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CUT&Tag for Mapping In Vivo Protein-DNA Interactions in Plants

Methods in Molecular Biology, ISSN: 1940-6029, Vol: 2698, Page: 109-117
2023
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Book Chapter Description

Histone post-translational modifications and transcription factors (TFs) play vital roles in regulating gene expression. A comprehensive understanding of transcriptional regulation requires genome-wide mapping of chromatin features such as histone modifications and TF binding sites. Here, we describe a detailed nucleus CUT&Tag (Cleavage Under Targets and Tagmentation) protocol, which is an antibody-guided in situ protein-DNA interaction mapping method using protein A/G fused Tn5 transposase. Compared with regular ChIP-seq in plants, nucleus CUT&Tag (nCUT&Tag) omits many steps such as sonication and immunoprecipitation, thus saving much time and making it possible to efficiently profile chromatin features from low-input and even single cells with higher signal-to-noise ratio.

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