Cold-adapted arsenite oxidase from a psychrotolerant Polaromonas species

Cold-adapted arsenite oxidase from a psychrotolerant Polaromonas species.

Polaromonas sp. str. GM1 is an aerobic, psychrotolerant, heterotrophic member of the Betaproteobacteria and is the only isolate capable of oxidising arsenite at temperatures below 10 °C. Sequencing of the aio gene cluster in GM1 revealed the presence of the aioB and aioA genes, which encode the arsenite oxidase but the regulatory genes typically found upstream of aioB in other members of the Pr...

Arsenite Oxidase aox Genes from a Metal-Resistant -Proteobacterium

Draft Genome Sequence of Polaromonas glacialis Strain R3-9, a Psychrotolerant Bacterium Isolated from Arctic Glacial Foreland

Here we report the draft genome sequence of the psychrotolerant Polaromonas glacialis strain R3-9, isolated from Midtre Lovénbreen glacial foreland near Ny-Alesund, Svalbard Archipelago, Norway.

Cold-Adapted Yeasts from Patagonia Argentina

The Patagonian Andes possess a great variety of glaciers, large temperate ice masses, and glacially formed water bodies. Most of these environments are included in protected areas characterized by low anthropogenic impact and minimal atmospheric pollution. Studies on occurrence of psychrotolerant (cold-adapted) and psychrophilic yeasts in these natural environments have allowed the characteriza...

Protein film voltammetry of arsenite oxidase from the chemolithoautotrophic arsenite-oxidizing bacterium NT-26.

The chemolithoautotrophic bacterium NT-26 (isolated from a gold mine in the Northern Territory of Australia) is unusual in that it acquires energy by oxidizing arsenite to arsenate while most other arsenic-oxidizing organisms perform this reaction as part of a detoxification mechanism against the potentially harmful arsenite [present as As(OH)(3) at neutral pH]. The enzyme that performs this re...