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Archaea in Medical News

How defects in 1 gene cause 3 distinct and devastating human diseases

... structures for XPD, we suddenly see how it is working. The protein from archaea is a simplified model, but that doesnt stop us learning a lot about the ... learn a lot about human health by looking deep into evolutionary time. archaea have particular similarities with humans and other eukaryotes in the way ...

The 2009 Leibniz Prize: Eleven new scientific discoverers

... was the first marine microbiologist to prove the existence of microbial communities consisting of bacteria that reduce sulphate and methanotrophic archaea on the ocean floor. In the absence of oxygen, these microorganisms consume methane, which is present in abundance on the sea bed, thus reducing the ...

NWO/Spinoza Prize for literature, microbiology, physics and medicine

... Distinguished Professor at the University of Helsinki. De Vos is a leading expert in the molecular genetics of microorganisms, such as bacteria, archaea and fungi. For example, he has discovered that lactic acid bacteria communicate with each other by means of special peptides and that by producing ...

Protein Folds Research Offers Insight into Metabolic Evolution

... folds are quite ancient: These architectures were found to be quite common in all the species of bacteria, animals, plants, fungi, protists and archaea the researchers analyzed. Of 776 metabolic protein folds surveyed, 16 were found to be universal, and nine of those occurred in the earliest ...
Archaea in Biological News

Nature publishes new evidence about the deep biosphere written by biogeoscientists

... 10 centimeters of the seafloor. Below this level archaea appear to take over the major fraction of the biomass pool." According to Lipp, archaea make up at least 87 percent of organisms that colonize the deep biosphere. "These subsurface archaea can be viewed as starvelings," he continues. ...

Paired microbes eliminate methane using sulfur pathway

... this case, the microbial consortia consist of an archaea a single cell organism that consumes methane ... House, associate professor of geosciences. "The archaea take in the methane and produce a methyl sulfide, ... carbon monoxide for methane and found that the archaea could oxidize that as well and produce these ...

Symposium marks 30th anniversary of discovery of third domain of life

... Before Our Eyes: 30 Years of Molecular Phylogeny, archaea and Evolution will detail the exacting work that ... Carl Woese led the team that identified the archaea as a unique domain of life, distinct from ... believed that the microbes now called archaea were simply another taxon among bacteria. They ...

Ancient organisms discovered in Canadian gold mine

... domains of life -- eukaryotes, bacteria, and archaea -- branched off and went their separate ways ... shale samples, loaded with oily lipid remains of archaea found in a deep Canadian gold mine near Timmins, ... made of archaea-derived lipids." The archaea lived in water and sediments when the region was ...

Deep sea methane scavengers captured

... Earth's biomass. Yet, we have little idea what most of these bacteria and archaea are doing. It is not only their small size that makes them hard to study. ... genes for N2 fixation and demonstrated in lab experiments that the AOM archaea are indeed fixing N2. These results are intriguing, especially since the ...

Researchers probe a DNA repair enzyme

... pigmentosum. The researchers studied the archaeal version of Rad3. archaea are microbes whose DNA repair systems are closely related to those of ... domain stabilized by an iron-sulfur cluster, Spies said. Working with archaea has the advantage of allowing the researchers to increase the amount ...

Census of protein architectures offers new view of history of life

... architectures that would one day belong to the superkingdom known as the archaea was the first to lose a fold. That fold, a huge class of protein fold ... adds to the picture of how the superkingdoms emerged and diverged. The archaea jettisoned many of the folds that had been part of their original ....

Exploring standards to advance microbial genomics

... applauds the effort to coordinate balanced sampling of the Tree of Life recently launched through GEBA: the Genomic Encyclopedia of Bacteria and archaea ( http://www.jgi.doe.gov/programs/GEBA/index.html ). He also sees a way forward using single-cell genomics ⎯ a technique now being pursued in ...

Methane-eating microbes can use iron and manganese oxides to 'breathe'

... living in the sediments she used, she does not know which of these microbes is responsible for consuming methane. It might be one bacteria or archaea species, or it may be a consortium of microbes. She is trying to identify the organisms responsible. ...

Rampant helper syndrome

... The archaea are single-celled organisms and a domain unto themselves, quite apart from the so called eukaryotes, being bacteria and higher organisms. Many ...

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Archaea in Biological Technology

90 billion tons of microbial organisms live in the deep biosphere

... 10 centimeters of the seafloor. Below this level archaea appear to take over the major fraction of the biomass pool." According to Lipp, archaea make up at least 87 percent of organisms that colonize the deep biosphere. "These subsurface archaea can be viewed as starvelings," he continues. ...

Molecular sleuths track evolution through the ribosome

... that spell out the RNA of the ribosome in bacteria and archaea. These "molecular signatures" were so pronounced that Woese concluded that the archaea comprised a separate domain of life, distinct from bacteria and eukarya (animals, plants, fungi and protists). His classification system is now ...

