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[×ÊÔ´] ¡¾×ÊÁÏ¡¿An efficient ChIP protocol

An efficient chromatin immunoprecipitation (ChIP) protocol for studying histone modifications in Arabidopsis plants
Chromatin immunoprecipitation (ChIP) is a powerful tool for the characterization of covalent histone modifications and DNA¨Chistone
interactions in vivo. The procedure includes DNA¨Chistone cross-linking in chromatin, shearing DNA into smaller fragments,
immunoprecipitation with antibodies against the histone modifications of interest, followed by PCR identification of associated DNA sequences. In this protocol, we describe a simplified and optimized version of ChIP assay by reducing the number of experimental steps and isolation solutions and shortening preparation times. We include a nuclear isolation step before chromatin shearing, which provides a good yield of high-quality DNA resulting in at least 15 lg of DNA from each immunoprecipitated sample (from 0.2 to 0.4 g
of starting tissue material) sufficient to test Z25 genes of interest. This simpler and cost-efficient protocol has been applied for histone-modification studies of various Arabidopsis thaliana tissues and is easy to adapt for other systems as well.[ Last edited by silicare on 2012-11-1 at 10:44 ]
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  • 2012-10-08 15:44:54, 599.17 K

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