RNase H1, the Gold Standard for R-Loop Detection
Overview
Affiliations
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.
The human HELQ helicase and XRN2 exoribonuclease cooperate in R-loop resolution.
Pan J, Betts H, Cubbon A, He L, Bolt E, Soultanas P Open Biol. 2025; 15(2):240112.
PMID: 39965657 PMC: 11835494. DOI: 10.1098/rsob.240112.
Kinetic Features of Degradation of R-Loops by RNase H1 from .
Kuznetsova A, Kosarev I, Timofeyeva N, Novopashina D, Kuznetsov N Int J Mol Sci. 2024; 25(22).
PMID: 39596330 PMC: 11594918. DOI: 10.3390/ijms252212263.
Zhang X, Liang S, Yi Z, Qiao Z, Xu B, Geng H Nucleic Acids Res. 2024; 52(21):13110-13127.
PMID: 39470713 PMC: 11602159. DOI: 10.1093/nar/gkae933.
Regulation of R-Loops in DNA Tumor Viruses.
Crowner A, Smith K, DeSmet M Pathogens. 2024; 13(10).
PMID: 39452734 PMC: 11510693. DOI: 10.3390/pathogens13100863.
NAT10 resolves harmful nucleolar R-loops depending on its helicase domain and acetylation of DDX21.
Su K, Zhao Z, Wang Y, Sun S, Liu X, Zhang C Cell Commun Signal. 2024; 22(1):490.
PMID: 39394182 PMC: 11468200. DOI: 10.1186/s12964-024-01869-3.