title: beta-Endorphin: deletion of a single amino acid residue abolishes immunoreactivity but retains opiate potency.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001216:Asparagine; D001681:Biological Assay; D002162:Camelus; D004723:Endorphins / Q000276:immunology / Q000494:pharmacology; D007700:Kinetics; D007930:Leucine; D051379:Mice; D011863:Radioimmunoassay; D013329:Structure-Activity Relationship
chemical_list: D004723:Endorphins; D001216:Asparagine; D007930:Leucine