Chromobacterium violaceum: A Review of Pharmacological and Industiral Perspectives
Critical reviews in microbiology
FOREWORD This article presents the historical and actual importance of the Chromobacterium violaceum and focuses on the biotechnological and pharmacological importance of their metabolites. Although many groups in the world are working with this bacterium, very few reviews have been written in the last 40 years. 39,45, 69 ABSTRACT: Violet-pigmented bacteria, which have been described since the end of the 19th century, are occasionally the causative agent of septicemia and sometimes cause fatal
... etimes cause fatal infection in human and animals. Bacteria, producing violet colonies due to the production of a nondiffusible pigment violacein, were classified as a redefined genus Chromobacterium. Chromobacterium violaceum is Gram-negative, and saprophyte from soil and water is normally considered nonpathogenic to human, but is an opportunistic pathogen of extreme virulence for human and animals. The biosynthesis and biological activities of violacein and the diverse effects of this pigment have been studied. Besides violacein, C. violaceum produces other antibiotics, such as aerocyanidin and aerocavin, which exhibit in vitro activity against both Gram-negative and Gram-positive bacteria. 3,6-Dihydroxyindoxazene and Y-TO678h exhibit a selective activity against Gram-negative bacteria. Arphamenine A and B, and FR901228, that enhanced immunoresponse, and potentiators of β-lactam antibiotics and chelators such as ferrioxamine exhibit important clinical potential applications. Lipopolysaccharides and polyhydroxyesters together with several enzymes appear as important metabolites with biotechnological applications. Many of these metabolites were already studied at the genome level.