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14
O00203
Q9Y496
1
binding
up-regulates activity
0.371
Here, we show that the beta subunit of AP-3, a clathrin-associated protein complex required for HIV-1 release, is a target of IP(7)-mediated pyrophosphorylation. We have identified Kif3A, a motor protein of the kinesin superfamily, as an AP3B1-binding partner and demonstrate that Kif3A, like the AP-3 complex, is involved in an intracellular process required for HIV-1 Gag release.
SIGNOR-260398
Q8N6T7
P36956
1
binding
up-regulates activity
0.371
SIRT6 directs chromatin recruitment of CLOCK:BMAL1 and SREBP1.Importantly, SIRT6 also controls SREBP-1 recruitment to target promoters, such as Fasn, and helps maintain proper cyclic transcription. In fact, circadian metabolomics analyses reveal that SIRT6 controls lipid metabolism, contributing to the regulation of pathways involved in fatty acid synthesis and beta oxidation, triglyceride storage, signaling, and cellular membrane lipids.
SIGNOR-268158
P53350
Q14790
1
phosphorylation
down-regulates quantity by destabilization
0.371
By phosphorylating S387 in procaspase-8 Cdk1/cyclin B1 generates a phospho-epitope for the binding of the PBD of Plk1. Subsequently, S305 in procaspase-8 is phosphorylated by Plk1 during mitosis. Using an RNAi-based strategy we could demonstrate that the extrinsic cell death is increased upon Fas-stimulation when endogenous caspase-8 is replaced by a mutant (S305A) mimicking the non-phosphorylated form. Together, our data show that sequential phosphorylation by Cdk1/cyclin B1 and Plk1 decreases the sensitivity of cells toward stimuli of the extrinsic pathway during mitosis.
SIGNOR-272989
Q5S007
P53805
1
phosphorylation
up-regulates activity
0.371
LRRK2 Directly Phosphorylates RCAN1.
SIGNOR-278340
Q13351
Q01543
2
binding
down-regulates activity
0.371
The present study also shows that EKLF itself inhibits FLI-1 activity. As suggested above for the inhibition of EKLF activity, the inhibition of FLI-1 activity most probably involves the indirect recruitment of EKLF to FLI-1 target promoters by protein-protein interaction.
SIGNOR-256046
Q9BXM7
Q6NUN9
1
phosphorylation
up-regulates activity
0.37
PINK1 directly phosphorylates PARIS at S322 and S613, priming it for ubiquitination by Parkin, which interacts with the C-terminus zinc finger of PARIS and tags it for destruction [ xref \u2013 xref , xref ].|Thus, by tagging PARIS for destruction, PINK1/Parkin drive the generation of new mitochondria by increasing PGC-1\u03b1 levels (Fig. 1d).
SIGNOR-278268
Q9NVW2
P01106
1
ubiquitination
down-regulates quantity by destabilization
0.37
This suggests that RLIM negatively regulates the transcriptional activity of c-Myc.|We further showed that RLIM can promote polyubiquitination of c-Myc in cells.
SIGNOR-278551
Q9P1W9
P14618
1
phosphorylation
up-regulates quantity by stabilization
0.37
Here, we identified the protein-serine/threonine kinase PIM2, a known oncogene, as a novel binding partner of PKM2. The interaction between PIM2 and PKM2 was confirmed by multiple biochemical approaches in vitro and in cultured cells. Importantly, we found that PIM2 could directly phosphorylate PKM2 on the Thr-454 residue, resulting in an increase of PKM2 protein levels. Compared with wild type, PKM2 with the phosphorylation-defective mutation displayed a reduced effect on glycolysis
SIGNOR-267472
P51955
Q96CN5
1
phosphorylation
down-regulates activity
0.37
 Moreover, LRRC45 interacts with both C-Nap1 and rootletin and is phosphorylated by Nek2A at S661 during mitosis. After phosphorylation, both LRRC45 centrosomal localization and fiber-like structures are significantly reduced, which subsequently leads to centrosome separation. 
SIGNOR-273707
Q07912
Q9Y4C1
1
phosphorylation
down-regulates activity
0.37
We report that ACK1 phosphorylates the ER co-activator, KDM3A, a H3K9 demethylase, at an evolutionary conserved tyrosine 1114 site in a heregulin-dependent manner, even in the presence of tamoxifen.
SIGNOR-276842
P33981
Q9Y5T5
1
phosphorylation
down-regulates quantity by destabilization
0.37
 Usp16 is a TTK phosphorylation substrate. 
SIGNOR-277351
P17252
P23677
1
null
down-regulates activity
0.37
In contrast, phosphorylation of the A isoform with PKC caused a significant decrease in activity whether assayed in the presence or absence of calcium/calmodulin (to _25% of the unphosphorylated enzyme activity).
