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14
P09619
P19174
1
phosphorylation
up-regulates
0.859
Tyrosine phosphorylation has been shown to increase the enzymatic activity of plc-? / we show that the human pdgf ?- And ?-Receptors differ quantitatively in their abilities to associate with and phosphorylate plc-? And to stimulate inositol phosphate production.
SIGNOR-28179
P06493
P30307
2
phosphorylation
up-regulates
0.858
Phosphorylation at thr-48, thr-67, ser-122, thr-130, ser-168 and ser-214 occurs at g2 and g2-m transition and is catalyzed by cdk1. Ser-168 phosphorylation levels are lower than those at the other 5 cdk1 sites. Phosphorylation by cdk1 leads to increased activity.
SIGNOR-64960
P06493
P30291
2
phosphorylation
down-regulates
0.858
We have found also that the major M-phase kinases polo-like kinase 1 (Plk1) and Cdc2 are responsible for the phosphorylation of S53 and S123, respectively, and that in each case phosphorylation generates an unconventional phospho-degron (signal for degradation) that can be recognized by beta-TrCP
SIGNOR-123824
Q13535
O75943
1
phosphorylation
up-regulates activity
0.858
Here we demonstrate that atr but not atm phosphorylates the human rad17 (hrad17) checkpoint protein on ser(635) and ser(645) in vitro.The rfc-related checkpoint protein rad17, a phosphorylation substrate of atr, is critical for atr-mediated checkpoint signaling and cell survival.
SIGNOR-111248
P30307
P06493
2
dephosphorylation
up-regulates
0.858
Cdk1/cdc2 activation involves tyr15/thr14 dephosphorylation by cdc25c
SIGNOR-186621
Q14563
O75051
1
binding
up-regulates
0.858
Plexins form stable complexes with neuropilin-1 or -2.
SIGNOR-75168
P30291
P06493
2
phosphorylation
down-regulates
0.858
The wee1 kinase phosphorylates and inhibits cyclin-dependent kinase 1 (cdk1), thereby delaying entry into mitosis until appropriate conditions have been met
SIGNOR-139491
P05112
P31785
1
binding
up-regulates
0.858
The common gamma-chain (gamma(c)) is an indispensable subunit of the functional receptor complexes for il-4, il-7, il-9, and il-15 as well as il-2. Here we show that the gamma(c) is also shared with the il-21r complex
SIGNOR-108861
Q13616
Q9UBF6
1
binding
up-regulates activity
0.857
SAG was found to be the second family member of Rbx (RING box protein) or ROC (Regulator of cullins) or Hrt that is a component of SCF E3 ubiquitin ligase. Indeed, like ROC1/Rbx1/Hrt1, SAG binds to Cul1 and SAG-Cul1 complex has ubiquitin ligase activity to promote poly-ubiquitination of E2/Cdc34. 
SIGNOR-271444
O14976
Q00610
1
phosphorylation
up-regulates activity
0.857
Clathrin heavy chain (CHC) was phosphorylated at T606 by its association partner cyclin G-associated kinase (GAK). This phosphorylation was required for proper cell proliferation and tumor growth of cells implanted into nude mice. 
SIGNOR-275448
P01042
P30411
1
binding
up-regulates activity
0.857
BK binds receptor B2 (B2R) and triggers inflammation, edema, and symptoms of anaphylaxis.
SIGNOR-263554
O43557
Q92956
1
binding
up-regulates
0.857
A member of the tumor necrosis factor (tnf) superfamily, human tnfsf14 (htnfsf14)/hvem-l (herpes virus entry mediator ligand) was isolated as a cellular ligand for hvem/tr2 and human lymphotoxin beta receptor (ltbetar). Tnfsf14 induces apoptosis and suppresses tumor formation
SIGNOR-79328
P04141
P15509
1
binding
up-regulates
0.857
We have determined the nmr structure of a ligand-binding domain of the granulocyte colony-stimulating factor (g-csf) receptor comparisons between the spectra of the 15n-labelled domain with and without g-csf indicate that the major ligand-recognition site is on the fg loop just upstream of the wsxws sequence.
SIGNOR-72458
P01303
P25929
1
binding
up-regulates
0.857
Analogs of npy and pyy have been synthesized that contain a proline residue in position 34 of the molecule, i.e., [leu31, pro34]npy (fuhlendorff et al., 1990) or [pro34]pyy (grandt et al., 1994b), and are much more potent at y1 than y2receptors.
