Gonadotropin Releasing Hormone Receptor (GnRHR)

The gonadotropin-releasing hormone receptor (GNRHR), 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. This 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, the LHRHr stimulates tyrosine phosphatase and elicits the release of LH from the pituitary. Evidence exists showing the presence of LHRH and its receptor in extrapituitary tissues as well as a role in progression of some cancers.