Abstract
R-loops are nucleic acid structures containing a DNA-RNA hybrid and the associated non-template single-stranded DNA. R-loops are not only involved in many biological processes but also cause genomic instability when they are abnormally regulated. The R-loop regulation pathway consists of multiple steps associated with diverse proteins. The initial and essential step of the pathway is to recognize R-loops in long DNA of human genome. To elucidate the molecular mechanism underlying R-loop recognition by proteins, we utilize a novel high-throughput single-molecule approach called "DNA curtain" as well as electrophoretic mobility shift assays. Here, we describe the detailed protocols for these techniques that both can be used for studying the R-loop recognition mechanisms.
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