SIGNOR-248991
O14920
Q13568
1
phosphorylation
up-regulates activity
0.37
Here we present evidence that the kinase IKKbeta phosphorylates and activates IRF5 in response to stimulation in several inflammatory pathways, including those emanated from Toll like receptors and retinoic acid inducible gene I like receptors.|Recombinant IKK\u03b2 phosphorylated IRF5 at Ser-445 in vitro, and a point mutation of this serine abolished IRF5 activation and cytokine production.
SIGNOR-279466
Q9HAU4
Q13887
1
ubiquitination
down-regulates quantity by destabilization
0.37
Consistent with these observations, another study documented that Smurf2 specifically destabilizes KLF5, that the degradation of KLF5 by Smurf2 is disrupted by the proteasome inhibitor MG132, and that Smurf2 ubiquitinates KLF5 .
SIGNOR-278781
Q9P2P5
O15350
1
ubiquitination
up-regulates quantity by stabilization
0.37
P73 was efficiently ubiquitinated but stabilized in a NEDL2-dependent manner. Accordingly, p73 decayed at faster rates in the absence of NEDL2 than in its presence. Consistent with the NEDL2-mediated stabilization of p73, NEDL2 enhanced the p73-dependent transcriptional activation. Thus, our results suggest that NEDL2 activates the function of p73 by increasing its stability.
SIGNOR-269457
O14920
P31946
1
phosphorylation
down-regulates
0.37
We provide a mechanism for these observations through the phosphorylation of 14-3-3beta by ikkbeta and pkcdelta on serine residues ser132 and ser60, respectively, which interferes with its binding to ttp and hence the retention of ttp in the cytoplasm.
SIGNOR-138608
Q96AC1
P12931
2
binding
up-regulates activity
0.37
Here we report that Src binds to and phosphorylates Kindlin-2 at Y193. Reciprocally, Kindlin-2-Y193 phosphorylation activates and maintains Src kinase activity. Kindlin-2-Y193 phosphorylation is also involved in its binding capacity with Migfilin and the recruitment of Migfilin to the focal adhesions. Functionally, we demonstrate that Kindlin-2-Y193 phosphorylation regulates Kindlin-2-mediated cell spreading and migration.
SIGNOR-266101
P01106
P52789
1
transcriptional regulation
up-regulates quantity
0.37
Here, using the P493-6 Burkitt's lymphoma model with an inducible MYC, we demonstrate that HIF-1 cooperates with dysregulated c-Myc to promote glycolysis by induction of hexokinase 2, which catalyzes the first step of glycolysis, and pyruvate dehydrogenase kinase 1, which inactivates pyruvate dehydrogenase and diminishes mitochondrial respiration.
SIGNOR-259986
Q9NT99
P78352
1
binding
up-regulates activity
0.37
A possible function for the NGL–PSD-95 interaction is to couple trans-synaptic adhesion events to the recruitment of PSD-95 and other PSD-95-associated postsynaptic proteins. PSD-95 and liprin-α may be key synaptic scaffolding proteins that couple trans-synaptic adhesions to the assembly of synaptic proteins/vesicles
SIGNOR-264052
P16220
P01189
1
transcriptional regulation
up-regulates quantity by expression
0.37
Transcriptional activation of the proopiomelanocortin gene by cyclic AMP-responsive element binding protein|Further, expression of a dominant inhibitory mutant of CREB reduced cAMP stimulated transcription of the full length POMC promoter and the PTRE.
SIGNOR-268620
Q99750
P13349
1
binding
down-regulates activity
0.37
We demonstrate that I-mf inhibits the transactivation activity of the MyoD family and represses myogenesis. I-mf associates with MyoD family members and retains them in the cytoplasm by masking their nuclear localization signals.
SIGNOR-240433
P68400
Q00613
1
phosphorylation
up-regulates activity
0.37
Transcriptional activity and DNA binding of heat shock factor-1 involve phosphorylation on threonine 142 by CK2.
SIGNOR-250898
P19784
Q13144
1
phosphorylation
up-regulates activity
0.37
Two conserved sites (Ser712/713) are phosphorylated by casein kinase 2. They lie at the extreme C-terminus and are required for the interaction of eIF2Bepsilon with its substrate, eIF2, in vivo and for eIF2B activity in vitro. 
SIGNOR-250990
P10398
Q15796
1
phosphorylation
down-regulates quantity by destabilization
0.37
Araf promotes Smad2 linker phosphorylation through S253.|In this study, we demonstrate that Araf can directly bind to and phosphorylate the linker of Smad2, leading to degradation of activated Smad2.
SIGNOR-279391
P04150
P41235
1
transcriptional regulation
up-regulates quantity by expression
0.37
Electrophoretic mobility shift, chromatin immunoprecipitation (ChIP), and streptavidin DNA binding assays revealed that DEX increased binding of HNF4alpha to the HNF4-RE and that an interaction of GR and HNF4alpha occurred at this site.
