steviolmonoside + UDP-alpha-D-glucose = steviolbioside + UDP + H(+)
steviolmonoside + udp-alpha-d-glucose = steviolbioside + udp + h(+)
steviolmonoside + UDP-alpha-D-glucose = steviolbioside + UDP + H(+)
steviolmonoside + udp-alpha-d-glucose = steviolbioside + udp + h(+)