''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
An anaerobic organism or anaerobe is any organism that does not require molecular oxygen for growth. It may react negatively or even die if free oxygen is present. In contrast, an aerobic organism (aerobe) is an organism that requires an oxygenate ...
, using poorly soluble
ferric iron (Fe
3+) as a
terminal electron acceptor. It can grow either
autotrophically using
hydrogen gas (H
2) 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.
See also
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List of Archaea genera
This article lists the genera of the Archaea. The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI).
Phylogeny
National Center for ...
References
Further reading
Scientific journals
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Scientific books
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Scientific databases
External links
Archaea genera
Marine fauna of the Gulf of California
Euryarchaeota
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