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P52565
P63000
1
guanine nucleotide exchange factor
down-regulates activity
0.811
Here, we report the expression of plexin-B3 in glioma cells, which upon stimulation by its ligand Sema5A results in significant inhibition of cell migration and invasion. A search for the underlying mechanism revealed direct interaction of plexin-B3 with RhoGDP dissociation inhibitor α (RhoGDIα), a negative regulator of RhoGTPases that blocks guanine nucleotide exchange and sequesters them away from the plasma membrane. direct interaction of RhoGDIα and the cytoplasmic domain of plexin-B3 (plexin-B3CD) was confirmed by GST pulldown assays.RhoGDIα is required for Sema5A-induced Rac1 inactivation and inhibition of cell invasion in C6 glioma.
SIGNOR-268436
Q9BZE0
Q9UMX1
0
relocalization
down-regulates
0.266
Negative regulation of gli1 and gli2 activator function by suppressor of fused through multiple mechanisms.Together, these observations reveal that su(fu) regulates the activity of gli1 and gli2 through distinct cytoplasmic and nuclear mechanisms.
SIGNOR-142608
O15054
Q15306
1
transcriptional regulation
up-regulates quantity by expression
0.422
JMJD3 seems to function by controlling expression of the transcription factor IRF4, which in turn is required for M2 polarization of macrophages in vitro and in vivo. Although this pathway is strongly supported by genetic.
SIGNOR-249540
Q07817
O14727
2
binding
down-regulates activity
0.842
These experiments demonstrate that bcl-xl associates with caspase-9 and apaf-1, and show that bcl-xl inhibits the maturation of caspase-9 mediated by apaf-1.
SIGNOR-56399
P13807
Q9Y463
0
phosphorylation
down-regulates activity
0.258
DYRK Family Protein Kinases Phosphorylate and Inactivate Glycogen Synthase. both protein kinases phosphorylate site 3a but no other sites that affect glycogen synthase activity.
SIGNOR-260633
Q6WCQ1
Q13464
0
phosphorylation
down-regulates
0.296
Enhanced rho kinase activity induces endothelial barrier dysfunction by a contractile mechanism via inactivation of myosin phosphatase (mp)..
SIGNOR-157593
O75116
Q99962
1
phosphorylation
down-regulates
0.439
We identified the phosphorylation site of endophilin a1 at thr-14 endophilin t14d inhibited egf receptor internalization. Furthermore, phosphorylation of endophilin by rho-kinase inhibited the binding to cin85.
SIGNOR-140466
Q15915
P08151
1
relocalization
up-regulates
0.377
Co-expression of zic1 resulted in gli1 and gli3 proteins being translocated to the nucleus in varying levels
SIGNOR-105491
Q96P68
P19086
2
binding
up-regulates activity
0.2
Here we systematically quantified ligand-induced interactions between 148 GPCRs and all 11 unique G alpha subunit C-termini. For each receptor, we probed chimeric G alpha subunit activation via a transforming growth factor-alpha (TGF alpha) shedding response in HEK293 cells lacking endogenous Gq/11- and G12/13- signaling. | We defined positive coupling if any member of the subfamily scored LogRAi ≥ -1 and negative coupling if all of the members scored LogRAi < -1 (Figure 3A-B). ROC analysis gives AUC = 0.78 (Figure S4A) when considering high-confidence known coupling data and suggested a threshold of LogRAi ≥ -1.0 for defining true couplings. | The score associated to this interaction has a LogRAi ≥ -1.0.
SIGNOR-257310
Q9NPA3
Q92748
2
binding
down-regulates activity
0.512
In the current study, we have determined the crystal structure of mouse S14 to 2.65-Å resolution. The structure of S14 reveals a helical protein arranged as a symmetric dimer. Cultured cell experiments indicate that S14 can form heterodimers with MIG12, suggesting a mechanism through which S14 could modulate ACC activity and subsequently rates of fatty acid synthesis via heterodimer formation with MIG12.In the current study, we have shown that regulating the levels of S14∶MIG12 heterodimers regulates the ability of MIG12 to activate ACC. Increasing S14∶MIG12 heterodimers by the overexpression of S14 resulted in decreased ACC activity and polymerization, whereas decreasing S14∶MIG12 heterodimers by knockdown of S14 increased ACC activity and polymerization.
SIGNOR-267113
Q9BZ95
P01106
2
binding
up-regulates quantity by stabilization
0.2
Indeed, dose-dependent TR-FRET and affinity pull-down assay confirmed the interaction of NSD3-s with MYC. Supporting functional significance of the interaction, co-expression of NSD3-s, but not the MYC-binding defective fragment of NSD3-s (1–347), stabilized MYC protein and increased MYC transcriptional activity as revealed by a MYC-driven reporter assay.
