Английская Википедия:Cupriavidus metallidurans

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Шаблон:Short description Шаблон:Taxobox

Cupriavidus metallidurans is a non-spore-forming, Gram-negative bacterium which is adapted to survive several forms of heavy metal stress.[1][2][3]

As a model and industrial system

Cupriavidus metallidurans is a bacterial species that belongs to the same family as Ralstonia solanacearum, a plant pathogen. [4]

This species is of ecological and industrial importance, as its relatives dominate mesophilic environments contaminated with heavy metals.[5][6] C. metallidurans is used in the industrial sector for both heavy metal remediation and sensing.[2]

This aerobic chemolithoautotroph is capable of growing in a mineral salts environment with H2, O2, and CO2 without an organic carbon source.[7] Its energy-providing subsystem is composed of only the hydrogenase, the respiratory chain, and the F1F0-ATPase, which remain separate from the anabolic subsystems.

C. metallidurans can also degrade xenobiotics in conditions with high levels of heavy metals.[8]

Strain CH34 has adapted to these harsh conditions through multiple heavy-metal resistance systems, encoded by the two indigenous megaplasmids, pMOL28 and pMOL30, on its chromosome(s).[1][2][9]

Ecology

Файл:CSIRO ScienceImage 3908 Coloured scanning electron image of bacterioform gold on a gold grain from the Hit or Miss Mine in northern Queensland.jpg
A scanning electron microscope image of a gold nugget, revealing bacterioform (bacteria-shaped) structures

C. metallidurans plays a vital role, together with Delftia acidovorans, in the formation of gold nuggets. It precipitates metallic gold from a solution of gold(III) chloride, a compound highly toxic to most other microorganisms.[10][11][12]

As a pathogen

A case of a 74 year old man infected with Cupriavidus metallidurans has been documented,[13] possibly raising concerns about the safety of using the bacteria for industrial purposes.

References

Шаблон:Reflist

External links

Шаблон:Taxonbar