2.7.8.31	UDP-glucose + ditrans,octacis-undecaprenyl phosphate	GumD is involved in biosynthesis of the pentasaccharide repeating unit of xanthan. It is suggested that the wild-type Xanthomonas oryzae-produced xanthan is assembled by the sequential addition of UDP-glucose, UDP-glucose, GDP-mannose, UDPglucuronic acid, and GDP-mannose onto a polyprenol phosphate carrier, by the glycosyltransferase homologues encoded by the gumD, gumM, gumH, gumK, and gumI genes, respectively	
2.7.8.31	UDP-glucose + ditrans,octacis-undecaprenyl phosphate	the enzyme is involved in biosynthesis of xanthan