SIGNOR-259199
P01222
Q92911
1
transcriptional regulation
up-regulates quantity by expression
0.38
I– uptake is stimulated by TSH, the master hormone for thyroid gland regulation. TSH stimulation results, at least in part, from the cAMP-mediated increase in NIS biosynthesis. TSH not only stimulates NIS transcription and biosynthesis but is also required for modulating the NIS phosphorylation pattern, maintaining its half-life, and retaining NIS at the thyrocyte plasma membrane
SIGNOR-251995
Q99683
Q9UER7
2
phosphorylation
up-regulates
0.841
Our data demonstrated that ask1 controls the cytoplasmic localization of daxx (fig.1). our results indicate that daxx not only activates ask1 but also is a downstream target of ask1 and that accumulated daxx further activates ask1. Thus, the daxx-ask1 positive feedback loop amplifying jnk/p38 signaling plays an important role in the cell-killing effects of stressors, such as tnfalpha.
SIGNOR-188321
Q5S007
P10636
1
phosphorylation
down-regulates
0.528
Lrrk2 directly phosphorylates tubulin-associated tau, but not free tau;(iii) lrrk2 phosphorylates tau at thr181 as one of the target sites;. furthermore, we revealed that lrrk2-mediated phosphorylation of tau reduces its tubulin-binding ability.
SIGNOR-195756
Q9Y2K7
Q99814
0
transcriptional regulation
up-regulates quantity by expression
0.2
To this end, we confirm that KDM3A, KDM4B, KDM4C, KDM5B, KDM5C, and KDM62 are direct targets of HIF-1a while extent the list of known targets to KDM2A, KDM2B, KDM4D, KDM5A, and KDM6A. The results demonstrated that majority of the KDMs were similarly induced (KDM2A, KDM2B, KDM3A, KDM4B, KDM4C, KDM4D, KDM5A, KDM5B, KDM5C, KDM6B, and KDM7A) or repressed (KDM NO66 and KDM1A) by both HIF-1a and HIF-2a.
SIGNOR-271581
O60282
P54257
2
binding
up-regulates activity
0.402
HAP1 and GRIP1 are kinesin-1 adaptors that have been implicated individually in the transport of vesicular cargoes in the dendrites of neurons. We find that HAP1a and GRIP1 form a protein complex in the brain, and co-operate to activate the kinesin-1 subunit KIF5C in vitro
SIGNOR-264062
P50542
Q13608
2
binding
up-regulates activity
0.569
Pex1, Pex6, and Pex26 are involved in Pex5 export from peroxisomes., we found that Pex1 and Pex6 bind to Pex5 (Fig. ​(Fig.6). Therefore, it is conceivable that Pex1 and Pex6 pull out Pex5 from peroxisome membranes in an ATP-dependent manner.
SIGNOR-253619
Q96RD6
Q15208
0
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-263032
P51692
P00533
0
phosphorylation
up-regulates
0.829
Novel activation of stat5b in response to epidermal growth factor. novel activation of stat5b in response to epidermal growth factor.
SIGNOR-113393
Q9HAU4
Q13873
1
ubiquitination
down-regulates
0.503
Smurf1 and smurf2 are e3 ubiquitin ligases known to suppress tgf-beta signaling through degra-dation of smads and receptors for tgf-beta and bmps.
SIGNOR-193119
O14757
Q9HAW4
2
phosphorylation
up-regulates
0.794
We found that thr-916 on claspin is phosphorylated by chk1, suggesting that chk1 regulates claspin during checkpoint response.
SIGNOR-149411
Q9BXM7
Q9UJA2
1
phosphorylation
down-regulates quantity
0.429
In vitro kinase assays using recombinant proteins under various control conditions indicated that PINK1 directly phosphorylates CLS1 (XREF_FIG).|Similar to Fbxo15, knockdown of PINK1 kinase using shRNA increased CLS1 levels, whereas overexpression of PINK1 plasmid decreased CLS1 levels .
SIGNOR-280065
Q96TA2
O60313
1
cleavage
up-regulates activity
0.455
YME1L cleaves OPA1 at S2 and S3 site to transform into L-OPA1 to induce fusion when cells are faced with increased oxidative phosphorylation, whereas OMA1 cleaves OPA1 at an S1 site to transform into S-OPA1, resulting in the fragmented response to cellular stress, mitochondrial dysfunction, or deletion of YME1L
SIGNOR-274140
Q6PIY7
P31749
0
phosphorylation
down-regulates activity
0.2
We found that Gld2 activity is regulated by site-specific phosphorylation in its disordered N-terminal domain. We identified two phosphorylation sites (S62, S110) where phosphomimetic substitutions increased Gld2 activity and one site (S116) that markedly reduced activity. Using mass spectrometry, we confirmed that HEK 293 cells readily phosphorylate the N-terminus of Gld2. We identified protein kinase A (PKA) and protein kinase B (Akt1) as the kinases that site-specifically phosphorylate Gld2 at S116, abolishing Gld2-mediated nucleotide addition.
