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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: Apr 27, 2026

Generation of Native Chromatin Immunoprecipitation Sequencing Libraries for Nucleosome Density Analysis

Generation of Native Chromatin Immunoprecipitation Sequencing Libraries for Nucleosome Density Analysis

Published on: December 12, 2017

Accelerated chromatin biochemistry using DNA-barcoded nucleosome libraries.

Uyen T T Nguyen¹, Lenka Bittova², Manuel M Müller²

¹1] Department of Chemistry, Princeton University, Princeton, New Jersey, USA. [2].

|July 7, 2014

Summary

This summary is machine-generated.

Researchers developed a new platform to study how proteins interact with histone post-translational modifications (PTMs) on chromatin. This technology accelerates understanding of epigenetic regulation by analyzing DNA-barcoded nucleosome libraries with various PTM combinations.

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Area of Science:

Epigenetics and Molecular Biology
Chromatin Biology
Biochemistry

Background:

Understanding histone post-translational modifications (PTMs) and their recognition by chromatin-associated factors is crucial in epigenetics.
Current methods for studying these interactions are often slow and lack high throughput.
Deciphering the complex interplay of PTMs and their effectors is essential for understanding gene regulation.

Purpose of the Study:

To introduce a versatile platform that accelerates biochemical investigations into chromatin recognition and signaling.
To enable high-throughput analysis of how nuclear factors bind to specific PTM patterns.
To investigate PTM cross-talk mechanisms influencing further modification deposition.

Main Methods:

Streamlined semisynthesis of DNA-barcoded nucleosome libraries with defined PTM combinations.
Chromatin immunoprecipitation (ChIP) of these libraries after treatment with purified chromatin effectors or nuclear proteome.
Multiplexed DNA-barcode sequencing for ultrasensitive data collection.

Main Results:

Generated thousands of biochemical data points on nuclear factor binding preferences for PTM patterns.
Revealed how existing PTMs, individually or synergistically, influence subsequent PTM deposition.
Demonstrated PTM cross-talk mechanisms mediated by chromatin-binding proteins.

Conclusions:

The developed platform significantly accelerates biochemical studies of chromatin recognition and signaling.
This high-throughput, ultrasensitive technology aids in deciphering molecular controls of chromatin.
Facilitates a deeper understanding of epigenetic mechanisms and their role in cellular processes.