title: Modification of polypeptide activity by cysteine analogs: structure-activity relationship.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology; D000588:Amines; D000596:Amino Acids; D000818:Animals; D001920:Bradykinin / Q000494:pharmacology; D002264:Carboxylic Acids; D055598:Chemical Phenomena; D002621:Chemistry; D003545:Cysteine / Q000494:pharmacology*; D004600:Eledoisin / Q000494:pharmacology; D006168:Guinea Pigs; D007082:Ileum / Q000187:drug effects; D009130:Muscle, Smooth / Q000187:drug effects; D010455:Peptides / Q000494:pharmacology*; D013329:Structure-Activity Relationship; D013438:Sulfhydryl Compounds
chemical_list: D000588:Amines; D000596:Amino Acids; D002264:Carboxylic Acids; D010455:Peptides; D013438:Sulfhydryl Compounds; D004600:Eledoisin; D003545:Cysteine; D000109:Acetylcholine; D001920:Bradykinin