Crenarchaeota: A kingdom in the domain ARCHAEA comprised of thermoacidophilic, sulfur-dependent organisms. The two orders are SULFOLOBALES and THERMOPROTEALES.DNA, Archaeal: Deoxyribonucleic acid that makes up the genetic material of archaea.Archaea: One of the three domains of life (the others being BACTERIA and Eukarya), formerly called Archaebacteria under the taxon Bacteria, but now considered separate and distinct. They are characterized by: (1) the presence of characteristic tRNAs and ribosomal RNAs; (2) the absence of peptidoglycan cell walls; (3) the presence of ether-linked lipids built from branched-chain subunits; and (4) their occurrence in unusual habitats. While archaea resemble bacteria in morphology and genomic organization, they resemble eukarya in their method of genomic replication. The domain contains at least four kingdoms: CRENARCHAEOTA; EURYARCHAEOTA; NANOARCHAEOTA; and KORARCHAEOTA.Glyceryl Ethers: Compounds in which one or more of the three hydroxyl groups of glycerol are in ethereal linkage with a saturated or unsaturated aliphatic alcohol; one or two of the hydroxyl groups of glycerol may be esterified. These compounds have been found in various animal tissue.Pyrodictiaceae: A family of archaea, in the order DESULFUROCOCCALES consisting of anaerobic coccoid to disc-shaped cells. They grow either chemolithoautotrophically or by FERMENTATION. Three genera are recognized: Pyrodictium, Hyperthermus, and Pyrolobus.RNA, Archaeal: Ribonucleic acid in archaea having regulatory and catalytic roles as well as involvement in protein synthesis.Autotrophic Processes: The processes by which organisms use simple inorganic substances such as gaseous or dissolved carbon dioxide and inorganic nitrogen as nutrient sources. Contrasts with heterotrophic processes which make use of organic materials as the nutrient supply source. Autotrophs can be either chemoautotrophs (or chemolithotrophs), largely ARCHAEA and BACTERIA, which also use simple inorganic substances for their metabolic energy reguirements; or photoautotrophs (or photolithotrophs), such as PLANTS and CYANOBACTERIA, which derive their energy from light. Depending on environmental conditions some organisms can switch between different nutritional modes (autotrophy; HETEROTROPHY; chemotrophy; or PHOTOTROPHY) to utilize different sources to meet their nutrient and energy requirements.Genes, Archaeal: The functional genetic units of ARCHAEA.Genome, Archaeal: The genetic complement of an archaeal organism (ARCHAEA) as represented in its DNA.Korarchaeota: A kingdom in the domain ARCHAEA, comprising thermophilic organisms from terrestrial hot springs that are among the most primitive of all life forms. They have undergone comparatively little evolutionary change since the last common ancestor of all extant life.Sulfolobaceae: A family of SULFOLOBALES consisting of aerobic or facultatively anaerobic chemolithotrophic cocci, usually occurring singly. They grow best at a pH of about 2.Phylogeny: The relationships of groups of organisms as reflected by their genetic makeup.Thermofilaceae: A family of THERMOPROTEALES consisting of anaerobic, thermoacidophilic thin rods found in solfataric hot springs.Hot Springs: Habitat of hot water naturally heated by underlying geologic processes. Surface hot springs have been used for BALNEOLOGY. Underwater hot springs are called HYDROTHERMAL VENTS.RNA, Ribosomal, 16S: Constituent of 30S subunit prokaryotic ribosomes containing 1600 nucleotides and 21 proteins. 16S rRNA is involved in initiation of polypeptide synthesis.Nanoarchaeota: A kingdom of hyperthermophilic ARCHAEA found in diverse environments.Archaeal Proteins: Proteins found in any species of archaeon.Seawater: The salinated water of OCEANS AND SEAS that provides habitat for marine organisms.Euryarchaeota: A phylum of ARCHAEA comprising at least seven classes: Methanobacteria, Methanococci, Halobacteria (extreme halophiles), Archaeoglobi (sulfate-reducing species), Methanopyri, and the thermophiles: Thermoplasmata, and Thermococci.DNA, Ribosomal: DNA sequences encoding RIBOSOMAL RNA and the segments of DNA separating the individual ribosomal RNA genes, referred to as RIBOSOMAL SPACER DNA.Sulfolobus: A genus of aerobic, chemolithotrophic, coccoid ARCHAEA whose organisms are thermoacidophilic. Its cells are highly irregular in shape, often lobed, but occasionally spherical. It has worldwide distribution with organisms isolated from hot acidic soils and water. Sulfur is used as an energy source.Geologic Sediments: A mass of organic or inorganic solid fragmented material, or the solid fragment itself, that comes from the weathering of rock and is carried by, suspended in, or dropped by air, water, or ice. It refers also to a mass that is accumulated by any other natural agent and that forms in layers on the earth's surface, such as sand, gravel, silt, mud, fill, or loess. