GPR56 is a a cell-surface G protein-coupled receptor (GPCR) which belongs to the adhesion G protein-coupled receptor (aGPCR) family, a large family of chimeric proteins that have both adhesion and signaling functions and play critical roles in diverse neurobiological processes including brain development, synaptogenesis, and myelination. This entry represents GPCR-Autoproteolysis-INducing (GAIN) subdomain A, including PLL-GAIN linker (F161-D175) region [1].

1: Structural Basis for Regulation of GPR56/ADGRG1 by Its Alternatively Spliced Extracellular Domains. Salzman GS, Ackerman SD, Ding C, Koide A, Leon K, Luo R, Stoveken HM, Fernandez CG, Tall GG, Piao X, Monk KR, Koide S, Arac D; Neuron. 2016;91:1292-1304. PMID:27657451