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Updated: Aug 5, 2026

Chromatin Immunoprecipitation Assay for the Identification of Arabidopsis Protein-DNA Interactions In Vivo
Published on: January 14, 2016
Use of protein biotinylation in vivo for chromatin immunoprecipitation
Antoine Viens1, Undine Mechold, Heike Lehrmann
1Laboratoire Oncogénse, Différenciation et Transduction du Signal, Institut André Lwoff, 7 rue Guy Moquet, 94800 Villejuif, France.
Abstract:
We describe a system designed to express biotinylated proteins in mammalian cells in vivo and its application to the study of protein-DNA interactions in vivo by chromatin immunoprecipitation (ChIP). The system is based on coexpression of the target protein fused to a short biotin acceptor domain together with the biotinylating enzyme BirA from Escherichia coli. The superior strength of the biotin-avidin interaction allows one to employ more stringent washing conditions in the ChIP protocol, resulting in a better signal/noise ratio.
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