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p1689)Biodiversity: The variety of all native living organisms and their various forms and interrelationships.Sulfolobus acidocaldarius: A species of aerobic, chemolithotrophic ARCHAEA consisting of coccoid cells that utilize sulfur as an energy source. The optimum temperature for growth is 70-75 degrees C. They are isolated from acidic fields.Ammonia: A colorless alkaline gas. It is formed in the body during decomposition of organic materials during a large number of metabolically important reactions. Note that the aqueous form of ammonia is referred to as AMMONIUM HYDROXIDE.Plankton: Community of tiny aquatic PLANTS and ANIMALS, and photosynthetic BACTERIA, that are either free-floating or suspended in the water, with little or no power of locomotion. They are divided into PHYTOPLANKTON and ZOOPLANKTON.Desulfurococcaceae: A family of archaea, in the order DESULFUROCOCCALES, consisting of anaerobic cocci which utilize peptides, proteins or carbohydrates facultatively by sulfur respiration or fermentation. There are eight genera: AEROPYRUM, Desulfurococcus, Ignicoccus, Staphylothermus, Stetteria, Sulfophoboccus, Thermodiscus, and Thermosphaera. (From Bergey's Manual of Systematic Bacteriology, 2d ed)Molecular Sequence Data: Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.Sequence Analysis, DNA: A multistage process that includes cloning, physical mapping, subcloning, determination of the DNA SEQUENCE, and information analysis.Methylmalonyl-CoA Decarboxylase: A carboxy-lyase that catalyzes the decarboxylation of (S)-2-Methyl-3-oxopropanoyl-CoA to propanoyl-CoA. In microorganisms the reaction can be coupled to the vectorial transport of SODIUM ions across the cytoplasmic membrane.Bacteria: One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive.Water Microbiology: The presence of bacteria, viruses, and fungi in water. This term is not restricted to pathogenic organisms.Gene Expression Regulation, Archaeal: Any of the processes by which cytoplasmic or intercellular factors influence the differential control of gene action in archaea.Genes, rRNA: Genes, found in both prokaryotes and eukaryotes, which are transcribed to produce the RNA which is incorporated into RIBOSOMES. Prokaryotic rRNA genes are usually found in OPERONS dispersed throughout the GENOME, whereas eukaryotic rRNA genes are clustered, multicistronic transcriptional units.Methane: The simplest saturated hydrocarbon. It is a colorless, flammable gas, slightly soluble in water. It is one of the chief constituents of natural gas and is formed in the decomposition of organic matter. (Grant & Hackh's Chemical Dictionary, 5th ed)Marine Biology: The study of the origin, structure, development, growth, function, genetics, and reproduction of organisms which inhabit the OCEANS AND SEAS.Soil Microbiology: The presence of bacteria, viruses, and fungi in the soil. This term is not restricted to pathogenic organisms.Ecosystem: A functional system which includes the organisms of a natural community together with their environment. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)Fresh Water: Water containing no significant amounts of salts, such as water from RIVERS and LAKES.Anacardiaceae: The sumac plant family in the order Sapindales, subclass Rosidae, class Magnoliopsida. They are tropical and subtropical trees, shrubs, and woody vines that have resin ducts in the bark. The sap of many of the species is irritating to the skin.Echinodermata: A phylum of the most familiar marine invertebrates. Its class Stelleroidea contains two subclasses, the Asteroidea (the STARFISH or sea stars) and the Ophiuroidea (the brittle stars, also called basket stars and serpent stars). There are 1500 described species of STARFISH found throughout the world. The second class, Echinoidea, contains about 950 species of SEA URCHINS, heart urchins, and sand dollars. A third class, Holothuroidea, comprises about 900 echinoderms known as SEA CUCUMBERS. Echinoderms are used extensively in biological research. (From Barnes, Invertebrate Zoology, 5th ed, pp773-826)Acanthaceae: A plant family of the order Lamiales. It is characterized by simple leaves in opposite pairs, cystoliths (enlarged cells containing crystals of calcium carbonate), and bilaterally symmetrical and bisexual flowers that are usually crowded together. The common name for Ruellia of wild petunia is easily confused with PETUNIA.Brachyura: An infraorder of chiefly marine, largely carnivorous CRUSTACEA, in the order DECAPODA, including the genera Cancer, Uca, and Callinectes.Agaricales: An extensive order of basidiomycetous fungi whose fruiting bodies are commonly called mushrooms.Catfishes: Common name of the order Siluriformes. This order contains many families and over 2,000 species, including venomous species. Heteropneustes and Plotosus genera have dangerous stings and are aggressive. Most species are passive stingers.Organelles: Specific particles of membrane-bound organized living substances present in eukaryotic cells, such as the MITOCHONDRIA; the GOLGI APPARATUS; ENDOPLASMIC RETICULUM; LYSOSOMES; PLASTIDS; and VACUOLES.Transition Temperature: The temperature at which a substance changes from one state or conformation of matter to another.BooksCell Wall: The outermost layer of a cell in most PLANTS; BACTERIA; FUNGI; and ALGAE. The cell wall is usually a rigid structure that lies external to the CELL MEMBRANE, and provides a protective barrier against physical or chemical agents.Halobacterium: A genus of HALOBACTERIACEAE whose growth requires a high concentration of salt. Binary fission is by constriction.Peptidoglycan

