Abstract
Nowadays, the structural dynamics of DNA and RNA is accessible on an atomistic level on a micro- to millisecond time scale via molecular dynamics simulations. However, as DNA or RNA are highly charged molecules, performing such simulations is challenging as to the representation of intramolecular electrostatic interactions and those to solvent molecules and ions. This is particularly true for DNAzymes, where DNA and RNA backbones can come as close as 2.4 Å with their charged phosphate groups during the catalytic cycle. Here, we present tools to simulate the structural dynamics of a DNAzyme, with a focus on detailed instructions for the Amber suite of programs. Furthermore, we will show how to analyze metal ion binding within the DNAzyme.
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Notes
- 1.
During typesetting of this article, an NMR structure of a 10-23 DNAzyme in complex with RNA has been solved: PDB ID 7PDU; [23].
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Acknowledgments
H.G. is grateful for computational support and infrastructure provided by the “Zentrum für Informations- und Medientechnologie” (ZIM) at the Heinrich Heine University Düsseldorf and the John von Neumann Institute for Computing (NIC) (user ID: HKF7), VSK33. The Center for Structural Studies is funded by the DFG (Grant number 417919780).
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Gertzen, C.G.W., Gohlke, H. (2022). Molecular Modeling and Simulations of DNA and RNA: DNAzyme as a Model System. In: Steger, G., Rosenbach, H., Span, I. (eds) DNAzymes. Methods in Molecular Biology, vol 2439. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-2047-2_11
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DOI: https://doi.org/10.1007/978-1-0716-2047-2_11
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