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Identification of a gene encoding a tetrathionate hydrolase in Acidithiobacillus ferrooxidans.
An open reading frame (ORF) encoding the N-terminal amino acid sequence of the purified 4THase was identified by a BLAST search using the database for the A. ferrooxidans ATCC 23270 genome, indicating that the ORF encoded the 4TH enzyme. Expand
Purification and Characterization of Sulfide:Quinone Oxidoreductase from an Acidophilic Iron-Oxidizing Bacterium, Acidithiobacillus ferrooxidans
Western blotting analysis using the antibody revealed an increased level of SQR synthesis in sulfur-grown A. ferrooxidans NASF-1 cells, implying the involvement of SQSQR in elemental sulfur oxidation in sulfide:quinone oxidoreductase in sulfur, grown on sulfur medium. Expand
Ferrous Iron-Dependent Volatilization of Mercury by the Plasma Membrane of Thiobacillus ferrooxidans
ABSTRACT Of 100 strains of iron-oxidizing bacteria isolated,Thiobacillus ferrooxidans SUG 2-2 was the most resistant to mercury toxicity and could grow in an Fe2+ medium (pH 2.5) supplemented with 6Expand
Tetrathionate-Forming Thiosulfate Dehydrogenase from the Acidophilic, Chemolithoautotrophic Bacterium Acidithiobacillus ferrooxidans
The open reading frame of AFE_0042 was identified by BLAST by using the N-terminal amino acid sequence of the protein, and the gene was found within a region that was previously noted for sulfur metabolism-related gene clustering. Expand
Degradation of Triphenyltin by a Fluorescent Pseudomonad
The results suggest that the extracellular low-molecular-mass substance that is universally produced by the fluorescent pseudomonad could function as a potent catalyst to cometabolite TPT in the environment. Expand
Mechanism of Growth Inhibition by Tungsten in Acidithiobacillus ferrooxidans
From the results, the generation of energy needed for cell growth from the oxidation of Fe2+ is stopped and the growth inhibition by Na2WO4 observed in A. ferrooxidans is explained as follows: tungsten binds to cytochrome c oxidase in plasma membranes and inhibits cy tochrome c oxidationase activity, and as a results,The generation ofEnergy needed forCell growth is stopped. Expand
A new iron oxidase from a moderately thermophilic iron oxidizing bacterium strain TI-1.
Purified enzyme from strain TI-1 is a new iron oxidase in which electrons of Fe(2+) were transferred to haem a and then to the molecular oxygen, and the activity was strongly inhibited by cyanide and azide. Expand
Volatilization of Mercury by an Iron Oxidation Enzyme System in a Highly Mercury-resistant Acidithiobacillus ferrooxidans Strain MON-1
Results indicate that among components of the iron oxidation enzyme system, especially cytochrome c oxidase activity, increased by the acquisition of further mercury resistance in strain MON-1. Expand
Volatilization and recovery of mercury from mercury wastewater produced in the course of laboratory work using Acidithiobacillus ferrooxidans SUG 2-2 cells.
To develop a microbial technique to volatilize and recover mercury from acidic and organic compound-containing mercury wastewater, which is usually produced in the course of everyday laboratory work in Okayama University, the effects of organic and inorganic chemicals on the mercury volatILization activity of A. ferrooxidans cells were studied. Expand
Involvement of Sulfide:Quinone Oxidoreductase in Sulfur Oxidation of an Acidophilic Iron-Oxidizing Bacterium, Acidithiobacillus ferrooxidans NASF-1
The effects of cyanide, azide, and 2-n-Heptyl-4-hydroxy-quinoline-N-oxide (HQNO) on the oxidation of ferrous ion or elemental sulfur with Acidithiobacillus ferrooxidans NASF-1 cells grown in iron- orExpand