SIGNOR-259405
P05067
Q9Y5Z0
0
cleavage
up-regulates activity
0.544
BACE2, a beta -secretase homolog, cleaves at the beta site and within the amyloid-beta region of the amyloid-beta precursor protein.|Figure 6 Preferred BACE1 and BACE2 cleavage sites. (A) Sequence of APP indicating α- and β-cleavage sites, BACE1- and BACE2-cleavage sites, and the location of mutations analyzed here. APP numbering is that of the 770-aa isoform.
SIGNOR-261773
P19634
O00141
0
phosphorylation
up-regulates activity
0.304
Phosphorylation of NHE1 Ser 703 by SGK1 is essential for the binding of 14-3-3 protein to NHE1 , ] which, in turn, is critical in the activation of this Na + / H + exchanger , ].|These data suggest that endothelial SGK1 activates NHE1 in response to MG treatment.
SIGNOR-280123
P38398
Q7Z6Z7
0
ubiquitination
down-regulates quantity by destabilization
0.397
Collectively, these data indicate that HUWE1 targets BRCA1, but not BARD1, for polyubiquitination and degradation.Because HUWE1 promotes BRCA1 ubiquitination and degradation, we wondered whether it might contribute to the reduced BRCA1 protein levels in sporadic breast cancer.
SIGNOR-278583
P23760
P15056
0
phosphorylation
up-regulates activity
0.308
BRAF activates PAX3 to control muscle precursor cell migration during forelimb muscle development.|We found that BRAF clearly induced phosphorylation of PAX3 at Ser205 in both cell types (XREF_FIG).
SIGNOR-278435
P45985
P21333
2
binding
up-regulates activity
0.523
We used Filamin-A-deficient cells to show that Filamin A enhances MKK7 activation and is important for synergistic stress-induced JNK activation in vivo. Thus Filamin A is a novel member of the group of scaffold proteins whose function is to link two MAPKKs together and promote JNK activation. The present study provides evidence that Filamin A is one of the ‘binder’ molecules presumed to directly and closely connect MKK4 and MKK7 so that they can mediate this tyrosine/threonine phosphorylation. We showed that Filamin A (as well as Filamin B and C) associate with MKK7 and MKK4, but not with JNK1 itself
SIGNOR-260629
P14867
Q8TAB3
2
binding
up-regulates quantity by stabilization
0.364
Here, we found that PCDH19 binds the alpha subunits of GABAAR and regulates its surface availability and currents in cultured hippocampal neurons. The PCDH19 gene (Xp22.1) encodes the cell-adhesion protein protocadherin-19 (PCDH19) and is responsible for a neurodevelopmental pathology characterized by female-limited epilepsy, cognitive impairment and autistic features, the pathogenic mechanisms of which remain to be elucidated. Here, we identified a new interaction between PCDH19 and GABAA receptor (GABAAR) alpha subunits in the rat brain. PCDH19 shRNA-mediated downregulation reduces GABAAR surface expression and affects the frequency and kinetics of miniature inhibitory postsynaptic currents (mIPSCs) in cultured hippocampal neurons. 
SIGNOR-267217
P53350
Q9UBW7
1
phosphorylation
down-regulates quantity by destabilization
0.376
PLK1 and HOTAIR Accelerate Proteasomal Degradation of SUZ12 and ZNF198 during Hepatitis B Virus-Induced Liver Carcinogenesis|Similar analyses with ZNF198 identified two clusters of putative Plk1 phosphorylation sites in vitro. A cluster of serine residues at the N-terminus of ZNF198, S303, S305, and S309, and a cluster at the C-terminus, S1056 and S1064. The triple Ser to Ala mutant, S303A/S305A/S309A, consistently exhibited the lowest level of phosphorylation in vitro, in comparison to the double S1056A/S1064A mutant
SIGNOR-275560
Q99466
Q8IZL2
2
binding
up-regulates
0.86
We show here identification of two new members of human mam family (human mastermind-2 (hmam-2) and human mastermind-3 (hmam-3)), which retain characteristics similar to human mastermind-1 (hmam-1) and drosophila mastermind. Both hmam-2 and hmam-3 stabilize and participate in the dna-binding complex rbp-j/cbf-1 protein and the notch intracellular domains that serve as intermediates of the signaling. Both hmam-2 and hmam-3 enhanced the activation of transcription from a target promoter by notch signaling. However, we also show evidence that the activation of the target promoter by notch3 and notch4 is more efficiently potentiated by hmam-2 than by hmam-1 or -3.
SIGNOR-94279
Q96J84
P06241
0
phosphorylation
up-regulates activity
0.2
Here we have characterized Neph1, another SD component, as a novel substrate of SFK. Fyn interacts with and phosphorylates the cytoplasmic domain of Neph1 in vitro and in intact cells. Both tyrosine 637 and 638 of Neph1 are crucial for Neph1-Grb2 binding.
SIGNOR-262746
P20823
O60656
1
transcriptional regulation
up-regulates quantity by expression
0.267
Using gel shift and functional assays, HNF1alpha was demonstrated to bind to and activate the UGT1A8, -1A9, and -1A10 promoters. In contrast, Cdx2 bound to and activated the UGT1A8 and -1A10 promoters but could not activate the UGT1A9 promoter.
