3.2.1.197 | in complex with mannose bound in the -1 and +1 subsites. A pair of glutamate residues, Glu227 and Glu268, hydrogen bond to O1 of alpha-mannose, and either of these residues may function as the catalytic base. Conserved lysine residue, Lys199 is a key specificity determinant for beta-1,2-mannosidic linkages |
738663 |