylation.\|This integrative analysis allowed us to confirm that the enrichment of PRKCD centered network is likely the result of elevated phosphorylation of PRKCD by AKT1.	SIGNOR-280175
P45985	O43318	0	phosphorylation	up-regulates activity	0.711	Mitogen-activated protein kinase kinase 4 (mkk4)/stress-activated protein kinase/extracellular signal-regulated kinase (sek1), a dual-specificity kinase that phosphorylates and activates jnk, synergized with tak1 in activating jnk.Taken together, these results identify TAK1 as a regulator in the HPK1 --> TAK1 --> MKK4/SEK1 --> JNK kinase cascade and indicate the involvement of JNK in the TGF-beta signaling pathway.	SIGNOR-50618
P14921	P49841	0	phosphorylation	up-regulates quantity by stabilization	0.2	Here, we show that ETS1 forms a complex with glycogen synthase kinase-3β (GSK3β). Specifically, GSK3β-mediated phosphorylation of ETS1 at threonine 265 and serine 269 promoted protein stability, induced the transcriptional activation of matrix metalloproteinase (MMP)-9, and increased cell migration.	SIGNOR-277560
P35222	P35790	0	phosphorylation	down-regulates activity	0.286	The data suggest that CKI phosphorylates and destabilizes the beta-catenin degradation complex, likely through the dissociation of PP2A, providing a mechanism by which CKI stabilizes beta-catenin and propagates the Wnt signal.	SIGNOR-279161
P24844	O14578	0	phosphorylation	up-regulates activity	0.561	Activation of the catalytic ATPase domain residing in the N‐terminus of the heavy chain relies on the reversible phosphorylation of the associated MLC on Ser19 (monophosphorylation), or in some cases on both Thr18 and Ser19 (diphosphorylation)\|We detected Ser19 of MLC as the common phosphorylation site for the catalytic domains of MRCK_/_, ROK_, MLCK and PAK_, but only ROK_ and CRIK are able to phosphorylate both Thr18 and Ser19 residues causing diphosphorylation.	SIGNOR-260306
P07333	Q00341	0	transcriptional regulation	down-regulates quantity by repression	0.342	Vigilin (Vgl1) is essential for heterochromatin formation, chromosome segregation, and mRNA stability and is associated with autism spectrum disorders and cancer: vigilin, for example, can suppress proto-oncogene c-fms expression in breast cancer.	SIGNOR-266696
P49792	O60260	0	ubiquitination	down-regulates quantity by destabilization	0.2	Our findings suggested that the intracellular levels of RanBP2 and its functional activity may be modulated by Parkin-mediated ubiquitination and proteasomal pathways. Furthermore, Parkin controls the intracellular levels of sumoylated HDAC4, as a result of the ubiquitination and degradation of RanBP2.	SIGNOR-259116
P01008	P00740	1	cleavage	down-regulates activity	0.897	Antithrombin (AT), a member of the serine protease inhibitor (SERPIN) superfamily, is a major circulating inhibitor of blood coagulation proteases such as factor (F) IIa (known as thrombin), FXa and, to a lesser extent, FIXa, FXIa and FXIIa. SERPINC1, which encodes AT in humans, is located on chromosome 1q25.1	SIGNOR-264140
Q99661	P53350	0	phosphorylation	up-regulates activity	0.812	Active PLK1, in turn, phosphorylates MCAK at Ser715 which promotes its microtubule depolymerase activity essential for faithful chromosome segregation.	SIGNOR-276931
P51809	P12931	0	phosphorylation	up-regulates activity	0.286	We found that TI-VAMP is phosphorylated in vitro by c-Src kinase on tyrosine 45 of the Longin domain.Mimicking tyrosine 45 phosphorylation activates both t-SNARE binding and exocytosis of TI-VAMP.	SIGNOR-273819
P11940	Q9UHC7	0	ubiquitination	up-regulates activity	0.35	We show that MKRN1 directly binds to the cytoplasmic poly(A)-binding protein (PABPC1) and associates with polysomes. MKRN1 is positioned upstream of poly(A) tails in mRNAs in a PABPC1-dependent manner. Ubiquitin remnant profiling and in vitro ubiquitylation assays uncover PABPC1 and ribosomal protein RPS10 as direct ubiquitylation substrates of MKRN1.Our data show that MKRN1 associates with polysomes and ubiquitylates RPS10, indicating a role in translational control. We hypothesize that ribosomes encountering the MKRN1-PABPC1 complex are stalled, possibly via ubiquitylation of RPS10 on K107 and other MKRN1 substrates.	SIGNOR-272215
Q9HC98	O14757	0	phosphorylation	down-regulates activity	0.237	Nek6 is also directly phosphorylated by the checkpoint kinases Chk1 and Chk2 in vitro .	SIGNOR-279403
P40763	P23470	0	dephosphorylation	up-regulates activity	0.259	PTPRG activation by the P1-WD peptide affected the tyrosine phosphorylation of several signaling molecules. Data analysis identified 31 molecules whose phosphorylation was modified in a statistically significant manner (Table I). inhibition of ABL1, BMX, BTK, DAB1, ITGB1, JAK2, KDR, KIT, LIMK1, MET, PDGFRB, SHC1, and VCL correlates with tyrosine dephosphorylation. In contrast, SRC inhibition correlates with hyperphosphorylation of the inhibitory Tyr530 residue and with dephosphorylation of the activatory Tyr419. Moreover, CDK2 and CTTN inhibition correlates with a hyperphosphorylation of the inhibitory Tyr15 and Tyr470, respectively. In contrast, a subgroup of 13 proteins, including BLNK, DOK2, ERBB2, GRIN2B, INSR, PDGFRA, PRKCD, PXN, STAT1, STAT2, STAT3, STAT5A, and ZAP70, appears to be activated by PTPRG activity.	SIGNOR-254729
P27361	P53805	1	phosphorylation	up-regulates activity	0.38	Consensus phosphorylation sites for p42/44 MAPK and GSK-3 are present in the SP repeat of MCIP1 at serine 112 and serine 108, respectively \|Several endogenous proteins are capable of inhibiting the catalytic activity of calcineurin. Modulatory calcineurin interacting protein 1 (MCIP1) is unique among these proteins on the basis of its pattern of expression and its function in a negative feedback loop to regulate calcineurin activity. Here we show that MCIP1 can be phosphorylated by MAPK and glycogen synthase kinase-3 and that phosphorylated MCIP1 is a substrate for calcineurin.	SIGNOR-249478
P55087	P19784	0	phosphorylation	down-regulates activity	0.338	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. \| 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-250976
Q96N67	P60953	1	guanine nucleotide exchange factor	up-regulates activity	0.739	As a GEF, Dock7 exchanges GDP for GTP on Cdc42 and Rac1, causing their activation, followed by activation of downstream effectors, including the dephosphorylation (activation) of cofilin, a key regulator of actin turnover.	SIGNOR-261886
Q00987	Q9Y5A7	1	ubiquitination	up-regulates activity	0.276	Our results rather suggest that Mdm2 specifically ubiquitinates NUB1 on lysine 159 and that this modification is required for NUB1 functions.\|We conclude that Mdm2 acts as a positive regulator of NUB1 function, by modulating NUB1 ubiquitination on lysine 159.	SIGNOR-278556
Q16513	Q15118	0	phosphorylation	up-regulates activity	0.338	PDK1 phosphorylates the PRKs at their conserved activation loop threonines (Thr-774 and Thr-816 for PRK1 and PRK2, respectively) both in vitro and in vivo.	SIGNOR-250265
P10636-2	P27361	0	phosphorylation	down-regulates activity	0.501	We have studied the relationship between the phosphorylation oftau by several kinases (MARK, PKA, MAPK, GSK3) and its assembly into PHFs. By contrast, MARK and PKA phosphorylate several sites within the repeats (notably theKXGS motifs including Ser262, Ser324, and Ser356, plus Ser320); in addition PKA phosphorylates somesites in the flanking domains, notably Ser214. This type of phosphorylation strongly reduces tau’s affinityfor microtubules, and at the same time inhibits tau’s assembly into PHFs.	SIGNOR-275434
