A method of determining RNA conformational ensembles using structure-based calculations of residual dipolar couplings

Borkar, Aditi N.; De Simone, Alfonso; Montalvao, Rinaldo W.; Vendruscolo, Michele

Abstract

We describe a method of determining the conformational fluctuations of RNA based on the incorporation of nuclear magnetic resonance (NMR) residual dipolar couplings (RDCs) as replica-averaged structural restraints in molecular dynamics simulations. In this approach, the alignment tensor required to calculate the RDCs corresponding to a given conformation is estimated from its shape, and multiple replicas of the RNA molecule are simulated simultaneously to reproduce in silico the ensemble-averaging procedure performed in the NMR measurements. We provide initial evidence that with this approach it is possible to determine accurately structural ensembles representing the conformational fluctuations of RNA by applying the reference ensemble test to the trans-activation response element of the human immunodeficiency virus type 1.

Citation

Borkar, A. N., De Simone, A., Montalvao, R. W., & Vendruscolo, M. (2013). A method of determining RNA conformational ensembles using structure-based calculations of residual dipolar couplings. Journal of Chemical Physics, 138(21), Article 215103. https://doi.org/10.1063/1.4804301

• Journal Article Type: Article
• Acceptance Date: Apr 24, 2013
• Online Publication Date: Jun 7, 2013
• Publication Date: Jun 7, 2013
• Deposit Date: Sep 8, 2022
• Journal: The Journal of Chemical Physics
• Print ISSN: 0021-9606
• Electronic ISSN: 1089-7690
• Publisher: American Institute of Physics
• Peer Reviewed: Peer Reviewed
• Volume: 138
• Issue: 21
• Article Number: 215103
• DOI: https://doi.org/10.1063/1.4804301
• Public URL: https://nottingham-repository.worktribe.com/output/3291388
• Publisher URL: https://aip.scitation.org/doi/full/10.1063/1.4804301