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The Linear Tripeptide L-Alanylglyeyl-L- alanine

Padiyar, GS and Seshadri, Parthasarathy T (1996) The Linear Tripeptide L-Alanylglyeyl-L- alanine. In: Acta Crystallographica Section C-Crystal Structure Communications, 52 (47). pp. 1693-1695.

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L-Alanylglycyl-L-alanine, C8H15N3O4, exists as zwitter-ion in the crystal with the N terminus protonated and the C terminus in an ionized form, Both the peptide units are in trans configurations and deviate significantly from planarity. Backbone torsion angles are psi(1)=172.7(2), omega(1)=-178.2(2), phi(2)=91.7(2), phi(2)=-151.9(2), omega(2)=-176.9(2), phi(3)=-71.3(2), phi(31)=-7.0(3) and psi(32) 172.4(2)degrees. The protonated NH3+ group forms three hydrogen bonds with atoms of symmetry-related molecules.

Item Type: Journal Article
Publication: Acta Crystallographica Section C-Crystal Structure Communications
Publisher: International Union of Crystallography.
Additional Information: Copyright of this article belongs to International Union of Crystallography.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 04 Sep 2009 03:23
Last Modified: 05 Apr 2011 10:50
URI: http://eprints.iisc.ac.in/id/eprint/19862

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