2bj6: Difference between revisions
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==Overview== | ==Overview== | ||
The crystal structure of a decameric HNA/RNA (HNA = | The crystal structure of a decameric HNA/RNA (HNA = 2',3'-dideoxy-1',5'-anhydro-d-arabinohexitol nucleic acid) hybrid with the RNA sequence 5'-GGCAUUACGG-3' is the first crystal structure of a hybrid duplex between a naturally occurring nucleic acid and a strand, which is fully modified to contain a six-membered ring instead of ribose. The presence of four duplex helices in the asymmetric unit allows for a detailed discussion of hydration, which revealed a tighter spinelike backbone hydration for the HNA- than for the RNA-strands. The reinforced backbone hydration is suggested to contribute significantly to the exceptional stability of HNA-containing duplexes and might be one of the causes for the evolutionary preference for ribose-derived nucleic acids. | ||
==About this Structure== | ==About this Structure== | ||
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[[Category: rna]] | [[Category: rna]] | ||
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Revision as of 14:38, 21 February 2008
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CRYSTAL STRUCTURE OF A DECAMERIC HNA-RNA HYBRID
Overview
The crystal structure of a decameric HNA/RNA (HNA = 2',3'-dideoxy-1',5'-anhydro-d-arabinohexitol nucleic acid) hybrid with the RNA sequence 5'-GGCAUUACGG-3' is the first crystal structure of a hybrid duplex between a naturally occurring nucleic acid and a strand, which is fully modified to contain a six-membered ring instead of ribose. The presence of four duplex helices in the asymmetric unit allows for a detailed discussion of hydration, which revealed a tighter spinelike backbone hydration for the HNA- than for the RNA-strands. The reinforced backbone hydration is suggested to contribute significantly to the exceptional stability of HNA-containing duplexes and might be one of the causes for the evolutionary preference for ribose-derived nucleic acids.
About this Structure
2BJ6 is a Single protein structure of sequence from [1] with SO4 as ligand. Known structural/functional Site: AC1. Full crystallographic information is available from OCA.
Reference
Reinforced HNA backbone hydration in the crystal structure of a decameric HNA/RNA hybrid., Maier T, Przylas I, Strater N, Herdewijn P, Saenger W, J Am Chem Soc. 2005 Mar 9;127(9):2937-43. PMID:15740130
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