Free‐Energy Landscapes of Ion Movement through a G‐Quadruplex DNA Channel
Identifieur interne : 000806 ( Istex/Curation ); précédent : 000805; suivant : 000807Free‐Energy Landscapes of Ion Movement through a G‐Quadruplex DNA Channel
Auteurs : Parisa Akhshi [Canada] ; Parisa Mosey [Canada] ; Parisa Wu [Canada]Source :
- Angewandte Chemie International Edition [ 1433-7851 ] ; 2012-03-19.
English descriptors
Abstract
How easily can ions move in DNA channels? Three‐dimensional free‐energy landscapes for the movement of Na+, K+, and NH4+ ions through G‐quadruplex DNA channels have been obtained by molecular dynamics simulations. The computed results are in qualitative agreement with the limited experimental data: large K+ and NH4+ ions squeeze through the G‐quartets with some difficulty, while Na+ ions pass through with less impedance.
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DOI: 10.1002/anie.201107700
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<front><div type="abstract">How easily can ions move in DNA channels? Three‐dimensional free‐energy landscapes for the movement of Na+, K+, and NH4+ ions through G‐quadruplex DNA channels have been obtained by molecular dynamics simulations. The computed results are in qualitative agreement with the limited experimental data: large K+ and NH4+ ions squeeze through the G‐quartets with some difficulty, while Na+ ions pass through with less impedance.</div>
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