Top Qs
Timeline
Chat
Perspective

Methanogenium frigidum

Species of archaeon From Wikipedia, the free encyclopedia

Remove ads

Methanogenium frigidum is a psychrophilic, H2-using methanogen from Ace Lake, Antarctica.[1]

Quick Facts Scientific classification, Binomial name ...
Remove ads

Description and metabolism

Cells are psychrophilic, irregular, slightly halophilic and non-motile coccoids (diameter 1.2 to 2.5 μm). They require salt to grow. They prefer low temperatures: their optimal temperature is 15 °C, and they cannot grow at 18 °C–20 °C. They reduce carbon dioxide with hydrogen to produce methane, but it may be possible that they use other substrates as well. One experiment showed that these cells grow best in the presence of yeast extract.[2]

Remove ads

Genome

The genome of this species differs from those of archaea that prefer higher temperatures. It contains more polar amino acids, particularly Gln and Thr, and fewer non-polar ones, particularly Leu. Unlike hyperthermophiles, in psychrophiles, the GC content is the most important factor to the stability of the tRNA.[3][2]

References

Further reading

Loading content...
Loading content...
Loading related searches...

Wikiwand - on

Seamless Wikipedia browsing. On steroids.

Remove ads