3,3'-di-O-methyl-4alpha-mannobiose + S-adenosyl-L-methionine = 1,3,3'-tri-O-methyl-4alpha-mannobiose + S-adenosyl-L-homocysteine + H(+)
3,3'-di-o-methyl-4alpha-mannobiose + s-adenosyl-l-methionine = 1,3,3'-tri-o-methyl-4alpha-mannobiose + s-adenosyl-l-homocysteine + h(+)
"3-O-methylmannose polysaccharide 1-O-methyltransferase"
"3-o-methylmannose polysaccharide 1-o-methyltransferase"