Two family B DNA polymerases from Aeropyrum pernix, an aerobic hyperthermophilic crenarchaeote. (1/102)

DNA polymerase activities in fractionated cell extract of Aeropyrum pernix, a hyperthermophilic crenarchaeote, were investigated. Aphidicolin-sensitive (fraction I) and aphidicolin-resistant (fraction II) activities were detected. The activity in fraction I was more heat stable than that in fraction II. Two different genes (polA and polB) encoding family B DNA polymerases were cloned from the organism by PCR using degenerated primers based on the two conserved motifs (motif A and B). The deduced amino acid sequences from their entire coding regions contained all of the motifs identified in family B DNA polymerases for 3'-->5' exonuclease and polymerase activities. The product of polA gene (Pol I) was aphidicolin resistant and heat stable up to 80 degrees C. In contrast, the product of polB gene (Pol II) was aphidicolin sensitive and stable at 95 degrees C. These properties of Pol I and Pol II are similar to those of fractions II and I, respectively, and moreover, those of Pol I and Pol II of Pyrodictium occultum. The deduced amino acid sequence of A. pernix Pol I exhibited the highest identities to archaeal family B DNA polymerase homologs found only in the crenarchaeotes (group I), while Pol II exhibited identities to homologs found in both euryarchaeotes and crenarchaeotes (group II). These results provide further evidence that the subdomain Crenarchaeota has two family B DNA polymerases. Furthermore, at least two DNA polymerases work in the crenarchaeal cells, as found in euryarchaeotes, which contain one family B DNA polymerase and one heterodimeric DNA polymerase of a novel family.  (+info)

Lessons from the Aeropyrum pernix genome. (2/102)

Aeropyrum pernix is the first crenarchaeote and first aerobic member of the Archaea for which the complete genome sequence has been determined. The sequence confirms the distinct nature of crenarchaeotes and provides new insight into the relationships between the three domains: Bacteria, Archaea and Eukaryotes.  (+info)

Novel prenyltransferase gene encoding farnesylgeranyl diphosphate synthase from a hyperthermophilic archaeon, Aeropyrum pernix. Molecularevolution with alteration in product specificity. (3/102)

