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