P24928	Q9GZU7	0	dephosphorylation	up-regulates activity	0.431	Phosphorylation and dephosphorylation of the C-terminal domain (CTD) of RNA polymerase II (Pol II) represent a critical regulatory checkpoint for transcription. Transcription initiation requires Fcp1/Scp1-mediated dephosphorylation of phospho-CTD. \| This combined structure-function analysis discloses the residues in Scp1 involved in CTD binding and its preferential dephosphorylation of P.Ser5 of the CTD heptad repeat.	SIGNOR-248785
P00519	Q92466	1	phosphorylation	down-regulates	0.458	C-abl might act as a negative regulator of uv-ddb by phosphorylating ddb2	SIGNOR-90446
Q70Z35	P60953	1	guanine nucleotide exchange factor	up-regulates activity	0.423	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-260572
P31751	P35222	1	phosphorylation	up-regulates	0.57	Phosphorylation of beta-catenin by akt promotes beta-catenin transcriptional activitywe have demonstrated that akt phosphorylates beta-catenin at ser552 in vitro and in vivo.	SIGNOR-152958
P24941	P04637	1	phosphorylation	up-regulates activity	0.871	The N-terminus of E2F1 can interact directly with a region towards the C-terminus of p53, resulting in increased nuclear retention of p53 and p53-mediated transcription and apoptosis. This is inhibited by competition between p53 and cyclin A at the binding site within E2F19,10. The interaction between p53 and E2F1 is enhanced by phosphorylation of p53 on Ser315, a residue within the E2F1 binding region that is phosphorylated by cell cycle kinases such as cdk1, cdk2, cdk9 and Aurora kinase A	SIGNOR-119379
Q13535	Q03164	1	phosphorylation	up-regulates	0.281	Mll is phosphorylated at serine 516 by atr in response to genotoxic stress in the s phase, which disrupts its interaction with, and hence its degradation by, the scf(skp2) e3 ligase, leading to its accumulation.	SIGNOR-25151
P17252	P30622	1	phosphorylation	down-regulates	0.2	Furthermore, by using phosphoproteomic analysis, we determined that s309 and s311 of clip-170 are phosphorylated in cells and mapped s311 as a protein kinase a (pka) phosphorylation site.phosphorylation of s311 may be critical for establishing the ?folded Back? Conformation of clip-170clip-170 open and folded back conformations represent active and inactive modes of the protein, respectively	SIGNOR-165857
Q9P0L2	Q13470	1	phosphorylation	down-regulates activity	0.2	We also discover a MARK-mediated phosphorylation on TNK1 at S502 that promotes an interaction between TNK1 and 14-3-3, which sequesters TNK1 and inhibits its kinase activity.Phosphorylation of TNK1 at S502 within the proline rich domain is required for TNK1 binding to 14-3-3.MARKs mediate phosphorylation at S502 and 14-3-3 binding to TNK1, which restrains the movement of TNK1 into heavy membrane-associated clusters.	SIGNOR-273866
P35637	O75534	1	post transcriptional regulation	up-regulates quantity by stabilization	0.2	These findings demonstrated that LINC00205 facilitates malignant phenotypes in LC by recruiting FUS to stabilize CSDE1, suggesting LINC00205 as a potential target for LC therapy.\|Subsequent RIP assay con- firmed such prediction, as CSDE1 mRNA was evidently precipitated by anti-FUS (Figure 3A).	SIGNOR-262110
P68400	Q9Y6K1	1	phosphorylation	down-regulates activity	0.2	This modulation can be directly attributed to CK2-mediated phosphorylation of Dnmt3a. We also find that CK2-mediated phosphorylation is required for localization of Dnmt3a to heterochromatin.	SIGNOR-276650
Q92997	Q8IZQ1	0	relocalization	down-regulates quantity by destabilization	0.251	Our data taken together with the known role of ALFY in autophagy, demonstrate specific targeting and autophagy-mediated removal of DVL3 by hALFY.	SIGNOR-266793
P23352	Q14938	0	transcriptional regulation	down-regulates quantity	0.2	By integrating transcriptomic profiling (RNA-seq) of Nfia- and Nfix-deficient GNPs with epigenomic profiling (ChIP-seq against NFIA, NFIB and NFIX, and DNase I hypersensitivity assays), we reveal that these transcription factors share a large set of potential transcriptional targets, suggestive of complementary roles for these NFI family members in promoting neural development	SIGNOR-268884
P05412	O94925	1	transcriptional regulation	up-regulates quantity by expression	0.35	The transcription factor c-Jun can directly bind to the GLS gene promoter and enhance expression	SIGNOR-268035
P63241	P49366	0	post translational modification	up-regulates activity	0.933	Deoxyhypusine synthase (DHPS) utilizes spermidine and NAD as cofactors to incorporate a hypusine modification into the eukaryotic translation initiation factor 5A (eIF5A). Hypusine is essential for eIF5A activation, which, in turn, plays a key role in regulating protein translation of selected mRNA that are associated with the synthesis of oncoproteins, thereby enhancing tumor cell proliferation.	SIGNOR-266374
P49840	P17655	0	cleavage	up-regulates activity	0.2	Thus, it has been shown that calpain cleaves the inhibitory domain of GSK3 generating two fragments of 40 and 30 kDa. This cleavage enhanced activity of the kinase	SIGNOR-251612
Q9Y2R2	P06239	1	dephosphorylation	down-regulates activity	0.751	In vitro experiments with purified recombinant proteins demonstrated that PTPN22-D195A/C227S interacted directly with activated Lck, Zap70, and TCRzeta, confirming the initial substrate trap results. Native PTPN22 dephosphorylated Lck and Zap70 at their activating tyrosine residues Tyr-394 and Tyr-493, respectively, but not at the regulatory tyrosines Tyr-505 (Lck) or Tyr-319 (Zap70). Native PTPN22 also dephosphorylated TCRzeta in vitro and in cells, and its substrate trap variant co-immunoprecipitated with TCRzeta when both were coexpressed in 293T cells, establishing TCRzeta as a direct substrate of PTPN22.	SIGNOR-248836
Q6XZF7	P60953	1	guanine nucleotide exchange factor	up-regulates activity	0.572	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-260547
Q13480	P06213	0	phosphorylation	up-regulates activity	0.502	HGab-1 was phosphorylated by IR at eight tyrosine residues (Y242, Y285, Y373, Y447, Y472, Y619, Y657, and Y689). t Gab-1 is the major binding partner of PI-3 kinase in 3T3L1 cells when stimulated with insulin	SIGNOR-251310
Q8TCU6	P62136	0	dephosphorylation	up-regulates activity	0.2	MS analysis of wild-type P-Rex1 and a PP1\u03b1-binding-deficient mutant revealed that endogenous PP1\u03b1 dephosphorylates P-Rex1 on at least three residues, Ser834, Ser1001 and Ser1165.\|The phosphatase activity of PP1\u03b1 is required for P-Rex1 activation.	SIGNOR-277024
P12931	P23528	1	phosphorylation	down-regulates	0.553	Tyrosine phosphorylation of cofilin at y68 by v-src leads to its degradation through ubiquitin-proteasome pathway	SIGNOR-188352
Q969Q1	Q08209	1	ubiquitination	down-regulates quantity	0.26	First, downregulation of MuRF1 significantly attenuates degradation of CnA in cardiomyocytes in vitro, indicating that endogenous MuRF1 negatively regulates the stability of CnA in a cell-autonomous manner.\|Furthermore, MuRF1 directly ubiquitinated CnA in vitro.\|These results suggest that MuRF1 directly polyubiquitinates CnA.	SIGNOR-278736
P51452	P27361	1	dephosphorylation	down-regulates activity	0.665	The activation of the mapk activity requires the dual phosphorylation of the ser/thr and tyr residues in the txy kinase activation motif (1113), and deactivation occurs through the action of either ser/thr protein phosphatase (14), protein-tyrosine phosphatase (ptp) (14, 15), or dual specificity phosphatases	SIGNOR-103035