SIGNOR-251684
P35637
Q16637
1
relocalization
up-regulates activity
0.37
Here, we report that FUS associates with the SMN complex, mediated by U1 snRNP and by direct interactions between FUS and SMN.|The FUS IP and pulldown revealed that FUS also associates with components of the SMN complex, including SMN and Gemins 4 and 6 |Remarkably, the number of SMN-stained nuclear bodies was dramatically reduced in the FUS knockdown cells
SIGNOR-262107
P34947
P04637
1
phosphorylation
down-regulates
0.37
Grk5, but not grk2 or grk6, phosphorylates p53 at thr-55, which promotes the degradation of p53, leading to inhibition of p53-dependent apoptotic response to genotoxic damage.
SIGNOR-163707
P80370
P02751
1
binding
up-regulates
0.37
We show a direct interaction of pref-1 and fibronectin via the pref-1 juxtamembrane domain and fibronectin c-terminal domain
SIGNOR-165347
O00165
P16615
1
binding
down-regulates quantity by destabilization
0.37
The anti-apoptotic protein HAX-1 interacts with SERCA2 and regulates its protein levels to promote cell survival.|Importantly, HAX-1 overexpression was associated with down-regulation of SERCA2 expression levels, resulting in significant reduction of apparent ER Ca(2+) levels.
SIGNOR-262052
P06493
P49459
1
phosphorylation
up-regulates
0.37
Hhr6a is phosphorylated in vitro by cdk-1 and -2 on ser120, a residue conserved in all hhr6a homologues, resulting in a 4-fold increase in its ubiquitin-conjugating activity.
SIGNOR-116504
Q00987
Q9NXV6
1
ubiquitination
down-regulates
0.37
Carf interacts with hdm2 and is ubiquitinated and negatively regulated by hdm2 by proteasome-dependent degradation.
SIGNOR-160974
Q00987
Q99466
1
ubiquitination
down-regulates
0.37
We demonstrate that the intracellular domain of notch 4 is targeted for ubiquitylation and hence degradation by the ubiquitin ligase mdm2.
SIGNOR-172826
Q9HCI7
P04637
1
ubiquitination
down-regulates activity
0.37
Here we describe MSL2, a novel E3 ligase for p53 that promotes ubiquitin-dependent cytoplasmic p53 localization. Unlike Mdm2 or most other p53 E3 ligases, MSL2-mediated p53 ubiquitination does not affect the stability of p53. Moreover, the MSL2-mediated effect on p53 is Mdm2-independent. Thus, our study identifies an important ubiquitin-ligase for modulating p53 subcellular localization. MSL2 ubiquitination of p53 is required for p53 cytoplasmic localization.
SIGNOR-271774
Q9NZS9
Q14790
1
binding
down-regulates
0.37
We also demonstrate that the mitochondrial protein bar, which has been shown to simultaneously bind caspase-8 and bcl-2
SIGNOR-112585
P12931
Q96AC1
2
phosphorylation
up-regulates activity
0.37
Here we report that Src binds to and phosphorylates Kindlin-2 at Y193. Reciprocally, Kindlin-2-Y193 phosphorylation activates and maintains Src kinase activity. Kindlin-2-Y193 phosphorylation is also involved in its binding capacity with Migfilin and the recruitment of Migfilin to the focal adhesions. Functionally, we demonstrate that Kindlin-2-Y193 phosphorylation regulates Kindlin-2-mediated cell spreading and migration.
SIGNOR-266100
Q05513
P41594
1
phosphorylation
up-regulates activity
0.37
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-249284
P18146
Q9Y251
1
transcriptional regulation
up-regulates quantity by expression
0.37
Promoter CpG hypomethylation and transcription factor EGR1 hyperactivate heparanase expression in bladder cancer.
SIGNOR-254267
Q9UHD2
Q99558
1
phosphorylation
down-regulates quantity by destabilization
0.37
TBK1 induces NIK phosphorylation and degradation.
SIGNOR-279767
Q13490
Q9Y385
1
ubiquitination
down-regulates quantity by destabilization
0.37
We also found that ubiquitin-ligase (E3), c-IAP1 preferentially interacts with phosphorylated Ube2j1. Moreover, we noticed that phosphorylated Ube2j1 is rapidly degraded by the proteasome during ER stress cell recovery. Taken together, these data suggest that Ube2j1 and its phosphorylation is important for transient ER stress cell recovery and the phosphorylated Ube2j1 is degraded by the proteasome.
SIGNOR-263092
P48729
Q9UKV8
1
phosphorylation
down-regulates activity
0.369
Our experiments demonstrated that target engagement by AGO2 stimulates its hierarchical, multi-site phosphorylation by CSNK1A1 on a series of highly conserved residues (S824-S834).Although this impairs target binding, dephosphorylation by ANKRD52-PPP6C allows AGO2 to engage new targets. Inactivation of this cycle strongly inhibits global miRNA-mediated repression.
