label: N(omega)-methyl-L-arginine + S-adenosyl-L-homocysteine + H(+) => L-arginine + S-adenosyl-L-methionine
label_lc: n(omega)-methyl-l-arginine + s-adenosyl-l-homocysteine + h(+) => l-arginine + s-adenosyl-l-methionine