RT Journal Article SR Electronic T1 Key amino acid residues responsible for the differences in substrate specificity of human UDP-glucuronosyltransferase (UGT) 1A9 and UGT1A8 JF Drug Metabolism and Disposition JO Drug Metab Dispos FD American Society for Pharmacology and Experimental Therapeutics DO 10.1124/dmd.108.022913 A1 Ryoichi Fujiwara A1 Miki Nakajima A1 Hiroyuki Yamanaka A1 Tsuyoshi Yokoi YR 2008 UL http://dmd.aspetjournals.org/content/early/2008/10/02/dmd.108.022913.abstract AB