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RNase H1, the Gold Standard for R-Loop Detection

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Specialty Molecular Biology
Date 2022 Jun 15
PMID 35704187
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Abstract

RNase H1 has become an essential tool to uncover the physiological and pathological roles of R-loops, three-stranded structures consisting of and RNA-DNA hybrid opposite to a single DNA strand (ssDNA). RNase H1 degrades the RNA portion of the R-loops returning the two DNA strands to double-stranded form (dsDNA). Overexpression of RNase H1 in different systems has helped to address the questions of where R-loops are located, their abundance, and mechanisms of formation, stability, and degradation. In this chapter we review multiple studies that used RNase H1 as an instrument to investigate R-loops multiple functions and their relevance in health and diseases.

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References
1.
Itoh T, Tomizawa J . Formation of an RNA primer for initiation of replication of ColE1 DNA by ribonuclease H. Proc Natl Acad Sci U S A. 1980; 77(5):2450-4. PMC: 349417. DOI: 10.1073/pnas.77.5.2450. View

2.
Masukata H, Tomizawa J . A mechanism of formation of a persistent hybrid between elongating RNA and template DNA. Cell. 1990; 62(2):331-8. DOI: 10.1016/0092-8674(90)90370-t. View

3.
Yu K, Chedin F, Hsieh C, Wilson T, Lieber M . R-loops at immunoglobulin class switch regions in the chromosomes of stimulated B cells. Nat Immunol. 2003; 4(5):442-51. DOI: 10.1038/ni919. View

4.
Holmes J, Akman G, Wood S, Sakhuja K, Cerritelli S, Moss C . Primer retention owing to the absence of RNase H1 is catastrophic for mitochondrial DNA replication. Proc Natl Acad Sci U S A. 2015; 112(30):9334-9. PMC: 4522766. DOI: 10.1073/pnas.1503653112. View

5.
Skourti-Stathaki K, Proudfoot N, Gromak N . Human senataxin resolves RNA/DNA hybrids formed at transcriptional pause sites to promote Xrn2-dependent termination. Mol Cell. 2011; 42(6):794-805. PMC: 3145960. DOI: 10.1016/j.molcel.2011.04.026. View