Prenyltransferases catalyse sequential condensations of isopentenyl diphosphate with allylic diphosphates. Previously, we reported the presence of farnesylgeranyl diphosphate (FGPP) synthase activity synthesizing C25 isoprenyl diphosphate in Natronobacterium pharaonis which is a haloalkaliphilic archaeon having C20-C25 diether lipids in addition to C20-C20 diether lipids commonly occurring in archaea [Tachibana, A. (1994) FEBS Lett. 341, 291-294]. Recently, it was found that a newly isolated aerobic hyperthermophilic archaeon, Aeropyrum pernix, had only C25-C25 diether lipids, not the usual C20-containing lipids [Morii, H., Yagi, H., Akutsu, H., Nomura, N., Sako, Y. & Koga, Y. (1999) Biochim. Biophys. Acta 1436, 426-436]. In this report, we describe the isoloation from A. pernix of the novel prenyltransferase gene, fgs, encoding FGPP synthase. The protein encoded by fgs was expressed in Escherichia coli as a glutathione S-transferase fusion protein and produced FGPP as a final product. Phylogenetic analysis of fgs with other prenyltransferases revealed that the short-chain prenyltransferase family is divided into three subfamilies: bacterial subfamily I, eukaryotic subfamily II, and archaeal subfamily III. fgs is clearly contained within the archaeal geranylgeranyl diphosphate (GGPP) synthase group (subfamily III), suggesting that FGPP synthase evolved from an archaeal GGPP synthase with an alteration in product specificity.  (+info)

pING family of conjugative plasmids from the extremely thermophilic archaeon Sulfolobus islandicus: insights into recombination and conjugation in Crenarchaeota. (4/102)

A novel family of conjugative plasmids from Sulfolobus comprising the active variants pING1, -4, and -6 and the functionally defective variants pING2 and -3, which require the help of an active variant for spreading, has been extensively characterized both functionally and molecularly. In view of the sparse similarity between bacterial and archaeal conjugation and the lack of a practical genetic system for Sulfolobus, we compared the functions and sequences of these variants and the previously described archaeal conjugative plasmid pNOB8 in order to identify open reading frames (ORFs) and DNA sequences that are involved in conjugative transfer and maintenance of these plasmids in Sulfolobus. The variants pING4 and -6 are reproducibly derived from pING1 in vivo by successive transpositions of an element from the Sulfolobus genome. The small defective but mobile variants pING2 and -3, which both lack a cluster of highly conserved ORFs probably involved in plasmid transfer, were shown to be formed in vivo by recombinative deletion of the larger part of the genomes of pING4 and pING6, respectively. The efficient occurrence of these recombination processes is further evidence for the striking plasticity of the Sulfolobus genome.  (+info)

Acidilobus aceticus gen. nov., sp. nov., a novel anaerobic thermoacidophilic archaeon from continental hot vents in Kamchatka. (5/102)

New thermoacidophilic organisms that were able to grow anaerobically on starch were isolated from the acidic hot springs of Kamchatka. Strain 1904T, isolated from a hot spring of the Moutnovski volcano, was characterized in detail. Its cells were regular or irregular cocci that were 1-2 microm in diameter, non-motile, and had a cell envelope consisting of one layer of subunits. The new organism was a hyperthermophile, growing in the temperature range 60-92 degrees C (with an optimum at 85 degrees C), an acidophile, having the pH range for growth of 2.0-6.0 (with an optimum at 3.8), and an obligate anaerobe. It fermented starch, forming acetate as the main growth product. Other growth substrates were yeast extract, beef extract and soya extract. Growth on yeast extract, beef extract and soya extract was stimulated by elemental sulfur, which was reduced to H2S. Acetate, arabinose, cellulose, formate, fructose, galactose, glucose, glycine, guar gum, lichenan, malate, maltose, methanol, pectin, pyruvate, propionate, xylan, xylose or a mixture of amino acids failed to support growth both in the presence and the absence of sulfur. When starch was used as the growth substrate, yeast extract (100 mg l(-1)) was required as a growth factor. The G+C content of the DNA was found to be 53.8 mol%. Comparison of the complete 16S rDNA sequence with databases revealed that the new isolate belonged to the kingdom Crenarchaeota. It was not closely related to any described genera (showing sequence similarity below 90.8%) and formed a separate branch of the Crenarchaeota. On the basis of physiological differences and rRNA sequence data, a new genus--Acidilobus--is proposed, the type species being Acidilobus aceticus strain 1904T (= DSM 11585T).  (+info)

Towards understanding the first genome sequence of a crenarchaeon by genome annotation using clusters of orthologous groups of proteins (COGs). (6/102)

