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Related Concept Videos

Chromatin Immunoprecipitation- ChIP02:36

Chromatin Immunoprecipitation- ChIP

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Chromatin immunoprecipitation, or ChIP, is an antibody-based technique used to identify sites on DNA that bind to transcription factors of interest or histone proteins. It also helps determine the type of histone modifications such as acetylation, phosphorylation, or methylation.
Types of ChIP
ChIP can be divided into two types - X-ChIP and N-ChIP. X-ChIP involves in vivo cross-linking of histones and regulatory proteins to DNA, fragmenting the DNA by sonication, and isolating the protein-DNA...
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Related Experiment Video

Updated: Jul 23, 2025

Genome-wide Mapping of Protein-DNA Interactions with ChEC-seq in Saccharomyces cerevisiae
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Simultaneous Mapping of DNA Binding and Nucleosome Positioning with SpLiT-ChEC.

Orion G B Banks1, Michael J Harms1,2, Jeffrey N McKnight1,3

  • 1Institute of Molecular Biology, University of Oregon, Eugene OR 97403, USA.

Biorxiv : the Preprint Server for Biology
|July 18, 2023
PubMed
Summary

Researchers developed SpyCatcher Linked Targeting of Chromatin Endogenous Cleavage (SpLiT-ChEC) to map protein-DNA interactions and nucleosome positioning simultaneously. This novel method offers precise temporal control for studying chromatin organization.

Keywords:
chromatin organizationnucleosome positioningtranscription factor binding

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Area of Science:

  • Molecular Biology
  • Genomics
  • Epigenetics

Background:

  • Chromatin organization, including nucleosome positioning and protein-DNA interactions, dictates transcriptional profiles in eukaryotes.
  • Existing methods like ChIP-Seq and MNase-Seq analyze protein-DNA binding or nucleosome localization separately.
  • Current assays often rely on antibodies with nonspecific binding or protein modifications that can alter function.

Conclusions:

  • SpLiT-ChEC is a powerful new technique for simultaneously analyzing protein-DNA interactions and nucleosome organization.
  • The assay offers advantages over existing methods by avoiding nonspecific antibodies and protein adducts.
  • This method provides a valuable tool for monitoring dynamic changes in chromatin structure under various conditions and cell cycle stages.