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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 21, 2026

Chromatin Interaction Analysis with Paired-End Tag Sequencing ChIA-PET for Mapping Chromatin Interactions and Understanding Transcription Regulation

Chromatin Interaction Analysis with Paired-End Tag Sequencing ChIA-PET for Mapping Chromatin Interactions and Understanding Transcription Regulation

Published on: April 30, 2012

Proximity labeling tools for studying chromatin interactomes.

Feifei Tong¹, Ciaran P Seath²

¹The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, Jupiter, FL, 33458, United States.

Current Opinion in Chemical Biology

|April 19, 2026

Summary

This summary is machine-generated.

Proximity labeling technologies allow detailed study of protein and nucleic acid interactions within the cell nucleus. These advanced tools offer new ways to map chromatin interactomes and understand cellular processes.

Keywords:

Chromatin Nucleic acid interactomes Proximity labeling Sub cellular proteomics

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Published on: August 14, 2020

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Chromatin Interaction Analysis with Paired-End Tag Sequencing ChIA-PET for Mapping Chromatin Interactions and Understanding Transcription Regulation

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High-Resolution Mapping of Protein-DNA Interactions in Mouse Stem Cell-Derived Neurons using Chromatin Immunoprecipitation-Exonuclease ChIP-Exo

High-Resolution Mapping of Protein-DNA Interactions in Mouse Stem Cell-Derived Neurons using Chromatin Immunoprecipitation-Exonuclease ChIP-Exo

Published on: August 14, 2020

Area of Science:

Molecular Biology
Cell Biology
Genomics

Background:

Studying protein and nucleic acid interactions in chromatin is difficult due to the dense and dynamic nuclear environment.
Proximity labeling technologies provide solutions for characterizing chromatin microenvironments in living cells with spatial and temporal resolution.

Purpose of the Study:

To review protein-centered and nucleic acid-centered proximity labeling approaches for chromatin research.
To highlight recent advances in labeling chemistry, photocatalytic platforms, and targeting strategies.
To discuss the impact of these technologies on measuring chromatin interactomes.

Main Methods:

Protein-centered approaches: nanoscale/mesoscale photocatalytic systems, genetically encoded modalities, antibody-directed labeling.
Nucleic acid-centered platforms: CRISPR guidance, hybridization-based targeting, structure-specific sensors.
Application to study histone interactions, PTM-dependent microenvironments, and protein complexes at genomic loci, RNA species, and noncanonical structures.

Main Results:

Recent advances have improved the precision and efficiency of proximity labeling for chromatin biology.
These technologies enable mapping of histone-associated networks and PTM-dependent microenvironments.
CRISPR-guided and other nucleic acid-centered methods map protein complexes at specific genomic sites and RNA structures.

Conclusions:

Proximity labeling technologies are transforming the measurement of chromatin interactomes.
Key challenges and future opportunities exist for developing next-generation tools for chromatin research.