GNRH Receptor

GNRH Receptor (Gonadotropin-releasing hormone receptor, GNRHR), also known as the luteinizing hormone releasing hormone receptor (LHRHR), is a member of the seven-transmembrane, G-protein coupled receptor (GPCR) family. It is expressed on the surface of pituitary gonadotrope cells as well as lymphocytes,breast, ovary, and prostate. GNRH Receptor is a 60 kDa G protein-coupled receptor and resides primarily in the pituitary and is responsible for eliciting the actions of LHRH after its release from the hypothalamus. Upon activation, GNRH Receptor stimulates tyrosine phosphatase and elicits the release of LH from the pituitary. Following binding of Gonadotropin releasing hormone (GNRH), GNRH Receptor associates with G-proteins that activate a phosphatidylinositol (PtdIns)-calcium second messenger system. Activation of GNRHR ultimately causes the release of follicle stimulating hormone (FSH) and luteinizing hormone (LH).