Q5TCZ1	P12931	0	phosphorylation	up-regulates activity	0.64	First, we observed that the co-expression of both activated Src and wild-type Tks5 stimulated gelatin degradation beyond that of Tks5 overexpression alone ( ).\|In melanoma cells Src dependent phosphorylation of Tks5 at tyrosine 557 is important for binding to Nck, for Nck recruitment to invadopodia, and for invadopodia associated matrix degradation activity .	SIGNOR-280134
P41236	P19784	0	phosphorylation	up-regulates activity	0.307	Recombinant wild-type I-2 and the Ala-120/121 mutant were phosphorylated synergistically by GSK-3 and casein kinase II. The Thr-72 and Ser-86 mutants, however, did not undergo this synergistic phosphorylation. Our studies indicate that Thr-72 is the only GSK-3 site and that Ser-86 is the casein kinase II site required for the potentiation of GSK-3 action.	SIGNOR-251021
O15297	Q12888	1	dephosphorylation	down-regulates activity	0.392	In addition, WIP1 dephosphorylates 53BP1 at Threonine 543 that was previously implicated in mediating interaction with RIF1.	SIGNOR-277046
P29323	O94989	1	phosphorylation	down-regulates quantity by destabilization	0.485	We have identified a RhoA guanine nucleotide exchange factor, Ephexin5, which negatively regulates excitatory synapse development until EphrinB binding to the EphB receptor tyrosine kinase triggers Ephexin5 phosphorylation, ubiquitination, and degradation. EphB2 mediates phosphorylation of Ephexin5 at tyrosine-361	SIGNOR-262864
P49841	P13051	1	phosphorylation	down-regulates quantity by destabilization	0.2	Here we show that glycogen synthase kinase 3 (GSK-3) interacts with and phosphorylates UNG2 at Thr60 and that Thr60 phosphorylation requires a Ser64 priming phosphorylation event.\|phosphorylation of Thr60 and Ser64 creates a cyclin E/c-Myc-like phosphodegron that promotes polyubiquitylation and proteasome-mediated degradation	SIGNOR-264885
P36956	P17612	0	phosphorylation	down-regulates	0.2	Sterol regulatory element-binding protein 1 is negatively modulated by pka phosphorylation. ser338 of srebp-1a and ser314 of srebp-1c are pka phosphorylation sites.	SIGNOR-143392
O95376	Q96P20	1	ubiquitination	up-regulates activity	0.444	ARIH2 can ubiquitinate NLRP3 via the NACHT domain of NLRP3, and the RING2 domain of ARIH2 is required for NLRP3 ubiquitination 65.\|Overexpression of ARIH2 promotes NLRP3 ubiquitination and inhibits NLRP3 inflammasome activation 65.	SIGNOR-278686
Q9HCE7	O95947	1	polyubiquitination	down-regulates quantity by destabilization	0.257	Smad6 mediates Tbx6 ubiquitination and proteasomal degradation. Tbx6 forms a ternary complex with Smad6 and Smurf1. Here, we report that Tbx6 interacts directly with Smad6, an inhibitory Smad that antagonizes the BMP signal. This interaction is mediated through the Mad homology 2 (MH2) domain of Smad6 and residues 90-180 of Tbx6. We demonstrate that Smad6 facilitates the degradation of Tbx6 protein through recruitment of Smurf1, a ubiquitin E3 ligase.	SIGNOR-272784
P45452	P02675	1	cleavage	down-regulates quantity by destabilization	0.2	Matrix metalloproteinases collagenase-2, macrophage elastase, collagenase-3, and membrane type 1-matrix metalloproteinase impair clotting by degradation of fibrinogen and factor XII\| We have now investigated the role of collagenase-2 (MMP-8), macrophage elastase (MMP-12), collagenase-3 (MMP-13), and membrane type 1-matrix metalloproteinase (MT1-MMP, MMP-14) in the degradation of fibrinogen and Factor XII of the plasma clotting system.\|MMP-13 27YVATRDN g-chain\| 20ADSGEGD a-chain\| 124RNSVDXLNXN b-chain\| 442LRTGKEKV a-chain	SIGNOR-263615
Q9Y243	P16220	1	phosphorylation	up-regulates	0.496	When overexpressed in serum-stimulated cells, akt/pkb potently induced ser-133 phosphorylation of creb and promoted recruitment of cbp.	SIGNOR-62257
Q96KS0	Q16665	1	hydroxylation	down-regulates quantity by destabilization	0.856	There are three EglN family members in humans and mice (EglN1, EglN2, and EglN3). Their enzymatic activity requires oxygen, ascorbic acid, iron, and α-ketoglutarate (α-KG). Under hypoxic conditions, EglNs lose their activity and fail to hydroxylate HIFα, which leads to HIFα stabilization	SIGNOR-261999
Q13153	P62714	0	dephosphorylation	down-regulates activity	0.2	Both sites were dephosphorylated with the same kinetics; the anti-Ser(P)198 antibody was subsequently used as it exhibited lower background staining. Direct comparison of PP2Cα with purified PP1 and PP2A lead us to conclude that at the same molar ratio PP2Cα was the most efficient in dephosphorylating PAK1 (Fig. 1D). In this case we monitored two autophosphorylation sites in the Pak1 N-terminal regulatory region (Ser57 and Ser198/203) using phosphospecific antibodies: both sites showed the same kinetics of inactivation.	SIGNOR-248600
Q13586	Q9Y478	0	phosphorylation	down-regulates activity	0.2	STIM1 is a novel exercise‐regulated AMPK substrate. Phosphorylation of STIM1 by AMPK suppresses SOCE	SIGNOR-277298
P41145	P01189	0	chemical activation	up-regulates activity	0.652	Accordingly, for the OTDP, the binding affinity and activity of a large number of opiate compounds have been tested at μ-, δ-, and κ-opiate receptors. Binding studies were originally conducted in guinea pig brain membranes, and subsequent studies have been carried out in CHO cells transfected with human receptors. Table 7 shows a biochemical method for determining activity and potency of opioid compounds, stimulation of [35S]GTPγS binding in membranes from cells transfected with human μ, δ, or κ receptors.	SIGNOR-258410
O75175	Q9Y6Q6	1	transcriptional regulation	down-regulates quantity by repression	0.2	Our results reveal that CNOT3 is a critical regulator of bone mass acting on bone resorption through posttranscriptional down-regulation of RANK mRNA stability, at least in part, even in aging-induced osteoporosis.	SIGNOR-261572
Q99418	P62330	1	guanine nucleotide exchange factor	up-regulates activity	0.887	Effects of ARNO upon Axonogenesis Are Mediated by Downstream Activation of ARF6. ARNO/ARF6 signaling pathways that could modulate actin reorganization in the axonal growth cone. ARNO stimulates GTP exchange on ARF6, thereby increasing the amount of active ARF6.	SIGNOR-264910
P28482	Q15831	1	phosphorylation	down-regulates activity	0.402	Directly and/or through the activation of p90RSK, ERK phosphorylates LKB-1 at Ser325 and Ser428. The phosphorylation of LKB-1 causes the dissociation of LKB-1 from AMPK, resulting in the impaired activation of AMPK.	SIGNOR-209876
Q01813	O60502	0	deglycosylation	up-regulates activity	0.2	Our previous investigation on O-GlcNAcylation of PFK1 has demonstrated that O-GlcNAcylation inhibits PFK1 enzyme activity\|In cells, a single set of antagonistic enzymes-O-GlcNAc transferase (OGT) and O-GlcNAc hydrolase are responsible for the addition and removal of GlcNAc moiety, respectively.	SIGNOR-267606
O15503	Q13131	0	phosphorylation	up-regulates quantity by stabilization	0.256	Here we report that AMPK interacts with and mediates phosphorylation of Insig. Thr222 phosphorylation following AMPK activation is required for protein stabilization of Insig-1, inhibition of cleavage and processing of SREBP-1, and lipogenic gene expression in response to metformin or A769662. AMPKα1 subunit associates with Insig-1 in a dose-dependent manner.	SIGNOR-277430
O14757	Q13535	0	phosphorylation	up-regulates	0.925	Atr activation typically leads to chk1 phosphorylation and activation. In response to genotoxic stress, chk1 is phosphorylated on serines 317 (s317) and 345 (s345) by the ataxia-telangiectasia-related (atr) protein kinase.	SIGNOR-134716