SIGNOR-56522
O14757
P30304
1
phosphorylation
down-regulates
0.857
The signal for ubiquitination after uv and ir exposure is created by phosphorylation of cdc25a mediated by chk1 and chk2, respectively. Chk1 is a major kinase phosphorylating cdc25a (ser76/124) and cdc25c (ser216).
SIGNOR-163134
O14490
Q9Y566
1
relocalization
up-regulates activity
0.857
SHANK proteins are ‘master’ scaffolding proteins that tether and organize intermediate scaffolding proteins. They are located at excitatory synapses, where they are crucial for proper synaptic development and function. SAPAP proteins subsequently bind to the PDZ domain of members of the SHANK protein family. SHANK proteins then bind to the actin cytoskeleton and to Homer protein, which in turn interacts with mGluRs. Through these extended links, PSD95, SAPAP, SHANK and Homer proteins form a quaternary complex that brings together mGluR and NMDAR complexes in the PSD (FIG. 3).
SIGNOR-264586
Q9UM47
Q06330
1
binding
up-regulates
0.857
Both notch 1 and notch 3 ics displace the co-repressor smrt from the dna-binding protein rbp-j kappa on the hes promoter. The latter observation suggests that both notch 3 ic and notch 1 ic can access rbp-j kappa in vivo, and that the difference in activation capacity instead stems from structural differences in the two ics when positioned on rbp-j kappa.
SIGNOR-86128
O60934
Q13315
2
binding
up-regulates
0.856
Nbs1 can also immobilize atm at the site of the dsb via direct binding of atm to a c-terminal atm interaction motif on nbs1 . the mre11/rad50/nbs1 (mrn) complex maintains genomic stability by bridging dna ends and initiating dna damage signaling through activation of the atm
SIGNOR-134508
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
Q13315
O60934
2
phosphorylation
up-regulates
0.856
In this report, we showed that atm phosphorylates a p95 peptide (ser-343) and a mre11 peptide (ser-264) in vitro, suggesting that atm may regulate the function of p95?Mre11? Rad50 repair complex in response to dna damage.
SIGNOR-73432
O96017
P30307
1
phosphorylation
down-regulates activity
0.856
Activated chk2 in turn phosphorylates cdc25c at serine-216 contributing to the g2/m checkpoints. Cds1 phosphorylates and inactivates cdc25 in vitro|CDC25C is phosphorylated on Ser 216 throughout interphase, but not in mitosis. This creates a binding site for 14‐3‐3 proteins | It has been suggested that 14‐3‐3 protein binding is responsible for retaining Cdc25C in the cytoplasm during interphase, thereby contributing to the prevention of premature initiation of mitotic events
SIGNOR-102779
P31321
P17612
1
binding
down-regulates activity
0.856
Inactive PKA exists as a holoenzyme, comprised of two regulatory (R) subunits and two catalytic subunits . In the presence of cAMP, the holoenzyme becomes active by binding two cAMP molecules cooperatively to each R subunit, resulting in a conformational change in the R subunits, thus releasing the two C subunits to phosphorylate downstream targets
SIGNOR-258753
Q9NP77
P24928
1
dephosphorylation
up-regulates activity
0.855
Phosphorylation of serine-2 (S2) and serine-5 (S5) of the C-terminal domain (CTD) of RNA polymerase II (RNAP II) is a dynamic process that regulates the transcription cycle and coordinates recruitment of RNA processing factors. The Fcp1 CTD phosphatase catalyzes dephosphorylation of S2-P.| Depletion of Ssu72 impairs transcription in vitro
SIGNOR-248815
P30304
P14635
1
dephosphorylation
up-regulates activity
0.855
Cdc25A dephosphorylates and activates CyclinE\u2013Cdk2, CyclinA\u2013Cdk2 and CyclinB\u2013Cdk1, whereas Cdc25B and Cdc25C primarily target CyclinB\u2013Cdk1  [4,5] .
SIGNOR-277137
Q00534
P46527
1
phosphorylation
up-regulates
0.855
Phosphorylation on ser-10 is the major site of phosphorylation in resting cells, takes place at the g(0)-g1 phase and leads to protein stability.p27(kip1) was phosphorylated by v-cyclin-cdk6 predominantly on ser10, which enhances its cytoplasmic localization.
