Strain 121 (Geogemma barossii) is a single-celled microbe of the domain Archaea. First discovered 320 km (200 mi) off Puget Sound near a hydrothermal vent, it is a hyperthermophile, able to reproduce at 121 °C (250 °F), hence its name. It was (at the time of its discovery) the only known form of life that could tolerate such high temperatures. A temperature of 130 °C (266 °F) is biostatic for Strain 121, meaning that although growth is halted, the archaeon remains viable, and can resume reproducing once it has been transferred to a cooler medium. The ability to grow at 121 °C (250 °F) is significant because medical equipment is exposed to this temperature for sterilization in an autoclave. Prior to the 2003 discovery of Strain 121, a fifteen-minute exposure to autoclave temperatures was believed to kill all living organisms. However, Strain 121 is not infectious in humans, because it cannot grow at temperatures near 37 °C (99 °F). Strain 121 metabolizes by reducing iron oxide.
The maximum growth temperature of strain 121 is 8 °C higher than the previous record holder, Pyrolobus fumarii (Tmax=113 °C). However, it appears highly improbable that strain 121 marks the upper limit of viable growth temperature. It may very well be the case that the true upper limit lies somewhere in the vicinity of 140 to 150 °C, the temperature range where molecular repair and resynthesis becomes unsustainable.
Strain121 (Geogemma barossii) is a single-celled microbe of the domain Archaea. First discovered 320 km (200 mi) off Puget Sound near a hydrothermal vent...
heat-tolerant hyperthermophile is Strain121, which has been able to double its population during 24 hours in an autoclave at 121 °C (hence its name). The current...
Academic Press. ISBN 978-1-908230-04-1. Strain121, a hyperthermophilic archaea, has been shown to reproduce at 121 °C (250 °F), and survive at 130 °C (266 °F)...
hyperthermophile organisms, the temperature limit is at about 120 °C (Strain121 can reproduce at 121 °C), which limits the possible depth to 4-4.5 km below the...
not aromatic, however, because various types of ring strain destabilize an all-planar geometry.: 121–122 Although not aromatic itself, [10]annulene can...
while dozens of different strains fitting this description exist, the strain designated '168' is the most widely used. Strain 168 is a tryptophan auxotroph...
commonly found in the lower intestine of warm-blooded organisms. Most E. coli strains are harmless, but some serotypes such as EPEC, and ETEC are pathogenic...
(1346–1353). Ancient and modern Yersinia pestis strains are closely related to the ancestor of the Justinian plague strain that has been found in the Tian Shan,...
"Anthony Davis exits early from Lakers' Game 4 loss to Suns with groin strain". The Washington Post. ISSN 0190-8286. Archived from the original on October...
after Park takes credit for the complaint against Melendez, which causes a strain in Melendez and Claire's friendship; after being confronted about his behavior...
not typically mate with other hermaphrodites. At 20 °C, the laboratory strain of C. elegans (N2) has an average lifespan around 2–3 weeks and a generation...
able to survive over the winter. The southern strain of Aphalara itadori is from Kyushu and is the strain released in the UK. Its home range is the Kumamoto...
tensile test and recording the engineering stress versus strain. The highest point of the stress–strain curve is the ultimate tensile strength and has units...
moved past its range of motion, the excess stress puts a strain on the ligaments. If the strain is great enough to the ligaments past the yield point, then...
is similar to other types of animal flu in that it is caused by a virus strain that has adapted to a specific host. The type with the greatest risk is...
the church fund, much to Nels's dumbfounding. However, this final match strains elderly Milo's heart, and he dies after the match concludes with his victory...
known as four distinct groups, C. botulinum groups I–IV. Along with some strains of Clostridium butyricum and Clostridium baratii, these bacteria all produce...
second date with Sam at a chicken shop. Sophie and Nathan both feel the strain as they confide in each other about missing their other halves, whilst Abbie...
the first time in 1937. The specimen came to be known as the Beaudette strain. In the late 1940s, two more animal coronaviruses, JHM that causes brain...
to herself, but he will not leave his wife, Jagtar, because of financial strain and losing custody of his children. Desperate, Gurpreet hatches a plan with...
since Jamal Crawford in 2004. On February 5, Butler suffered a left knee strain in a game against the Denver Nuggets and missed nearly four weeks. He was...
known as the Bell-Murray strain. These dogs were of the "steppe" or “desert” type and were less heavily coated. The second strain was a group of dogs from...
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