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Virus deploys a ‘loose cannon’ enzyme to overpower bacterial defences

Research Phage Defense Evasion

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TL;DR - The bacteriophage kinase T7K phosphorylates nearly all bacterial proteins, with a preference for DNA-binding proteins. This broad activity helps the virus disable host defence systems that target nucleic acids.

  • T7K acts as an unusually indiscriminate kinase across the bacterial proteome.
  • Its bias toward DNA-binding proteins gives the enzyme functional specificity despite its broad activity.
  • Phosphorylating these proteins enables the virus to counter bacterial nucleic-acid defence mechanisms.
  • The finding reveals a viral strategy that uses widespread host-protein modification to overcome immunity.

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Virus deploys a ‘loose cannon’ enzyme to overpower bacterial defences

Nature 2026-08-19 doi:10.1038/d41586-026-02537-x
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Providers: Hugging Face · N/A OpenAlex · Citations 0 Publisher · N/A Semantic Scholar · N/A X · N/A Fetched 2026-09-19 14:25:48.436601 UTC

TL;DR - The bacteriophage kinase T7K phosphorylates nearly all bacterial proteins, with a preference for DNA-binding proteins. This broad activity helps the virus disable host defence systems that target nucleic acids.

  • T7K acts as an unusually indiscriminate kinase across the bacterial proteome.
  • Its bias toward DNA-binding proteins gives the enzyme functional specificity despite its broad activity.
  • Phosphorylating these proteins enables the virus to counter bacterial nucleic-acid defence mechanisms.
  • The finding reveals a viral strategy that uses widespread host-protein modification to overcome immunity.
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