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DNA Bending Force Facilitates Z-DNA Formation under Physiological Salt Conditions
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yi, Jaehun | - |
dc.contributor.author | Yeou, Sanghun | - |
dc.contributor.author | Lee, Nam Ki | - |
dc.date.accessioned | 2022-10-12T00:33:42Z | - |
dc.date.available | 2022-10-12T00:33:42Z | - |
dc.date.created | 2022-09-13 | - |
dc.date.issued | 2022-07 | - |
dc.identifier.citation | Journal of the American Chemical Society, Vol.144 No.29, pp.13137-13145 | - |
dc.identifier.issn | 0002-7863 | - |
dc.identifier.uri | https://hdl.handle.net/10371/185840 | - |
dc.description.abstract | © 2022 American Chemical Society.Z-DNA, a noncanonical helical structure of double-stranded DNA (dsDNA), plays pivotal roles in various biological processes, including transcription regulation. Mechanical stresses on dsDNA, such as twisting and stretching, help to form Z-DNA. However, the effect of DNA bending, one of the most common dsDNA deformations, on Z-DNA formation is utterly unknown. Here, we show that DNA bending induces the formation of Z-DNA, that is, more Z-DNA is formed as the bending force becomes stronger. We regulated the bending force on dsDNA by using D-shaped DNA nanostructures. The B-Z transition was observed by single-molecule fluorescence resonance energy transfer. We found that as the bending force became stronger, Z-DNA was formed at lower Mg2+ concentrations. When dsDNA contained cytosine methylations, the B-Z transition occurred at 78 mM Mg2+ (midpoint) in the absence of the bending force. However, the B-Z transition occurred at a 28-fold lower Mg2+ concentration (2.8 mM) in the presence of the bending force. Monte Carlo simulation suggested that the B-Z transition stabilizes the bent form via the formation of the B-Z junction with base extrusion, which effectively releases the bending stress on DNA. Our results clearly show that the bending force facilitates the B-Z transition under physiological salt conditions. | - |
dc.language | 영어 | - |
dc.publisher | American Chemical Society | - |
dc.title | DNA Bending Force Facilitates Z-DNA Formation under Physiological Salt Conditions | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/jacs.2c02466 | - |
dc.citation.journaltitle | Journal of the American Chemical Society | - |
dc.identifier.wosid | 000830414800001 | - |
dc.identifier.scopusid | 2-s2.0-85135381587 | - |
dc.citation.endpage | 13145 | - |
dc.citation.number | 29 | - |
dc.citation.startpage | 13137 | - |
dc.citation.volume | 144 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Lee, Nam Ki | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
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