SIGNOR-140401
P27361
Q16828
2
phosphorylation
down-regulates
0.855
Phosphorylation of serines 159 and 197 by erk1/2 enhances proteasomal degradation of mkp-3
SIGNOR-132975
Q9H492
Q9NT62
1
binding
up-regulates
0.855
Lc3-i is activated by the same atg7 involved in atg12 conjugation, transferred to atg3, a second e2-like enzyme, and finally conjugated to pe.
SIGNOR-191543
P31948
P08238
1
binding
down-regulates activity
0.855
Hsp90 chaperone cycle is tightly regulated by another group of proteins referred to as ‘co-chaperones'. Their stability does not depend on Hsp90 function but they interact with distinct Hsp90 conformational states, providing directionality to the Hsp90 cycle4. Furthermore, certain co-chaperones, such as HOP and Cdc37p50 inhibit the Hsp90 chaperone cycle, assisting in delivery of distinct sets of client proteins (steroid hormone receptors and kinases, respectively) to the Hsp90 chaperone machine.
SIGNOR-261412
Q16828
P27361
2
dephosphorylation
down-regulates
0.855
P-erk1/2 proteins were efficiently dephosphorylated in vitro by protein phosphatases 1 and 2a (pp1/2a) and mapk phosphatase 3 (mkp3).
SIGNOR-103149
P52333
P42229
1
phosphorylation
up-regulates
0.854
For these assays, coexpression of wt jak3 with stat5a was found to result in tyrosine phosphorylation of stat5a (lane 2) mediated by jak3, since stat5a coexpressed with the kinase-inactive k855a mutant form of jak3 was not tyrosine phosphorylated.
SIGNOR-182817
P01111
P15056
1
binding
up-regulates activity
0.854
The raf family of proteins (raf-1, a-raf, and b-raf) is serine/threonine kinases that bind to the effector region of ras-gtp, thus inducing translocation of the protein to the plasma membrane. Once there, raf proteins are activated and phosphorylated by different protein kinases.
SIGNOR-175219
P61088
Q13404
1
binding
up-regulates activity
0.854
Ubc13, the partner of rnf8 and rnf168, usually cooperates with an e2-like protein, uev1 (also known as ube2v1) or mms2 (also known as ube2v2), for the synthesis of lys63-linked polyubiquitin chains.
SIGNOR-166177
P01137
P37173
1
binding
up-regulates activity
0.853
A cdna encoding the tgf-beta type ii receptor protein has been isolated by an expression cloning strategy. The cloned cdna, when transfected into cos cells, leads to overexpression of an approximately 80 kd protein that specifically binds radioiodinated tgf-beta 1. Excess tgf-beta 1 competes for binding of radioiodinated tgf-beta 1 in a dose-dependent manner and is more effective than tgf-beta 2.
SIGNOR-236080
P62942
P36897
1
binding
down-regulates activity
0.853
Blocking fkbp12/type i receptor interaction with fk506 nonfunctional derivatives enhances the ligand activity, indicating that fkbp12 binding is inhibitory to the signaling pathways of the tgf beta family ligands
SIGNOR-236142
O14920
P19838
1
phosphorylation
down-regulates quantity by destabilization
0.853
Ikkbeta phosphorylates p105 resulting in its degradation, which releases tpl2 resulting in activation of the pro-proliferative map kinase- pathway.
SIGNOR-70473
P35225
P78552
1
binding
up-regulates
0.853
It is now known that this alternate receptor is a heterodimer, the type ii il-4 receptor or the il-13 receptor, which is comprised of IL-4R And IL-13R1.
SIGNOR-100750
P40933
P31785
1
binding
up-regulates
0.853
The common gamma-chain (gamma(c)) is an indispensable subunit of the functional receptor complexes for il-4, il-7, il-9, and il-15 as well as il-2. Here we show that the gamma(c) is also shared with the il-21r complex.
SIGNOR-108815
P01019
P30556
1
binding
up-regulates activity
0.852
AT(1) receptor (AngII type-1 receptor), a G-protein-coupled receptor, mediates most of the physiological and pathophysiological actions of AngII, and this receptor is predominantly expressed in cardiovascular cells, such as VSMCs (vascular smooth muscle cells)
SIGNOR-252293
P61586
Q16512
1
binding
up-regulates activity
0.852
PKNs bind to human pyrin and phosphorylate S208 and S242. Pyrin forms an inflammasome when mutant or in response to bacterial modification of the GTPase RhoA. We found that RhoA activated the serine-threonine kinases PKN1 and PKN2 that bind and phosphorylate pyrin. Phosphorylated pyrin bound to 14-3-3 proteins, regulatory proteins that in turn blocked the pyrin inflammasome.
