. "Reviewed: D'Eustachio, P, 2010-05-08"^^ . "Authored: Jassal, B, 2005-02-23 15:02:50"^^ . "Edited: Jassal, B, 2010-05-27"^^ . "The principal conjugate of bilirubin in bile is bilirubin diglucuronide. The monmeric form of UGT1A1 (Bilirubin UDP-glucuronyltransferase) only conjugates the first step of bilirubin conjugation to form the monoglucuronide. A tetrameric form of UGT1A1 can convert bilirubin to both the monoglucuronide and the diglucuronide."^^ . . . . . . . . . "Bilirubin monoglucuronide is conjugated to bilirubin diglucuronide"^^ . "bilirubin monoglucuronide + UDP-glucuronic acid => bilirubin diglucuronide + UDP"^^ . "2.4.1.17"^^ . . . . .