SIGNOR-253973
Q96J92
Q9UEW8
1
phosphorylation
up-regulates activity
0.507
Vitari et al. (76) and Moriguchi et al. (52) demonstrated that WNK4 bound and phosphorylated PASK at Thr-233 and Ser-373 in mammalian cells.| this phosphorylation event activates PASK, which in turn phosphorylates and activates NKCC1
SIGNOR-264641
Q9UQM7
Q05397
1
phosphorylation
up-regulates
0.272
Furthermore, activated camkii directly phosphorylated the recombinant cooh-terminal region of fak at a residue equivalent to ser-843.
SIGNOR-135631
Q14106
P06493
0
phosphorylation
up-regulates activity
0.2
Taken together, these observations strongly support the notion that several different CDK-cyclin complexes are involved in the phosphorylation of Tob2 at S254.A more detailed regulatory context of Tob2 phosphorylation at S254 is provided by our findings from mass-spec and in vitro kinase analyses that suggest connections to PP2B and PP2C phosphatases and CDK-cyclin complexes, particularly CDK1, CDK2, and CDK4 (Table 1; Supplemental Table S2).One possibility is that the phosphorylation of S254 helps stabilize the interaction of Tob2 with the Ccr4–Not complex, which could contribute to Tob2's ability to recruit the entire Ccr4–Not complex and thus further enhances deadenylation.
SIGNOR-273591
O00429
Q05655
0
phosphorylation
up-regulates
0.2
Drp1 was specifically phosphorylated in mitosis by cdk1/cyclin b on ser-585. Exogenous expression of unphosphorylated mutant drp1s585a led to reduced mitotic mitochondrial fragmentation.
SIGNOR-153148
P00533
P35637
1
phosphorylation
up-regulates activity
0.259
Thus, EGFR appears to mediate FUS nuclear translocation by phosphorylating Y6 and Y296 in FUS.
SIGNOR-279168
P62837
Q9C035
2
binding
up-regulates activity
0.457
Here, we show that TRIM5alpha functions as a RING-finger-type E3 ubiquitin ligase both in vitro and in vivo and ubiquitinates itself in cooperation with the E2 ubiquitin-conjugating enzyme UbcH5B. 
SIGNOR-271670
Q9NZJ0
Q86XK2
2
binding
down-regulates
0.544
We determined that the f-box protein fbxo11 interacts with cdt2,a dcaf protein that controls cell-cycle progression, and recruits cdt2 to the scf(fbxo11)complex to promote its proteasomal degradation.
SIGNOR-192325
P16591
P14923
1
phosphorylation
up-regulates activity
0.526
The tyrosine kinase Fer, which modifies beta-catenin Tyr142, lessening its association with alpha-catenin, phosphorylates plakoglobin Tyr549 and exerts the contrary effect: it raises the binding of plakoglobin to alpha-catenin. Fer stimulation, through modification of Tyr549, causes diminished binding of plakoglobin to components of desmosomes (desmoplakin) and increased interaction with adherens junction proteins (α-catenin)
SIGNOR-251134
P59595
P84022
2
binding
up-regulates activity
0.2
In this study, we demonstrate that SARS-associated coronavirus (SARS-CoV) nucleocapsid (N) protein potentiates transforming growth factor-beta (TGF-beta)-induced expression of plasminogen activator inhibitor-1 but attenuates Smad3/Smad4-mediated apoptosis of human peripheral lung epithelial HPL1 cells. The promoting effect of N protein on the transcriptional responses of TGF-beta is Smad3-specific. N protein associates with Smad3 and promotes Smad3-p300 complex formation while it interferes with the complex formation between Smad3 and Smad4. These findings provide evidence of a novel mechanism whereby N protein modulates TGF-beta signaling to block apoptosis of SARS-CoV-infected host cells and meanwhile promote tissue fibrosis.
SIGNOR-260434
Q93038
Q15628
2
binding
up-regulates
0.739
Dr3 induces apoptosis by tradd-mediated recruitment of fadd and caspase-8
SIGNOR-100480
P49336
P46527
1
phosphorylation
down-regulates
0.289
As a consequence, CDK8 overexpression promoted p27 degradation, whereas CDK8 knockdown reduced it.|We also show that CDK8 promotes phosphorylation of p27 at T187 and then induces p27 ubiquitination and degradation in a Skp2-dependent manner.
SIGNOR-278513
P17252
P18031
1
phosphorylation
up-regulates activity
0.249
PKC\u03b1 then phosphorylates and activates endothelial cell protein tyrosine phosphatase 1B (PTP1B) , .
SIGNOR-279257
Q9BQI3
P05198
1
phosphorylation
down-regulates activity
0.89
HRI is an intracellular heme sensor that coordinates heme and globin synthesis in erythropoiesis by inhibiting protein synthesis of globins and heme biosynthetic enzymes during heme deficiency. HRI is a heme-regulated kinase that phosphorylates the α-subunit of eIF2 in heme deficiency, impairing another round of translational initiation and thereby inhibiting translation.
