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Higher order taxa

Archaea; Crenarchaeota; Thermoprotei; Desulfurococcales; Desulfurococcaceae


Acidilobus aceticus

Description and significance

Acidilobus (acid lobe) is an obligately anaerobic, hyperthermophilic, acidophilic archaeon that grows in the temperatures between 60-92°C (optimum = 85°C) and in the pH range of 2.0-6.0 (optimum at 3.8).

Genome structure

There are currently no genome project held for this archaeon. The G+C content of its DNA, however, is found to be 53.8%.

Cell structure and metabolism

The cells of Acidilobus are regular or irregular cocci with diameter of 1-2 &micor;m. They are non-motile and have a cell envelope consisting of one layer of subunits.


The strains of Acidilobus aceticus were isolated from the acidic hot springs of the Moutnovski volcano in Kamchatka, Russia. Similar to most other thermoacidophilic isolates, the habitat of the archaeon is terrestrial acidic hot springs.


Prokofeva, M. I., Miroshnichenko, M. L., Kostrikina, N. A., Chernyh, N. A., Kuznetsov, B. B., Tourova, T. P., and Bonch-Osmolovskaya. "Acidilobus aceticus gen. nov., sp. nov., a novel anaerobic thermoacidophilic archaeon from continental hot vents in Kamchatka." International Journal of Systematic and Evolutionary Microbiology (2000) Volume 50, p. 2001-2008.