UDPGT is of major importance in the conjugation and subsequent elimination of potentially toxic xenobiotics and endogenous compounds. 2B2 acts on various endogenous steroids, especially etiocholanolone and androsterone. glucuronate acceptor + UDP-alpha-D-glucuronate = acceptor beta-D-glucuronoside + H(+) + UDP Constitutively expressed. Autoacylation in vitro. Belongs to the UDP-glycosyltransferase family.