Tropical and subtropical environmental organism which produces the bacteriocidal pigment violacein. Chromobacterium violaceum ATCC 12472

Chromobacterium violaceum ATCC 12472. Chromobacterium violaceum ATCC 12472 was isolated from freshwater in Malaya. This organism has a violacein operon for pigment production which is under quorum-sensing control, as are a number of important metabolic functions. This organism also has a chromosomally-encoded type III secretion system that is similar to systems from Salmonella and Yersinia, and may be important for the pathogenicity occasionally observed with this organism. The genome also contains genes for type I and type II secretion systems, various hemolysin-like sequences, and genes for pili production.