label: reduced [flavodoxin] + a menaquinone + 2 S-adenosyl-L-methionine <=> an 8-methylmenaquinone + oxidized [flavodoxin] + 5'-deoxyadenosine + L-methionine + S-adenosyl-L-homocysteine + 3 H(+)
label_lc: reduced [flavodoxin] + a menaquinone + 2 s-adenosyl-l-methionine <=> an 8-methylmenaquinone + oxidized [flavodoxin] + 5'-deoxyadenosine + l-methionine + s-adenosyl-l-homocysteine + 3 h(+)