Q13315

P16104

1

phosphorylation

up-regulates

0.2

H2ax interacts with numerous proteins required for dna damage signaling and repair when phosphorylated on ser-140. Phosphorylation of ser-140 (h2ax139ph) in response to ionizing radiation is mediated by both atm and prkdc. Our data showed that h2ax is phosphorylated by uva-activated jnk.

SIGNOR-160206

Q15139

O96013

1

phosphorylation

up-regulates activity

0.252

When PKD3 was knocked-down using isoform-specific shRNA (PKD3-shRNA), PAK4 activity (judged by its phosphorylation status at the activation loop using the pS474-PAK4 antibody) was decreased

SIGNOR-275930

O15297

P06744

1

dephosphorylation

down-regulates activity

0.24

The WIP1 mediated inhibition of NLK activity markedly decreased the phosphorylation of lymphoid enhancer binding factor 1 (LEF1), enhancing its interaction with beta-catenin.|Wip1 directly dephosphorylates NLK and increases Wnt activity during germ cell development.

SIGNOR-277155

O95251

P53350

0

phosphorylation

up-regulates

0.503

Here, we show that the interaction between plk1 and hbo1 is mitosis-specific and that plk1 phosphorylates hbo1 on ser-57 in vitro and in vivo. During mitosis, cdk1 phosphorylates hbo1 on thr-85/88, creating a docking site for plk1 to be recruited. Significantly, the overexpression of hbo1 mutated at the plk1 phosphorylation site (s57a) leads to cell-cycle arrest in the g1/s phase, inhibition of chromatin loading of the minichromosome maintenance (mcm) complex, and a reduced dna replication rate.

SIGNOR-160751

P17612

Q15256

1

phosphorylation

down-regulates activity

0.343

The PKA phosphorylation site on PTP-SL was identified as the Ser(231) residue. treatment of COS-7 cells with PKA activators, or overexpression of the Calpha catalytic subunit of PKA, inhibited the cytoplasmic retention of ERK2 and p38alpha by wild-type PTP-SL, but not by a PTP-SL S231A mutant.‚

SIGNOR-250038

Q9Y4C4

O43164

0

ubiquitination

up-regulates activity

0.403

These results suggest that the ubiquitylation of MFHAS1 by praja2 has a vital role in M1 macrophage polarization and promotes the transformation of M2 macrophages to M1 macrophages through both the JNK and p38 pathways.

SIGNOR-278559

O95983

O14965

0

phosphorylation

up-regulates

0.286

These results suggest that the biochemical changes of mbd3 may be intimately related to the targeting of mbd3 to centrosomes. aurora-a phosphorylates mbd3

SIGNOR-93693

O14920

Q92905

1

phosphorylation

down-regulates activity

0.33

Overexpression of IKKalpha or IKKbeta leads to enhanced phosphorylation of CSN5, the catalytic subunit for CSN deneddylase activity. Mutational analyses have revealed that phosphorylation at serine 201 and threonine 205 of CSN5 impairs CSN-mediated deneddylation activity in vitro.

SIGNOR-275519

Q99942

Q9Y4P1

1

ubiquitination

down-regulates quantity by destabilization

0.405

These results substantiate the notion that RNF5 negatively regulates ATG4B availability with concomitant effect on LC3 processing and autophagy under normal growth conditions.|These results suggest that RNF5 directly induces ATG4B ubiquitination.

SIGNOR-278664

P54793

Q96SB4

0

phosphorylation

up-regulates activity

0.2

Phosphorylation by SRPK1 drives ASF from the cytosol to the nucleus.|Phosphorylation of ASF by SR protein kinase 1 (SRPK1) in the cytosol results in ASF relocation to the nucleus, whereas phosphorylation of ASF by Clk and Sty releases ASF from speckles and recruits it into nascent transcripts where ASF regulates alternative splicing.

SIGNOR-279765

P23458

P42224

1

phosphorylation

up-regulates activity

0.79

The central event in cytokine_dependent transcriptional regulation is phosphorylation of STATs on a single tyrosine residue at their C_terminus (Darnell, 1997b). The reaction is catalyzed by cytokine receptor_associated tyrosine kinases of the Janus type (Jak) at the cell membrane and triggers the homo_ and heterodimerization of STAT molecules via reciprocal phosphotyrosineSH2 domain interactions

SIGNOR-236373

P19022

P12931

0

phosphorylation

down-regulates

0.397

Src-mediated phosphorylation of the n-cadherin cytoplasmic domain results in a significant reduction in beta-catenin bindingbeta-catenin dissociates from n-cadherin and redistributes to the nucleus of transmigrating melanoma cells to activate gene transcription.Because there were only four tyrosine residues (y852, y860, y884, and y886) in this peptide, all of them were phosphorylated.

SIGNOR-143242

Q04759

Q00613

1

phosphorylation

up-regulates

0.349

At the same time, ea causes pkc?-Mediated phosphorylation and activation of the transcription factor heat shock factor 1, an inducer of glucose dependence.

SIGNOR-200576

P17612

O43566

1

phosphorylation

up-regulates activity

0.338

RGS14 is phosphorylated in vitro at Ser258 and Thr494 by PKA. cAMP-induced phosphorylation as an important modulator of RGS14 function since phosphorylation could enhance RGS14 binding to Galpha(i)-GDP

SIGNOR-250045

Q86UC2

P28482

0

phosphorylation

up-regulates activity

0.2

ERK1/2 phosphorylate RSPH3. the extent of radiolabeled phosphate incorporation into RSPH3 T286A was much less than that into wild-type RSPH3, suggesting that threonine 286 is the major ERK1/2 phosphorylation site in cells. ERK2 also phosphorylates RSPH3 on threonine 243 to a lesser extent. Phosphorylation of the double mutant T243V/T286A RSPH3 was no more than 20% that of wild-type RSPH3 (Fig. 4, C and D). inhibiting ERK1/2 activity appears to negatively regulate the AKAP function of RSPH3.

SIGNOR-262839

P68400

P04004

1

phosphorylation

up-regulates activity

0.328

Therefore, we expressed Vn in a baculovirus system and show (i) that the CKII phosphorylation of wt-Vn enhances the adhesion of bovine aorta endothelial cells; (ii) that the double mutant T50E/T57E (in which the neutral Thr residues are replaced by the negatively charged Glu residues considered analogs of Thr-P) has a significantly enhanced capacity to promote cell adhesion and to accelerate cell spreading when compared with either wild-type Vn or to the neutral T50A/T57A mutant

SIGNOR-250971

P50616

P28482

0

phosphorylation

down-regulates

0.354

Tob is rapidly phosphorylated at ser 152, ser 154, and ser 164 by erk1 and erk2 upon growth-factor stimulation.

SIGNOR-88720

P43351

P00519

0

phosphorylation

up-regulates activity

0.685

C-Abl tyrosine kinase associates with and phosphorylates Rad52 on tyrosine 104. he functional significance of c-Abl-dependent phosphorylation of Rad52 is underscored by our findings that cells that express the phosphorylation-resistant Rad52 mutant, in which tyrosine 104 is replaced by phenylalanine, exhibit compromised nuclear foci formation in response to IR.

