Supriya Ghosh (Editor)

Cupriavidus metallidurans

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Domain
  
Bacteria

Order
  
Burkholderiales

Genus
  
Cupriavidus

Higher classification
  
Cupriavidus

Phylum
  
Proteobacteria

Family
  
Burkholderiaceae

Scientific name
  
Cupriavidus metallidurans

Rank
  
Species

Cupriavidus metallidurans Bacterium Cupriavidus Metallidurans Can Turn Toxins into Gold

Similar
  
Cupriavidus, Bacteria, Ralstonia, Delftia acidovorans, Cupriavidus necator

Cupriavidus metallidurans


Cupriavidus metallidurans strain CH34, (renamed from Ralstonia metallidurans and previously known as Ralstonia eutropha and Alcaligenes eutrophus) is a nonspore-forming, Gram-negative bacterium which is adapted to survive several forms of heavy metal stress. Therefore, it is an ideal subject to study heavy metal disturbance of cellular processes. This bacterium shows a unique combination of advantages not present in this form in other bacteria.

Cupriavidus metallidurans Bacterium Cupriavidus Metallidurans Can Turn Toxins into Gold

  • Its genome has been fully sequenced (preliminary, unnotated sequence data were obtained from the DOE Joint Genome Institute)
  • It is not pathogenic, therefore, models of the cell can also be tested in artificial environments similar to its natural habitats.
  • It is related to the plant pathogen Ralstonia solanacearum.
  • It is of ecological importance since related bacteria are predominant in mesophilic heavy metal-contaminated environments.
  • It is of industrial importance and used for heavy metal remediation and sensing.
  • It is an aerobic chemolithoautotroph, facultatively able to grow in a mineral salts medium in the presence of H2, O2, and CO2 without an organic carbon source. The energy-providing subsystem of the cell under these conditions is composed only of the hydrogenase, the respiratory chain, and the F1F0-ATPase. This keeps this subsystem simple and clearly separated from the anabolic subsystems that starts with the Calvin cycle for CO2-fixation.
  • It is able to degrade xenobiotics even in the presence of high heavy metal concentrations.
  • Finally, strain CH34 is adapted to the outlined harsh conditions by a multitude of heavy-metal resistance systems that are encoded by the two indigenous megaplasmids pMOL28 and pMOL30 on the bacterial chromosome(s).

    • Cupriavidus metallidurans httpsmicrobewikikenyoneduimages55fCupriav

    Also it plays a vital role, together with the species Delftia acidovorans, in the formation of gold nuggets, by precipitating metallic gold from a solution of gold(III) chloride, a compound highly toxic to most other microorganisms.

    Cupriavidus metallidurans Cupriavidus metallidurans MicrobeWiki
    Cupriavidus metallidurans Image Gallery Jewellery amp Object

    Cupriavidus metallidurans Enhanced Selenate Accumulation in Cupriavidus metallidurans CH34

    References

    Cupriavidus metallidurans Wikipedia
    (Text) CC BY-SA


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