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PuSH - Publikationsserver des Helmholtz Zentrums München: In Vivo ChIP-Seq of nuclear receptors: A rough guide to transform frozen tissues into high-confidence genome-wide binding profiles.
Chromatin immunoprecipitation coupled to next generation sequencing (ChIP-seq) is a powerful tool to map context-dependent genome-wide binding of nuclear hormone receptors and their coregulators. This information can provide important mechanistic insight into where, when and how DNA–protein interactions are linked to target gene regulation. Here we describe a simple, yet reliable ChIP-seq method, including nuclear isolation from frozen tissue samples, cross-linking DNA–protein complexes, chromatin shearing, immunoprecipitation, and purification of ChIP DNA. We also include a standard ChIP-seq data analysis pipeline to elaborate and analyze raw single-end or paired-end sequencing data, including quality control steps, peak calling, annotation, and motif enrichment.