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Depletion of RNase HI activity in Escherichia coli lacking DNA topoisomerase I leads to defects in DNA supercoiling and segregation
Gyrase-mediated hypernegative supercoiling is one manifestation of R-loop formation, a phenomenon that is normally suppressed by topoisomerase I (topA) in Escherichia coli. Overproduction of RNase HI (rnhA), an enzyme that removes the RNA moiety of R-loops, prevents hypernegative supercoiling and al...
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Main Authors: | , , , , , , , |
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Formato: | Artigo |
Idioma: | Inglês |
Publicado em: |
2008
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Assuntos: | |
Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC2875999/ https://ncbi.nlm.nih.gov/pubmed/18554330 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1111/j.1365-2958.2008.06334.x |
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