Host–phage defense

Molecular strategies and dynamics of microbial defense.

3D animation: phage infection and abortive infection (Abi) — adsorption, genome injection, nucleic-acid-sensing defence, phage replication, Abi activation and blocking the spread of infection (labels in Japanese).

Bacteria and archaea are constantly attacked by viruses (phages) and have evolved a wide range of immune systems in response. Many of these systems must stay silent in healthy cells yet act quickly once an infection begins. Using a defense system that acts through intracellular signalling as a model, I investigate how this decision is made at the molecular level.

When does a defense system switch on?

I combine biochemistry with quantitative measurements to understand how the activity of defense systems is controlled. Results will be added here as they are published.