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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...

Heterochromatin

Heterochromatin

The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions that take up more dye are called heterochromatin. Heterochromatin is further classified into two forms – constitutive heterochromatin and facultative heterochromatin.
Constitutive heterochromatin: It is a highly compact region of chromatin that is mostly concentrated in the centromere and telomere. Unlike euchromatin, the amino acid at 9th...

Heterochromatin

Heterochromatin

The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions that take up more dye are called heterochromatin. Heterochromatin is further classified into two forms – constitutive heterochromatin and facultative heterochromatin.
Constitutive heterochromatin: It is a highly compact region of chromatin that is mostly concentrated in the centromere and telomere. Unlike euchromatin, the amino acid at 9th...

Euchromatin

Euchromatin

The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions take up more dye, appearing darker, while the less-compact areas take up less dye and appear lighter. Based on the compaction level, chromatins are classified into two primary forms – euchromatin and heterochromatin.
Euchromatin is the less dense region of the chromatin and stains lighter. Euchromatin contains histone H3 extensively...

Euchromatin

Euchromatin

The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions take up more dye, appearing darker, while the less-compact areas take up less dye and appear lighter. Based on the compaction level, chromatins are classified into two primary forms – euchromatin and heterochromatin.
Euchromatin is the less dense region of the chromatin and stains lighter. Euchromatin contains histone H3 extensively...

Chromatin Packaging

Chromatin Packaging

Each human somatic cell contains 6 billion base pairs of DNA. Each base pair is 0.34 nm long, meaning each diploid cell contains a staggering 2 meters of DNA. This long DNA strand is packed inside a nucleus measuring only 10-20 microns in diameter with the help of specialized DNA-binding proteins called histones. Together they form a compact DNA-protein complex called chromatin. The chromatin is further compacted into higher-order structures. The highest level of compaction is achieved during...

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Related Experiment Video

Updated: Jul 10, 2026

An Integrated Platform for Genome-wide Mapping of Chromatin States Using High-throughput ChIP-sequencing in Tumor Tissues

An Integrated Platform for Genome-wide Mapping of Chromatin States Using High-throughput ChIP-sequencing in Tumor Tissues

Published on: April 5, 2018

ChromDB: the chromatin database.

Karla Gendler¹, Tara Paulsen, Carolyn Napoli

¹BIO5 Institute, University of Arizona, Tucson, AZ 85719, USA.

Nucleic Acids Research

|October 19, 2007

Summary

ChromDB is a curated database of chromatin-associated proteins, focusing on plant chromatin remodeling proteins. It aids researchers in comparative analyses of the chromatin proteome in crops like corn and rice.

Area of Science:

Molecular Biology
Genomics
Proteomics

Background:

Chromatin remodeling involves numerous proteins regulating DNA structure for gene expression.
Understanding the chromatin proteome is crucial for biological research and education.

Purpose of the Study:

To present curated plant chromatin remodeling proteins via the ChromDB website.
To support comparative analyses of the chromatin proteome in plants, animals, and fungi.
To provide a resource for researchers and educators studying chromatin biology.

Main Methods:

Database curation of plant genes encoding chromatin-associated proteins.
Inclusion of model animal and fungal proteins for comparative analysis.
Organization of data for straightforward user understanding.

More Related Videos

Genome-wide Snapshot of Chromatin Regulators and States in Xenopus Embryos by ChIP-Seq

Genome-wide Snapshot of Chromatin Regulators and States in Xenopus Embryos by ChIP-Seq

Published on: February 26, 2015

A Multilabel Single Molecule Localization Microscopy Protocol for Investigation of Chromatin in the Dense Nuclear Environment

A Multilabel Single Molecule Localization Microscopy Protocol for Investigation of Chromatin in the Dense Nuclear Environment

Published on: June 5, 2026

Related Experiment Videos

Last Updated: Jul 10, 2026

An Integrated Platform for Genome-wide Mapping of Chromatin States Using High-throughput ChIP-sequencing in Tumor Tissues

An Integrated Platform for Genome-wide Mapping of Chromatin States Using High-throughput ChIP-sequencing in Tumor Tissues

Published on: April 5, 2018

Genome-wide Snapshot of Chromatin Regulators and States in Xenopus Embryos by ChIP-Seq

Genome-wide Snapshot of Chromatin Regulators and States in Xenopus Embryos by ChIP-Seq

Published on: February 26, 2015

A Multilabel Single Molecule Localization Microscopy Protocol for Investigation of Chromatin in the Dense Nuclear Environment

A Multilabel Single Molecule Localization Microscopy Protocol for Investigation of Chromatin in the Dense Nuclear Environment

Published on: June 5, 2026

Main Results:

The ChromDB website (http://www.chromdb.org) offers a comprehensive display of chromatin-associated proteins.
Focus on highly curated plant genes involved in chromatin remodeling.
Inclusion of diverse organisms facilitates broad comparative studies.

Conclusions:

ChromDB serves as a valuable resource for the research and teaching communities.
Facilitates understanding of chromatin proteomes, particularly in crop species.
Aids in comparative analyses to elucidate chromatin biology and DNA packaging mechanisms.