Source:http://linkedlifedata.com/resource/umls/id/C1166730
GO: A heterotetrameric AP-type membrane coat adaptor complex that consists of alpha, beta2, mu2 and sigma2 subunits, and links clathrin to the membrane surface of a vesicle; vesicles with AP-2-containing coats are normally found primarily near the plasma membrane, on endocytic vesicles. In at least humans, the AP-2 complex can be heterogeneric due to the existence of multiple subunit isoforms encoded by different alpha genes (alphaA and alphaC). [GOC:mah, PMID:10611976, PMID:21097499],GO: OBSOLETE (was not defined before being made obsolete). [GOC:go_curators]