SIGNOR-251817
P49841
P60484
1
phosphorylation
down-regulates activity
0.424
Gsk3beta Phosphorylates pten at thr-366 in intact cells phosphorylation of pten at thr-366 reduces the activity of pten in cells
SIGNOR-236641
P15336
Q02930
2
binding
up-regulates activity
0.631
CRE-BPa specifically binds to CRE as a homodimer or heterodimer with c-Jun or CRE-BP1. In CAT cotransfection experiments using CV-1 cells, transient expression of each of four CRE-BPa proteins caused a 1.6- to 3.4-fold increase of CRE-dependent transcription
SIGNOR-219655
Q00535
Q13224
1
phosphorylation
down-regulates quantity
0.443
Cdk5 phosphorylates NR2B at Ser1116 and controls surface level expression.|Reduction in Cdk5 activity, as well as disruption of Cdk5-NR2B interactions consistently increased NR2B surface levels and facilitated NMDA mediated synaptic function.
SIGNOR-278265
Q93008
P62979
1
cleavage
up-regulates quantity
0.504
Here we provide data suggesting that two of the four mammalian ubiquitin precursors, UBA52 and UBA80, are processed mostly post-translationally whereas the other two, UBB and UBC, probably undergo a combination of co- and post-translational processing. Using an unbiased biochemical approach we found that UCHL3, USP9X, USP7, USP5 and Otulin/Gumby/FAM105b are by far the most active DUBs acting on these precursors.
SIGNOR-270826
O15550
P15036
1
transcriptional regulation
down-regulates quantity by repression
0.2
Our findings reveal a dual role for UTX in suppressing acute myeloid leukaemia via repression of oncogenic ETS and upregulation of tumor suppressive GATA programs. several ETS transcription factors, including Elf4, Etv6, Erg, Fli1, Ets2, Spi1 and Elk3 were upregulated immediately after Utx loss in the preleukaemic phase
SIGNOR-260035
P17252
P05023
1
phosphorylation
down-regulates activity
0.329
Parathyroid hormone (PTH) inhibits Na+,K+-ATPase activity through protein kinase C- (PKC) and extracellular signal-regulated kinase- (ERK) dependent pathways and increases serine phosphorylation of the α1-subunit. These results suggest that PTH regulates Na(+),K(+)-ATPase by PKC and ERK-dependent alpha(1)-subunit phosphorylation and that the phosphorylation requires the expression of a serine at the 11 position of the Na(+),K(+)-ATPase alpha(1)-subunit.
SIGNOR-262941
P62993
Q13480
2
binding
up-regulates
0.873
The gab1 docking protein forms a platform for the assembly of a multiprotein signaling complex downstream from receptor tyrosine kinases. In general, recruitment of gab1 occurs indirectly, via the adapter protein grb2
SIGNOR-235917
Q16539
P04637
1
phosphorylation
up-regulates activity
0.773
P38 regulates p53, but also in p53-defective tumor cells rewire their checkpoint response and become dependent in the p38/mk2 pathway in mcf-7 cells, p38 kinase activated p53 more effectively than other members of the ras pathway. p53 and p38 kinase exist in the same physical complex, and co-expression of p38 stabilized p53 protein. In vitro, p38 kinase phosphorylated p53 at ser33 and ser46, a newly identified site.
SIGNOR-155246
Q9H6Z9
Q16665
1
hydroxylation
down-regulates quantity by destabilization
0.797
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-262000
Q02750
P06493
0
phosphorylation
down-regulates
0.496
P34cdc2 catalyzes the in vitro phosphorylation of mkk1 on both of these threonine residues and inactivates mkk1 enzymatic activity. Both sites are phosphorylated in vivo as well
SIGNOR-36116
P03372
P00533
0
phosphorylation
up-regulates
0.59
Activation of estrogen receptor-alpha (eralpha) by growth factors in the absence of estrogen is a well-documented phenomenon.Egfr tyrosine kinase in vitro stimulated the phosphorylation of recombinant er
SIGNOR-115734
Q9H2S1
Q05086
0
ubiquitination
up-regulates activity
0.286
UBE3A directly ubiquitinates SK2 in the C-terminal domain, which facilitates endocytosis.
SIGNOR-278527
Q92949
P41208
1
transcriptional regulation
up-regulates quantity by expression
0.353
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-266930
P52564
P19525
0
phosphorylation
up-regulates activity
0.2
Consistent with this observation, PKR was capable of activating MKK6 as assessed in a coupled kinase assay containing the components of the p38 MAPK pathway.|In vitro kinase assays revealed that MKK6 was efficiently phosphorylated by PKR, and this could be inhibited by 2-aminopurine.
