title: Conformational constraints of amino acid side chains in alpha-helices.
authors: L
authors: L
authors: Piela
authors: G
authors: G
authors: Nemethy
authors: H A
authors: HA
authors: Scheraga
mesh_terms: D000596:Amino Acids; D011487:Protein Conformation; D011506:Proteins; D013329:Structure-Activity Relationship
chemical_list: D000596:Amino Acids; D011506:Proteins