Comparison of the sulfur-oxygenation of cysteine and S-carboxymethyl-l-cysteine in human hepatic cytosol and the rôle of cysteine dioxygenase.

Human hepatic cytosolic fraction cysteine dioxygenase activity is not responsible for the S-oxidation of the substituted cysteine, S-carboxymethyl-l-cysteine.