SIGNOR-279707
Q86XR7
O60603
2
binding
up-regulates activity
0.429
To initiate the innate immune response, Toll-like receptors (TLRs) associate with cytoplasmic adaptor proteins through TIR (Toll/interleukin-1 receptor) domain interactions. The four principal signaling adaptor proteins include MyD88, MAL, TRIF and TRAM, and the fifth protein SARM, involved in negative regulation of TLR pathways, is usually considered a part of the TIR domain-containing adaptor protein group
SIGNOR-266747
Q07666
Q13882
0
phosphorylation
up-regulates
0.748
Sik/brk is the first identified tyrosine kinase that can phosphorylate sam68 and regulate its activity within the nucleus, where it resides during most of the cell cycle
SIGNOR-80020
Q86VP1
Q15025
0
relocalization
up-regulates activity
0.45
ABIN1 interacted with the A20 regulatory molecule TAX1BP1 and was essential for the recruitment of TAX1BP1 and A20 to the noncanonical IkappaB kinases TBK1 and IKKi in response to poly(I:C) transfection. ABIN1 and TAX1BP1 together disrupted the interactions between the E3 ubiquitin ligase TRAF3 and TBK1/IKKi to attenuate lysine 63-linked polyubiquitination of TBK1/IKKi.
SIGNOR-275735
P45984
P16615
1
phosphorylation
up-regulates activity
0.2
JNK2 Enhances SERCA2 Function in a CaMKII-Independent Manner..|We found that JNK2 and SERCA2 proteins are physically associated with each other, and that JNK2 directly elevates the maximal rate of the SERCA2 activity by phosphorylating SERCA2.
SIGNOR-279540
P13640
Q16236
0
transcriptional regulation
up-regulates quantity by expression
0.286
NFE2L2 is stabilized and translocates to the nucleus, where it dimerizes with sMAF proteins. This complex binds to AREs to mediate the transcription of genes involved in iron metabolism, GSH metabolism, and ROS detoxification. The expression of MT1G during ferroptosis is regulated by the NFE2L2 signaling pathway. In the context of cancer, particularly HCC, the upregulation of MT1G has been linked to resistance against sorafenib, a kinase inhibitor commonly used in cancer therapy
SIGNOR-279866
P27361
Q00613
1
phosphorylation
down-regulates
0.631
Sequential phosphorylation of hsf1 by mitogen-activated protein kinase and glycogen synthase kinase 3 at ser-303 and ser-307 represses transcriptional activation by heat shock factor-1.
SIGNOR-44999
O75197
Q14332
2
binding
up-regulates activity
0.688
Here we report that Wnt receptor Frizzled (Frz) and theco-receptors LRP5 and LRP6 (LRP5/6) directly interact with each other and this interaction is regulated by the LRP6 ectodomain.
SIGNOR-258968
P00748
P39900
0
cleavage
down-regulates quantity by destabilization
0.33
The data presented in this study show for the first time the degradation of Factor XII of the blood clotting system by matrix metalloproteinases. MMP-12, MMP-13, and MMP-14 cleave at Gly376Leu377|However, no activity of Factor XII can be observed after MMPinduced cleavage.
SIGNOR-263611
Q9NRM7
P11908
1
phosphorylation
down-regulates quantity by destabilization
0.2
 Recruitment of TRAF2 to PRPS1/2 requires phosphorylation of PRPS1 S285 or PRPS2 T285, which is mediated by low stiffness-activated large tumor suppressor (LATS)1/2 kinases.LATS1/2-dependent S/T285 phosphorylation is required for PRPS1/2 ubiquitination and degradation at low stiffness.
SIGNOR-276507
P52789
O14867
0
transcriptional regulation
up-regulates quantity
0.2
BACH1 activates transcription of Hexokinase 2 and Gapdh and increases glucose uptake, glycolysis rates, and lactate secretion, thereby stimulating glycolysis-dependent metastasis of mouse and human lung cancer cells.
SIGNOR-259338
P49841
Q7KZI7
1
phosphorylation
down-regulates activity
0.349
MARK family kinases can be activated by phosphorylation of a conserved threonine (Thr-208 in MARK2), and inactivated by phosphorylation of a serine (Ser-212), both in the activation loop of the catalytic domain. Activation is achieved by the kinases MARKK/TAO1 or LKB1, although the inactivating kinase was unknown. We show here that GSK3beta serves the role of the inhibitory kinase.
