Download MendeleyReinforced Hna Backbone Hydration in the Crystal Structure of a Decameric Hna/RNA Hybrid
Maier, T., Przylas, I., Strater, N., Herdewijn, P., Saenger, W.(2005) J Am Chem Soc 127: 2937
- PubMed: 15740130
- DOI: https://doi.org/10.1021/ja045843v
- Primary Citation of Related Structures:
2BJ6 - PubMed Abstract:
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.
Organizational Affiliation:
Institut für Chemie der Freien Universität Berlin, Takustrasse 6, 14195 Berlin, Germany.