BACKGROUND: Standard archival sequence databases have not been designed as tools for genome annotation and are far from being optimal for this purpose. We used the database of Clusters of Orthologous Groups of proteins (COGs) to reannotate the genomes of two archaea, Aeropyrum pernix, the first member of the Crenarchaea to be sequenced, and Pyrococcus abyssi. RESULTS: A. pernix and P. abyssi proteins were assigned to COGs using the COGNITOR program; the results were verified on a case-by-case basis and augmented by additional database searches using the PSI-BLAST and TBLASTN programs. Functions were predicted for over 300 proteins from A. pernix, which could not be assigned a function using conventional methods with a conservative sequence similarity threshold, an approximately 50% increase compared to the original annotation. A. pernix shares most of the conserved core of proteins that were previously identified in the Euryarchaeota. Cluster analysis or distance matrix tree construction based on the co-occurrence of genomes in COGs showed that A. pernix forms a distinct group within the archaea, although grouping with the two species of Pyrococci, indicative of similar repertoires of conserved genes, was observed. No indication of a specific relationship between Crenarchaeota and eukaryotes was obtained in these analyses. Several proteins that are conserved in Euryarchaeota and most bacteria are unexpectedly missing in A. pernix, including the entire set of de novo purine biosynthesis enzymes, the GTPase FtsZ (a key component of the bacterial and euryarchaeal cell-division machinery), and the tRNA-specific pseudouridine synthase, previously considered universal. A. pernix is represented in 48 COGs that do not contain any euryarchaeal members. Many of these proteins are TCA cycle and electron transport chain enzymes, reflecting the aerobic lifestyle of A. pernix. CONCLUSIONS: Special-purpose databases organized on the basis of phylogenetic analysis and carefully curated with respect to known and predicted protein functions provide for a significant improvement in genome annotation. A differential genome display approach helps in a systematic investigation of common and distinct features of gene repertoires and in some cases reveals unexpected connections that may be indicative of functional similarities between phylogenetically distant organisms and of lateral gene exchange.  (+info)

Axial differences in community structure of Crenarchaeota and Euryarchaeota in the highly compartmentalized gut of the soil-feeding termite Cubitermes orthognathus. (7/102)

Methanogenesis represents an important electron sink reaction in the hindgut of soil-feeding termites. This is the first comprehensive analysis of the archaeal community structure within the highly compartmentalized intestinal tract of a humivorous insect, combining clonal analysis and terminal restriction fragment (T-RF) length polymorphism (T-RFLP) fingerprinting of the archaeal communities in the different gut compartments of Cubitermes orthognathus. We found that the morphological and physicochemical heterogeneity of the gut is reflected in a large phylogenetic diversity and pronounced axial differences in the composition of the archaeal gut microbiota, notably among those clones or ribotypes that could be assigned to methanogenic taxa. Comparative analysis of the relative frequencies of different archaeal lineages among the small-subunit rRNA gene (SSU rDNA) clones and their corresponding T-RF indicated that the archaeal community in the anterior, extremely alkaline hindgut compartment (P1) consists mainly of members of the Methanosarcinaceae, whereas Methanobacteriaceae and Methanomicrobiales predominate in the subsequent, more posterior compartments (P3/4a and P4b). The relative abundance of Thermoplasmales increased towards the rectum (P5). SSU rDNA sequences representing Crenarchaeota, which have not yet been reported to occur in the intestinal tracts of arthropods, were detected in all gut sections. We discuss how the spatial distribution of methanogenic populations may be linked to axial heterogeneity in the physicochemical gut conditions and to functional adaptations to their respective ecological niches.  (+info)

Kinetic study of sn-glycerol-1-phosphate dehydrogenase from the aerobic hyperthermophilic archaeon, Aeropyrum pernix K1. (8/102)

