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A hyperthermophile is an organism that thrives in extremely hot environments—from 60 °C (140 °F) upwards. An optimal temperature for the existence of hyperthermophiles is often above 80 °C (176 °F). [1] Hyperthermophiles are often within the domain Archaea, although some bacteria are also able to
P. fumarii is a hyperthermophile, indicating that this organism grows best at extremely high temperatures (70–125 °C). P. fumarii grows best at 106 °C. Due to the extremely high temperatures this archaea is subjected to, this organism must have extremely stable biomolecules to survive.
Pyrococcus furiosus is a strictly anaerobic, heterotrophic, sulfur-reducing archaea originally isolated from heated sediments in Vulcano, Italy by Fiala and Stetter. It is noted for its rapid doubling time of 37 minutes under optimal conditions, meaning that every 37 minutes the number of individual organisms is multiplied by two, yielding an exponential growth curve.
Pyrococcus abyssi is a hyperthermophilic archaeon isolated from a deep-sea hydrothermal vent in the North Fiji Basin at 2,000 metres (6,600 ft). It is anaerobic, sulfur-metabolizing, gram-negative, coccus-shaped and highly motile.
Pyrolobus fumarii (Latin for "fire lobe of the chimney" [1]) is a species of archaea known for living and reproducing at extremely high temperatures that kill most organisms. [1] [2] P. fumarii is known as a hyperthermophile obligately chemolithoautotroph. In the simplest terms, this archaea grows best in warm temperatures ranging from 80 °C ...
Many hyperthermophilic Archaea require elemental sulfur for growth. Some are anaerobes that use the sulfur instead of oxygen as an electron acceptor during cellular respiration (anaerobic) . Some are lithotrophs that oxidize sulphur to create sulfuric acid as an energy source, thus requiring the microorganism to be adapted to very low pH (i.e ...
Archaea (/ ɑːr ˈ k iː ə / ⓘ ar-KEE-ə) is a domain of organisms.Traditionally, Archaea only included its prokaryotic members, but since this has been found to be paraphyletic, as eukaryotes are now known to have evolved from archaea.
Metabolically, Thermococcus spp. have developed a different form of glycolysis from eukaryotes and prokaryotes. [26] [5] One example of a metabolic pathway for these organisms is the metabolism of peptides, [26] which occurs in three steps: first, hydrolysis of the peptides to amino acids is catalyzed by peptidases, [5] then the conversion of the amino acids to keto acids is catalyzed by ...