Abstract
DNA single-strand breaks (SSBs) are the most common type of DNA lesions as they are generated approximately 10,000 times per mammalian cell each day. Unrepaired SSBs compromise DNA replication and transcription programs, leading to genome instability, and have been implicated in many diseases including cancer. In this chapter, we introduce methods to study the ATR-Chk1 DNA damage response (DDR) pathway and DNA repair pathway in response to a site-specific, defined SSB plasmid in Xenopus laevis egg extracts. This experimental system can be applied in future studies to reveal many aspects of the molecular mechanisms of SSB repair and signaling in eukaryotes.
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Acknowledgments
The Yan lab was supported, in part, by funds from University of North Carolina at Charlotte (Duke Energy Endowment Special Initiatives Fund and Faculty Research Grants) and grants from the National Institute of General Medical Sciences (R15GM101571 and R15GM114713) and the National Cancer Institute (R01CA225637) in the National Institutes of Health.
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Lin, Y., Ha, A., Yan, S. (2019). Methods for Studying DNA Single-Strand Break Repair and Signaling in Xenopus laevis Egg Extracts. In: Balakrishnan, L., Stewart, J. (eds) DNA Repair. Methods in Molecular Biology, vol 1999. Humana, New York, NY. https://doi.org/10.1007/978-1-4939-9500-4_9
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DOI: https://doi.org/10.1007/978-1-4939-9500-4_9
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