Energies of Polypeptides: Theoretical Conformational Study of Polyglycine Using Quantum Mechanical Partitioning
Document Type
Article
Journal/Book Title
Proceedings of the National Academy of Sciences
Publication Date
5-1978
Publisher
National Academy of Sciences
Volume
75
Issue
5
First Page
2071
Last Page
2075
Abstract
A method is developed for evaluating the total energy of polypeptides based on a combination of quantum mechanical and empirical potentials. Adjacent and nonadjacent peptide units are allowed to interact through these respective means. Our hybrid procedure is applied to a study of polyglycine and compared to the results obtained by the method of Scheraga and coworkers. We find the alpha helical conformation of a single strand of polyglycine to be most stable in vacuo. Other less-stable configurations include the 310 helix, the 27 ribbon structure, and the fully extended conformation
Recommended Citation
Scheiner, Steve and Kern, C. W., "Energies of Polypeptides: Theoretical Conformational Study of Polyglycine Using Quantum Mechanical Partitioning" (1978). Chemistry and Biochemistry Faculty Publications. Paper 577.
https://digitalcommons.usu.edu/chem_facpub/577
