Tags: Protein.
In molecular biology the protein domain Saf pilin N-terminal extension refers to a domain only found in bacteria more specifically in gram-negative bacteria. Pili need to be formed by bacteria as they are a method of adhering to the host organism which helps them infect the host cell. In other words they are the bacteria’s virulence factor. This particular protein domain helps the pili to form via a complex mechanism named the chaperone/usher pathway.
