In enzymology, a lipopolysaccharide glucosyltransferase II (EC 2.4.1.73) is an enzyme that catalyzes the chemical reaction
UDP-glucose + lipopolysaccharide ⇌ {\displaystyle \rightleftharpoons } UDP + alpha-D-glucosyl-lipopolysaccharide Thus, the two substrates of this enzyme are UDP-glucose and lipopolysaccharide, whereas its two products are UDP and alpha-D-glucosyl-lipopolysaccharide. This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-glucose:galactosyl-lipopolysaccharide alpha-D-glucosyltransferase. Other names in common use include uridine diphosphoglucose-galactosylpolysaccharide, and glucosyltransferase.
References
Edstrom RD, Heath EC (1967). "The biosynthesis of cell wall lipopolysaccharide in Escherichia coli. VI. Enzymatic transfer of galactose, glucose, N-acetylglucosamine, and colitose into the polymer". J. Biol. Chem. 242 (16): 3581–8. doi:10.1016/S0021-9258(18)95847-3. PMID 5341482.
