
Organization of the accessory gene regulator (agr) loci in clostridia and S. aureus. Similar genes are shown in the same color. Significant functions are: (blue) autoinducer maturation protein (AgrB); (red) autoinducer peptide (AgrD); (green) two-component sensor kinase (AgrC); (pink) two-component response regulator (AgrA); (light blue and orange) membrane proteins; (purple) signal transduction proteins with GGDEF and HD domains; (yellow) two-component sensor kinases.