SIGNOR-276510
P07333
P16885
1
null
up-regulates
0.369
Studies with multipotent precursor cell lines (Fig. 4A) indicate that CSF-1R Tyr-807 and Tyr-721 promote macrophage differentiation via the PLC-γ2 pathway
SIGNOR-255570
P24941
Q01167
1
phosphorylation
up-regulates
0.369
We have mapped two cdk phosphorylation sites, serines 368 and 423, which play a role in defining foxk2 function through regulating its stability and its activity as a transcriptional repressor protein. These two cdk sites appear vital for foxk2 function because expression of a mutant lacking these sites cannot be tolerated and causes apoptosis.
SIGNOR-167834
P23769
P37231
1
null
down-regulates activity
0.369
GATA2 interacts directly with PPARG and C/EBP a , which may deplete PPARG involved in the promotion of adipogenesis
SIGNOR-132949
Q9H2P0
Q9GZQ8
1
binding
up-regulates activity
0.369
Here, we show for the first time that hippocampal ADNP deficiency paralleled reduced beclin1 expression which, in turn, parallels increased tauopathy and cell death. We now show that ADNP directly interacts with LC3B, implicating the requirement of a healthy ADNP system for the apoptotic/autophagy processes.
SIGNOR-266759
P29376
P22681
1
phosphorylation
up-regulates
0.369
Although c-cbl is found to be phosphorylated by ltk and therefore is a second candidate linking ltk with the pi3-kinase pathway along with irs-1, we found that the p85 subunit of pi3 kinase directly binds to tyrosine 753 of ltk, which is located within a yxxm motif, a consensus binding amino acid sequence for the sh2 domain of p85.
SIGNOR-49528
O00327
Q9UJ55
1
binding
down-regulates activity
0.369
Magel2 represses the activity of the Clock:Bmal1 heterodimer in a Per2-luciferase assay. Magel2 interacts with Bmal1 and with Per2 as measured by co-immunoprecipitation in co-transfected cells, and exhibits a subcellular distribution consistent with these interactions when visualized by immunofluorescence. As well, Magel2 induces the redistribution of the subcellular localization of Clock towards the cytoplasm, in contrast to the nucleus-directed effect of Bmal1 on Clock subcellular localization.
SIGNOR-253517
Q76NI1
P11137
1
phosphorylation
up-regulates activity
0.369
V-KIND enhances Thr phosphorylation of MAP2.
SIGNOR-278950
P31749
P15559
1
phosphorylation
down-regulates quantity by destabilization
0.369
Akt phosphorylates NQO1 on S40 and T128 residues. Here we show that Akt phosphorylates NQO1 at T128 residues and triggers its polyubiquitination and proteasomal degradation, abrogating its antioxidative effects in PD. Akt binds NQO1 in a phosphorylation-dependent manner. Interestingly, Akt, but not PINK1, provokes NQO1 phosphorylation and polyubiquitination with Parkin as an E3 ligase. 
SIGNOR-276868
Q9UQM7
P11831
1
phosphorylation
up-regulates activity
0.369
Skeletal muscle CaMKII enriches in nuclei and phosphorylates myogenic factor SRF at multiple sites. | Microsequencing of these phosphorylated peptides identified that both Ser-103 and a novel residue, Thr-160 in the MADS box of SRF, were sites of phosphorylation. | The location of Thr-160 in the 3-D structure of SRF suggests that its phosphorylation by nuclear CaMKII may directly influence DNA binding of SRF and other MADS box factors.
SIGNOR-250639
P28482
P42702
1
phosphorylation
down-regulates
0.369
Indeed, phosphorylation of the cytoplasmic domain of the low-affinity lif receptor alpha-subunit (lifr) in mono q-fractionated, lif-stimulated 3t3-l1 extracts occurred only in those fractions containing activated mapk;ser-1044 served as the major phosphorylation site in the human lifr for mapk both in agonist-stimulated 3t3-l1 lysates and by recombinant extracellular signal-regulated kinase 2 in vitro
SIGNOR-32753
Q00526
Q14934
1
phosphorylation
up-regulates activity
0.369
CDK3 enhances the transactivation and transcription activity of NFAT3.|NFAT3 can be phosphorylated by CDK3 at Ser259, which is critical for its transactivation activity and cell transformation.
SIGNOR-278511
Q9H4B4
P05412
1
phosphorylation
up-regulates
0.369
Stress-induced c-jun activation mediated by polo-like kinase 3 in corneal epithelial cells. Hypoxia/reoxygenation activated plk3 in hce cells to directly phosphorylate c-jun proteins at phosphorylation sites ser-63 and ser-73, and to increase dna binding activity of c-jun.
