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 + 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 + s-adenosyl-l-methionine