SIGNOR-276163
Q9UHD2
Q8N3F0
2
binding
down-regulates activity
0.2
Here we report that viral infection induced upregulation of INKIT, an inhibitor for NF-κB and IRF3 that restricted innate antiviral responses by blocking phosphorylation of p65 and IRF3. Viral infection induced IKK-mediated phosphorylation of INKIT at Ser58, resulting in its dissociation from the IKKs. INKIT is associated with IKKα/β and TBK1/IKKɛ and inhibits the recruitment and phosphorylation of p65 and IRF3, respectively. IKKα and TBK1 phosphorylate INKIT at Ser58, which results in disassociation of INKIT from IKKα or TBK1 and thereby allows for the subsequent recruitment and phosphorylation of p65 and IRF3
SIGNOR-273664
Q15669
P63000
1
relocalization
down-regulates activity
0.41
Therefore, RhoH functions as a Rac1 antagonist by inhibiting Rac1 translocation to the cell plasma membrane in the regulation of cell migration and F-actin assembly of HPCs
SIGNOR-259085
O43474
O14770
2
binding
up-regulates activity
0.268
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-267238
P42229
Q07817
1
transcriptional regulation
up-regulates quantity by expression
0.653
FLT3-ITD-TKD dual mutants induce hyperactivation of STAT5 and up-regulation of its downstream targets Bcl-x(L) and RAD51 in Ba/F3 cells
SIGNOR-261551
P67775
P29372
0
polyubiquitination
down-regulates quantity by destabilization
0.2
Here we report that MID1 catalyzes the in vitro ubiquitination of the catalytic subunit of PP2A (PP2Ac) in the absence of alpha4. In the presence of alpha4, the level of PP2Ac ubiquitination is reduced.The high molecular weight smear pattern was not as obvious, suggesting that domains within the C-terminal half of MID1 may contribute to the polyubiquitination of PP2Ac.
SIGNOR-271930
Q16539
O60381
1
phosphorylation
up-regulates
0.43
A mutation of the p38 map kinase phosphorylation site at aa 401 [(s-a)401hbp1] also triggered hbp1 protein instability. While protein stability was compromised by mutation, the specific activities of (s-a)401hbp1 and of wild-type hbp1 appeared comparable for transcriptional repression.
SIGNOR-119138
Q9UNE7
P29034
1
polyubiquitination
down-regulates quantity by destabilization
0.318
S100 protein itself is ubiquitinated by CHIP in a Ca2+-dependent manner.Ubiquitylated S100 proteins are shown as (Ub)n-S100A2 and (Ub)n-S100P. The association of the S100 proteins with CHIP provides a Ca2+-dependent regulatory mechanism for the ubiquitination and degradation of intracellular proteins by the CHIP-proteasome pathway.
SIGNOR-272918
P35568
P53350
0
phosphorylation
down-regulates activity
0.267
Phosphorylation of ser24 in the pleckstrin homology domain of insulin receptor substrate-1 by mouse pelle-like kinase/interleukin-1 receptor-associated kinase| irs-1 mutants s24d or s24e (mimicking phosphorylation at ser(24)) had impaired ability to associate with insulin receptors resulting in diminished tyrosine phosphorylation of irs-1 and impaired ability of irs-1 to bind and activate pi-3 kinase in response to insulin.
SIGNOR-135688
O95631
P60709
1
post transcriptional regulation
up-regulates quantity
0.28
Netrin-1 induces β-actin translation driven by its 3’UTR.
SIGNOR-268161
P53350
Q13485
1
phosphorylation
down-regulates quantity by destabilization
0.254
We observed that PLK1 could significantly promote the ubiquitination and degradation of Smad4 wild type, Smad4 S171A, Smad4 S187A, Smad4 S191A, respectively, but PLK1-induced the ubiquitination and degradation of Smad4 T197A were obviously inhibited (Fig. 1M).
SIGNOR-277591
P17612
P36382
1
phosphorylation
up-regulates activity
0.307
Gap junction channels formed of Cx40 are modulated by protein-kinase-A-mediated phosphorylation. Macroscopic conductance and permeability of Cx40 gap junctions is strongly increased by cAMP. two serine residues that can be phosphorylated by PKA, S120 and S345
SIGNOR-249982
O14672
P04626
1
cleavage
up-regulates activity
0.344
The ADAM proteases are best known for their role in shedding the extracellular domain of transmembrane proteins. Among the transmembrane proteins shed by ADAM10 are notch, HER2, E-cadherin, CD44, L1 and the EGFR ligands, EGF and betacellulin.
SIGNOR-259845
O14965
P17612
0
phosphorylation
up-regulates activity
0.512
Aurora2 is regulated by phosphorylation. phosphorylation occurs on a conserved residue, Threonine 288, within the activation loop of the catalytic domain of the kinase and results in a significant increase in the enzymatic activity. Threonine 288 resides within a consensus motif for the cAMP dependent kinase and can be phosphorylated by PKA in vitro.
SIGNOR-250337
Q05519
Q14114
1
post transcriptional regulation
up-regulates quantity by stabilization
0.2
We demonstrate that SFRS11 directly binds to the 3' UTR of LRP8 mRNA, as well as to the third exon of apoE mRNA, resulting in stabilization of these mRNAs, eventually deactivating JNK signaling.
SIGNOR-269670
Q02156
P49841
2
phosphorylation
down-regulates activity
0.268
However, PKCepsilon and Akt can also phosphorylate GSK3beta directly.
SIGNOR-279101
P42772
Q9HCX3
0
transcriptional regulation
down-regulates quantity by repression
0.28
Finally, we show that ZNF304 also directs transcriptional silencing of INK4-ARF in human embryonic stem cells.
SIGNOR-266099
Q99527
P63092
2
binding
up-regulates activity
0.377
GPCRs transduce their signal via G-protein heterotrimers (αβγ) that dissociate in free Gα-subunit protein and Gβγ-subunit protein complexes following ligand stimulation; the activated receptor induces a conformational change in the associated G protein α-subunit leading to release of GDP followed by binding of GTP and α-subunit dissociation from the receptor.