SIGNOR-275465
P46020
P15735
1
binding
down-regulates activity
0.852
Phk is among the most complex of the protein kinases so far elucidated. It has one catalytic (gamma) subunit and three different regulatory (alpha, beta, and delta) subunits, a molecular mass of 1.3 X 106 daltons, and each holoenzyme molecule is presumed to contain four molecules of each subunit. The three regulatory subunits inhibit the phosphotransferase activity of the gamma subunit.
SIGNOR-267407
Q13253
P18075
1
binding
down-regulates activity
0.852
We report the crystal structure of the antagonist Noggin bound to BMP-7, which shows that Noggin inhibits BMP signalling by blocking the molecular interfaces of the binding epitopes for both type I and type II receptors.
SIGNOR-256484
Q13535
P54132
1
phosphorylation
up-regulates activity
0.852
It is noteworthy that an active BLM seems to be unnecessary to the activation of BRCA1, either after gamma-rays or HU, even though BRCA1 and BLM helicase are activated by ATR in response to stalled replication, and despite the fact that they colocalize after replication arrest.|These results show that BLM phosphorylation by ATR after replication fork arrest is not important for its relocalization.
SIGNOR-278978
Q13043
Q7L9L4
1
phosphorylation
up-regulates
0.851
Mob1, which forms a complex with lats1/2, is also phosphorylated by mst1/2, resulting in an enhanced lats1/2mob1 interaction.
SIGNOR-175841
Q9UQK1
P13807
1
binding
up-regulates
0.851
In the liver, PTG and PPP1R3B(GL)are expressed at roughly equivalent levels [55], and they jointly promote hepatic glycogen mobilization and storage. PTG overexpression significantly increased glycogen content, mainly due to its ability to promote the redistribution of PP1 and glycogen synthase to glycogen granules, significantly increasing GS activity and glycogen synthesis (Figure 2)
SIGNOR-271733
Q02410
O14936
1
binding
up-regulates activity
0.851
Interaction with Munc18 increases Mint1 binding to CASK.
SIGNOR-264041
P22223
P35222
1
binding
up-regulates activity
0.851
At its C-terminus, cadherin interacts with β-catenin, which dynamically associates with α-catenin, a direct binding partner of filamentous actin
SIGNOR-265865
P27986
P42338
1
binding
up-regulates activity
0.851
Signal transduction pathways triggered by Tie2 have been extensively examined. Tyr-1101of Tie2 directly associates in a phosphotyrosine (pTyr)-dependent manner with the p85 regulatory subunit of phosphatidylinositol (PI) 3-kinase, which in turn activate PI 3-kinase, leading to cell motility and survival
SIGNOR-242640
P06241
P35222
1
phosphorylation
down-regulates activity
0.851
Interaction of beta-catenin with alpha-catenin is regulated by the phosphorylation of beta-catenin Tyr-142. This residue can be phosphorylated in vitro by Fer or Fyn tyrosine kinases.  Transfection of these kinases to epithelial cells disrupted the association between both catenins.
SIGNOR-251162
Q86YC2
P38398
1
binding
up-regulates activity
0.851
The BRCA1-PALB2 interaction is required for homologous recombination repair.Here, we report that PALB2, the partner and localizer of BRCA2, binds directly to BRCA1, and serves as the molecular scaffold in the formation of the BRCA1-PALB2-BRCA2 complex.
SIGNOR-244487
O14757
P30307
1
phosphorylation
down-regulates quantity by destabilization
0.85
The signal for ubiquitination after uv and ir exposure is created by phosphorylation of cdc25a mediated by chk1 and chk2, respectively. Chk1 is a major kinase phosphorylating cdc25a (ser76/124) and cdc25c (ser216).
SIGNOR-163158
Q13188
Q9H8S9
1
phosphorylation
up-regulates
0.85
Mob1, which forms a complex with lats1/2, is also phosphorylated by mst1/2, resulting in an enhanced lats1/2 mob1 interaction.
