Enzymes produced by Metallosphaera sedula catalyze the reduction of metal ions from metal sulfates, sulfites, and sulfides to produce the elemental form of the metals.

Edit Hook

Metallosphaera sedula is a strain of single-celled microorganisms that thrive even under conditions of extreme heat and acidity. As part of their metabolism, these "extremophiles" produce enzymes that alter the state of metal-sulfur compounds, such as iron sulfide, present in their environment. The result is the elemental form of the metal – the same form that is useful for human applications.

Edit Summary


"Metallosphaera sedula strain DSM 5348 is an aerobic thermoacidophile...that was first isolated from a thermal pond...It can grow at temperatures ranging from 50 to 79°C with optimal growth at 74°C and pH 2. Metallosphaera sedula is capable of oxidizing sulfidic ores, such as pyrite, making it an attractive organism for use in bioleaching of metals." (Galperin 2007:1871).

"M. sedula genome contains genes related to autotrophic carbon fixation, metal tolerance, and adhesion...and a putative tetrathionate hydrolase, implicated in sulfur oxidation...facilitating release of valuable metals bound in metal sulfides." (Auernik et al. 2008:682).

"The fox gene cluster, two putative versions of Rus, and TetH appear to be factors distinguishing thermoacidophilic bioleachers from nonbioleachers." (Auernik et al. 2008:690).

"Biomining exploits acidophilic microorganisms to recover valuable metals (i.e., Cu and Au) from ores...in biohydrometallurgical processes" (Auernik et al. 2008:682).

Journal article
The Genome Sequence of the Metal-Mobilizing, Extremely Thermoacidophilic Archaeon Metallosphaera sedula Provides Insights into Bioleaching-Associated MetabolismApplied and Environmental MicrobiologyDecember 15, 2007
K. S. Auernik, Y. Maezato, P. H. Blum, R. M. Kelly

Journal article
Genomics against flatulenceEnviron MicrobiolJuly 12, 2007
Michael Y. Galperin

Edit References

Living System/s

Metallosphaera sedulaSpecies

Edit Living Systems