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0GRB14_HUMAN*   SwissProt (?) | Description Local Annotation Link Reference
General Information
NameGRB14
DescriptionGrowth factor receptor-bound protein 14 (grb14 adapter protein).
SpeciesHomo sapiens (NCBI taxonomy ID: 9606)
GO0005070 SH3/SH2 adaptor activity (TAS)
0007165 signal transduction (TAS)

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schematic display of those terms with internal associations, click the node and browse the corresponding GO term
Domain Architecture (Details)
InterPro domains unassigned to SynO:
Proteins with this domain are mostly RasGTP effectors and include guanine-nucleotide releasing factor in mammals . This factor stimulates the dissociation of GDP from the Ras-related RALA and RALB GTPases which allows GTP binding and activation of the GTPases. It interacts and acts as an effector molecule for R-ras.-Ras and Rap .The domain is also present in a number of other proteins among them the sexual differentiation protein in yeast that is essential for mating and meiosis and yeast adenylate cyclase. These proteins contain repeated leucine-rich (LRR) segments.
  IPR000159:RA
The pleckstrin homology (PH) domain is a domain of about 100 residues that occurs in a wide range of proteins involved in intracellular signaling or as constituents of the cytoskeleton .The function of this domain is not clear.everal putative functions have been suggested:binding to the beta/gamma subunit of heterotrimeric G proteins.inding to lipids..g. phosphatidylinositol-4.-bisphosphate.inding to phosphorylated Ser/Thr residues.ttachment to membranes by an unknown mechanism.It is possible that different PH domains have totally different ligand requirements.The 3D structure of several PH domains has been determined . All known cases have a common structure consisting of two perpendicular anti-parallel beta sheets.ollowed by a C-terminal amphipathic helix. The loops connecting the beta-strands differ greatly in length.aking the PH domain relatively difficult to detect. There are no totally invariant residues within the PH domain.Proteins reported to contain one more PH domains belong to the following families:Pleckstrin.he protein where this domain was first detected.s the major substrate of protein kinase C in platelets. Pleckstrin is one of the rare proteins to contains two PH domains.Ser/Thr protein kinases such as the Akt/Rac family.he beta-adrenergic receptor kinases.he mu isoform of PKC and the trypanosomal NrkA family.Tyrosine protein kinases belonging to the Btk/Itk/Tec subfamily.Insulin Receptor Substrate 1 (IRS-1).Regulators of small G-proteins like guanine nucleotide releasing factor GNRP (Ras-GRF) (which contains 2 PH domains).uanine nucleotide exchange proteins like vav.bl.oS and Saccharomyces cerevisiae CDC24.TPase activating proteins like rasGAP and BEM2/IPL2.nd the human break point cluster protein bcr.Cytoskeletal proteins such as dynamin (see ).aenorhabditis elegans kinesin-like protein unc-104 (see ).pectrin beta-chain.yntrophin (2 PH domains) and S. cerevisiae nuclear migration protein NUM1.Mammalian phosphatidylinositol-specific phospholipase C (PI-PLC) (see ) isoforms gamma and delta. Isoform gamma contains two PH domains.he second one is split into two parts separated by about 400 residues.Oxysterol binding proteins OSBP.. cerevisiae OSH1 and YHR073w.Mouse protein citron. putative rho/rac effector that binds to the GTP-bound forms of rho and rac.Several S. cerevisiae proteins involved in cell cycle regulation and bud formation like BEM2.EM3.UD4 and the BEM1-binding proteins BOI2 (BEB1) and BOI1 (BOB1).C. elegans protein MIG-10.C. elegans hypothetical proteins C04D8.1.06H7.4 and ZK632.12.S. cerevisiae hypothetical proteins YBR129c and YHR155w.
