TBXA2R Antibody – Rabbit Polyclonal

This gene encodes a member of the G protein-coupled receptor family. The protein interacts with thromboxane A2 to induce platelet aggregation and regulate hemostasis. A mutation in this gene results in a bleeding disorder. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2009]

TXA2-R: Receptor for thromboxane A2 (TXA2), a potent stimulator of platelet aggregation. The activity of this receptor is mediated by a G-protein that activates a phosphatidylinositol-calcium second messenger system. In the kidney, the binding of TXA2 to glomerular TP receptors causes intense vasoconstriction. Activates phospholipase C. Isoform 1 activates adenylyl cyclase. Isoform 2 inhibits adenylyl cyclase. Defects in TBXA2R are the cause of susceptibility to bleeding disorder platelet-type 13 (BDPLT13). BDPLT13 is a disorder characterized by reduced platelet aggregation and a tendency to mild mucocutaneous bleeding. Belongs to the G-protein coupled receptor 1 family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Receptor, GPCR; GPCR, family 1; Membrane protein, multi-pass; Membrane protein, integral

Chromosomal Location of Human Ortholog: 19p13.3

Cellular Component: integral to plasma membrane; acrosome; plasma membrane

Molecular Function: protein binding; guanyl-nucleotide exchange factor activity; thromboxane A2 receptor activity

Biological Process: response to drug; second-messenger-mediated signaling; platelet activation; response to lipopolysaccharide; G-protein coupled receptor protein signaling pathway; elevation of cytosolic calcium ion concentration; positive regulation of angiogenesis; positive regulation of vasoconstriction; positive regulation of smooth muscle contraction; blood coagulation; inflammatory response; response to nutrient; positive regulation of blood pressure; positive regulation of GTPase activity