kaempferol + UDP-alpha-D-xylose = kaempferol 3-O-beta-D-xyloside + UDP + H(+)
kaempferol + udp-alpha-d-xylose = kaempferol 3-o-beta-d-xyloside + udp + h(+)
"flavonol 3-O-xylosyltransferase"
"flavonol 3-o-xylosyltransferase"