preferred_name: putrescine + S-adenosyl-L-methionine = N-methylputrescine + S-adenosyl-L-homocysteine + H(+)
preferred_name_lc: putrescine + s-adenosyl-l-methionine = n-methylputrescine + s-adenosyl-l-homocysteine + h(+)
label: "putrescine N-methyltransferase"
label_lc: "putrescine n-methyltransferase"