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Updated: Jul 12, 2025
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Following Cell-fate in E. coli After Infection by Phage Lambda
Published on: October 14, 2011
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The Dynamics of Synthesis and Localization of Jumbo Phage RNA Polymerases inside Infected Cells
Daria Antonova1, Viktoriia V Belousova1, Erik Zhivkoplias1
1Research Center of Nanobiotechnologies, Peter the Great St. Petersburg Polytechnic University, St. Petersburg 195251, Russia.
Viruses
|October 28, 2023
Summary
Jumbo bacteriophage phiKZ injects its virion RNA polymerase (vRNAP) into Pseudomonas aeruginosa cells, excluding it from the phage nucleus. The non-virion RNAP (nvRNAP) localizes within the nucleus, enabling coordinated viral gene expression.
Area of Science:
- Microbiology
- Molecular Biology
- Virology
Background:
- Jumbo bacteriophage phiKZ forms a nucleus-like structure in Pseudomonas aeruginosa.
- Viral gene transcription is mediated by two phage-encoded RNA polymerases (RNAPs): virion RNAP (vRNAP) and non-virion RNAP (nvRNAP).
Purpose of the Study:
- To investigate the localization dynamics of phage RNAPs during phiKZ infection.
- To understand the spatial organization of viral transcription machinery.
Main Methods:
- Directly observing the injection and localization of vRNAP.
- Tracking the localization of nvRNAP during infection using microscopy.
Main Results:
- PhiKZ vRNAP is successfully injected into infected cells.
- Injected vRNAP is excluded from the phage nucleus.
- nvRNAP is synthesized post-infection and localizes within the phage nucleus.
Conclusions:
- Spatial separation of vRNAP and nvRNAP is crucial for phiKZ infection.
- The distinct localization of phage RNAPs facilitates coordinated temporal gene expression.
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