ID 2.1.1.40 DE inositol 1-methyltransferase. AN inositol 3-O-methyltransferase. AN inositol D-1-methyltransferase. AN myo-inositol 3-O-methyltransferase. AN S-adenosyl-L-methionine:myo-inositol 3-O-methyltransferase. AN S-adenosylmethionine:myo-inositol 3-methyltransferase. CA myo-inositol + S-adenosyl-L-methionine = 1D-1-O-methyl-myo-inositol + CA H(+) + S-adenosyl-L-homocysteine. //