Tags: Enzyme.
In enzymology a galactosylgalactosylxylosylprotein 3-beta-glucuronosyltransferase (EC 2.4.1.135) is an enzyme that catalyzes the chemical reactionUDP-glucuronate + 3-beta-D-galactosyl-4-beta-D-galactosyl-O-beta-D-xylosylprotein UDP + 3-beta-D-glucuronosyl-3-beta-D-galactosyl-4-beta-D-galactosyl-O- beta-D-xylosylproteinThus the two substrates of this enzyme are UDP-glucuronate and 3-beta-D-galactosyl-4-beta-D-galactosyl-O-beta-D-xylosylprotein whereas its 3 products are UDP 3-beta-D-glucuronosyl-3-beta-D-galactosyl-4-beta-D-galactosyl-O- and beta-D-xylosylprotein.This enzyme belongs to the family of glycosyltransferases specifically the hexosyltransferases.