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Genome Annotation and Assembly

Genome Annotation and Assembly

The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.

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Related Experiment Video

Updated: Mar 29, 2026

High-throughput Identification of Gene Regulatory Sequences Using Next-generation Sequencing of Circular Chromosome Conformation Capture 4C-seq

High-throughput Identification of Gene Regulatory Sequences Using Next-generation Sequencing of Circular Chromosome Conformation Capture 4C-seq

Published on: October 5, 2018

Metagenome Analysis Exploiting High-Throughput Chromosome Conformation Capture (3C) Data.

Martial Marbouty¹, Romain Koszul¹

¹Institut Pasteur, Department of Genomes and Genetics, Groupe Régulation Spatiale des Génomes, 75015 Paris, France; CNRS, UMR 3525, 75015 Paris, France.

Trends in Genetics : TIG

|November 27, 2015

Summary

A new method, meta3C, uses DNA collisions to assemble genomes from complex microbial communities. This technique aids in sequencing individual species and linking mobile genetic elements to their hosts.

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Last Updated: Mar 29, 2026

High-throughput Identification of Gene Regulatory Sequences Using Next-generation Sequencing of Circular Chromosome Conformation Capture 4C-seq

High-throughput Identification of Gene Regulatory Sequences Using Next-generation Sequencing of Circular Chromosome Conformation Capture 4C-seq

Published on: October 5, 2018

Hi-C: A Method to Study the Three-dimensional Architecture of Genomes.

Hi-C: A Method to Study the Three-dimensional Architecture of Genomes.

Published on: May 6, 2010

Deciphering High-Resolution 3D Chromatin Organization via Capture Hi-C

Deciphering High-Resolution 3D Chromatin Organization via Capture Hi-C

Published on: October 14, 2022

Area of Science:

Microbiology
Genomics
Bioinformatics

Background:

Microbial communities are vital environmental components.
Assembling individual genomes from complex metagenomes is challenging.
Current genomic analysis methods struggle with species-specific genome reconstruction.

Purpose of the Study:

To introduce and evaluate a novel method for metagenome assembly and analysis.
To overcome limitations in sequencing individual genomes from mixed microbial populations.
To enable the characterization of microbial genomes and associated extrachromosomal elements.

Main Methods:

Utilizing chromosome conformation capture (3C) technology for metagenomic analysis.
Quantifying DNA molecule collisions to infer co-localization within cellular compartments.
Applying the meta3C approach to complex species mixes for genome reconstruction.

Main Results:

Successfully characterized genomes from complex microbial populations.
Demonstrated the ability to identify and assemble discrete species genomes.
Showed potential for assigning plasmids, phages, and mobile elements to their host genomes.

Conclusions:

Chromosome 3D conformation signatures offer a powerful tool for microbial genomics.
Meta3C provides a promising perspective for de novo genome sequencing in complex environments.
This method facilitates a deeper understanding of microbial community structure and function.