6-demethylmitomycin B + S-adenosyl-L-methionine = mitomycin B + S-adenosyl-L-homocysteine
6-demethylmitomycin b + s-adenosyl-l-methionine = mitomycin b + s-adenosyl-l-homocysteine
6-demethylmitomycin B + S-adenosyl-L-methionine = mitomycin B + S-adenosyl-L-homocysteine
6-demethylmitomycin b + s-adenosyl-l-methionine = mitomycin b + s-adenosyl-l-homocysteine