SIGNOR-175809
O00206
Q8IUC6
1
binding
up-regulates activity
0.85
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-252067
P31749
P46527
1
phosphorylation
down-regulates
0.85
Because Thr198-phosphorylated p27Kip1 was localized only in the cytoplasm, Akt might promote 14-3-3 binding to p27Kip1 by phosphorylation at Thr198, allowing its cytoplasmic localization and degradation.
SIGNOR-88294
P04626
P62993
1
relocalization
up-regulates
0.85
All erbb ligands and receptors couple to activation of the ras-mapk pathway, either directly through sh2 domain-mediated recruitment of grb-2 or indirectly through ptb domain-mediated binding of the shc adaptor
SIGNOR-121968
P46937
Q99594
1
binding
up-regulates
0.85
When dephosphorylated, yap/taz enter nuclei and induce gene transcription by interacting with transcription factors tead14.
SIGNOR-201471
P42345
O75385
1
phosphorylation
down-regulates activity
0.849
mTORC1, which is often referred to as the gatekeeper to autophagy, is a key regulator of the Ulk1-Atg13-FIP200 kinase complex.11,14,25 Under nutrient-rich conditions, active mTORC1 associates with and inactivates the Ulk1-Atg13-FIP200 complex by phosphorylating Ulk1 and Atg13.
SIGNOR-183903
P42345
O00141
1
phosphorylation
up-regulates
0.849
Mtor phosphorylated sgk1, but not sgk1-s422a, in vitro. Sgk1 phosphorylated p27 in vitro. These data implicate sgk1 as an mtorc1 (mtor-raptor) substrate. mtor may promote g1 progression in part through sgk1 activation
SIGNOR-179113
Q9P1A6
Q9UPX8
1
relocalization
up-regulates activity
0.849
SHANK proteins are ‘master’ scaffolding proteins that tether and organize intermediate scaffolding proteins. They are located at excitatory synapses, where they are crucial for proper synaptic development and function. SAPAP proteins subsequently bind to the PDZ domain of members of the SHANK protein family. SHANK proteins then bind to the actin cytoskeleton and to Homer protein, which in turn interacts with mGluRs. Through these extended links, PSD95, SAPAP, SHANK and Homer proteins form a quaternary complex that brings together mGluR and NMDAR complexes in the PSD (FIG. 3).
SIGNOR-264590
Q8IZI9
Q8IU57
1
binding
up-regulates
0.849
Il-28 and il-29 interacted with a heterodimeric class ii cytokine receptor that consisted of il-10 receptor beta (il-10rbeta) and an orphan class ii receptor chain, designated il-28ralpha.
SIGNOR-96243
P20783
Q16288
1
binding
up-regulates
0.849
Trkc, a new member of the trk family of tyrosine protein kinases, is a receptor for neurotrophin-3.
SIGNOR-20699
Q96EP0
Q9Y6K9
1
polyubiquitination
up-regulates activity
0.849
Involvement of Gln271 and Asp275 of NEMO in LUBAC-mediated linear polyubiquitination.vHOIP NZF1 also recognizes NEMO, and this recognition is involved in linear polyubiquitination of NEMO. Linear chains conjugated to NEMO are recognized by NEMO in trans on another IKK complex, thereby inducing multimerization of the IKK complex and trans autophosphorylation of IKK2.
SIGNOR-272052
O14763
Q13158
1
binding
up-regulates
0.849
Fadd binds to ligated trailr1 or trail-r2
SIGNOR-98565
Q9Y2X7
Q15052
1
binding
up-regulates activity
0.849
Screening for potential mediators of this effect resulted in the identification of the Rac1-specific GTPase-activating protein ARHGAP17 and the guanine nucleotide exchange factor ARHGEF6 as new PKA and PKG substrates in platelets. We mapped the PKA/PKG phosphorylation sites to serine 702 on ARHGAP17 using Phos-tag gels and to serine 684 on ARHGEF6. |we show that ARHGEF6 is constitutively linked to GIT1, a GAP of Arf family small G proteins, and that ARHGEF6 phosphorylation enables binding of the 14-3-3 adaptor protein to the ARHGEF6/GIT1 complex.
