title: Analyzing histone modification using crosslinked chromatin treated with micrococcal nuclease.
abstract: Epigenetic processes involve alterations in the covalent modification of histones, which are driven by sequence-specific transcription factors recruiting the enzymatic machinery performing these reactions. Such histone modifications alter the charge or biochemical surface of the chromatin fiber and also serve as "docking" sites for transcription factor and chromatin remodelling complexes. Examining histone modification patterns is vital if we want to understand how transcription complexes establish patterns of gene expression. Histone modification can be quite localized and sometimes only involves a few nucleosomes. We therefore established a chromatin immunoprecipitation procedure that uses crosslinked chromatin allowing the isolation of small chromatin fragments while simultaneously minimizing histone movement during chromatin preparation.
authors.affiliation: University of Leeds, St. James's University Hospital, Molecular Unit, Leeds, United Kingdom.
authors.forename: Pascal
authors.initials: P
authors.lastname: Lefevre
authors.forename: Constanze
authors.initials: C
authors.lastname: Bonifer
mesh_terms: D000818:Animals; D002843:Chromatin / Q000737:chemistry*; D047369:Chromatin Immunoprecipitation / Q000379:methods*; D003432:Cross-Linking Reagents / Q000494:pharmacology*; D004247:DNA / Q000737:chemistry; D005557:Formaldehyde / Q000494:pharmacology; D005821:Genetic Techniques; D006657:Histones / Q000737:chemistry*; D008836:Micrococcal Nuclease / Q000494:pharmacology*; D009707:Nucleosomes / Q000378:metabolism; D016133:Polymerase Chain Reaction
chemical_list: D002843:Chromatin; D003432:Cross-Linking Reagents; D006657:Histones; D009707:Nucleosomes; D005557:Formaldehyde; D004247:DNA; D008836:Micrococcal Nuclease