FUNCTION: [Isoform 1]: Cell surface receptor that plays important roles in innate and adaptive immunity by amplifying inflammatory responses (PubMed:10799849, PubMed:21393102). Upon activation by various ligands such as PGLYRP1, HMGB1 or HSP70, multimerizes and forms a complex with transmembrane ada...
FUNCTION: [Isoform 1]: Cell surface receptor that plays important roles in innate and adaptive immunity by amplifying inflammatory responses (PubMed:10799849, PubMed:21393102). Upon activation by various ligands such as PGLYRP1, HMGB1 or HSP70, multimerizes and forms a complex with transmembrane adapter TYROBP/DAP12 (PubMed:25595774, PubMed:17568691, PubMed:29568119). In turn, initiates a SYK-mediated cascade of tyrosine phosphorylation, activating multiple downstream mediators such as BTK, MAPK1, MAPK3 or phospholipase C-gamma (PubMed:21659545, PubMed:14656437). This cascade promotes the neutrophil- and macrophage-mediated release of pro-inflammatory cytokines and/or chemokines, as well as their migration and thereby amplifies inflammatory responses that are triggered by bacterial and fungal infections (PubMed:17568691, PubMed:17098818). By also promoting the amplification of inflammatory signals that are initially triggered by Toll-like receptor (TLR) and NOD-like receptor engagement, plays a major role in the pathophysiology of acute and chronic inflammatory diseases of different etiologies including septic shock and atherosclerosis (PubMed:21393102, PubMed:11323674). {ECO:0000269|PubMed:10799849, ECO:0000269|PubMed:11323674, ECO:0000269|PubMed:14656437, ECO:0000269|PubMed:17098818, ECO:0000269|PubMed:17568691, ECO:0000269|PubMed:21393102, ECO:0000269|PubMed:21659545, ECO:0000269|PubMed:25595774, ECO:0000269|PubMed:29568119}.; FUNCTION: [Isoform 2]: Acts as a decoy receptor, counterbalancing TREM1 pro-inflammatory activity through the neutralization of its lignad. {ECO:0000269|PubMed:26561551}.
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GO - Biological processes (BP):
acute inflammatory response [GO:0002526]; adaptive immune response [GO:0002250]; humoral immune response [GO:0006959]; innate immune response [GO:0045087]; intracellular signal transduction [GO:0035556]; neutrophil chemotaxis [GO:0030593]; neutrophil-mediated killing of gram-negative bacterium [GO:0...
acute inflammatory response [GO:0002526]; adaptive immune response [GO:0002250]; humoral immune response [GO:0006959]; innate immune response [GO:0045087]; intracellular signal transduction [GO:0035556]; neutrophil chemotaxis [GO:0030593]; neutrophil-mediated killing of gram-negative bacterium [GO:0070945]
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GO - Molecular function (MF):
scaffold protein binding [GO:0097110]; signaling receptor activity [GO:0038023]...
scaffold protein binding [GO:0097110]; signaling receptor activity [GO:0038023]
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GO - Cellular component (CC):
extracellular region [GO:0005576]; integral component of membrane [GO:0016021]; plasma membrane [GO:0005886]...
extracellular region [GO:0005576]; integral component of membrane [GO:0016021]; plasma membrane [GO:0005886]
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