rebaudioside D + UDP-alpha-D-glucose = rebaudioside M + UDP + H(+)
rebaudioside d + udp-alpha-d-glucose = rebaudioside m + udp + h(+)
rebaudioside D + UDP-alpha-D-glucose = rebaudioside M + UDP + H(+)
rebaudioside d + udp-alpha-d-glucose = rebaudioside m + udp + h(+)