label: menaquinol-11 + S-adenosyl-L-homocysteine + H(+) => 2-demethylmenaquinol-11 + S-adenosyl-L-methionine
label_lc: menaquinol-11 + s-adenosyl-l-homocysteine + h(+) => 2-demethylmenaquinol-11 + s-adenosyl-l-methionine