SIGNOR-157721
O14733
P35568
1
phosphorylation
down-regulates activity
0.369
Tyrosine phosphorylation of IRS-1 initiates insulin signaling, whereas serine/threonine phosphorylation alters the ability of IRS-1 to transduce the insulin signalInsulin increased the phosphorylation of Ser312, Ser616, Ser636, Ser892, Ser1101, and Ser1223 Ser312 can be phosphorylated by kinases, such as c-jun NH2-terminal kinase and inhibitor of _B kinase
SIGNOR-217920
P45983
Q96P20
1
phosphorylation
up-regulates activity
0.369
Ethanol induced JNK1 phosphorylation activated the NLRP3 inflammasome that induced caspase-1 dependent mitophagy inhibition, thereby exacerbating ROS accumulation and causing cell death.|However, recent studies suggested that Ser 194 phosphorylation of NLRP3 was essential for the control of inflammasome activation and that JNK1 directly phosphorylates NLRP3, which stimulates the self-association and oligomerization of NLRP3 [ xref , xref ].
SIGNOR-280034
Q15418
Q15653
1
phosphorylation
down-regulates quantity by destabilization
0.369
By using recombinant wild-type and mutant IkappaBbeta proteins, both active ERK2 and RSK1 were found to directly phosphorylate IkappaBbeta, but only active RSK1 phosphorylated IkappaBbeta on Ser19 and Ser23, two sites known to mediate the subsequent ubiquitination and degradation.
SIGNOR-280114
P28482
P68400
1
phosphorylation
up-regulates
0.369
Erk2, which is activated by egfr signaling, directly binds to ck2alpha via the erk2 docking groove and phosphorylates ck2alpha primarily at t360/s362, subsequently enhancing ck2alpha activity
SIGNOR-161855
P51812
Q14790
1
phosphorylation
down-regulates quantity by destabilization
0.369
The ribosomal S6 kinase 2 (RSK2) is a member of the p90 ribosomal S6 kinase (p90RSK) family of proteins and plays a critical role in proliferation, cell cycle, and cell transformation. Here, we report that RSK2 phosphorylates caspase-8, and Thr-263 was identified as a novel caspase-8 phosphorylation site. In addition, we showed that EGF induces caspase-8 ubiquitination and degradation through the proteasome pathway, and phosphorylation of Thr-263 is associated with caspase-8 stability.
SIGNOR-272997
Q9H4M3
P38398
1
binding
down-regulates quantity by destabilization
0.369
The F-box protein FBXO44 mediates BRCA1 ubiquitination and degradation. The Skp1-Cul1-F-box-protein44 (SCF(FBXO44)) complex ubiquitinates full-length BRCA1 in vitro.
SIGNOR-272037
Q12913
P19174
1
dephosphorylation
down-regulates
0.369
Cd148 can dephosphorylate lat and plc?1 In vitro. / plc?1 Undergoes inducible tyrosine phosphorylation following tcr stimulation (46), and this phosphorylation is required to stimulate its catalytic activity
SIGNOR-105790
Q86Y07
Q13469
1
phosphorylation
up-regulates
0.369
We demonstrate that vrk2 directly interacts and phosphorylates nfat1 in ser-32 within its n-terminal transactivation domain.
SIGNOR-199263
Q99801
Q13547
1
binding
down-regulates activity
0.369
NKX3.1 also binds HDAC1 and releases p53 from p53-MDM2-HDAC1 complex, promoting p53 acetylation and activity.
SIGNOR-251549
P53355
Q13526
1
phosphorylation
down-regulates activity
0.369
DAPK1 inhibits Pin1 nuclear localization and cellular function.|DAPK1 interacts with and phosphorylates Pin1 on Ser71 in vitro and in vivo.
SIGNOR-278160
Q9UDY2
O00192
1
relocalization
down-regulates activity
0.369
We identified ARVCF as a binding partner of ZO-1 and ZO-2 and characterized the role of PDZ-domain proteins in plasma membrane and nuclear localization of ARVCF. ZO-2, in contrast, relocated to the nucleus with ARVCF, and, given the interaction between the ZO-2 PDZ domains and ARVCF, raised the possibility that ZO-2 may play a role in nuclear localization of ARVCF. Such a role for ZO-2 is indeed supported by the ability of the ZO-2 PDZ domain to efficiently relocate ARVCF from the plasma membrane to the nucleus in a process that required the ability of the two proteins to interact and the presence of a functional NLS in the ZO-2 PDZ domains. Thus, ZO-2 could be involved in nuclear translocation and/or retention of ARVCF and play a role in regulating postulated functions of ARVCF in gene expression
SIGNOR-252122
P28482
Q9Y463
1
phosphorylation
up-regulates activity
0.369
S421 resides within a Ser-Pro phosphoacceptor motif that is typical for ERK1/2 and recombinant ERK2 phosphorylated DYRK1B at S421 in vitro. 
