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Chromatin Immunoprecipitation- ChIP

Chromatin Immunoprecipitation- ChIP

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: Dec 29, 2025

The ChIP-exo Method: Identifying Protein-DNA Interactions with Near Base Pair Precision

The ChIP-exo Method: Identifying Protein-DNA Interactions with Near Base Pair Precision

Published on: December 23, 2016

ChExMix: A Method for Identifying and Classifying Protein-DNA Interaction Subtypes.

Naomi Yamada¹, Prashant Kumar Kuntala¹, B Franklin Pugh¹

¹Center for Eukaryotic Gene Regulation, Department of Biochemistry & Molecular Biology, The Pennsylvania State University, University Park, Pennsylvania.

Journal of Computational Biology : a Journal of Computational Molecular Cell Biology

|February 6, 2020

Summary

This summary is machine-generated.

The ChIP-exo mixture model (ChExMix) detects diverse protein-DNA interactions from single experiments. This method reveals common regulatory protein modules binding DNA, aiding in understanding gene regulation.

Keywords:

ChIP-exo ChIP-seq protein–DNA binding event detection protein–DNA interactions transcription factors

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Genome-wide Mapping of Protein-DNA Interactions with ChEC-seq in Saccharomyces cerevisiae

Genome-wide Mapping of Protein-DNA Interactions with ChEC-seq in Saccharomyces cerevisiae

Published on: June 3, 2017

Area of Science:

Genomics
Molecular Biology
Bioinformatics

Background:

Regulatory proteins interact with the genome through various direct and indirect mechanisms.
Understanding these diverse interactions is crucial for deciphering gene regulation.

Purpose of the Study:

To summarize the features and applications of the ChIP-exo mixture model (ChExMix).
To demonstrate ChExMix's capability in detecting protein-DNA binding event subtypes without high-resolution data.

Main Methods:

Utilizing the ChIP-exo mixture model (ChExMix) to analyze ChIP-exo data.
Leveraging protein-DNA cross-linking signatures and DNA motifs for subtype discovery.
Applying ChExMix to 393 ChIP-seq data profiles in K562 cells.

Main Results:

ChExMix successfully identifies binding event subtypes in ChIP-exo and ChIP-seq data.
Similar binding event subtypes were observed across multiple proteins.
Evidence suggests the presence of colocalized regulatory protein modules.

Conclusions:

ChExMix is a robust tool for characterizing protein-DNA binding interaction modes.
The model can utilize data from various protein-DNA interaction assays.
Findings support the existence of coordinated regulatory protein complex recruitment to DNA.