Seyedeh Hoda Fatemi
Abhari*, and , Rosa Di Felice*,
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Probing Electrostatic Interactions in DNA-Bound CRISPR/Cas9 Complexes by Molecular Dynamics Simulations
Engineered protein mutations may be exploited to tune molecular interactions in the cellular environment. Here, we have explored the structural consequences of different Cas9 mutations in genome-editing CRISPR/Cas9 systems by means of Molecular Dynamics simulations. We have characterized mutation-induced structural changes and their implications for changes in protein–DNA, DNA–RNA, and DNA–DNA interactions. We present the analysis of multiple trajectories over the cumulative time scale of 7.7 μs, focusing on triple mutations that have been associated with enhancement of genome editing specificity, as well as control mutations. We find that the structural changes induced by the protein mutations are consistent with decreasing the strength of the interaction between Cas9 and the nontarget DNA strand. We discuss the implications of this finding for genome editing specificity.
ACS OmegaChemical Engineering-General Chemical Engineering
CiteScore
6.60
自引率
4.90%
发文量
3945
审稿时长
2.4 months
期刊介绍:
ACS Omega is an open-access global publication for scientific articles that describe new findings in chemistry and interfacing areas of science, without any perceived evaluation of immediate impact.