SIGNOR-272165
P24941
Q08999
1
phosphorylation
down-regulates
0.849
When expressed in u2os cells, the phosphorylation-deficient mutant p130(delta)(cdk4), in which the cdk4 specific sites were mutated to alanine residues, imposed a more sustained g1 arrest than a constitutively active prb(delta)(cdk), known to repress all cellular e2f activity
SIGNOR-87492
O00468
O75096
1
binding
up-regulates activity
0.849
AGRN is released by the nerve and binds to LRP4, which then binds to MuSK. This interaction leads to MuSK autophosphorylation and activation of its kinase function, leading to anterograde signalling by subsequent phosphorylation of DOK7 (not shown), which binds MuSK as a dimer.
SIGNOR-273849
Q9NR50
P20042
1
guanine nucleotide exchange factor
up-regulates activity
0.848
EIF2B converts the protein synthesis initiation factor 2 (eIF2) from an inactive GDP-bound form to an active eIF2-GTP complex owing to its guanine nucleotide exchange factor (GEF) activity.
SIGNOR-269131
Q9Y6K9
P25963
1
phosphorylation
down-regulates activity
0.848
IκB components are phosphorylated on two amino-terminal serine residues by the IκB kinase (IKK) complex, composed of two catalytic proteins, IKKα and IKKβ, and the regulatory subunit IKKγ (NEMO, IKBKG). This modification targets IκB for degradation by the proteasome, allowing the release and nuclear translocation of NF-κB.
SIGNOR-280462
Q99836
P51617
1
binding
up-regulates activity
0.848
Interleukin-1 (il-1) stimulates the association of the il-1 receptor-associated protein kinase (irak) with the heterodimer of il-iri and il-iracp via the adapter protein myd88. Myd88 binds to both irak (il-1 receptor-associated kinase) and the heterocomplex (the signaling complex) of the two receptor chains and thereby mediates the association of irak with the receptor.
SIGNOR-67143
Q92934
Q07817
2
binding
down-regulates activity
0.848
Bad binds more strongly to Bcl-x, than Bcl-2 in mammalian cells, and it reversed the death repressor activity of Bcl-x,, but not that of Bcl-2. When Bad dimerized with Bcl-x,, Bax was displaced and apoptosis was restored.
SIGNOR-249617
Q07817
Q92934
2
binding
up-regulates activity
0.848
Bad dimerizes with bcl-xl at the mitochondrial membrane where it exert its killing effects. Phosphorylation of bad promotes its binding to 14-3-3 protein, which may sequester bad from bcl-xl, thus promoting cell cells survival.
SIGNOR-81125
Q13951
Q01196
1
binding
up-regulates quantity by stabilization
0.848
The RUNX genes encode the α subunit of the transcription factor PEBP2/CBF. The β subunit consists of the non-RUNX protein PEBP2β. We found that RUNX1/AML1, which is essential for hematopoiesis, is continuously subjected to proteolytic degradation mediated by the ubiquitin–proteasome pathway. When PEBP2β is present, however, the ubiquitylation of RUNX1 is abrogated and this causes a dramatic inhibition of RUNX1 proteolysis.
SIGNOR-255742
Q92917
O60231
1
binding
up-regulates quantity
0.848
In this report, we showed that GPKOW interacted directly with the DHX16/hPRP2 and with RNA. Immuno-depletion of GPKOW from HeLa nuclear extracts resulted in an inactive spliceosome that still bound DHX16.
SIGNOR-266312
Q96GD4
O14777
1
phosphorylation
down-regulates
0.848
To determine whether the combinatorial regulation of the kmn network by aurora b observed in vitro is critical to controlling kinetochore-microtubule attachments in vivo, we next investigated the effect of the phosphomimetic (to aspartate) and nonphosphorylatable (to alanine) mutants of dsn1, knl1, and ndc80 in vertebrate cells. We predicted that both types of mutations in critical phosphorylation sites would affect chromosome segregation, since preventing the inactivation of inappropriately attached kinetochores by aurora b (in the nonphosphorylatable mutant) or constitutively inactivating this attachment (in the phosphomimetic mutant).
SIGNOR-165558
Q9Y2T1
P35222
1
binding
down-regulates
0.848
It has been found that a multiprotein complex assembled by the cytoplasmic component conductin induces degradation of cytoplasmic beta-catenin. The complex includes apc, the serine/threonine kinase gsk3 beta, and beta-catenin, which bind to conductin at distinct domains.
