Expression Dynamics of Arsenic Respiration and Detoxification in Shewanella sp. Strain ANA-3
نویسندگان
چکیده
منابع مشابه
Expression dynamics of arsenic respiration and detoxification in Shewanella sp. strain ANA-3.
Because arsenate [As(V)] reduction by bacteria can significantly enhance arsenic mobility in the environment, it is important to be able to predict when this activity will occur. Currently, two bacterial systems are known that specifically reduce As(V), namely, a respiratory system (encoded by the arr genes) and a detoxification system (encoded by the ars genes). Here we analyze the conditions ...
متن کاملCharacterization of the arsenate respiratory reductase from Shewanella sp. strain ANA-3.
Microbial arsenate respiration contributes to the mobilization of arsenic from the solid to the soluble phase in various locales worldwide. To begin to predict the extent to which As(V) respiration impacts arsenic geochemical cycling, we characterized the expression and activity of the Shewanella sp. strain ANA-3 arsenate respiratory reductase (ARR), the key enzyme involved in this metabolism. ...
متن کاملThe ars detoxification system is advantageous but not required for As(V) respiration by the genetically tractable Shewanella species strain ANA-3.
Arsenate [As(V); HAsO(4)(2-)] respiration by bacteria is poorly understood at the molecular level largely due to a paucity of genetically tractable organisms with this metabolic capability. We report here the isolation of a new As(V)-respiring strain (ANA-3) that is phylogenetically related to members of the genus Shewanella and that also provides a useful model system with which to explore the...
متن کاملExpression of Shewanella oneidensis MR - 1 [ FeFe ] - hydrogenase 2 genes in Anabaena sp . strain PCC 7120
10 H2 generated from renewable resources holds promise as an environmentally innocuous fuel that 11 releases only energy and water when consumed. In biotechnology, photoautotrophic oxygenic 12 diazotrophs could produce H2 from water and sunlight using the cells’ endogenous nitrogenases. 13 However, nitrogenases have low turnover numbers and require large amounts of ATP. [FeFe]14 hydrogenases fo...
متن کاملExpression of Shewanella oneidensis MR-1 [FeFe]-hydrogenase genes in Anabaena sp. strain PCC 7120.
H(2) generated from renewable resources holds promise as an environmentally innocuous fuel that releases only energy and water when consumed. In biotechnology, photoautotrophic oxygenic diazotrophs could produce H(2) from water and sunlight using the cells' endogenous nitrogenases. However, nitrogenases have low turnover numbers and require large amounts of ATP. [FeFe]-hydrogenases found in oth...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 2005
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.187.21.7390-7396.2005