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Methods. 2012 Jun;57(2):187-95. doi: 10.1016/j.ymeth.2012.03.022. Epub 2012 Mar 24.

Genome-wide localization of replication factors.

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  • 1Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA.


Chromatin Immunoprecipitation (ChIP) is a powerful tool for the identification and characterization of protein-DNA interactions in vivo. ChIP has been utilized to study diverse nuclear processes such as transcription regulation, chromatin modification, DNA recombination and DNA replication at specific loci and, more recently, across the entire genome. Advances in genomic approaches, and whole genome sequencing in particular, have made it possible and affordable to comprehensively identify specific protein binding sites throughout the genomes of higher eukaryotes. The dynamic nature of the DNA replication program and the transient occupancy of many replication factors throughout the cell cycle present additional challenges that may not pertain to the mapping of site specific transcription factors. Here we discuss the specific considerations that need to be addressed in the application of ChIP to the genome-wide location analysis of protein factors involved in DNA replication.

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