SIGNOR-79947
Q15811
P60953
1
guanine nucleotide exchange factor
up-regulates activity
0.848
Significantly, here we identify the long isoform of ITSN-1, which has Cdc42 GEF activity| We propose that GCC88 recruits ITSN-1-L to the TGN, which in turn activates Cdc42 at the trans-face of the Golgi (Figure 9A).
SIGNOR-260612
P29459
P29460
1
binding
up-regulates
0.848
However, a proper conformation required for high affinity binding is achieved only when p40 is associated with a p35 subunit or another p40 subunit. When p40 is associated with a p35 subunit, the heterodimer acts as an agonist mediating biologic activity. However, when p40 associates with another p40, the homodimer behaves as an antagonist in vitro
SIGNOR-27619
P20936
P01112
1
binding
down-regulates
0.848
The Ras protein sits at the center of a many-tiered cascade of molecular interactions. Most of the proteins along this cascade are activated by phosphorylation, but Ras uses a bound guanine nucleotide to toggle between its “on” and “off” states. Ras hydrolyzes GTP to GDP fairly quickly, turning itself “off,” and a collection of GTPase-activating proteins (GAPs) speed up the processthe complex between human h-ras bound to guanosine diphosphate and the guanosine triphosphatase (gtpase)-activating domain of the human gtpase-activating protein p120gap (gap-334) in the presence of aluminum fluoride was solved.
SIGNOR-68990
Q8IZI9
Q08334
1
binding
up-regulates
0.848
Il-28 and il-29 interacted with a heterodimeric class ii cytokine receptor that consisted of il-10 receptor beta (il-10rbeta) and an orphan class ii receptor chain, designated il-28ralpha.
SIGNOR-96246
O15111
Q04206
1
phosphorylation
up-regulates activity
0.847
Chromatographic fractionation of cell extracts allowed the identification of two distinct enzymatic activities phosphorylating ser-536. Peak 1 represents an unknown kinase, whereas peak 2 contained ikkalpha, ikkbeta, ikkepsilon, and tbk1. collectively, our results provide evidence for at least five kinases that converge on ser-536 of p65 and a novel function for this phosphorylation site in the recruitment of components of the basal transcriptional machinery to the interleukin-8 promoter.
SIGNOR-129931
P45974
P0CG48
1
cleavage
up-regulates quantity
0.847
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-270822
P01116
P04049
1
binding
up-regulates
0.847
Among other effectors, active ras binds and activates the raf kinase, iniziating a kinase cascade involving serine phosporylation of mek1/2 (mapkk) and tyrosine and threonine phosphorylation of erk1/2. the raf family of proteins (raf-1, a-raf, and b-raf) is serine/threonine kinases that bind to the effector region of ras-gtp, thus inducing translocation of the protein to the plasma membrane. Once there, raf proteins are activated and phosphorylated by different protein kinases.. Association of ras with the mapk kinase kinase, raf, initiates the raf mek erk map kinase cascade.
SIGNOR-78911
Q9NT62
O95166
1
binding
up-regulates activity
0.847
Three human atg8 (hatg8) homologs, lc3, gabarap, and gate-16, have been characterized as modifiers in reactions mediated by hatg7 (an e1-like enzyme) and hatg3 (an e2-like enzyme)
SIGNOR-141868
Q96JC9
P55199
1
binding
up-regulates
0.847
Positive regulation of ell elongation activity depends on stable binding of eaf1 to the ell n terminus
SIGNOR-138516
P19883
P08476
1
binding
down-regulates activity
0.846
Blocking activin action by pre-treatment with its binding protein, follistatin, modifies the inflammatory cytokine cascade, and reduces the severity of the subsequent inflammatory response and mortality
SIGNOR-235134
P01137
P36897
1
binding
up-regulates activity
0.846
TGFbeta signals are transmitted via a cell surface receptor complex consisting of the TGFbeta type I receptor (TbetaRI) and TGFbeta type II receptor (TbetaRII). To initiate signal transduction, TGFbeta binds to TbetaRII, which in turn recruits TbetaRI, leading to the formation of a tetrameric receptor complex.
SIGNOR-249548
Q13315
Q14676
1
phosphorylation
up-regulates
0.846
We show that, in response to ionizing radiation, mdc1 is hyperphosphorylated in an atm-dependent manner, and rapidly relocalizes to nuclear foci that also contain the mre11 complex, phosphorylated histone h2ax and 53bp1.
