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Study on \beta-sheet packing, stabilized by aromatic interactions in a tri-peptide crystal

Rathore, Ravindranath S (2004) Study on \beta-sheet packing, stabilized by aromatic interactions in a tri-peptide crystal. In: Zeitschrift fuer Kristallographie, 219 (9). pp. 567-572.

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Official URL: http://www.oldenbourg-link.com/doi/abs/10.1524/zkr...


The role of unconventional arom. interactions in the \beta -sheet packing, inside the crystal, was highlighted. Crystal structure of terminally blocked tri-peptide, Z-L-Ala-L-Ala-L-Leu-pNA was detd. There are four different conformers of tri-peptide inside the unit-cell, in space group P1. All the four independent mols. are described by semi-extended backbone conformations which form an anti-parallel \beta-sheet. The inter \beta-sheet packing is predominantly stabilized by C-H...\pi and \pi...\pi interactions. In \pi...\pi interactions, the center-to-center distance between arom. rings varies from 3.8 \AA to 4.6 \AA. while the closest distance of approach ranges from 3.4 \AA to 3.8 \AA. The assocns. of arom.-arom. rings are described by either face-to-face or inclined arrangements

Item Type: Journal Article
Publication: Zeitschrift fuer Kristallographie
Publisher: Oldenbourg Wissenschaftsverlag
Additional Information: Copyright of this article belongs to Oldenbourg Wissenschaftsverlag.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 24 Oct 2007
Last Modified: 07 Feb 2012 08:58
URI: http://eprints.iisc.ac.in/id/eprint/12345

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