SIGNOR-251102
P50148
P30559
2
binding
up-regulates activity
0.552
OT binds to its cognate G protein–coupled receptor (OTR) and exerts diverse effects, including stimulation (Gs) or inhibition (Gi/o) of adenylyl cyclase, stimulation of potassium channel currents (Gi), and activation of phospholipase C (Gq).
SIGNOR-270332
Q86YJ5
P15151
1
ubiquitination
down-regulates quantity by destabilization
0.2
MARCH9, a member of the RING-CH family of transmembrane E3 ubiquitin ligases, down-regulates CD4, major histocompatibility complex-I (MHC), and ICAM-1 in lymphoid cells. To identify novel MARCH9 substrates, we used high throughput flow cytometry and quantitative mass spectrometry by stable isotope labeling by amino acids in cell culture (SILAC) to determine the differential expression of plasma membrane proteins in a MARCH9-expressing B cell line. This combined approach identified 13 potential new MARCH9 targets. 
SIGNOR-271530
P22455
P10767
2
binding
up-regulates
0.732
Our results establish an fgf binding profile for fgfr-4 with afgf having the highest affinity, followed by k-fgf/hst-1 and bfgf. In addition, fgf-6 was found to bind to fgfr-4 in ligand competition experiments. Ligands binding to fgfr-4 induced receptor autophosphorylation and phosphorylation of a set of cellular polypeptides.
SIGNOR-18570
P15509
P09603
2
binding
up-regulates
0.337
Granulocyte-macrophage colony-stimulating factor (gm-csf) is an important hematopoietic cytokine that exerts its effects by interaction with the gm-csf receptor (gmr) on the surface of responsive cells. The gm-csf receptor consists of two subunits: gmralpha, which binds gm-csf with low affinity, and gmrbeta, which lacks intrinsic ligand-binding capability but complexes with gmralpha to form a high-affinity receptor (gmralpha/beta).
SIGNOR-72455
O96017
P06400
1
phosphorylation
up-regulates activity
0.423
Phosphorylation of prb at ser612 by chk1/2 leads to a complex between prb and e2f-1 after dna damageprb inhibits cell cycle progression through interactions with the e2f family of transcription factors. Here, we report that dna damage induced not only the dephosphorylation of prb at cdk phosphorylation sites and the binding of prb to e2f-1, but also the phosphorylation of prb at ser612. Phosphorylation of prb at ser612 enhanced the formation of a complex between prb and e2f-1
SIGNOR-153908
P51608
Q13451
1
transcriptional regulation
down-regulates quantity by repression
0.306
These results are compatible with the hypothesis that MeCP2 associates with the Sgk and Fkbp5 promoters and has a repressive effect that is over-ridden by elevated glucocorticoids in response to stress.
SIGNOR-264542
P60484
Q9H4B4
0
phosphorylation
down-regulates activity
0.335
Plk3 phosphorylates pten on thr-366 and ser-370. Plk3-mediated phosphorylation facilitates pten stabilization, thereby negatively regulating the pi3k/pdk1/akt1 signaling axis
SIGNOR-168473
P42345
Q9UBS0
1
phosphorylation
up-regulates
0.834
In response to insulin and nutrients, mtorc1, consisting of mtor, raptor (regulatory-associated protein of mtor), and mlst8, is activated and phosphorylates eukaryotic initiation factor 4e-binding protein (4ebp) and p70 s6 kinase to promote protein synthesis and cell size.
SIGNOR-154821
P51608
O00141
1
transcriptional regulation
down-regulates quantity by repression
0.292
These results are compatible with the hypothesis that MeCP2 associates with the Sgk and Fkbp5 promoters and has a repressive effect that is over-ridden by elevated glucocorticoids in response to stress.
SIGNOR-264543
Q9UL68
O75182
2
binding
up-regulates activity
0.45
We found that the pan neuron-specific transcription factor Myt1-like (Myt1l) exerts its pro-neuronal function by direct repression of many different somatic lineage programs except the neuronal program. The repressive function of Myt1l is mediated via recruitment of a complex containing Sin3b by binding to a previously uncharacterized N-terminal domain.
SIGNOR-266774
P61006
Q9Y6E0
0
phosphorylation
up-regulates activity
0.275
In a screen for Rab8A kinases we identify TAK1 and MST3 kinases that can efficiently phosphorylate the Switch II residue Threonine72 (Thr72) in a similar manner as LRRK2 in vitro. |Overall our data suggests that the phosphorylation of Rab8A at Ser111 may influence Switch II-binding by regulators, thus disrupting interactions with its cognate GEF and moderately impairs its interaction with GAPs.|The antagonistic interplay between Ser111 phosphorylation and Thr72 phosphorylation is genetically concordant with how respective mutations in PINK1 and LRRK2 cause Parkinson’s disease
SIGNOR-260265