label: L-lysyl-[collagen] + L-methionyl-[collagen] + H2O2 => [collagen]-L-lysyl-N-S-L-methionyl-[collagen] + 2 H2O + H(+)
label_lc: l-lysyl-[collagen] + l-methionyl-[collagen] + h2o2 => [collagen]-l-lysyl-n-s-l-methionyl-[collagen] + 2 h2o + h(+)