label: S-nitroso-L-cysteinyl-[GAPDH] + L-cysteinyl-[protein] = L-cysteinyl-[GAPDH] + S-nitroso-L-cysteinyl-[protein]
label_lc: s-nitroso-l-cysteinyl-[gapdh] + l-cysteinyl-[protein] = l-cysteinyl-[gapdh] + s-nitroso-l-cysteinyl-[protein]