title: S beta-(bilin)cysteine derivatives: structures, spectroscopic properties, and quantitation.
mesh_terms: D000818:Animals; D001654:Bile Pigments; D055598:Chemical Phenomena; D002621:Chemistry; D003545:Cysteine / Q000031:analogs & derivatives*; D006868:Hydrolysis; D011506:Proteins; D013053:Spectrophotometry / Q000379:methods; D013329:Structure-Activity Relationship
chemical_list: D001654:Bile Pigments; D011506:Proteins; D003545:Cysteine