4.1.1.35 additional information synthesis of UDPxylose is controlled both by substrate activation and product inhibition of UDPglucuronate carboxy-lyase 4.1.1.35 additional information the enzyme is directly involved in the production of some of the precursors of hemicellulose and pectin. Close correlation between UDP-D-glucuronate decarboxylase activity and secondary wall formation 4.1.1.35 additional information the enzyme is required for the nucleoside diphosphate sugar interconversion 4.1.1.35 additional information increase in activity at the final stage of differentation of cambium to xylem 4.1.1.35 additional information key enzyme in proteoglycan synthesis 4.1.1.35 UDP-D-glucuronate - 4.1.1.35 UDP-D-glucuronate biosynthesis of cell wall polysaccharides and glycosylation of proteins