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Motifs and conformational analysis of amino acid residues adjoining beta-turns in proteins

Ramakrishnan, C and Srinivasan, N and Nataraj, DV (1996) Motifs and conformational analysis of amino acid residues adjoining beta-turns in proteins. In: International Journal of Peptide And Protein Research, 48 (05). pp. 420-428.

Full text not available from this repository.
Official URL: http://www.ncbi.nlm.nih.gov/pubmed/8956075

Abstract

Using a data set of 250 non-homologous high-resolution globular proteins, a systematic analysis of the conformations that precede and succeed (positions i and i+3) the various classical beta-turn types has been carried out. The collective conformation of a specific beta-turn type, including the flanking positions, termed motif, has been studied. In all the four turn types, the majority of examples are preceded and succeeded by extended conformation. Some of the other observations are: (1) In a type I beta-turn, Gly at position i+3 has a higher favorability to occur with positive phi and does not prefer the major motif beta-alpha(R)-alpha(R)-beta. (2) The left-handed alpha-helical conformation (alpha(L)) is not preferred at both the flanking positions for type I' and II' beta-turns. (3) The beta--beta motif is favourable for all the turn types and the motif beta--alpha(L) very highly favourable for type I.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Munksgaard.
Department/Centre: Division of Biological Sciences > Molecular Biophysics Unit
Date Deposited: 08 Jan 2010 11:24
Last Modified: 08 Jan 2010 11:24
URI: http://eprints.iisc.ernet.in/id/eprint/18982

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