Padiyar, GS and Seshadri, TP (1996) Trifurcated (four-center) hydrogen bond in solid state crystal structure of 5'-amino-5'-deoxyadenosine p-toluenesulfonate. In: Nucleosides & Nucleotides, 15 (4). 857 -865.
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The crystal structure of 5'-amino-5'-deoxyadenosine (5'-Am.dA) p-toluenesulfonate has been determined by X-ray crystallographic methods. It belongs to the orthorhombic space group P2(1)2(1)2(1) with a = 7.754(3)Angstrom, b = 8.065(1)Angstrom and c = 32.481(2)Angstrom. This nucleoside side shows a syn conformation about the glycosyl bond and C2'-endo-C3'-exo puckering for the ribose sugar. The orientation of N5' atom is gauche-trans about the exocyclic C4'-C5' bond. The amino nitrogen N5' forms a trifurcated hydrogen bond with N3, O9T and O4' atoms. Adenine bases form A.A.A triplets through hydrogen bonding between N6, N7 and N1 atoms of symmetry related nucleoside molecules.
| Item Type: | Journal Article |
|---|---|
| Publication: | Nucleosides & Nucleotides |
| Publisher: | Marcel Dekker Inc |
| Additional Information: | copyright of this article belongs to Marcel Dekker Inc. |
| Keywords: | stereochemistry;nucleosides;nucleotides. |
| Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
| Date Deposited: | 18 Jan 2010 10:22 |
| Last Modified: | 18 Jan 2010 10:22 |
| URI: | http://eprints.iisc.ac.in/id/eprint/25078 |
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