27-O-demethylrifamycin SV + S-adenosyl-L-methionine = rifamycin SV + S-adenosyl-L-homocysteine + H(+)
27-o-demethylrifamycin sv + s-adenosyl-l-methionine = rifamycin sv + s-adenosyl-l-homocysteine + h(+)
"27-O-demethylrifamycin SV methyltransferase"
"27-o-demethylrifamycin sv methyltransferase"