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Archaea
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A newly discovered organism thrives near deep-sea ocean vents at temperatures up to 121C, living off dissolved iron. Images, video, and links to related research. Press release from the National Science Foundation.
http://www.nsf.gov/od/lpa/news/03/pr0384.htm
Covers their main groupings, chemical differences from other life forms, fossil record, and the structure of their cell walls.
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Introduction to the Archaea Kingdoms had come to be accepted as the model by which all living things could be classified. At a more fundamental level, a distinction was made between the prokaryotic bacteria and the four eukaryotic kingdoms (plants, animals, fungi protists The...Links to popular press and journal articles, research news, and other sources of information about Archaea and extremophiles. Includes user comments.
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ArchaeaWeb Home Web is an information resource for researchers working with Archaea and extremophiles. At this website, you can find a variety of resources including recent publications, events and an archaeal genome BLAST server. Please look at the menu on the left...Shows the relationships among the reconginzed groups, and samples yet to be named or classified.
http://www3.ncbi.nlm.nih.gov/Tax.../Browser/wwwtax.cgi?name=Archaea
Microbiological journal devoted to original research on the Archaea. Author guide, publication schedule, and text of older articles.
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Archaea, an International Microbiology Journal The advance online edition of Archaea Volume 1, No. 6 (December) was published today. October 18, 2005 Free Online Distribution: There is free access to the entire contents of Archaea, Volume 1. Free access to articles published in Archaea, Volume...Links to information about thermophiles, halophiles, and other extremophiles both inside and outside of the domain Archaea.
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Life in Extreme Environments The Astrobiology Web Your Online Guide to the Living Universe Eukaryotes in extreme environments This website contains descriptions of various extremophiles including anaerobes, thermophiles, psychrophiles, acidophiles, alkalophiles, halophiles, barophiles, and xerophiles. Department of Zoology, The Natural History Museum, London. Microorganisms in Space An abstract of a presentation made at the...Taxonomy, description, and extensive references, with particular emphasis on the Crenarchaeota (classified here as a Kingdom.)
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Archaea Go to navigation for this section of the ToL site Go to quick links Go to quick search Go to detailed site links Site Navigation Browse Help Features Learning Contribute About advanced go to beginning of page Temporary Page Containing...Summary of research into the scientific uses of thermophiles and their heat-tolerant enzymes, such as PCR (polymerase chain reactions), toxic waste cleanup, and biomedical processes. [Free registration required]
http://www.the-scientist.com/yr1994/may/hotvent_940530.html
Discusses the unique lipid composition of their cell walls, bacteriorhodopsin photosynthesis, and the use of high concentrations of potassium to combat sodium osmosis.
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Microbial Wonders Of The Deep Halophiles ...Detailed discussion of the molecules involved in their cytoplasmic and photosynthetic membrane lipids, structural glycoproteins, ionic relationships, and photosynthetic cycle.
http://www.science.siu.edu/micro...icr425/425Notes/09-Halobact.html
Research on the methyltransferase enzymes involved in synthesis of glycine betaine in Actinopolyspora halophila and Ectothiorhodospira halochloris. Transfer of the relevant genes increased salt tolerance in E. coli.
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Extreme Halophiles Synthesize Betaine from Glycine by Methylation Nyyssölä et al. 275 (29 22196 Journal of Biological Chemistry Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal...Genome sequences of three Euryarchaeota species, Pyrococcus sp. OT3, Thermoplasma volcanium GSS1, and Archaeoglobus fulgidus, and related papers by the research group.
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ARCHAIC (ARCHAebacterial Information Collection) Related reports from our group Analysis of individual genomes Pyrococcus sp. OT3 The strain Update history Map of the genes, operons, and pseudo-genes identified within the genome Lists of genes, operons and pseudo-genes Sequences Genomic DNA sequence Nucleotide sequences of...Summary of interesting organisms discovered during a search for extremophiles, including a picture of the triangular halophile Haloarcula japonicus.
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HORIKOSHI Superbugs Horikoshi superbugs project conducted a world-wide search for bacteria that thrive under extreme conditions of pH, salinity, and temperature. Interesting specimens found during this search were studied regarding their DNA, RNA, proteins, lipids, polysaccharides as well as tolerance mechanisms, metabolic...Introduction to this life form, written at three different levels of complexity for use by educators and students.
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Archaea Archaea species live in extreme heat near deep sea vents. Click on image for full size (22K jpeg) Image courtesy of NOAA Archaea are microbes. Most live in extreme environments. These are called extremophyles. Other Archaea species are not extremophiles...Basic phylogeny, gene organization, and methods of DNA replication and transcription.
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Domain Archaea Comparative sequence analysis of 16S RNA molecules has elucidated that life on Earth is of 3 primary lineages (referred to as domains i) Eukarya (ii) Bacteria (iii)Archaea Kingdom Crenarchaeota: mainly hyperthermophiles Kingdom Euryarchaeota: methanogens, halophiles, Thermoplasma Archaeoglobus Kingdom Korarchaeota: based...