title: Enkephalin analogs. Introduction of sterochemical constraints, metal binding sites and fluorescent groups.
mesh_terms: D000818:Animals; D001921:Brain / Q000187:drug effects / Q000502:physiology; D004723:Endorphins / Q000494:pharmacology; D004745:Enkephalins / Q000494:pharmacology; D009682:Magnetic Resonance Spectroscopy; D051379:Mice; D011487:Protein Conformation; D013329:Structure-Activity Relationship
chemical_list: D004723:Endorphins; D004745:Enkephalins