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Chromatin Immunoprecipitation for Studying Chromosomal Localization of Meiotic Proteins in Maize

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Chromatin immunoprecipitation (ChIP) is a method that allows identification of chromosomal sites occupied by specific proteins. In this technique, chromatin is extracted from cells, sheared, and, using a specific antibody, enriched in fragments that contain a protein of interest. Genomic location of the protein can then be identified by hybridization of the resulting DNA to tiling microarrays or by sequencing. Thanks to advances in high-throughput sequencing methods, studying protein localization using ChIP has become possible even in species with relatively large genomes. Here, we describe a ChIP protocol that we developed to examine localization of meiotic proteins in maize.
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