Rahul Sharma (Editor)

Geoglobus

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Covid-19
Domain  Archaea
Family  Archaeoglobaceae
Phylum  Euryarchaeota
Rank  Genus
Kingdom  Euryarchaeota
Scientific name  Geoglobus
Higher classification  Archaeoglobaceae
Order  Archaeoglobales
Geoglobus httpsmicrobewikikenyoneduimagesthumbbb3G
Similar  Ferroglobus, Archaeans, Archaeoglobi, Euryarchaeota, Archaeoglobus

Geoglobus is a hyperthermophilic member of the Archaeoglobaceae within the Euryarchaeota. It consists of two species, the first, G. ahangari, isolated from the Guaymas Basin hydrothermal system located deep within the Gulf of California. As a hyperthermophile, it grows best at a temperature of 88 °C and cannot grow at temperatures below 65 °C or above 90 °C. It possess an S-layer cell wall and a single flagellum. G. ahangari is an anaerobe, using poorly soluble ferric iron (Fe3+) as a terminal electron acceptor. It can grow either autotrophically using hydrogen gas (H2) or heterotrophically using a large number of organic compounds, including several types of fatty acids, as energy sources. G. ahangari was the first archaeon isolated capable of using hydrogen gas coupled to iron reduction as an energy source and the first anaerobe isolated capable of using long-chain fatty acids as an energy source.

A second species was described as G. acetivorans, which also uses iron as its terminal electron acceptor.

References

Geoglobus Wikipedia


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