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Related Concept Videos

Genomic DNA in Prokaryotes00:46

Genomic DNA in Prokaryotes

The genome of most prokaryotic organisms consists of double-stranded DNA organized into one circular chromosome in a region of cytoplasm called the nucleoid. The chromosome is tightly wound, or supercoiled, for efficient storage. Prokaryotes also contain other circular pieces of DNA called plasmids. These plasmids are smaller than the chromosome and often carry genes that confer adaptive functions, such as antibiotic resistance.
Genomic Diversity in Bacteria
Although bacterial genomes are much...
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.
Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
Ribosome Profiling02:24

Ribosome Profiling

Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique helps...

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Related Experiment Video

Updated: May 10, 2026

Hybrid De Novo Genome Assembly for the Generation of Complete Genomes of Urinary Bacteria using Short- and Long-read Sequencing Technologies
12:08

Hybrid De Novo Genome Assembly for the Generation of Complete Genomes of Urinary Bacteria using Short- and Long-read Sequencing Technologies

Published on: August 20, 2021

EcoGene-RefSeq: EcoGene tools applied to the RefSeq prokaryotic genomes.

Jindan Zhou1, Andrew J Richardson, Kenneth E Rudd

  • 1Department of Biochemistry and Molecular Biology, The Miller School of Medicine at the University of Miami, Miami, FL 33136, USA. j.zhou1@miami.edu

Bioinformatics (Oxford, England)
|June 6, 2013
PubMed
Summary
This summary is machine-generated.

EcoGene.org provides daily updates for the Escherichia coli K-12 MG1655 genome, enhancing annotation accuracy. A new resource, EcoGene-RefSeq, extends these tools to over 2400 prokaryotic genomes in the RefSeq database.

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Last Updated: May 10, 2026

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12:08

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Published on: August 20, 2021

Novel Sequence Discovery by Subtractive Genomics
09:40

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Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations
08:03

Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations

Published on: December 7, 2021

Area of Science:

  • Microbiology
  • Bioinformatics
  • Genomics

Background:

  • EcoGene.org is a dedicated genome database for Escherichia coli K-12 substrain MG1655.
  • It is updated daily with information from biomedical literature and in-house analysis.
  • EcoGene contributes significantly to annotation updates for the MG1655 Genbank record.

Purpose of the Study:

  • To develop EcoGene-RefSeq as a standalone internet resource.
  • To facilitate the use of EcoGene-based tools on prokaryotic genome records.
  • To leverage the extensive RefSeq database for broader genomic analysis.

Main Methods:

  • Daily revision of EcoGene.org using literature and in-house analysis.
  • Integration of EcoGene data with the National Center for Biotechnology Information's Reference Sequence (RefSeq) database.
  • Development of a web interface for EcoGene-RefSeq.

Main Results:

  • EcoGene serves as a primary source for MG1655 Genbank record annotation updates.
  • The RefSeq database contains over 2400 completed prokaryotic genome records.
  • EcoGene-RefSeq is being developed to apply EcoGene tools across these RefSeq records.

Conclusions:

  • EcoGene-RefSeq will enhance the utility of EcoGene tools for a wide range of prokaryotic genomes.
  • This resource supports community-driven annotation efforts.
  • It provides a valuable platform for comparative genomics and functional analysis.