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Tag: "archaea" at biology news

The secret to longevity in tubeworms

...m needs is created by a consortium of bacteria and archaea that live in the deep sea cold sediments surrounding the seep where the worm lives. These chemoautotrophs use energy from hydrocarbons to reduce sulfate to sulfide, which L. luymesi absorbs through its unique "roots," extensions of its body that it t...

New book expands biological classifications to account for 'alien' life

...em the highest levels are three domains ?bacteria, archaea and eukarya, the last of which includes all animals. Ward's plan places those three domains within a larger dominion, which he calls "terroan" to signify Earth origins. Another dominion he calls "ribosa" because it is based on ribonucleic acid, or RN...

Life in deadly conditions

...ntrast to other salt-tolerant organisms, halophile archaea have an extremely high salt concentration inside o...acid building blocks in the proteomes of halophile archaea make it possible for the proteins to remain stabile, even in high salt concentrations. To survive am...

Novel protein complex enables survival in hostile environment

... of the bacteria and energy transducers of certain archaea or if this enzyme originated from a gene fusion ev...rly the loss of certain key genes gave rise to the archaea that reduces sulfate, but do not make methane. "But it is equally possible that the sulfite reductio...

A salty tale: New bacterial genome sequenced from ancient salterns

...ca, Spain. Although extreme-loving microbes called archaea were known to eke out life in the ponds, scientist... biochemical adaptation: it's the same one used by archaea also living in the salterns. That wasn't the only similarity. Scientists also found two types of rh...

Ammonia-loving archaea win landslide majority

...ely measured the quantities of active bacteria and archaea in the complex mixtures of soil organisms. The int... gene was subsequently found in a marine strain of archaea that uses ammonia as its sole source of energy. Researchers examined soil samples from 12 pristine a...

Molecular DNA switch found to be the same for all life

...s at the heart of the DNA replication initiator in archaea organisms, these new findings indicate that DNA replication is an ancient event that evolved millions of years ago, prior to when Archaea, Bacteria and Eukarya split into separate domains of life. "The ability of a cell to replicate its DNA in a ...

Gut microbes' partnership helps body extract energy from food, store it as fat

...70s and mistaken for a primitive form of bacteria, archaea initially became famous because of their ability t...ve, such as hot springs. Scientists first isolated archaea from the human intestine in 1982, and have recently recognized M. smithii as the most common archaeo...

Microbe fixes nitrogen at a blistering 92 C

... before the three main branches of life ?bacteria, archaea and eukaryotes ?diverged some 3.5 billion years ag...he theory that the nitrogenase system arose within archaea and was later transferred laterally to bacteria. "There's been lots of evidence that point to high...

From hot springs to rice farms, scientists reveal new insights into the secret lives of archaea

...em to shake the label ''extremist.'' So it is with archaea (ar-KEY-uh), a collection of bacteria-like microor...ng things. For years, biologists have pigeonholed archaea as extremophiles-creatures that live in extreme conditions. Indeed, many species of archaea thrive i...

Study of protein folds offers insight into metabolic evolution

... of bacteria, animals, plants, fungi, protists and archaea the researchers analyzed. Of 776 metabolic protein folds surveyed, 16 were found to be omnipresent, and nine of those occurred in the earliest branches of the newly constructed tree. "These nine ancient folds represent architectures of fundamen...

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