trans-aconitate + S-adenosyl-L-methionine = (E)-2-(methoxycarbonylmethyl)but-2-enedioate + S-adenosyl-L-homocysteine
trans-aconitate + s-adenosyl-l-methionine = (e)-2-(methoxycarbonylmethyl)but-2-enedioate + s-adenosyl-l-homocysteine
trans-aconitate + S-adenosyl-L-methionine = (E)-2-(methoxycarbonylmethyl)but-2-enedioate + S-adenosyl-L-homocysteine
trans-aconitate + s-adenosyl-l-methionine = (e)-2-(methoxycarbonylmethyl)but-2-enedioate + s-adenosyl-l-homocysteine