preferred_name: precorrin-3B + S-adenosyl-L-methionine = precorrin-4 + S-adenosyl-L-homocysteine + 3 H(+)
preferred_name_lc: precorrin-3b + s-adenosyl-l-methionine = precorrin-4 + s-adenosyl-l-homocysteine + 3 h(+)
label: "precorrin-3B C17-methyltransferase"
label_lc: "precorrin-3b c17-methyltransferase"