stevioside + UDP-alpha-D-glucose <=> rebaudioside A + UDP + H(+)
stevioside + udp-alpha-d-glucose <=> rebaudioside a + udp + h(+)
stevioside + UDP-alpha-D-glucose <=> rebaudioside A + UDP + H(+)
stevioside + udp-alpha-d-glucose <=> rebaudioside a + udp + h(+)