title: Replacement of phenylalanine in gramicidin S by other amino acids.
mesh_terms: D000596:Amino Acids; D055598:Chemical Phenomena; D002621:Chemistry; D006096:Gramicidin / Q000138:chemical synthesis*; D010649:Phenylalanine; D014443:Tyrosine
chemical_list: D000596:Amino Acids; D006096:Gramicidin; D014443:Tyrosine; D010649:Phenylalanine