2.4.1.91 | UDP-glucose + a flavonol = UDP + a flavonol 3-O-beta-D-glucoside |
His22 acts as the catalytic base, and Asp121 is a key residue that may assist deprotonation of the acceptor by forming an electron transfer chain with the catalytic base, both residues, as well as Glu381, are essential in donor substrate binding and enzyme activity, acceptor substrate binding site structure |
676413 |