SIGNOR-98798
Q92569
P42336
1
binding
up-regulates
0.846
The region between the src homology 2 (sh2) domains of p55pik bound to the nh2 terminus region of p110alpha
SIGNOR-53597
Q02224
O60566
1
binding
up-regulates activity
0.846
Without CENP-E, diminished levels of BubR1 are recruited to kinetochores and BubR1 kinase activity remains at basal levels. CENP-E binds to and directly stimulates the kinase activity of purified BubR1 in vitro. Thus, CENP-E is required for enhancing recruitment of its binding partner BubR1 to each unattached kinetochore and for stimulating BubR1 kinase activity, implicating it as an essential amplifier of a basal mitotic checkpoint signal.
SIGNOR-252043
Q9NS91
P12004
1
ubiquitination
up-regulates activity
0.846
Second, these findings suggest the following model (XREF_FIG) : upon replication fork stalling at cisplatin induced DNA lesions, the RAD18 and RAD6 complex ubiquitylates PCNA on Lys164.|The DNA damage-activated E3 ubiquitin ligase RAD18 promotes repair of interstrand DNA cross-links by ubiquitylating PCNA and recruiting FANCL to chromatin.
SIGNOR-278612
Q15788
P03372
1
binding
up-regulates
0.845
Steroid receptor co-activator (src1) is one of a number of transcriptional co-activators that are capable of potentiating the activity of nuclear receptors including the oestrogen receptor (er).
SIGNOR-54442
Q13315
O14757
1
phosphorylation
up-regulates
0.845
Atr (predominantly) or atm (to a lesser extent) phosphorylates chk1 at ser317/345, directly leading to activation.
SIGNOR-163106
P38398
Q9BXW9
1
ubiquitination
up-regulates activity
0.845
The major genetic evidence supporting ubiquitin ligase function for BRCA1 in vivo comes from studies on the FANCD2 protein. Whereas in wild‐type cells the FANCD2 protein co‐localizes with BRCA1 in nuclear foci and becomes monoubiquitylated in response to DNA damage, HCC1937 cells, which encode a mutated form of BRCA1, are largely defective for both monoubiquitylation of FANCD2 and foci formation
SIGNOR-263236
Q9BXL7
O95999
1
binding
up-regulates
0.845
Card11 cooperates with bcl10 in a card domain-dependent manner.;These results implicate card11 in factor- specific activation of nf-kappab
SIGNOR-93869
P61970
P37198
1
binding
up-regulates activity
0.845
Our data suggest that NTF2 interacts directly with NPC protein 1362 and exerts its effect at a relatively late step in the nuclear protein import pathway. We obtained a cDNA encoding NTF2 and showed that the recombinant protein restores transport activity to p62-pretreated cytosol.
SIGNOR-261255
P51955
Q13257
1
phosphorylation
down-regulates activity
0.845
We demonstrated that overexpression of Nek2 can enhance the ability of Mad2 to cause delays in cell division.|We have demonstrated that Nek2 can bind and phosphorylate Mad2 and Cdc20.
SIGNOR-278446
P01374
P36941
1
binding
up-regulates
0.845
These experiments point toward the lt-alpha 1/beta 2 complex as the predominant membrane form of lt on the lymphocyte surface, and this complex is the primary ligand for the lt-beta receptor.
SIGNOR-35708
P04629
P29353
1
binding
up-regulates
0.844
Autophosphorylated trka binds directly to plc?, Abl, and shc.
SIGNOR-75408
P25942
Q12933
1
binding
up-regulates activity
0.844
Cd40, a tumor necrosis factor receptor (tnfr) family member, forms a complex containing adaptor molecules traf2 and traf3.
SIGNOR-179473
P01111
P42336
1
binding
up-regulates activity
0.844
Grb2 binds and activates sos, which then activates ras, and this activates p110 independently of p85./it was also described that ras interacts with pi3k in a direct manner./lysine residue 227 is essential for the interaction of ras with pi3k
SIGNOR-175222
Q9Y4P1
P60520
1
cleavage
up-regulates activity
0.844
In mammals, at least three atg8 homologs, lc3, gabarap, and gate-16, have been identified (fig. 1a), all of which have structural ubiquitin folds (1416). In vivo and in vitro biochemical analyses have shown that human atg4b is an authentic cysteine protease essential for cleavage of the c terminus of each atg8 homolog to expose the c-terminal gly
SIGNOR-141932