Peptide homologs, isosteres, and isomers: a general approach to structure-activity relationships.
D004745:Enkephalins / Q000494:pharmacology; D007536:Isomerism; D010455:Peptides / Q000494:pharmacology*; D011487:Protein Conformation; D013329:Structure-Activity Relationship; D013649:Taste / Q000187:drug effects
D004745:Enkephalins; D010455:Peptides