title: Extended Hückel calculations on polypeptide chains. IV. The phy-psi energy surface for a tetrapeptide of poly-L-alanine.
mesh_terms: D000409:Alanine; D004735:Energy Transfer; D008433:Mathematics; D010455:Peptides; D011487:Protein Conformation; D013499:Surface Properties
chemical_list: D010455:Peptides; D000409:Alanine