Abstract
Identification of chromatin modifications, e.g., histone acetylation and methylation, among others, is widely carried out by using a chromatin immunoprecipitation (ChIP) strategy. The information obtained with these procedures is useful to gain an overall picture of modifications present in all cells of the population under study. It also serves as a basis to figure out the mechanisms of chromatin organization and gene regulation at the population level. However, the ultimate goal is to understand gene regulation at the level of single chromatin fibers. This requires the identification of chromatin modifications that occur at a given genomic location and within the same chromatin fiber. This is achieved by following a sequential ChIP strategy using two antibodies to distinguish different chromatin modifications. Here, we describe a sequential ChIP protocol (Re-ChIP), paying special attention to the controls needed and the required steps to obtain meaningful and reproducible results. The protocol is developed for young Arabidopsis seedlings but could be adapted to other plant materials.
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Desvoyes, B., Sequeira-Mendes, J., Vergara, Z., Madeira, S., Gutierrez, C. (2018). Sequential ChIP Protocol for Profiling Bivalent Epigenetic Modifications (ReChIP). In: Bemer, M., Baroux, C. (eds) Plant Chromatin Dynamics. Methods in Molecular Biology, vol 1675. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-7318-7_6
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DOI: https://doi.org/10.1007/978-1-4939-7318-7_6
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Publisher Name: Humana Press, New York, NY
Print ISBN: 978-1-4939-7317-0
Online ISBN: 978-1-4939-7318-7
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