A gene having high sequence homology (45-49%) with the glycerol-1-phosphate dehydrogenase gene from Methanobacterium thermoautotrophicum was cloned from the aerobic hyperthermophilic archaeon Aeropyrum pernix K1 (JCM 9820). This gene expressed in Escherichia coli with the pET vector system consists of 1113 nucleotides with an ATG initiation codon and a TAG termination codon. The molecular mass of the purified enzyme was estimated to be 38 kDa by SDS/PAGE and 72.4 kDa by gel column chromatography, indicating presence as a dimer. The optimum reaction temperature of this enzyme was observed to be 94-96 degrees C at near neutral pH. This enzyme was subjected to two-substrate kinetic analysis. The enzyme showed substrate specificity for NAD(P)H-dependent dihydroxyacetone phosphate reduction and NAD(+)-dependent glycerol-1-phosphate (Gro1P) oxidation. NADP(+)-dependent Gro1P oxidation was not observed with this enzyme. For the production of Gro1P in A. pernix cells, NADPH is the preferred coenzyme rather than NADH. Gro1P acted as a noncompetitive inhibitor against dihydroxyacetone phosphate and NAD(P)H. However, NAD(P)(+) acted as a competitive inhibitor against NAD(P)H and as a noncompetitive inhibitor against dihydroxyacetone phosphate. This kinetic data indicates that the catalytic reaction by glycerol- 1-phosphate dehydrogenase from A. pernix follows a ordered bi-bi mechanism.  (+info)

