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Updated: May 20, 2026

T4 Bacteriophage and E. coli Interaction in the Murine Intestine: A Prototypical Model for Studying Host-Bacteriophage Dynamics In Vivo
Published on: January 26, 2024
Bacteriophage protein-protein interactions
Roman Häuser1, Sonja Blasche, Terje Dokland
1Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Karlsruhe, Germany.
This review compiles known protein interactions for bacteriophages, including intraviral and phage-host interactions. Understanding these phage interactomes is crucial for deciphering phage biology and lifestyles.
Area of Science:
- Virology
- Molecular Biology
- Systems Biology
Background:
- Bacteriophages are viruses that infect bacteria and play vital roles in microbial ecosystems.
- Well-studied bacteriophages like T7, λ, P22, ϕ29, and others have known protein interaction networks.
- Existing data on phage protein interactions, both within the phage and with the host, are fragmented.
Purpose of the Study:
- To consolidate and review published intraviral and phage-host protein interaction data for key bacteriophages.
- To analyze and compare interaction patterns across different phages and hosts.
- To identify knowledge gaps and propose strategies for completing phage interactome maps.
Main Methods:
- Literature review and data compilation of published protein interaction studies.
- Analysis of intraviral protein-protein interactions.
- Analysis of phage-host protein interactions.
Main Results:
- Compilation of interaction data for T7, λ, P22, P2/P4, and ϕ29 phages, detailing intra-phage and phage-host connections.
- Example: T7 phage has ~55 proteins with ~43 intra-phage interactions and ~15 phage-host interactions.
- Comparison reveals varying interaction patterns, potentially reflecting different phage lifestyles or study limitations.
Conclusions:
- Significant portions of phage interactomes remain uncharacterized due to technical limitations and study depth.
- Different phages, even those infecting the same host, exhibit distinct interaction strategies.
- Future research should focus on comprehensive interactome mapping to fully understand phage biology and interactions.
Related Concept Videos
DNA Bacteriophages
Lytic Cycle of Bacteriophages
Protein-protein Interfaces
Protein-Protein Interfaces
Viral Replication: Lytic Cycle
Lysogenic Cycle of Bacteriophages

