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Related Concept Videos

Genome Annotation and Assembly03:36

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.
Sanger Sequencing01:57

Sanger Sequencing

DNA sequencing is a fundamental technique that is routinely used in the biological sciences. This method can be applied to a range of questions at different scales - from the sequencing of a cloned DNA fragment or the study of a mutation in a gene up to whole-genome sequencing. However, despite the widespread use of sequencing today, it was not until 1977 that Fredrick Sanger and his collaborators developed the chain-termination method to decode DNA sequences. It relies on the separation of a...

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Related Experiment Video

Updated: Jun 17, 2026

Capturing Chromosome Conformation Across Length Scales
10:15

Capturing Chromosome Conformation Across Length Scales

Published on: January 20, 2023

Simplified DGS procedure for large-scale genome structural study.

Yong-Chul Jung1, Jia Xu, Jun Chen

  • 1Center for Functional Genomics, ENH Research Institute, Northwestern University, 1001 University Place, Evanston, IL 60201, USA.

Biotechniques
|January 1, 2010
PubMed
Summary
This summary is machine-generated.

Ditag genome scanning (DGS) is a revised DNA sequencing method for large-scale genome structural studies. This enhanced protocol improves genome coverage and resolution for analyzing multiple genomes.

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Area of Science:

  • Genomics
  • Molecular Biology
  • Bioinformatics

Background:

  • Ditag genome scanning (DGS) is a method for analyzing genome structure using next-generation DNA sequencing.
  • The original DGS protocol had limitations for large-scale genomic studies.

Purpose of the Study:

  • To revise the Ditag genome scanning (DGS) protocol for enhanced efficiency and scalability.
  • To enable high-resolution analysis of multiple genomes simultaneously.

Main Methods:

  • Revised DGS protocol replacing in vivo cloning with in vitro adaptor ligation.
  • Eliminated ditag concatemerization steps.
  • Utilized Solexa or SOLiD sequencers for ditag sequence collection instead of 454 sequencer.

Main Results:

  • Substantial improvements in genome coverage and resolution.
  • Enabled simultaneous analysis of multiple genomes.
  • Increased efficiency for large-scale genome structural studies.

Conclusions:

  • The revised DGS protocol significantly enhances the capability for large-scale genome structural analysis.
  • This optimized method provides a powerful tool for comparative genomics and structural variation studies.