title: Are aromatic residues essential at the "active sites" of peptide hormones?
mesh_terms: D000595:Amino Acid Sequence; D001665:Binding Sites; D002116:Calcitonin; D003429:Cross Reactions; D005934:Glucagon; D006728:Hormones; D007328:Insulin; D009414:Nerve Growth Factors; D013329:Structure-Activity Relationship
chemical_list: D006728:Hormones; D007328:Insulin; D009414:Nerve Growth Factors; D002116:Calcitonin; D005934:Glucagon