  IPR001849:Pleckstrin-like
The Src homology 2 (SH2) domain is a protein domain of about 100 amino-acid residues first identified as a conserved sequence region between the oncoproteins Src and Fps . Similar sequences were later found in many other intracellular signal-transducing proteins . SH2 domains function as regulatory modules of intracellular signalling cascades by interacting with high affinity to phosphotyrosine-containing target peptides in a sequence-specific.H2 domains recognize between 3-6 residues C-terminal to the phosphorylated tyrosine in a fashion that differs fromone SH2 domain to another.nd strictly phosphorylation-dependent manner . They are found in a wide variety of protein contexts e.g..n association with catalytic domains of phospholipase Cy (PLCy) and the non-receptor protein tyrosine kinases; within structural proteins such as fodrin and tensin; and in a group of small adaptor molecules..e Crk and Nck. The domains are frequently found as repeats in a single protein sequence and will then often bind both mono- and di-phosphorylated substrates. The structure of the SH2 domain belongs to the alpha+beta class.ts overall shape forming a compact flattened hemisphere. The core structural elements comprise a central hydrophobic anti-parallel beta-sheet.lanked by 2 short alpha-helices. The loop between strands 2 and 3 provides many of the binding interactions with the phosphate group of its phosphopeptide ligand.nd is hence designated the phosphate binding loop.he phosphorylated ligand binds perpendicular to the beta-sheet and typically interacts with the phosphate binding loop and a hydrophobic binding pocket that interacts with a pY+3 side chain. The N- and C-termini of the domain are close together in space and on the opposite face from the phosphopeptide binding surface and it has been speculated that this has facilitated their integration into surface-exposed regions of host proteins .
  IPR000980:SH2 motif
Pleckstrin homology (PH) domains are small modular domains that occur once.r occasionally several times.n a large variety of signalling proteins.here they serve as simple targeting domains that recognize only phosphoinositide headgroups . PH domains can target their host protein to the plasma and internal membranes through its association with phosphoinositides. PH domains have a partly opened beta-barrel topology that is capped by an alpha helix. Proteins containing PH domains include pleckstrin (N-terminal).hospholipase C delta-1.eta-spectrin.ynamin.on-of-sevenless.rp1.nc-89.app1 and Rac-alpha kinase.The structure of PH domains is similar to the phosphotyrosine-binding domain (PTB) found in IRS-1 (insulin receptor substrate 1).hc adaptor and Numb; to the Ran-binding domain.ound in Nup nuclear pore complex and Ranbp1; to the Enabled/VASP homology domain 1 (EVH1 domain).ound in Enabled.ASP (vasodilator-stimulated phosphoprotein).omer and WASP actin regulatory protein; to the third domain of FERM.ound in moesin.adixin.zrin.erlin and talin; and to the PH-like domain of neurobeachin.
  IPR011993:Pleckstrin homology-type
IPR000980:SH2 
Evalue:-27.2076083105017 
Location:437-526IPR000159:RA 
Evalue:-24.7212463990472 
Location:106-192IPR001849:PH 
Evalue:-12.8860569000244 
Location:235-342
SequencesProtein: GRB14_HUMAN (540 aa)
mRNA: NM_004490
Local Annotation
Synapse Ontology
endosome of the presynaptic compartment. A cellular structure that is involved in the transport of proteins in the neuron after the proteins are endocytosed from the outside to the inside of the cell.
sdb:0088 endosome  (Evidence:keywords)
KO assignmentNot mapped to KEGG
Loci Structure (Details)Loci index, Chromosomal location, Length, Possible relational loci clusterExon1: 121 residues, 165057578-165057938Exon2: 33 residues, 165059186-165059280Exon3: 31 residues, 165061763-165061851Exon4: 26 residues, 165061966-165062039Exon5: 41 residues, 165062129-165062246Exon6: 29 residues, 165067010-165067091Exon7: 34 residues, 165073210-165073306Exon8: 39 residues, 165073497-165073608Exon9: 48 residues, 165086735-165086873Exon10: 27 residues, 165089759-165089834Exon11: 42 residues, 165091769-165091891Exon12: 54 residues, 165112415-165112572Exon13: 46 residues, 165184442-165184575Exon14: 246 residues, 165185874-165186606Exon15: 2 residues, -Jump to GRB14_HUMAN  
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