Monitoring Microbial Populations Using Real-Time qPCR on the MJ Research Opticon 2 System

... assay costs make this method invaluable for the analysis of microbial populations. References 1. DeLong, E.F. archaea in coastal marine environments. Proc. Natl. Acad. Sci. 89: 5685- 5689 (1992). 2. Giovannoni, S.J., Britschgi, T.B., Moyer, C.L., ...

Comparing Fidelity and Performance of Proofreading PCR Enzymes

... (e.g., neutralizing antibodies) have not been directly demonstrated for PCR enzymes derived from hyperthermophilic archaea (e.g. Pfu DNA polymerase, KOD, Deep Vent). Although Pfx DNA polymerase is blended with neutralizing antibody, the results shown ...
Archaea in Biological Definition

Archaea

... Korarchaeota Phylum Nanoarchaeota The archaea are a major group of prokaryotes . Their ... of living things. He later renamed the groups archaea and Bacteria to emphasize this, and argued that ... things. Archaea, Bacteria and Eucarya archaea are similar to other prokaryotes in most aspects ...

Biology

... the separation of the three domains bacteria , archaea , and eukaryotes as described initially by ... begin with the three-domain system : archaea (originally Archaebacteria) -- Bacteria ... common descent ( UCD ) for all bacteria , archaea , and eukaryotes (see Three domain system ). ...

Prokaryote

... dividing prokaryotes into the Bacteria and archaea (originally Eubacteria and Archaebacteria) ... arrangement of Eukaryote, Bacteria, and archaea is called the three-domain system . ... are found in nearly all environments on earth. archaea in particular seem to thrive in harsh conditions, ...

Bacterium

... each of these and the eukaryotes all evolved separately and in 1990 emphasized this by promoting them to domains , which were renamed the Bacteria, archaea , and Eucarya . This redefinition has generally been accepted by molecular biologists but criticized by some others, who maintain that he ...

Genetic code

... for Cysteine. Another variant is found in some species of the yeast candida , where CUG codes for Serine. In some species of bacteria and archaea , a few non-standard amino acids are substituted for standard stop codons; UGA can code for selenocysteine and UAG can code for pyrrolysine . ...

Common descent

... code is generally regarded by biologists as definitive evidence in favor of the theory of universal common descent ( UCD ) for all bacteria , archaea , and eukaryotes (see Three domain system ). Analysis of the small differences in the genetic code has also provided support for UCD. The Tree of ...

Ion gradient

... is an interconvertible form of energy in active transport, electron potential generation, NADPH synthesis and ATP synthesis/hydrolysis. Some archaea , most notably halobacteria , make proton gradients by pumping in protons from the environment with the help of the solar driven enzyme ...

Endosymbiotic theory

... and in its size). Mitochondria utilize a different genetic code than the eukaryotic host cell; this code is very similar to bacteria and archaea . They are surrounded by two or more membranes , and the innermost of these shows differences in composition compared to the other membranes in ...

Bacterium

... each of these and the eukaryotes all evolved separately and in 1990 emphasized this by promoting them to domains , which were renamed the Bacteria, archaea , and Eucarya . This redefinition has generally been accepted by molecular biologists but criticized by some others, who maintain that he ...

Evolution

... A phylogenetic tree of all living things , based on rRNA gene data, showing the separation of the three domains bacteria , archaea , and eukaryotes as described initially by Carl Woese . Trees constructed with other genes are generally similar, although they may place some ...

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Archaea in Biological Dictionary

Eubacteria

... of the three main domains of life, along with the archaea and the Eukarya bacteria ( bak′tirēə ) ( ... than 150 ... The Eubacteria differ from the archaea in the form and structure of their ... ... . ... Eubacteria are differentiated from archaea primarily based on chemical ... [ Bacteria, ...

Archaebacteria

... The archaea are a group of single-celled microorganisms. A ... was a misnomer, ... ... Biochemistry of archaea ( Archaebacteria ) (Amsterdam: Elsevier Science ... ... archaeon or Archaeon ( ) n. , pl. archaea . Any of various single-celled prokaryotes ...

Prokaryotes

... smallest and most diverse group of organisms living on this planet, the archaea and bacteria. An introduction to the basic classification of living ... evolutionarily ancient, for billions of years the only form of life. ... archaea : bacteria-like prokaryotes . difference between aerobic ... Simple ...

Ribosomes

... Ribosomes ") are complexes of RNA and protein that are found in all cells. Ribosomes from bacteria, archaea and eukaryotes, the three domains of life on Earth, have significantly different structure and RNA. The ribosomes ... All living cells ...

Phylogenetic tree

... ... In a phylogenetic tree , each node with descendants represents the most recent ... A phylogenetic tree , showing how Eukaryota and archaea are more closely related ... ... in the form of the evolutionary tree that connects all organisms to each other. ... read more about the Tree ...

Insertion sequences

... terms,biology abbreviations ... insertion sequence ... Insertion Sequences show diverse recent activities in Cyanobacteria and archaea ... Mahillon J, Chandler M: Insertion sequences . ... ... Insertion Sequences , and Transposons – Encyclopedia.com has Episomes, Plasmids, .....

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