Tags: Enzyme.
In enzymology a luteolin-7-O-diglucuronide 4′-O-glucuronosyltransferase (EC 2.4.1.191) is an enzyme that catalyzes the chemical reactionUDP-glucuronate + luteolin 7-O-beta-D-diglucuronide UDP + luteolin 7-O-[beta-D-glucuronosyl-(1->2)-beta-D-glucuronide]-4′-O-beta-D- glucuronideThus the two substrates of this enzyme are UDP-glucuronate and luteolin 7-O-beta-D-diglucuronide whereas its 4 products are UDP luteolin [[7-O-[beta-D-glucuronosyl-(1->2)-beta-D-glucuronide]-4′-O-beta-D-]] and glucuronide.This enzyme belongs to the family of glycosyltransferases specifically the hexosyltransferases.