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Updated: Feb 5, 2026

Generation of Native Chromatin Immunoprecipitation Sequencing Libraries for Nucleosome Density Analysis

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Published on: December 12, 2017

5C Analysis of 3C, ChIP-Loop, and Control Libraries.

Tae Hoon Kim, Job Dekker

Cold Spring Harbor Protocols

|September 6, 2018

Summary

This summary is machine-generated.

This protocol details the 5C method for detecting ligation products in 3C, ChIP-loop, and control libraries. It emphasizes quality assessment via PCR and describes primer design for determining interaction frequencies.

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Area of Science:

Molecular Biology
Genomics
Biotechnology

Background:

The Chromosome Conformation Capture (3C) technique and its variations like ChIP-loop are crucial for studying 3D genome organization.
Accurate detection of ligation products is essential for reliable analysis of DNA interactions.

Purpose of the Study:

To describe a detailed protocol for the 5C method.
To enable the detection of ligation products in various chromatin conformation capture libraries.
To provide guidance on primer design and interaction frequency determination.

Main Methods:

The protocol utilizes purified 3C, ChIP-loop, or control libraries.
Quality assessment of libraries is performed using semiquantitative polymerase chain reaction (PCR).
The 5C method involves specific primer design and analysis of ligation products.

Main Results:

The 5C method allows for the detection of ligation products in prepared libraries.
Semiquantitative PCR confirms the detectability of ligation products.
The protocol facilitates the preferential ligation of nearby restriction fragments over distant ones.

Conclusions:

The described 5C protocol provides a robust method for analyzing DNA interactions.
It ensures reliable detection of ligation products, crucial for 3D genome studies.
The protocol includes essential steps for primer design and interaction frequency calculation.