Identification of a gene cluster for the formation of extracellular polysaccharide precursors in the chemolithoautotroph Acidithiobacillus ferrooxidans

Article Abstract:

A cluster of five genes, proposed to be involved in the formation of extracellular polysaccharide (EPS) precursors were identified in the acidophilic autotroph Acidithiobacillus ferrooxidans. This study might provide an initial model for the metabolic pathways involved in biofilm formation in Acidithiobacillus ferrooxidans and help in understanding the role of biofilms in mineral leaching and the formation of acid mine drainage.

Microbial mats, Microbial polysaccharides, Genetic research

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Regulation of a novel Acidithiobacillus caldus gene cluster involved in metabolism of reduced inorganic sulfur compounds

Article Abstract:

The regulation of a new cluster containing the gene encoding tetrathionate hydrolase (tetH), a key enzyme in the reduced inorganic sulfur compounds (RISCs) metabolism, is described. A pyrrolo-quinone binding domain in TetH is predicted by bioinformatic analysis and the presence of an o-quinone moiety is verified, thereby suggesting a mechanism for tetrathionate oxidation.

Usage, Sulfur bacteria, Genetic code, Sulphur bacteria

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Second acyl homoserine lactone production system in the extreme acidophile acidithiobacillus ferrooxidans

Article Abstract:

An effort is made to understand quorum sensing in Acidithiobacillus ferrooxidants and evidence for the role of Act in the tranformation of acyl homoserine lactones in Acidithiobacillus ferrooxidants is provided.

Analysis, Physiological aspects, Gram-negative bacteria, Polymerase chain reaction, Genetic transcription, Transcription (Genetics)

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