[(1->4)-beta-D-glucosyl](n) + UDP-alpha-D-glucose = [(1->4)-beta-D-glucosyl](n+1) + UDP + H(+)
[(1->4)-beta-d-glucosyl](n) + udp-alpha-d-glucose = [(1->4)-beta-d-glucosyl](n+1) + udp + h(+)
"UDP-glucose-cellulose glucosyltransferase"
"udp-glucose-cellulose glucosyltransferase"