S-nitroso-L-cysteinyl-[SCAN] + L-cysteinyl-[protein] <=> L-cysteinyl-[SCAN] + S-nitroso-L-cysteinyl-[protein]
s-nitroso-l-cysteinyl-[scan] + l-cysteinyl-[protein] <=> l-cysteinyl-[scan] + s-nitroso-l-cysteinyl-[protein]
S-nitroso-L-cysteinyl-[SCAN] + L-cysteinyl-[protein] <=> L-cysteinyl-[SCAN] + S-nitroso-L-cysteinyl-[protein]
s-nitroso-l-cysteinyl-[scan] + l-cysteinyl-[protein] <=> l-cysteinyl-[scan] + s-nitroso-l-cysteinyl-[protein]