SIGNOR-251435

P29474

P62140

0

dephosphorylation

up-regulates activity

0.2

The increase in eNOS activity coincided with specific dephosphorylation of eNOS-Thr495, known to enhance eNOS activity. Inhibition of protein phosphatase 1 (PP1) by calyculin A, tautomycetin, or siRNA against PP1 reversed NF-induced eNOS-Thr495 dephosphorylation

SIGNOR-248574

Q05513

P31946

1

phosphorylation

down-regulates activity

0.368

Our results with the 14-3-3 mutants indirectly imply a new phosphorylation site, 130Ser (and to a lesser extent 141Thr), in 14-3-3b that regulates the association}dissociation of 14-3-3b and PKC-f.

SIGNOR-249035

P04626

Q16827

0

dephosphorylation

down-regulates quantity by destabilization

0.403

In this study, our co-immunoprecipitation experiment along with the results derived from in vivo , cultured cells and clinical specimen confirm that PTPRO dephosphorylates ERBB2 at Y1248.|PTPRO overexpression remarkably accelerated degradation of ERBB2 (XREF_FIG).

SIGNOR-276979

Q9HCE7

Q9P2Y5

1

ubiquitination

down-regulates activity

0.2

Here we report that UVRAG is ubiquitinated by SMURF1 at lysine residues 517 and 559, which decreases the association of UVRAG with RUBCN and promotes autophagosome maturation. However, the deubiquitinase ZRANB1 specifically cleaves SMURF1-induced K29 and K33-linked polyubiquitin chains from UVRAG, thereby increasing the binding of UVRAG to RUBCN and inhibiting autophagy flux.

SIGNOR-273652

O14770

P12830

1

transcriptional regulation

up-regulates quantity by expression

0.2

We show that the Pbx1 and Meis2 homeodomain proteins interact with Klf4 and can be recruited to DNA elements comprising a Klf4 site or G C box, with adjacent Meis and Pbx sites. Meis2d and Pbx1a activate expression of p15(Ink4a) and E-cadherin, dependent on the Meis2d transcriptional activation domain. We suggest a model in which genes with Klf4 sites can be cooperatively activated by Meis2/Pbx1 and Klf4, dependent primarily on recruitment by Klf4.

SIGNOR-267242

P27361

Q9HAV4

1

phosphorylation

down-regulates activity

0.312

Here we show that ERK suppresses pre-miRNA export from the nucleus through phosphorylation of exportin-5 (XPO5) at T345/S416/S497. After phosphorylation by ERK, conformation of XPO5 is altered by prolyl isomerase Pin1, resulting in reduction of pre-miRNA loading.

SIGNOR-262985

Q9BYT3

Q5JQC9

1

phosphorylation

up-regulates quantity by stabilization

0.2

Differential phosphoproteomic analysis and in vitro kinase assay identified novel phosphorylation substrates of STK33, fibrous sheath components AKAP3 and AKAP4, whose expression levels decreased in testis after deletion of Stk33.

SIGNOR-272956

Q16695

P29375

0

demethylation

up-regulates activity

0.2

KDM5 subfamily is capable of removing tri‐ and di‐ methyl marks from lysine 4 on histone H3 (H3K4). Depending on the methylation site, its effect on transcription can be either activating or repressing.

SIGNOR-264300

P28370

Q9NRC1

1

transcriptional regulation

down-regulates quantity by repression

0.2

Human SWI/SNF-associated PRMT5 methylates histone H3 arginine 8 and negatively regulates expression of ST7 and NM23 tumor suppressor genes.

SIGNOR-268991

P42574

P06396

1

cleavage

down-regulates

0.639

Caspase-3 mediates cleavage of gelsolin, generating a fragment that severs actin filaments in an unregulated fashion. The cleavage of gelsolin causes cells to round up, detach and undergo nuclear fragmentation.

SIGNOR-51652

Q16828

Q12778

1

dephosphorylation

up-regulates activity

0.428

It has been previously demonstrated that MKP-3 dephosphorylates FOXO1 on Ser256 and promotes nuclear translocation of FOXO1 , which subsequentially binds to the promoters of gluconeogenic genes and turns on the gluconeogenic program.|We also reported that MKP-3 can activate FOXO1 by at least dephosphorylating Ser 256, one of the Akt phosphorylation sites xref .

SIGNOR-276983

P31749

Q5VWQ8

1

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

Q16539

Q8IW41

1

phosphorylation

up-regulates activity

0.637

In hela cells, prak was activated in response to cellular stress and proinflammatory cytokines. Prak activity was regulated by p38alpha and p38beta both in vitro and in vivo and thr182 was shown to be the regulatory phosphorylation site.

SIGNOR-58135

P29353

P06239

0

phosphorylation

up-regulates activity

0.744

We show that during TCR signaling, the tyrosines Y239, Y240 and Y317 of Shc are the primary sites of tyrosine phosphorylation. CD4/Lck-dependent tyrosine phosphorylation on Shc was markedly diminished when Y317 was mutated, suggesting a preference of Lck for the Y317 site. tyrosine phosphorylation of Shc may play a key role in T lymphocyte proliferation via interaction of phosphorylated Shc with downstream molecules involved in activation of Ras and Myc proteins

SIGNOR-251388

P31749

O75925

0

sumoylation

up-regulates activity

0.378

Although multiple sites on Akt could be SUMOylated, K276 was identified as a major SUMO acceptor site. K276R or E278A mutation reduced SUMOylation of Akt but had little effect on its ubiquitination. Strikingly, these mutations also completely abolished Akt kinase activity. In support of these results, we found that expression of PIAS1 and SUMO1 increased Akt activity, whereas expression of SENP1 reduced Akt1 activity.

SIGNOR-252735

P06493

P0C1S8

0

phosphorylation

down-regulates activity

0.587

Recombinant Wee1B effectively phosphorylated cyclin B-associated Cdk1 on tyrosine-15, resulting in an inactivation of the kinase activity of Cdk1.

SIGNOR-279134

Q15208

Q9BXF6

1

phosphorylation

up-regulates activity

0.2

We identified 5 potential NDR1 substrates in the mouse brain and chose two for functional validation. We show that one NDR1 substrate is another kinase, AP-2 associated kinase-1 (AAK1) which regulates dendritic branching as a result of NDR1 phosphorylation. Another substrate is the Rab8 guanine nucleotide exchange factor (GEF) Rabin8 (a Sec2p homolog) which we find is involved in spine synapse formation.

SIGNOR-263035

P17612

O75899

1

phosphorylation

down-regulates activity

0.2

Here we show that the functional coupling of GABA(B)R1/GABA(B)R2 receptors to inwardly rectifying K(+) channels rapidly desensitizes. This effect is alleviated after direct phosphorylation of a single serine residue (Ser892) in the cytoplasmic tail of GABA(B)R2 by cyclic AMP (cAMP)-dependent protein kinase (PKA).

SIGNOR-263150

Q14164

Q13370

1

phosphorylation

up-regulates activity

0.2

While IKK\u03b5 phosphorylates and activates PDE3B to induce catecholamine resistance, TBK1 inhibits AMPK activity to reduce catabolism via this pathway.

SIGNOR-278517

O75177

Q92793

1

relocalization

up-regulates

0.397

The calcium-responsive transactivator recruits creb binding protein to nuclear bodies.

SIGNOR-129926

O95863

P31947

0

relocalization

down-regulates

0.2

Pkd1 phosphorylates ser(11) (s11) on transcription factor snail, a master emt regulator and repressor of e-cadherin expression, triggering nuclear export of snail via 14-3-3_ binding

SIGNOR-168540

Q05655

P31749

0

phosphorylation

up-regulates activity

0.26

Of note, the amino acid sequence adjacent to Ser204 phosphorylation site matches the minimal AKT substrate motif (RxxpS) suggesting that AKT1 could potentially directly regulate PRKCD through phosphorylation.|This integrative analysis allowed us to confirm that the enrichment of PRKCD centered network is likely the result of elevated phosphorylation of PRKCD by AKT1.

SIGNOR-280175

P45985

O43318

0

phosphorylation

up-regulates activity

0.711

Mitogen-activated protein kinase kinase 4 (mkk4)/stress-activated protein kinase/extracellular signal-regulated kinase (sek1), a dual-specificity kinase that phosphorylates and activates jnk, synergized with tak1 in activating jnk.Taken together, these results identify TAK1 as a regulator in the HPK1 --> TAK1 --> MKK4/SEK1 --> JNK kinase cascade and indicate the involvement of JNK in the TGF-beta signaling pathway.

