The progestin and adipoQ receptor (PAQR) family is a group of receptors related to but distinct from the G protein-coupled receptor family, which have the similar seven transmembrane structure, but the N-terminal is located on the inner side of the cell.[1] It includes at least 11 receptors (PAQR1–PAQR11), including the adiponectin (adipoQ) receptors (AdipoRs), the membrane progesterone receptors (mPRs), and others.[1]
^ abTang, Y. Tom; Hu, Tianhua; Arterburn, Matthew; Boyle, Bryan; Bright, Jessica M.; Emtage, Peter C.; Funk, Walter D. (2005). "PAQR Proteins: A Novel Membrane Receptor Family Defined by an Ancient7-Transmembrane Pass Motif". Journal of Molecular Evolution. 61 (3): 372–380. doi:10.1007/s00239-004-0375-2. ISSN0022-2844. PMID16044242.