title: Using C' deviation to study structures of central amino acids in peptide fragments.
abstract: In this investigation, we attempted to study the backbone geometry of amino acids in peptides using C' deviation. Diameters of distribution were used to describe the various atomic structures, and scatter graphs provided visual evaluation. The length of peptide fragments and the secondary structure of amino acids in the central position of the peptide fragments were also analyzed. The results showed that the atomic distribution of the central amino acids of five-residue peptide fragments was much more restricted than that of their corresponding three-residue peptide fragments. In identical three-residue fragments, atoms of central amino acids with different secondary structures, were distributed in distinct areas.
authors.affiliation: School of Basic Medicine, Peking Union Medical College, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Beijing, China.
authors.forename: H-Y
authors.initials: HY
authors.lastname: Tang
authors.forename: Z-G
authors.initials: ZG
authors.lastname: Zhang
mesh_terms: D000596:Amino Acids / Q000737:chemistry*; D008958:Models, Molecular; D010446:Peptide Fragments / Q000737:chemistry*; D011487:Protein Conformation; D017510:Protein Folding; D017433:Protein Structure, Secondary
chemical_list: D000596:Amino Acids; D010446:Peptide Fragments