dopamine + S-adenosyl-L-methionine = N-methyl-dopamine + S-adenosyl-L-homocysteine + H(+)
dopamine + s-adenosyl-l-methionine = n-methyl-dopamine + s-adenosyl-l-homocysteine + h(+)
dopamine + S-adenosyl-L-methionine = N-methyl-dopamine + S-adenosyl-L-homocysteine + H(+)
dopamine + s-adenosyl-l-methionine = n-methyl-dopamine + s-adenosyl-l-homocysteine + h(+)