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Phage Phenomics: Physiological Approaches to Characterize Novel Viral Proteins
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Phage Phenomics: Physiological Approaches to Characterize Novel Viral Proteins

Published on: June 11, 2015

The structural proteome of Pseudomonas aeruginosa bacteriophage phiKMV

Rob Lavigne1, Jean-Paul Noben2, Kirsten Hertveldt1

  • 1Laboratory of Gene Technology, Katholieke Universiteit Leuven, Kasteelpark Arenberg 21, Leuven, B-3001, Belgium.

Microbiology (Reading, England)
|January 27, 2006
PubMed

Insights

Researchers analyzed the structural proteins of the phiKMV bacteriophage using mass spectrometry. This study provides a detailed view of phiKMV

Area of Science:

  • Microbiology
  • Structural Biology
  • Proteomics

Background:

  • Bacteriophages are viruses that infect bacteria and are crucial in microbial ecosystems.
  • Understanding phage structure is key to their function and interaction with host bacteria.
  • phiKMV is a lytic bacteriophage that targets Pseudomonas aeruginosa, a significant opportunistic pathogen.

Purpose of the Study:

  • To comprehensively analyze the structural proteome of the phiKMV bacteriophage.
  • To identify key structural proteins involved in phage assembly and function.
  • To compare the structural proteome of phiKMV with that of other related phages, such as phage T7.

Main Methods:

  • Proteins of purified phiKMV particles were separated using SDS-PAGE.
  • Liquid chromatography-mass spectrometry (LC-MS) was employed for protein identification.
  • Whole-phage shotgun analysis (WSA), involving in-solution trypsin digestion and HPLC-based peptide separation, was performed.
  • Gas-phase fractionation was utilized to enhance MS analysis of complex peptide mixtures.

Main Results:

  • A comprehensive catalog of structural proteins of the phiKMV bacteriophage was generated.
  • The analysis identified proteins essential for the structural integrity and assembly of phiKMV.
  • Subtle structural differences between phiKMV and phage T7 were suggested by the proteomic data.

Conclusions:

  • The study provides an in-depth understanding of the phiKMV structural proteome.
  • The findings contribute to the knowledge of bacteriophage structure and evolution.
  • The detailed proteomic data can inform future research on phiKMV biology and its potential applications.

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