Structure of L-Arginyl-L-aspartie Acid Dihydrate

Ramakrishnan, B and Viswamitra, MA (1988) Structure of L-Arginyl-L-aspartie Acid Dihydrate. In: Acta Crystallographica Section C, 44 . pp. 1959-1961.

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Abstract

C~0H~gN5Os.2H20, Mr=325.32, monoclinic,P2~, a = 12.029 (2), b=4.904 (2), c=13.215 (2) A, fl= 107.68 (2) ° , F= 743 (1) A 3, Z= 2,D m = 1-45, D x = 1.45 Mg m -3, Cu Ka, 2 = 1.54184 A,fl= 1.01mm -1, F(000)=348, T=293K. The final R value for 1277 observed reflections 110 >_ 3tr(Io)l is 0.031. The dipeptide exists as a zwitterion. The arginyl side-chain conformation is similar to that found in arginyl-glutamic acid [Pandit, Seshadri & Viswamitra (1983). Acta Cryst. C39, 1669-16721. The guanidyl group forms a pair of hydrogen bonds with oxygen atoms of the backbone carboxyl group. The crystal structure is also stabilized by -bonding interactions involving both water molecules.

Item Type:	Journal Article
Publication:	Acta Crystallographica Section C
Publisher:	International Union of Crystallography
Additional Information:	Copyright of this article belongs to International Union of Crystallography.
Department/Centre:	Division of Biological Sciences > Microbiology & Cell Biology Division of Biological Sciences > Molecular Reproduction, Development & Genetics Division of Physical & Mathematical Sciences > Physics
Date Deposited:	11 Oct 2010 08:36
Last Modified:	11 Oct 2010 08:40
URI:	http://eprints.iisc.ac.in/id/eprint/32964

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