The Miscellaneous Crenarchaeotic Group (MCG) is an archaeal lineage whose members are widespread and abundant in marine sediments. MCG archaea have also been consistently found in stratified euxinic lakes. In this work, we have studied archaeal communities in three karstic lakes to reveal potential habitat segregation of MCG subgroups between planktonic and sediment compartments. In the studied lakes, archaeal assemblages were strikingly similar to those of the marine subsurface with predominance of uncultured Halobacteria in the plankton and Thermoplasmata and MCG in anoxic, organic-rich sediments. Multivariate analyses identified sulphide and dissolved organic carbon as predictor variables of archaeal community composition. Quantification of MCG using a newly designed qPCR primer pair that improves coverage for MCG subgroups prevalent in the studied lakes revealed conspicuous populations in both the plankton and the sediment. Subgroups MCG-5a and -5b appear as planktonic specialists thriving ...
Terpenoids, also known as isoprenoids, are a large class of natural products consisting of isoprene (C5) units. There are two biosynthetic pathways, the mevalonate pathway [MD:M00095] and the non-mevalonate pathway or the MEP/DOXP pathway [MD:M00096], for the terpenoid building blocks: isopentenyl diphosphate (IPP) and dimethylallyl diphosphate (DMAPP). The action of prenyltransferases then generates higher-order building blocks: geranyl diphosphate (GPP), farsenyl diphosphate (FPP), and geranylgeranyl diphosphate (GGPP), which are the precursors of monoterpenoids (C10), sesquiterpenoids (C15), and diterpenoids (C20), respectively. Condensation of these building blocks gives rise to the precursors of sterols (C30) and carotenoids (C40). The MEP/DOXP pathway is absent in higher animals and fungi, but in green plants the MEP/DOXP and mevalonate pathways co-exist in separate cellular compartments. The MEP/DOXP pathway, operating in the plastids, is responsible for the formation of essential oil ...
SWISS-MODEL Repository entry for A0RTP4 (PDXT_CENSY), Pyridoxal 5-phosphate synthase subunit PdxT. Cenarchaeum symbiosum (strain A)
Valid publication: PROKOFEVA (M.I.), KOSTRIKINA (N.A.), KOLGANOVA (T.V.), TOUROVA (T.P.), LYSENKO (A.M.), LEBEDINSKY (A.V.) and BONCH-OSMOLOVSKAYA (E.A.): Isolation of the anaerobic thermoacidophilic crenarchaeote Acidilobus saccharovorans sp. nov. and proposal of Acidilobales ord. nov., including Acidilobaceae fam. nov. and Caldisphaeraceae fam. nov. Int. J. Syst. Evol. Microbiol., 2009, 59, 3116-3122 ...
Award Title: COLLABORATIVE RESEARCH: The role of marine Crenarchaeota in nitrification and links among biogeochemical processes in the eastern tropical North Pacific and Gulf of ...
A gene for membrane-integral inorganic pyrophosphatase (miPPase) was found in the composite genome of the extremophile archaeon Candidatus Korarchaeum cryptofilum (CKc). This korarchaeal genome shows unusual partial similarity to both major archaeal phyla Crenarchaeota and Euryarchaeota. Thus this Korarchaeote might have retained features that represent an ancestral archaeal form, existing before the occurrence of the evolutionary bifurcation into Crenarchaeota and Euryarchaeota. In addition, CKc lacks five genes that are common to early genomes at the LUCA border. These two properties independently suggest a pre-LUCA evolutionary position of this extremophile. Our finding of the miPPase gene in the CKc genome points to a role for the enzyme in the energy conversion of this very early archaeon. The structural features of its miPPase indicate that it can pump protons through membranes. An miPPase from the extremophile bacterium Caldicellulosiruptor saccharolyticus also has a sequence indicating a ...
To search for genetic clues to carbon and energy metabolism in Crenarchaeota, the researchers extracted C. symbiosum DNA from its host sponge and constructed a DNA library for sequencing the symbiont s genome. Hallam et al. then searched for representative genes linked to pathways associated with autotrophic carbon assimilation. They found many components of two pathways: the 3-hydroxypropionate cycle and the reductive tricarboxylic acid (citric acid) pathway (TCA). Both cycles involve a multistep series of chemical reactions that convert inorganic compounds in this case, carbon dioxide into organic carbon molecules. Though some components of the 3-hydroxypropionate cycle were missing in C. symbiosum, enough elements (including core proteins) were found to support a modified version of this pathway for carbon assimilation, using carbon dioxide ...
In constrast to bacteria, all archaea possess cell walls lacking peptidoglycan and a number of different cell envelope components have also been described. A paracrystalline protein surface layer, commonly referred to as S-layer, is present in nearly all archaea described to date. S-layers are composed of only one or two proteins and form different lattice structures. In this review, we summarise current understanding of archaeal S-layer proteins, discussing topics such as structure, lattice type distribution among archaeal phyla and glycosylation. The hexagonal lattice type is dominant within the phylum Euryarchaeota, while in the Crenarchaeota this feature is mainly associated with specific orders. S-layers exclusive to the Crenarchaeota have also been described, which are composed of two proteins. Information regarding S-layers in the remaining archaeal phyla is limited, mainly due to organism description through only culture-independent methods. Despite the numerous applied studies using bacterial S