SIGNOR-276937
Q13884
P53778
1
binding
down-regulates
0.368
Basal localization of the p38g/p-Carm1 complex in muscle stem cells occurs via binding to the dystrophin-glycoprotein complex (DGC) through b1-syntrophin. In dystrophin-deficient muscle stem cells undergoing asymmetric division, p38g/b1-syntrophin interactions are abrogated, resulting in enhanced Carm1 phosphorylation
SIGNOR-255901
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
P28482
P12036
1
phosphorylation
up-regulates activity
0.368
The fraction containing Erk2, as well as bacterially expressed Erk1 and Erk2, phosphorylated all types of KSP motifs in peptides (KSPXK, KSPXXK, KSPXXXK, and KSPXXXXK) derived from NF-M and NF-H. They also phosphorylated an expressed 24 KSPXXXK repeat NF-H polypeptide, an expressed NF-H as well as dephosphorylated native rat NF-H, and NF-M proteins with accompanying decreases in their respective electrophoretic mobilities. |Our data on primary hippocampal cells also showed an inhibition of neurite outgrowth by the drug that was accompanied by inhibition of MAP, NF-H, and NF-M phosphorylation.
SIGNOR-249424
P06493
O00418
1
phosphorylation
down-regulates
0.368
Phosphorylation at ser359 inhibits eef2k activity even at high calcium concentrations. we demonstrate that cdc2 contributes to controlling eef2 phosphorylation in cells. inactivation of eef2k by cdc2 may serve to keep eef2 active during mitosis
SIGNOR-177982
P46934
Q96GG9
1
monoubiquitination
up-regulates quantity
0.368
Here we revealed a previously unknown mechanism that regulates hDCNL1. In cultured mammalian cells ectopically expressed hDCNL1 was mono-ubiquitinated predominantly at K143, K149, and K171. Using a classical chromatographic purification strategy, we identified Nedd4-1 as an E3 ligase that can catalyze mono-ubiquitination of hDCNL1 in a reconstituted ubiquitination system.Taken together, these results suggest a mono-ubiquitination-mediated mechanism that governs nuclear-cytoplasmic trafficking of hDCNL1,
SIGNOR-272719
Q13535
Q92900
1
phosphorylation
up-regulates activity
0.368
Phosphorylation of UPF1 by the PIKKs SMG1, ATM and ATR is stimulated in response to DNA damage.
SIGNOR-278911
P49840
Q13144
1
phosphorylation
down-regulates activity
0.368
We identify multiple phosphorylation sites in the largest, catalytic, subunit (epsilon) of mammalian eIF2B. Glycogen synthase kinase 3 (GSK3) is responsible for phosphorylating Ser535. This regulatory phosphorylation event requires both the fourth site (Ser539) and a distal region, which acts to recruit GSK3 to eIF2Bepsilon in vivo. eIF2Bϵ from mammals or insects is a substrate for glycogen synthase kinase 3 (GSK3), and this inhibits the activity of eIF2B
SIGNOR-251215
Q13547
O43524
1
deacetylation
up-regulates activity
0.368
The ability of HDAC1 to cause muscle atrophy required its deacetylase activity and was linked to the induction of several atrophy genes by HDAC1, including atrogin-1, which required deacetylation of FoxO3a
SIGNOR-256486
Q7L7X3
Q13043
1
phosphorylation
up-regulates
0.368
In addition, the thousand-and-one (tao) amino acids kinase or taok13 has been shown to directly phosphorylate and activate hpo or mst1/2.
SIGNOR-201324
Q16539
Q6STE5
1
phosphorylation
up-regulates activity
0.368
P38 phosphorylates the baf60 subunit of the swi-snf chromatin remodelling complex, and p38 recruits this complex to differentiation-specific loci.
SIGNOR-176557
P45983
Q9H211
1
phosphorylation
up-regulates quantity by stabilization
0.368
 We discovered that human Cdt1, an essential origin licensing protein whose activity must be restricted to G(1) phase, is a substrate of the stress-activated mitogen-activated protein (MAP) kinases p38 and c-Jun N-terminal kinase (JNK). These MAP kinases phosphorylate Cdt1 both during unperturbed G(2) phase and during an acute stress response. Phosphorylation renders Cdt1 resistant to ubiquitin-mediated degradation during S phase and after DNA damage by blocking Cdt1 binding to the Cul4 adaptor, Cdt2. 
SIGNOR-276361
P29350
P08922
1
dephosphorylation
down-regulates
0.368
Overexpression of shp-1 results in ros dephosphorylation and effectively downregulates ros-dependent proliferation and transformation. We propose that shp-1 is an important downstream regulator of ros signaling.
