Pili are crucial virulence factors in many Gram-negative pathogens; these surface structures enable bacteria to interact with, and attach to structures in, their environment and can also facilitate horizontal gene transfer. In this Review, Waksmanet al. examine recent advances in our structural understanding of various pilus systems in Gram-negative bacteria and discuss their functional implications.
- Manuela K. Hospenthal
- Tiago R. D. Costa
- Gabriel Waksman