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Human Interaction Network Ontology
Last uploaded:
June 27, 2014
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| Id | http://purl.obolibrary.org/obo/HINO_0022249
http://purl.obolibrary.org/obo/HINO_0022249
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|---|---|
| Preferred Name | DAP12 signaling |
| Definitions |
In response to receptor ligation, the tyrosine residues in DAP12's immunoreceptor tyrosine-based activation motif (ITAM) are phosphorylated by Src family kinases. These phosphotyrosines form the docking site for the protein tyrosine kinase SYK in myeloid cells and SYK and ZAP70 in NK cells. DAP12-bound SYK autophosphorylates and phosphorylates the scaffolding molecule LAT, recruiting the proximal signaling molecules phosphatidylinositol-3-OH kinase (PI3K), phospholipase-C gamma (PLC-gamma), GADS (GRB2-related adapter downstream of SHC), SLP76 (SH2 domain-containing leukocyte protein of 76 kDa), GRB2:SOS (Growth factor receptor-bound protein 2:Son of sevenless homolog 1) and VAV. All of these intermediate signalling molecules result in the recruitment and activation of kinases AKT, CBL (Casitas B-lineage lymphoma) and ERK (extracellular signal-regulated kinase), and rearrangement of the actin cytoskeleton (actin polymerization) finally leading to cellular activation. PLC-gamma generates the secondary messengers diacylglycerol (DAG) and inositol-1,4,5-trisphosphate (InsP3), leading to activation of protein kinase C (PKC) and calcium mobilization, respectively (Turnbull & Colonna 2007, Klesney-Tait et al. 2006).
Edited: Garapati, P V, 2012-05-25
Reviewed: Lanier, Lewis L, 2012-08-09
Authored: Garapati, P V, 2012-05-25
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| Type | http://www.w3.org/2002/07/owl#Class |
All Properties
| label |
DAP12 signaling
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|---|---|
| comment |
In response to receptor ligation, the tyrosine residues in DAP12's immunoreceptor tyrosine-based activation motif (ITAM) are phosphorylated by Src family kinases. These phosphotyrosines form the docking site for the protein tyrosine kinase SYK in myeloid cells and SYK and ZAP70 in NK cells. DAP12-bound SYK autophosphorylates and phosphorylates the scaffolding molecule LAT, recruiting the proximal signaling molecules phosphatidylinositol-3-OH kinase (PI3K), phospholipase-C gamma (PLC-gamma), GADS (GRB2-related adapter downstream of SHC), SLP76 (SH2 domain-containing leukocyte protein of 76 kDa), GRB2:SOS (Growth factor receptor-bound protein 2:Son of sevenless homolog 1) and VAV. All of these intermediate signalling molecules result in the recruitment and activation of kinases AKT, CBL (Casitas B-lineage lymphoma) and ERK (extracellular signal-regulated kinase), and rearrangement of the actin cytoskeleton (actin polymerization) finally leading to cellular activation. PLC-gamma generates the secondary messengers diacylglycerol (DAG) and inositol-1,4,5-trisphosphate (InsP3), leading to activation of protein kinase C (PKC) and calcium mobilization, respectively (Turnbull & Colonna 2007, Klesney-Tait et al. 2006).
Edited: Garapati, P V, 2012-05-25
Reviewed: Lanier, Lewis L, 2012-08-09
Authored: Garapati, P V, 2012-05-25
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| prefLabel |
DAP12 signaling
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| located_in | |
| definition source |
Reactome, http://www.reactome.org
Pubmed17110943
Pubmed17220916
Pubmed15884055
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| prefixIRI |
HINO:0022249
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| seeAlso |
ReactomeREACT_147814
Reactome Database ID Release 432424491
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| subClassOf | |
| type | |
| has_part |
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