title: Studies on the active site of papain. VII. Photooxidation of tryptophan residues.
mesh_terms: D001665:Binding Sites; D010084:Oxidation-Reduction; D010206:Papain / Q000378:metabolism*; D010777:Photochemistry; D014364:Tryptophan
chemical_list: D014364:Tryptophan; D010206:Papain