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Flexibility of short-strand RNA in aqueous solution as revealed by molecular dynamics simulation: Are A′-RNA and A-RNA distinct conformational structures?
Ouyang D.1; Zhang H.1; Herten D.-P.2; Parekh H.S.1; Smith S.C.1
2009-09-28
Source PublicationAustralian Journal of Chemistry
Volume62
Issue9
Pages1054-1061
AbstractWe use molecular dynamics simulations to compare the conformational structure and dynamics of a 21-base pair RNA sequence initially constructed according to the canonical A-RNA and A′-RNA forms in the presence of counterions and explicit water. Our study aims to add a dynamical perspective to the solid-state structural information that has been derived from X-ray data for these two characteristic forms of RNA. Analysis of the three main structural descriptors commonly used to differentiate between the two forms of RNA namely major groove width, inclination and the number of base pairs in a helical twist over a 30 ns simulation period reveals a flexible structure in aqueous solution with fluctuations in the values of these structural parameters encompassing the range between the two crystal forms and more. This provides evidence to suggest that the identification of distinct A-RNA and A′-RNA structures, while relevant in the crystalline form, may not be generally relevant in the context of RNA in the aqueous phase. The apparent structural flexibility observed in our simulations is likely to bear ramifications for the interactions of RNA with biological molecules (e.g. proteins) and non-biological molecules (e.g. non-viral gene delivery vectors). © CSIRO 2009.
DOI10.1071/CH09090
URLView the original
Language英語
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Cited Times [WOS]:5   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
CollectionInstitute of Chinese Medical Sciences
Affiliation1.University of Queensland
2.Universität Heidelberg
Recommended Citation
GB/T 7714
Ouyang D.,Zhang H.,Herten D.-P.,et al. Flexibility of short-strand RNA in aqueous solution as revealed by molecular dynamics simulation: Are A′-RNA and A-RNA distinct conformational structures?[C],2009:1054-1061.
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