Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
Thermotogae are a phylum of hyperthermophilic bacteria characterized by their unique toga-like outer membrane. These bacteria are known for thriving in extremely hot environments such as hydrothermal vents.
5 Must Know Facts For Your Next Test
Thermotogae exhibit a distinctive 'toga' structure, which is an outer sheath-like membrane that surrounds the cell.
They are hyperthermophiles, meaning they thrive at extremely high temperatures, often above 80°C.
Members of the Thermotogae phylum are typically anaerobic and can metabolize carbohydrates to produce hydrogen gas.
Thermotoga maritima is one of the best-studied species within this phylum and was among the first genomes to be fully sequenced.
These bacteria have been found in diverse extreme environments, including marine hydrothermal vents and terrestrial hot springs.
Review Questions
Related terms
Hyperthermophile: Organisms that thrive at extremely high temperatures.
Anaerobic Bacteria: Bacteria that do not require oxygen for growth and may even die in its presence.
Hydrothermal Vent: A fissure on the seafloor that emits geothermally heated water.