| Chapter title |
Analysis of ssDNA Gaps and DSBs in Genetically Unstable Yeast Cultures.
|
|---|---|
| Chapter number | 27 |
| Book title |
Cell Cycle Control
|
| Published in |
Methods in molecular biology, January 2014
|
| DOI | 10.1007/978-1-4939-0888-2_27 |
| Pubmed ID | |
| Book ISBNs |
978-1-4939-0887-5, 978-1-4939-0888-2
|
| Authors |
Jie Peng, M K Raghuraman, Wenyi Feng, M. K. Raghuraman, Peng, Jie, Raghuraman, M. K., Feng, Wenyi |
| Abstract |
DNA replication defects are an underlying cause of genome instability, which could stem from alterations in replication intermediates such as extensive single-stranded DNA (ssDNA). Under replication stress, ssDNA is a precursor of the ultimate double-strand breaks (DSBs). Indeed, mutations that render the cell incapable of mediating and protecting the replication forks produce ssDNA genome-wide at high frequency and cause lethality when encountering DNA damage or replication perturbation. Here we describe two related microarray-based methods to query genetically unstable yeast cultures, such as the mec1 and rad53 mutants. These mutants are defective in central protein kinases in the checkpoint pathway. To induce ssDNA and DSB formation in these mutants, we utilize hydroxyurea, a drug that causes nucleotide shortage in the cell. |
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