SIGNOR-105922
O00408
P17612
1
binding
down-regulates activity
0.368
We show that caffeine, by inhibiting PDE2, enhances PKA phosphorylation leading to mitochondrial NCLX activation, thereby reducing neuronal excitotoxicity and enhancing learning in mice. 
SIGNOR-275730
O94889
O14965
1
binding
up-regulates activity
0.368
We identify Aurora-A as a KLHL18-interacting partner. Overexpression of KLHL18 and CUL3 promotes Aurora-A ubiquitylation in vivo, and the CUL3-KLHL18-ROC1 ligase ubiquitylates Aurora-A in vitro. Our study reveals that the CUL3-KLHL18 ligase is required for timely entry into mitosis, as well as for the activation of Aurora-A at centrosomes.We also noticed that overexpression of both CUL3 and KLHL18 stimulated mono-ubiquitylation of Aurora-A as well (Fig. 8A,B).
SIGNOR-272021
P68400
P45973
1
phosphorylation
up-regulates
0.368
Hp1_ was multiply phosphorylated at n-terminal serine residues (s11-14) in human and mouse cells and that this phosphorylation enhanced hp1_'s affinity for h3k9me. Unphosphorylatable mutant hp1_ exhibited severe heterochromatin localization defects in vivo, and its prolonged expression led to increased chromosomal instability.
SIGNOR-171707
P06493
Q9Y6Q9
1
phosphorylation
down-regulates
0.368
We demonstrate that aib1 is phosphorylated on ser728 and ser867 by cdk1/cyclin b at the onset of mitosis and remains phosphorylated until exit from m phase.
SIGNOR-195233
Q9ULU8
P60880
1
binding
up-regulates activity
0.368
CAPS interacted independently with either syntaxin-1 or SNAP-25 suggesting that CAPS might promote QaQbc-SNARE heterodimer formation. CAPS binding to syntaxin-1 was mediated by the membrane-proximal C-terminal SNARE motif (H3) and membrane linker domain sequences of syntaxin-1
SIGNOR-264338
P10747
P48736
1
binding
up-regulates
0.368
Cd28 can bind directly to pi3k by a well-characterized ymnm binding motif in its cytoplasmic domain.
SIGNOR-159322
P17612
P07101
1
phosphorylation
up-regulates activity
0.368
HTH1 was phosphorylated at Ser40 by PKA. Tyrosine hydroxylase (TH) has been reported to require binding of 14-3-3 proteins for optimal activation by phosphorylation. phosphorylationof hTH1‚4 at Ser40, to a stoichiometry of up to 1.0 molphosphate per mol TH subunit, dramatically increases their binding to 14-3-3 proteins.
SIGNOR-250061
Q99873
P62633
1
methylation
down-regulates
0.368
Cnbp interacts with protein arginine methyltransferase prmt1 / r25 or r27 appear to be the major methylation sites in cnbp /arginine methylation of cnbp impedes rna binding
SIGNOR-204958
P27361
O15525
1
phosphorylation
up-regulates quantity
0.368
By contrast, MAFG-S124A was not phosphorylated, indicating that ERK1 phosphorylates MAFG at S124.|Notably, cotransfection of ERK1 increased total levels of wild-type MAFG and MAFG-T3A but not MAFG-S124A, indicating that phosphorylation increased MAFG stability.
SIGNOR-280027
Q8WTV0
P12931
1
binding
up-regulates activity
0.368
Importantly, coimmunoprecipitation of SR-BI and Src demonstrated that the two proteins are directly associated in WT macrophages (Fig. 7B), suggesting that SR-BI plays a direct role in activation of Src in macrophages.
SIGNOR-260314
P07332
P11274
1
phosphorylation
down-regulates activity
0.368
In the present study, we demonstrate that BCR Tyr-246 and at least one of the closely spaced tyrosine residues, Tyr-279, Tyr-283, and Tyr-289 (3Y cluster), are phosphorylated by FES both in vitro and in 32Pi-labeled cells. Co-expression of BCR and FES in human 293T cells stimulated the tyrosine autophosphorylation of FES. By contrast, tyrosine phosphorylation of BCR by FES suppressed BCR serine/threonine kinase activity toward the 14-3-3 protein and BCR substrate, BAP-1. 
SIGNOR-251137
P39880
Q96FE7
1
transcriptional regulation
down-regulates quantity by repression
0.368
We demonstrate that CUX1 deficiency activates phosphoinositide 3-kinase (PI3K) signaling through direct transcriptional downregulation of the PI3K inhibitor PIK3IP1 (phosphoinositide-3-kinase interacting protein 1), leading to increased tumor growth and susceptibility to PI3K-AKT inhibition.
