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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...

Immunoprecipitation

Immunoprecipitation

Immunoprecipitation, or IP, is a widely used technique that employs protein-antibody interactions to isolate proteins or protein complexes in their native state for studying protein-protein interactions, quaternary structures, or supramolecular complexes. Various modifications of the technique, including chromatin IP, cross-linking IP, and fluorescence IP, are commonly used.
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...

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Updated: Jun 17, 2025

Chromatin Isolation by RNA Purification ChIRP

Chromatin Isolation by RNA Purification ChIRP

Published on: March 25, 2012

Reverse Chromatin Immunoprecipitation (R-ChIP).

Xuejing Wen^1,2, Yucheng Wang^3,4,5

¹State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China.

Methods in Molecular Biology (Clifton, N.J.)

|August 14, 2024

Summary

This summary is machine-generated.

We developed reverse chromatin immunoprecipitation (R-ChIP) to identify DNA-binding proteins. This novel method captures proteins associated with specific DNA fragments for mass spectrometry analysis, enabling efficient identification.

Keywords:

Biotin-streptavidin system Chromatin immunoprecipitation DNA probe DNA-associated proteins Gene-centered approach Hybridization Mass spectrometry Upstream regulators

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Published on: April 19, 2013

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Last Updated: Jun 17, 2025

Chromatin Isolation by RNA Purification ChIRP

Chromatin Isolation by RNA Purification ChIRP

Published on: March 25, 2012

Chromatin Immunoprecipitation ChIP Protocol for Low-abundance Embryonic Samples

Chromatin Immunoprecipitation ChIP Protocol for Low-abundance Embryonic Samples

Published on: August 29, 2017

Generation of High Quality Chromatin Immunoprecipitation DNA Template for High-throughput Sequencing ChIP-seq

Generation of High Quality Chromatin Immunoprecipitation DNA Template for High-throughput Sequencing ChIP-seq

Published on: April 19, 2013

Area of Science:

Molecular Biology
Genomics
Proteomics

Background:

DNA-protein interactions are crucial for biological processes.
Current methods for identifying DNA-binding proteins have limitations.

Purpose of the Study:

To develop a novel method for capturing and identifying DNA-associated proteins.
To enable the analysis of proteins binding to specific DNA sequences or chromatin fragments.

Main Methods:

Developed reverse chromatin immunoprecipitation (R-ChIP).
Utilized biotin-labeled DNA probes to isolate target DNA fragments and associated proteins.
Analyzed captured proteins using mass spectrometry.

Main Results:

Successfully captured DNA-associated proteins with high quantity and purity.
Demonstrated the efficacy of R-ChIP for identifying DNA-binding proteins.

Conclusions:

R-ChIP is an effective technology for identifying DNA-associated proteins.
This method advances the study of DNA-protein interactions and gene regulation.