SIGNOR-50618

P14921

P49841

0

phosphorylation

up-regulates quantity by stabilization

0.2

Here, we show that ETS1 forms a complex with glycogen synthase kinase-3β (GSK3β). Specifically, GSK3β-mediated phosphorylation of ETS1 at threonine 265 and serine 269 promoted protein stability, induced the transcriptional activation of matrix metalloproteinase (MMP)-9, and increased cell migration.

SIGNOR-277560

P35222

P35790

0

phosphorylation

down-regulates activity

0.286

The data suggest that CKI phosphorylates and destabilizes the beta-catenin degradation complex, likely through the dissociation of PP2A, providing a mechanism by which CKI stabilizes beta-catenin and propagates the Wnt signal.

SIGNOR-279161

P24844

O14578

0

phosphorylation

up-regulates activity

0.561

Activation of the catalytic ATPase domain residing in the N‐terminus of the heavy chain relies on the reversible phosphorylation of the associated MLC on Ser19 (monophosphorylation), or in some cases on both Thr18 and Ser19 (diphosphorylation)|We detected Ser19 of MLC as the common phosphorylation site for the catalytic domains of MRCK_/_, ROK_, MLCK and PAK_, but only ROK_ and CRIK are able to phosphorylate both Thr18 and Ser19 residues causing diphosphorylation.

SIGNOR-260306

P07333

Q00341

0

transcriptional regulation

down-regulates quantity by repression

0.342

Vigilin (Vgl1) is essential for heterochromatin formation, chromosome segregation, and mRNA stability and is associated with autism spectrum disorders and cancer: vigilin, for example, can suppress proto-oncogene c-fms expression in breast cancer.

SIGNOR-266696

P49792

O60260

0

ubiquitination

down-regulates quantity by destabilization

0.2

Our findings suggested that the intracellular levels of RanBP2 and its functional activity may be modulated by Parkin-mediated ubiquitination and proteasomal pathways. Furthermore, Parkin controls the intracellular levels of sumoylated HDAC4, as a result of the ubiquitination and degradation of RanBP2.

SIGNOR-259116

P01008

P00740

1

cleavage

down-regulates activity

0.897

Antithrombin (AT), a member of the serine protease inhibitor (SERPIN) superfamily, is a major circulating inhibitor of blood coagulation proteases such as factor (F) IIa (known as thrombin), FXa and, to a lesser extent, FIXa, FXIa and FXIIa. SERPINC1, which encodes AT in humans, is located on chromosome 1q25.1

SIGNOR-264140

Q99661

P53350

0

phosphorylation

up-regulates activity

0.812

Active PLK1, in turn, phosphorylates MCAK at Ser715 which promotes its microtubule depolymerase activity essential for faithful chromosome segregation.

SIGNOR-276931

P51809

P12931

0

phosphorylation

up-regulates activity

0.286

We found that TI-VAMP is phosphorylated in vitro by c-Src kinase on tyrosine 45 of the Longin domain.Mimicking tyrosine 45 phosphorylation activates both t-SNARE binding and exocytosis of TI-VAMP.

SIGNOR-273819

P11940

Q9UHC7

0

ubiquitination

up-regulates activity

0.35

We show that MKRN1 directly binds to the cytoplasmic poly(A)-binding protein (PABPC1) and associates with polysomes. MKRN1 is positioned upstream of poly(A) tails in mRNAs in a PABPC1-dependent manner. Ubiquitin remnant profiling and in vitro ubiquitylation assays uncover PABPC1 and ribosomal protein RPS10 as direct ubiquitylation substrates of MKRN1.Our data show that MKRN1 associates with polysomes and ubiquitylates RPS10, indicating a role in translational control. We hypothesize that ribosomes encountering the MKRN1-PABPC1 complex are stalled, possibly via ubiquitylation of RPS10 on K107 and other MKRN1 substrates.

SIGNOR-272215

Q9HC98

O14757

0

phosphorylation

down-regulates activity

0.237

Nek6 is also directly phosphorylated by the checkpoint kinases Chk1 and Chk2 in vitro .

SIGNOR-279403

P40763

P23470

0

dephosphorylation

up-regulates activity

0.259

PTPRG activation by the P1-WD peptide affected the tyrosine phosphorylation of several signaling molecules. Data analysis identified 31 molecules whose phosphorylation was modified in a statistically significant manner (Table I). inhibition of ABL1, BMX, BTK, DAB1, ITGB1, JAK2, KDR, KIT, LIMK1, MET, PDGFRB, SHC1, and VCL correlates with tyrosine dephosphorylation. In contrast, SRC inhibition correlates with hyperphosphorylation of the inhibitory Tyr530 residue and with dephosphorylation of the activatory Tyr419. Moreover, CDK2 and CTTN inhibition correlates with a hyperphosphorylation of the inhibitory Tyr15 and Tyr470, respectively. In contrast, a subgroup of 13 proteins, including BLNK, DOK2, ERBB2, GRIN2B, INSR, PDGFRA, PRKCD, PXN, STAT1, STAT2, STAT3, STAT5A, and ZAP70, appears to be activated by PTPRG activity.

SIGNOR-254729

P27361

P53805

1

phosphorylation

up-regulates activity

0.38

Consensus phosphorylation sites for p42/44 MAPK and GSK-3 are present in the SP repeat of MCIP1 at serine 112 and serine 108, respectively |Several endogenous proteins are capable of inhibiting the catalytic activity of calcineurin. Modulatory calcineurin interacting protein 1 (MCIP1) is unique among these proteins on the basis of its pattern of expression and its function in a negative feedback loop to regulate calcineurin activity. Here we show that MCIP1 can be phosphorylated by MAPK and glycogen synthase kinase-3 and that phosphorylated MCIP1 is a substrate for calcineurin.

SIGNOR-249478

P55087

P19784

0

phosphorylation

down-regulates activity

0.338

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. | 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-250976

Q96N67

P60953

1

guanine nucleotide exchange factor

up-regulates activity

0.739

As a GEF, Dock7 exchanges GDP for GTP on Cdc42 and Rac1, causing their activation, followed by activation of downstream effectors, including the dephosphorylation (activation) of cofilin, a key regulator of actin turnover.

SIGNOR-261886

Q00987

Q9Y5A7

1

ubiquitination

up-regulates activity

0.276

Our results rather suggest that Mdm2 specifically ubiquitinates NUB1 on lysine 159 and that this modification is required for NUB1 functions.|We conclude that Mdm2 acts as a positive regulator of NUB1 function, by modulating NUB1 ubiquitination on lysine 159.

SIGNOR-278556

Q16513

Q15118

0

phosphorylation

up-regulates activity

0.338

PDK1 phosphorylates the PRKs at their conserved activation loop threonines (Thr-774 and Thr-816 for PRK1 and PRK2, respectively) both in vitro and in vivo.

SIGNOR-250265

P10636-2

P27361

0

phosphorylation

down-regulates activity

0.501

We have studied the relationship between the phosphorylation oftau by several kinases (MARK, PKA, MAPK, GSK3) and its assembly into PHFs. By contrast, MARK and PKA phosphorylate several sites within the repeats (notably theKXGS motifs including Ser262, Ser324, and Ser356, plus Ser320); in addition PKA phosphorylates somesites in the flanking domains, notably Ser214. This type of phosphorylation strongly reduces tau’s affinityfor microtubules, and at the same time inhibits tau’s assembly into PHFs.

SIGNOR-275434

P24928

Q9GZU7

0

dephosphorylation

up-regulates activity

0.431

Phosphorylation and dephosphorylation of the C-terminal domain (CTD) of RNA polymerase II (Pol II) represent a critical regulatory checkpoint for transcription. Transcription initiation requires Fcp1/Scp1-mediated dephosphorylation of phospho-CTD. | This combined structure-function analysis discloses the residues in Scp1 involved in CTD binding and its preferential dephosphorylation of P.Ser5 of the CTD heptad repeat.

