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Related Experiment Videos

Codon usage in Actinobacillus actinomycetemcomitans

J B Kaplan1, D H Fine

  • 1Department of Oral Pathology and Biology, New Jersey Dental School, University of Medicine and Dentistry of New Jersey, Newark 07103, USA.

FEMS Microbiology Letters
|June 19, 1998
PubMed
Summary
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Actinobacillus actinomycetemcomitans codon usage analysis reveals distinct gene groups. Findings suggest horizontal gene transfer may explain genomic variations in this bacterium.

Area of Science:

  • Microbiology
  • Genomics
  • Molecular Biology

Background:

  • Actinobacillus actinomycetemcomitans is a bacterium with implications in periodontal disease.
  • Understanding its genomic composition and gene expression is crucial for developing targeted interventions.
  • Codon usage bias is a significant factor influencing gene expression and evolution.

Purpose of the Study:

  • To analyze the codon usage patterns of Actinobacillus actinomycetemcomitans genes.
  • To investigate potential correlations between gene function, G+C content, and codon bias.
  • To explore evidence for horizontal gene transfer within the A. actinomycetemcomitans genome.

Main Methods:

  • Analysis of codon usage for 21 genes (5800 codons) from Actinobacillus actinomycetemcomitans.

Related Experiment Videos

  • Categorization of genes based on function and guanine-cytosine (G+C) content.
  • Comparison of G+C content between different functional gene groups.

    • Main Results:

    • A. actinomycetemcomitans genes were divided into two distinct groups based on function and G+C content.
    • Genes involved in basic cellular functions had an average G+C content of 48%.
    • Genes related to leukotoxin, insertion sequences, and plasmids had a lower average G+C content of 36%.

    Conclusions:

    • The observed differences in G+C content suggest potential horizontal gene transfer events in the A. actinomycetemcomitans genome.
    • The codon usage data provides a valuable resource for computational prediction of protein-coding regions.
    • These findings can aid in the design of degenerate oligonucleotide probes for genetic analysis.