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DNA Bacteriophages

Bacteriophages, or phages, are viruses that specifically infect bacteria, utilizing their genetic material to hijack host cellular machinery for replication. DNA bacteriophages employ single-stranded DNA (ssDNA) or double-stranded DNA (dsDNA) genomes. These phages exhibit diverse replication strategies and host interactions, influencing their ecological roles and applications in biotechnology and medicine.ssDNA BacteriophagesssDNA phages, with their small genomes, utilize unique strategies to...
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Bacteriophages are found throughout the human body. They may even outnumber eukaryotic viruses, forming an important and dynamic component of the human virome. Indeed, phages represent the most abundant viral entities, with densities in the gut reaching up to 10⁹ particles per gram of fecal matter, and many belonging to orders such as Caudovirales and Microviridae, while a substantial proportion remains unclassified as viral “dark matter.”Lysogeny and Genetic ExchangeIn the gut, bacteriophages...
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Phage Phenomics: Physiological Approaches to Characterize Novel Viral Proteins
09:40

Phage Phenomics: Physiological Approaches to Characterize Novel Viral Proteins

Published on: June 11, 2015

Phamerator: a bioinformatic tool for comparative bacteriophage genomics.

Steven G Cresawn1, Matt Bogel, Nathan Day

  • 1Department of Biology, James Madison University, 820 Madison Dr, MSC 7801, Harrisonburg, VA 22807 USA. cresawsg@jmu.edu

BMC Bioinformatics
|October 14, 2011
PubMed
Summary

Phamerator is a new bioinformatic tool that groups bacteriophage genes into families. This tool aids in comparative genomic analysis and visualizing phage genome relationships.

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Area of Science:

  • Genomics
  • Bioinformatics
  • Microbiology

Background:

  • Bacteriophage genomes exhibit mosaic architectures.
  • Many small open reading frames (ORFs) in bacteriophages have unknown functions.
  • These features pose challenges for annotation, comparative analysis, and representation.

Purpose of the Study:

  • To introduce Phamerator, a novel bioinformatic tool.
  • To facilitate the annotation and comparative analysis of bacteriophage genomes.
  • To enable better representation of phage genomic data.

Main Methods:

  • Phamerator sorts protein-coding genes into 'phamilies' based on sequence relatedness.
  • It utilizes pairwise comparisons to build a comprehensive database of gene relationships.
  • The tool generates genome maps and 'phamily circle' representations.

Main Results:

  • Phamerator successfully categorizes genes into related families.
  • Generated genome maps integrate nucleotide and amino acid sequence relationships, and conserved domains.
  • Phamily circle representations aid in analyzing gene evolutionary histories and horizontal gene transfer.

Conclusions:

  • Phamerator is an effective tool for comparative genomic analysis of bacteriophages.
  • It provides valuable comparative representations of bacteriophage genomes.
  • The tool enhances the understanding of phage genome evolution and gene dynamics.