Bacteriophages deliver their genome into the host cell through large proteinaceous assemblies called portal proteins. The first high-resolution structure of a portal protein from the Podovirae family reveals a ~1.1-MDa assembly formed by 24 proteins and a second structure uncovers an unexpected barrel-shaped domain that is essential for infectivity.
- Adam S Olia
- Peter E Prevelige Jr
- Gino Cingolani