NCIt synonyms : G-Protein Coupled Receptor; G Protein-Complex Receptor; GPCR; G Protein-Complex Receptors; G Protein Coupled Receptor;
NCIt definition : Cell surface receptors that are coupled to G-proteins (GTP-binding protein). G-protein
coupled receptors are thought to have seven membrane spanning domains and have been
divided into 2 subclasses: those in which the binding site is in the extracellular
domain for example receptors for glycoprotein hormones, such as thyroid stimulating
hormone (TSH) and follicle-stimulating hormone (FSH) and those in which the ligand
binding site is likely to be in the plane of the 7 transmembrane domains for example
rhodopsin and receptors for small neurotransmitters and hormones for example muscarinic
acetylcholine receptor.;