SIGNOR-260072
Q14790
P49768
1
cleavage
up-regulates activity
0.368
Remarkably, the caspases acting on PS1 could be subdivided in two groups. One group, containing caspase-8, -6 and -11, cleaved PS1 after residues ENDD329 and to a lesser extent after residues AQRD341. A second group consisting of caspase-3, -7 and -1 acted uniquely on AQRD341. Importantly, these two cleavage sites were also recognized by caspases in the C-terminal PS1 fragment produced by constitutive proteolysis.
SIGNOR-261760
Q92949
Q9UI46
1
transcriptional regulation
up-regulates quantity by expression
0.368
FOXJ1 expression in basal cells induced the expression of a panel of cilia-associated genes, including centrin 2 (CETN2); dynein, axonemal, heavy chain 11 (DNAH11); dynein, axonemal, intermediate chain 1 (DNAI1); dynein, axonemal, light intermediate chain 1 (DNALI1); EF-hand domain, C-terminal, containing 1 (EFHC1); sperm associated antigen 6 (SPAG6); tektin 1 (TEKT1), TEKT2 and tubulin, alpha 1a (TUBA1A; Figure 3C and Additional file 2: Table S1).
SIGNOR-266932
Q96GD4
P25490
1
phosphorylation
up-regulates
0.368
Aurora b kinase phosphorylates yy1 on serine 184 and to a lesser extent serine 180 at the g2/m stage of the cell cycle (fig. 7). We show that yy1 is rapidly dephosphorylated as the cells exit mitosis, likely by pp1. Also, our data indicates that phosphorylation at serine 180 and serine 184 can affect the dna binding activity of yy1
SIGNOR-200079
Q05655
P00533
1
phosphorylation
down-regulates activity
0.368
These data indicate that activation of protein kinase C and subsequent phosphorylation of the EGF receptor at T654 lead to rapid physiological attenuation of EGF receptor signaling.
SIGNOR-248858
P49841
Q13887
1
phosphorylation
down-regulates
0.368
Stability of the klf5 is mediated by proteasomal degradation via phosphorylation by glycogen synthase kinase 3_ (gsk3_) and recognition by f-box and wd repeat domain-containing 7 (fbw7) of a phosphodegron sequence surrounding serine 303 in klf5
SIGNOR-203627
O43474
P11831
1
binding
down-regulates
0.368
Klf4 antagonizes contractile gene expression through diverse mechanisms including (i) inhibiting the binding of srf-myocd or srf-mrtfs to the carg box by direct association with srf.
SIGNOR-174258
P51812
P25963
1
phosphorylation
down-regulates quantity by destabilization
0.368
Here, we show that RSK2 is activated by treatment with tumor necrosis factor-alpha (TNF-alpha) and directly phosphorylates IkappaBalpha at Ser 32, leading to IkappaBalpha degradation.
SIGNOR-279108
P12931
P15498
1
phosphorylation
up-regulates activity
0.368
These interactions are required for SRC-induced activation of VAV and the subsequent engagement of a JIP1-tethered JNK signaling module.|These interactions are required for SRC-induced tyrosine phosphorylation and activation of VAV and the subsequent engagement of a JIP1-tethered JNK signaling module ( xref ).
SIGNOR-279124
P28482
Q05469
1
phosphorylation
up-regulates activity
0.368
Thus, activation of the ERK pathway appears to be able to regulate adipocyte lipolysis by phosphorylating HSL on Ser(600) and increasing the activity of HSL.
SIGNOR-249413
Q00535
O14939
1
phosphorylation
up-regulates activity
0.368
In this study, we suggest that the phosphorylation and activation of PLD2 by cyclin-dependent kinase 5 (Cdk5) is critical for EGF-dependent insulin secretion.|We determined that Cdk5 phosphorylates PLD2 at Ser 134 of PLD2 and that this phosphorylation was suggested to be important for EGF-dependent insulin secretion.
SIGNOR-278395
P06493
P12830
1
phosphorylation
up-regulates activity
0.368
We show that adequate accumulation of Cin8 and Kip1 requires inactivation of the anaphase promoting complex-activator Cdh1 through sequential phosphorylation by Cdk1 and polo kinase.|We show that adequate accumulation of Cin8 and Kip1 requires inactivation of the anaphase-promoting complex-activator Cdh1 through sequential phosphorylation by Cdk1 and polo kinase.
SIGNOR-280204
P31749
P23396
1
phosphorylation
up-regulates activity
0.368
Here, we show that human RPS3 is a physiological target of Akt kinase and a novel mediator of neuronal apoptosis. NGF stimulation resulted in phosphorylation of threonine 70 of RPS3 by Akt, and this phosphorylation was required for Akt binding to RPS3.our experiment demonstrated that Akt up-regulates the endonuclease activity of RPS3 via phosphorylation and led us to believe that Akt phosphorylation of RPS3 after DNA damage is an antiapoptotic signal or a molecular switch that extends the life of a cell after DNA damage.
SIGNOR-259815