SIGNOR-248785

P00519

Q92466

1

phosphorylation

down-regulates

0.458

C-abl might act as a negative regulator of uv-ddb by phosphorylating ddb2

SIGNOR-90446

Q70Z35

P60953

1

guanine nucleotide exchange factor

up-regulates activity

0.423

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-260572

P31751

P35222

1

phosphorylation

up-regulates

0.57

Phosphorylation of beta-catenin by akt promotes beta-catenin transcriptional activitywe have demonstrated that akt phosphorylates beta-catenin at ser552 in vitro and in vivo.

SIGNOR-152958

P24941

P04637

1

phosphorylation

up-regulates activity

0.871

The N-terminus of E2F1 can interact directly with a region towards the C-terminus of p53, resulting in increased nuclear retention of p53 and p53-mediated transcription and apoptosis. This is inhibited by competition between p53 and cyclin A at the binding site within E2F19,10. The interaction between p53 and E2F1 is enhanced by phosphorylation of p53 on Ser315, a residue within the E2F1 binding region that is phosphorylated by cell cycle kinases such as cdk1, cdk2, cdk9 and Aurora kinase A

SIGNOR-119379

Q13535

Q03164

1

phosphorylation

up-regulates

0.281

Mll is phosphorylated at serine 516 by atr in response to genotoxic stress in the s phase, which disrupts its interaction with, and hence its degradation by, the scf(skp2) e3 ligase, leading to its accumulation.

SIGNOR-25151

P17252

P30622

1

phosphorylation

down-regulates

0.2

Furthermore, by using phosphoproteomic analysis, we determined that s309 and s311 of clip-170 are phosphorylated in cells and mapped s311 as a protein kinase a (pka) phosphorylation site.phosphorylation of s311 may be critical for establishing the ?folded Back? Conformation of clip-170clip-170 open and folded back conformations represent active and inactive modes of the protein, respectively

SIGNOR-165857

Q9P0L2

Q13470

1

phosphorylation

down-regulates activity

0.2

We also discover a MARK-mediated phosphorylation on TNK1 at S502 that promotes an interaction between TNK1 and 14-3-3, which sequesters TNK1 and inhibits its kinase activity.Phosphorylation of TNK1 at S502 within the proline rich domain is required for TNK1 binding to 14-3-3.MARKs mediate phosphorylation at S502 and 14-3-3 binding to TNK1, which restrains the movement of TNK1 into heavy membrane-associated clusters.

SIGNOR-273866

P35637

O75534

1

post transcriptional regulation

up-regulates quantity by stabilization

0.2

These findings demonstrated that LINC00205 facilitates malignant phenotypes in LC by recruiting FUS to stabilize CSDE1, suggesting LINC00205 as a potential target for LC therapy.|Subsequent RIP assay con- firmed such prediction, as CSDE1 mRNA was evidently precipitated by anti-FUS (Figure 3A).

SIGNOR-262110

P68400

Q9Y6K1

1

phosphorylation

down-regulates activity

0.2

This modulation can be directly attributed to CK2-mediated phosphorylation of Dnmt3a. We also find that CK2-mediated phosphorylation is required for localization of Dnmt3a to heterochromatin.

SIGNOR-276650

Q92997

Q8IZQ1

0

relocalization

down-regulates quantity by destabilization

0.251

Our data taken together with the known role of ALFY in autophagy, demonstrate specific targeting and autophagy-mediated removal of DVL3 by hALFY.

SIGNOR-266793

P23352

Q14938

0

transcriptional regulation

down-regulates quantity

0.2

By integrating transcriptomic profiling (RNA-seq) of Nfia- and Nfix-deficient GNPs with epigenomic profiling (ChIP-seq against NFIA, NFIB and NFIX, and DNase I hypersensitivity assays), we reveal that these transcription factors share a large set of potential transcriptional targets, suggestive of complementary roles for these NFI family members in promoting neural development

SIGNOR-268884

P05412

O94925

1

transcriptional regulation

up-regulates quantity by expression

0.35

The transcription factor c-Jun can directly bind to the GLS gene promoter and enhance expression

SIGNOR-268035

P63241

P49366

0

post translational modification

up-regulates activity

0.933

Deoxyhypusine synthase (DHPS) utilizes spermidine and NAD as cofactors to incorporate a hypusine modification into the eukaryotic translation initiation factor 5A (eIF5A). Hypusine is essential for eIF5A activation, which, in turn, plays a key role in regulating protein translation of selected mRNA that are associated with the synthesis of oncoproteins, thereby enhancing tumor cell proliferation.

SIGNOR-266374

P49840

P17655

0

cleavage

up-regulates activity

0.2

Thus, it has been shown that calpain cleaves the inhibitory domain of GSK3 generating two fragments of 40 and 30 kDa. This cleavage enhanced activity of the kinase

SIGNOR-251612

Q9Y2R2

P06239

1

dephosphorylation

down-regulates activity

0.751

In vitro experiments with purified recombinant proteins demonstrated that PTPN22-D195A/C227S interacted directly with activated Lck, Zap70, and TCRzeta, confirming the initial substrate trap results. Native PTPN22 dephosphorylated Lck and Zap70 at their activating tyrosine residues Tyr-394 and Tyr-493, respectively, but not at the regulatory tyrosines Tyr-505 (Lck) or Tyr-319 (Zap70). Native PTPN22 also dephosphorylated TCRzeta in vitro and in cells, and its substrate trap variant co-immunoprecipitated with TCRzeta when both were coexpressed in 293T cells, establishing TCRzeta as a direct substrate of PTPN22.

SIGNOR-248836

Q6XZF7

P60953

1

guanine nucleotide exchange factor

up-regulates activity

0.572

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-260547

Q13480

P06213

0

phosphorylation

up-regulates activity

0.502

HGab-1 was phosphorylated by IR at eight tyrosine residues (Y242, Y285, Y373, Y447, Y472, Y619, Y657, and Y689). t Gab-1 is the major binding partner of PI-3 kinase in 3T3L1 cells when stimulated with insulin

SIGNOR-251310

Q8TCU6

P62136

0

dephosphorylation

up-regulates activity

0.2

MS analysis of wild-type P-Rex1 and a PP1\u03b1-binding-deficient mutant revealed that endogenous PP1\u03b1 dephosphorylates P-Rex1 on at least three residues, Ser834, Ser1001 and Ser1165.|The phosphatase activity of PP1\u03b1 is required for P-Rex1 activation.

SIGNOR-277024

P12931

P23528

1

phosphorylation

down-regulates

0.553

Tyrosine phosphorylation of cofilin at y68 by v-src leads to its degradation through ubiquitin-proteasome pathway

SIGNOR-188352

Q969Q1

Q08209

1

ubiquitination

down-regulates quantity

0.26

First, downregulation of MuRF1 significantly attenuates degradation of CnA in cardiomyocytes in vitro, indicating that endogenous MuRF1 negatively regulates the stability of CnA in a cell-autonomous manner.|Furthermore, MuRF1 directly ubiquitinated CnA in vitro.|These results suggest that MuRF1 directly polyubiquitinates CnA.

SIGNOR-278736

P51452

P27361

1

dephosphorylation

down-regulates activity

0.665

The activation of the mapk activity requires the dual phosphorylation of the ser/thr and tyr residues in the txy kinase activation motif (1113), and deactivation occurs through the action of either ser/thr protein phosphatase (14), protein-tyrosine phosphatase (ptp) (14, 15), or dual specificity phosphatases

SIGNOR-103035

Q5TCZ1

P12931

0

phosphorylation

up-regulates activity

0.64

First, we observed that the co-expression of both activated Src and wild-type Tks5 stimulated gelatin degradation beyond that of Tks5 overexpression alone ( ).|In melanoma cells Src dependent phosphorylation of Tks5 at tyrosine 557 is important for binding to Nck, for Nck recruitment to invadopodia, and for invadopodia associated matrix degradation activity .

