Cupriavidus metallidurans

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Cadmium is a highly toxic heavy metal for biological systems. Cupriavidus metallidurans CH34 is a model strain to study heavy metal resistance and bioremediation as it is able to deal with high heavy metal concentrations. The aim of this study was to characterize the response of C. Inhibition of the initiation of biofilm formation and EPS production by C. Planktonic and biofilm cells showed similar tolerance to cadmium. During exposure to cadmium an acute decrease of c-di-GMP levels in planktonic and biofilm cells was observed. After exposure to cadmium, the cadA gene involved in cadmium resistance was equally upregulated in both lifestyles.

Cupriavidus metallidurans

Federal government websites often end in. The site is secure. Recent discovery on the potential use of a bacterium has revealed that it can yield carat gold in one week. Scientists from Michigan State University, USA, Kazem Kashefi, assistant professor of microbiology and Adam Brown, associate professor of electronic art and intermedia, found that a bacterium, Cupriavidus metallidurans previously known as Ralstonia metallidurans [ 1 ] that belongs to beta class of proteobacteria can grow on a substantial concentration of toxic gold chloride also known as liquid gold. The bacterium with such potential was first isolated in from the sludge of a metal processing factory located in Belgium [ 3 ]. Its ability to detoxify gold complexes by transforming them into metallic gold was discovered in [ 4 ]. When discovered, the bacterium was initially found to be resistant to cadmium but subsequent studies identified that this strain is multi-metal resistant and has two plasmids pMOL28 and pMOL30 which harbor multiple loci for metal resistance [ 5 ]. Such unique ability of this extremophile to metabolize toxic substances might also provide an insight into understanding the origin of life. This microbial magician, C. The art work consists of a portable lab which consists of a glass bioreactor containing the bacteria. While Kashefi calls this as microbial alchemy, Brown calls it as neo-alchemy which is a cross between modern microbiology and alchemy. This artwork received an honorable, mentioned in the world renowned cyber art competition, Prix Ars Electronica , held in Austria [ 7 ]. Producing pure gold from bacterium seems to be a boon at a time when the price of gold has reached an all time high. But, does this mean that the scientists have got the answer to the international debt crises? Although this bacterium can produce the carat pure gold, but it has been said that it will be cost prohibitive to carry out this experiment at a larger scale.

Kulasekara, H. Matamouros, S.

Not distinguished from Ralstonia eutropha until Cupriavidus metallidurans is a non-spore-forming, Gram-negative bacterium which is adapted to survive several forms of heavy metal stress. Cupriavidus metallidurans is a bacterial species that belongs to the same family as Ralstonia solanacearum , a plant pathogen. This species is of ecological and industrial importance, as its relatives dominate mesophilic environments contaminated with heavy metals. This aerobic chemolithoautotroph is capable of growing in a mineral salts environment with H 2 , O 2 , and CO 2 without an organic carbon source. 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.

Federal government websites often end in. The site is secure. Recent discovery on the potential use of a bacterium has revealed that it can yield carat gold in one week. Scientists from Michigan State University, USA, Kazem Kashefi, assistant professor of microbiology and Adam Brown, associate professor of electronic art and intermedia, found that a bacterium, Cupriavidus metallidurans previously known as Ralstonia metallidurans [ 1 ] that belongs to beta class of proteobacteria can grow on a substantial concentration of toxic gold chloride also known as liquid gold. The bacterium with such potential was first isolated in from the sludge of a metal processing factory located in Belgium [ 3 ].

Cupriavidus metallidurans

Federal government websites often end in. The site is secure. Cupriavidus metallidurans has been mostly studied because of its resistance to numerous heavy metals and is increasingly being recovered from other environments not typified by metal contamination. They host a large and diverse mobile gene pool, next to their native megaplasmids. Here, we used comparative genomics and global metabolic comparison to assess the impact of the mobilome on growth capabilities, nutrient utilization, and sensitivity to chemicals of type strain CH34 and three isolates NA1, NA4 and H The mobilome was expanded as prophages were predicted in NA4 and H, and a genomic island putatively involved in abietane diterpenoids metabolism was identified in H No correlation between the mobilome and isolation environment was found. In addition, our comparison indicated that the metal resistance determinants and properties are conserved among these strains and thus maintained in these environments. Furthermore, all strains were highly resistant to a wide variety of chemicals, much broader than metals. Only minor differences were observed in the phenomes measured by phenotype microarrays , despite the large difference in mobilomes and the variable shared by two or three strains and strain-specific genomes.

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D-gluconate as carbon source GNT. Corresponding author. After 48 h, the blood agar Oxoid, Basingstoke, United Kingdom and chocolate agar Oxoid plates revealed greyish small colonies with only a few lactose-negative colonies on the MacConkey plates Oxoid. It precipitates metallic gold from a solution of gold III chloride , a compound highly toxic to most other microorganisms. Gerits; P. Inhibition of the initiation of biofilm formation and EPS production by C. The site of the left subclavian central catheter was normal. D-glucose as carbon source GLU. Vertical arrows stand for upregulation green and downregulation red of molecules. Ultrasensitivity and heavy-metal selectivity of the allosterically modulated MerR transcription complex.

Eubacteria kingdom ; Bacteria domain ; Proteobacteria phylum ; Betaproteobacteria class ; Burkholderiales order ; Burkholderiaceae family ; Cupriavidus genus.

Bacteria incubated in absence of cadmium were used as control. Hidden categories: Articles with short description Short description matches Wikidata Articles with 'species' microformats. The bar represents 1 cm. Jalview Version 2- a multiple sequence alignment editor and analysis workbench. B Phosphodiesterases. Altschul, S. L-cystylnaphthylamide Cystine arylamidase. N-benzoyl-DL-argininenaphthylamide Trypsin. Some c-di-GMP pathway genes identified are associated with biofilm formation. Biometals 24, —