Human serum induces streptococcal c5a peptidase expression.

Streptococcus agalactiae is a major pathogen in humans and animals. Virulence factors are often associated with mobile genetic elements, and their expression can be modulated by host factors. S.

Transport of multidrug resistance substrates by the Streptococcus agalactiae hemolysin transporter.

Streptococcus agalactiae (group B streptococcus [GBS]) causes neonatal sepsis, pneumonia, and meningitis, as well as infections of the bovine udder. The S. agalactiae hemolysin is regarded as an important virulence factor, and hemolysin expression is dependent on the cyl gene cluster.