SIGNOR-280134

P41236

P19784

0

phosphorylation

up-regulates activity

0.307

Recombinant wild-type I-2 and the Ala-120/121 mutant were phosphorylated synergistically by GSK-3 and casein kinase II. The Thr-72 and Ser-86 mutants, however, did not undergo this synergistic phosphorylation. Our studies indicate that Thr-72 is the only GSK-3 site and that Ser-86 is the casein kinase II site required for the potentiation of GSK-3 action.

SIGNOR-251021

O15297

Q12888

1

dephosphorylation

down-regulates activity

0.392

In addition, WIP1 dephosphorylates 53BP1 at Threonine 543 that was previously implicated in mediating interaction with RIF1.

SIGNOR-277046

P29323

O94989

1

phosphorylation

down-regulates quantity by destabilization

0.485

We have identified a RhoA guanine nucleotide exchange factor, Ephexin5, which negatively regulates excitatory synapse development until EphrinB binding to the EphB receptor tyrosine kinase triggers Ephexin5 phosphorylation, ubiquitination, and degradation. EphB2 mediates phosphorylation of Ephexin5 at tyrosine-361

SIGNOR-262864

P49841

P13051

1

phosphorylation

down-regulates quantity by destabilization

0.2

Here we show that glycogen synthase kinase 3 (GSK-3) interacts with and phosphorylates UNG2 at Thr60 and that Thr60 phosphorylation requires a Ser64 priming phosphorylation event.|phosphorylation of Thr60 and Ser64 creates a cyclin E/c-Myc-like phosphodegron that promotes polyubiquitylation and proteasome-mediated degradation

SIGNOR-264885

P36956

P17612

0

phosphorylation

down-regulates

0.2

Sterol regulatory element-binding protein 1 is negatively modulated by pka phosphorylation. ser338 of srebp-1a and ser314 of srebp-1c are pka phosphorylation sites.

SIGNOR-143392

O95376

Q96P20

1

ubiquitination

up-regulates activity

0.444

ARIH2 can ubiquitinate NLRP3 via the NACHT domain of NLRP3, and the RING2 domain of ARIH2 is required for NLRP3 ubiquitination 65.|Overexpression of ARIH2 promotes NLRP3 ubiquitination and inhibits NLRP3 inflammasome activation 65.

SIGNOR-278686

Q9HCE7

O95947

1

polyubiquitination

down-regulates quantity by destabilization

0.257

Smad6 mediates Tbx6 ubiquitination and proteasomal degradation. Tbx6 forms a ternary complex with Smad6 and Smurf1. Here, we report that Tbx6 interacts directly with Smad6, an inhibitory Smad that antagonizes the BMP signal. This interaction is mediated through the Mad homology 2 (MH2) domain of Smad6 and residues 90-180 of Tbx6. We demonstrate that Smad6 facilitates the degradation of Tbx6 protein through recruitment of Smurf1, a ubiquitin E3 ligase.

SIGNOR-272784

P45452

P02675

1

cleavage

down-regulates quantity by destabilization

0.2

Matrix metalloproteinases collagenase-2, macrophage elastase, collagenase-3, and membrane type 1-matrix metalloproteinase impair clotting by degradation of fibrinogen and factor XII| We have now investigated the role of collagenase-2 (MMP-8), macrophage elastase (MMP-12), collagenase-3 (MMP-13), and membrane type 1-matrix metalloproteinase (MT1-MMP, MMP-14) in the degradation of fibrinogen and Factor XII of the plasma clotting system.|MMP-13 27YVATRDN g-chain| 20ADSGEGD a-chain| 124RNSVDXLNXN b-chain| 442LRTGKEKV a-chain

SIGNOR-263615

Q9Y243

P16220

1

phosphorylation

up-regulates

0.496

When overexpressed in serum-stimulated cells, akt/pkb potently induced ser-133 phosphorylation of creb and promoted recruitment of cbp.

SIGNOR-62257

Q96KS0

Q16665

1

hydroxylation

down-regulates quantity by destabilization

0.856

There are three EglN family members in humans and mice (EglN1, EglN2, and EglN3). Their enzymatic activity requires oxygen, ascorbic acid, iron, and α-ketoglutarate (α-KG). Under hypoxic conditions, EglNs lose their activity and fail to hydroxylate HIFα, which leads to HIFα stabilization

SIGNOR-261999

Q13153

P62714

0

dephosphorylation

down-regulates activity

0.2

Both sites were dephosphorylated with the same kinetics; the anti-Ser(P)198 antibody was subsequently used as it exhibited lower background staining. Direct comparison of PP2Cα with purified PP1 and PP2A lead us to conclude that at the same molar ratio PP2Cα was the most efficient in dephosphorylating PAK1 (Fig. 1D). In this case we monitored two autophosphorylation sites in the Pak1 N-terminal regulatory region (Ser57 and Ser198/203) using phosphospecific antibodies: both sites showed the same kinetics of inactivation.

SIGNOR-248600

Q13586

Q9Y478

0

phosphorylation

down-regulates activity

0.2

STIM1 is a novel exercise‐regulated AMPK substrate. Phosphorylation of STIM1 by AMPK suppresses SOCE

SIGNOR-277298

P41145

P01189

0

chemical activation

up-regulates activity

0.652

Accordingly, for the OTDP, the binding affinity and activity of a large number of opiate compounds have been tested at μ-, δ-, and κ-opiate receptors. Binding studies were originally conducted in guinea pig brain membranes, and subsequent studies have been carried out in CHO cells transfected with human receptors. Table 7 shows a biochemical method for determining activity and potency of opioid compounds, stimulation of [35S]GTPγS binding in membranes from cells transfected with human μ, δ, or κ receptors.

SIGNOR-258410

O75175

Q9Y6Q6

1

transcriptional regulation

down-regulates quantity by repression

0.2

Our results reveal that CNOT3 is a critical regulator of bone mass acting on bone resorption through posttranscriptional down-regulation of RANK mRNA stability, at least in part, even in aging-induced osteoporosis.

SIGNOR-261572

Q99418

P62330

1

guanine nucleotide exchange factor

up-regulates activity

0.887

Effects of ARNO upon Axonogenesis Are Mediated by Downstream Activation of ARF6. ARNO/ARF6 signaling pathways that could modulate actin reorganization in the axonal growth cone. ARNO stimulates GTP exchange on ARF6, thereby increasing the amount of active ARF6.

SIGNOR-264910

P28482

Q15831

1

phosphorylation

down-regulates activity

0.402

Directly and/or through the activation of p90RSK, ERK phosphorylates LKB-1 at Ser325 and Ser428. The phosphorylation of LKB-1 causes the dissociation of LKB-1 from AMPK, resulting in the impaired activation of AMPK.

SIGNOR-209876

Q01813

O60502

0

deglycosylation

up-regulates activity

0.2

Our previous investigation on O-GlcNAcylation of PFK1 has demonstrated that O-GlcNAcylation inhibits PFK1 enzyme activity|In cells, a single set of antagonistic enzymes-O-GlcNAc transferase (OGT) and O-GlcNAc hydrolase are responsible for the addition and removal of GlcNAc moiety, respectively.

SIGNOR-267606

O15503

Q13131

0

phosphorylation

up-regulates quantity by stabilization

0.256

Here we report that AMPK interacts with and mediates phosphorylation of Insig. Thr222 phosphorylation following AMPK activation is required for protein stabilization of Insig-1, inhibition of cleavage and processing of SREBP-1, and lipogenic gene expression in response to metformin or A769662. AMPKα1 subunit associates with Insig-1 in a dose-dependent manner.

SIGNOR-277430

O14757

Q13535

0

phosphorylation

up-regulates

0.925

Atr activation typically leads to chk1 phosphorylation and activation. In response to genotoxic stress, chk1 is phosphorylated on serines 317 (s317) and 345 (s345) by the ataxia-telangiectasia-related (atr) protein kinase.

SIGNOR-134716