The putative iron transport system SitABCD encoded on SPI1 is required for full virulence of Salmonella typhimurium.
Janakiraman A, Slauch JM. The putative iron transport system SitABCD encoded on SPI1 is required for full virulence of Salmonella typhimurium. Mol Microbiol. 2000 Mar; 35(5):1146-55.