The Fisheries Society of the British Isles awarded the 2017 Le Cren Medal to FishBase for "a lifelong contribution to all aspects of the study of fish biology and/or fisheries science, with a focus on conservation, training or public understanding of the discipline.". In a ceremony held on July 6, 2017 in Exeter, United Kingdom as part of the FSBI 50th Anniversary, long-term FishBase coordinator and Senior Scientist at Geomar Helmholtz-Zentrum für Ozeanforschung Kiel, Dr. Rainer Froese, received the award from the President of the FSBI, Dr. Iain Barber.. As he presented FishBase with the honour, Dr. Barber highlighted the importance of having a database that gathers and provides information on more than 33,000 species and that is maintained by an international team of experts.. The Le Cren Medal is inspired by E. David Le Cren, a fisheries biologist who wrote in 1951 the citation classic "The length-weight relationship and seasonal cycle in gonad weight and condition in the perch (Perca ...
TY - JOUR. T1 - First insight into the genome of an uncultivated crenarchaeote from soil. AU - Quaiser, Achim. AU - Ochsenreiter, Torsten. AU - Klenk, Hans-Peter. AU - Kletzin, Arnulf. AU - Treusch, Alexander H. AU - Meurer, Guido. AU - Eck, Jürgen. AU - Sensen, Christoph W. AU - Schleper, Christa. PY - 2002. Y1 - 2002. N2 - Molecular phylogenetic surveys based on the characterization of 16S rRNA genes have revealed that soil is an environment particularly rich in microbial diversity. A clade of crenarchaeota (archaea) has frequently been detected among many other novel lineages of uncultivated bacteria. In this study we have initiated a genomic approach for the characterization of uncultivated microorganisms from soil. We have developed a procedure based on a two-phase electrophoresis technique that allows the fast and reliable purification of concentrated and clonable, high molecular weight DNA. From this DNA we have constructed complex large-insert genomic libraries. Using archaea-specific ...
Threonine--tRNA ligase; Catalyzes the attachment of threonine to tRNA(Thr) in a two-step reaction- L-threonine is first activated by ATP to form Thr-AMP and then transferred to the acceptor end of tRNA(Thr). Also edits incorrectly charged L-seryl-tRNA(Thr); Belongs to the class-II aminoacyl-tRNA synthetase family (621 aa ...
Exosome complex component Csl4; Non-catalytic component of the exosome, which is a complex involved in RNA degradation. Increases the RNA binding and the efficiency of RNA degradation. Helpful for the interaction of the exosome with A-poor RNAs (183 aa ...
ID A0A0M0BRM1_9ARCH Unreviewed; 664 AA. AC A0A0M0BRM1; DT 11-NOV-2015, integrated into UniProtKB/TrEMBL. DT 11-NOV-2015, sequence version 1. DT 20-DEC-2017, entry version 11. DE RecName: Full=V-type ATP synthase subunit I {ECO:0000256,RuleBase:RU361189}; GN ORFNames=AC478_03315 {ECO:0000313,EMBL:KON31074.1}; OS miscellaneous Crenarchaeota group-1 archaeon SG8-32-3. OC Archaea; Candidatus Bathyarchaeota; MCG-1. OX NCBI_TaxID=1685125 {ECO:0000313,EMBL:KON31074.1, ECO:0000313,Proteomes:UP000054016}; RN [1] {ECO:0000313,Proteomes:UP000054016} RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RA Lazar C.S., Baker B.J., Seitz K.W., Hyde A.S., Dick G.J., RA Hinrichs K.-U., Teske A.P.; RT "New insights into the roles of widespread benthic archaea in carbon RT and nitrogen cycling."; RL Submitted (JUN-2015) to the EMBL/GenBank/DDBJ databases. CC -!- SIMILARITY: Belongs to the V-ATPase 116 kDa subunit family. CC {ECO:0000256,RuleBase:RU361189}. CC -!- CAUTION: The sequence shown here is derived from an CC ...
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A metaproteomic survey of surface coastal waters near Palmer Station on the Antarctic Peninsula, West Antarctica, was performed, revealing marked differences in the functional capacity of summer and winter communities of bacterioplankton. Proteins from Flavobacteria were more abundant in the summer metaproteome, whereas winter was characterized by proteins from ammonia-oxidizing Marine Group I Crenarchaeota. Proteins prevalent in both seasons were from SAR11 and Rhodobacterales clades of Alphaproteobacteria, as well as many lineages of Gammaproteobacteria. The metaproteome data were used to elucidate the main metabolic and energy generation pathways and transport processes occurring at the microbial level in each season. In summer, autotrophic carbon assimilation appears to be driven by oxygenic photoautotrophy, consistent with high light availability and intensity. In contrast, during the dark polar winter, the metaproteome supported the occurrence of chemolithoautotrophy via the ...
Florida Atlantic University (Acantheae, Acanthopterygii, Acanthus Clade, Acari, African Ruellia, Agaricales, Agaricomycotina, Aleocharinae, Aliatypus, Anacardiaceae, Andalucia, Ankylosauria, Arcellinida, Architeuthis, Archon bostanchii, Archonias brassolis, Argonauta, Asellariales, Aspidogastrea, Asteroidea, Atlanta brunnea, Aulacidae, Berryteuthis magister nipponensis, Bolitaena pygmaea, Bolitoglossinae, Calisto, Callichthyidae, Cardiapoda, Cardiapoda richardi, Carinaria, Carinaria challengeri, Carinaria cithara, Carinaria cristata, Carinaria galea, Carinaria japonica, Carinaria lamarcki, Carinariidae, Caryophyllales, Cassieae sensu lato (pro parte), Chaetothyriales, Chiroptera, Chlorarachniophytes, Cicindis horni, Ciconiidae, Classicula, Clusiidae, Core Eudicots, Crenarchaeota, Cryptalyra, Cryptomycocolax, Cryptoteuthis brevibracchiata, Cystobasidiomycetes, Dacrymycetales, Delitschiaceae, Dimargaritales, Diptera, Discoteuthis sp. A, Diversisporales, Echinodermata, Echinophthiriidae, ...
Sako, Y., Nomura, N., Uchida, A., Ishida, Y., Morii, H., Koga, Y., Hoaki, T., and Maruyama, T. 1996. Aeropyrum pernix gen. nov., sp. nov., a novel aerobic hyperthermophilic archaeon growing at temperatures up to 100 degrees C. Int. J. Syst. Bacteriol. 46:1070-1077 ...
Natura - nature Mundus - physical world;material world Naturalia Biota 3.1 Domain "Archaea" C.R. Woese et al., 1990 H,N,P,R,B,L; Ref:G.M. Garrity et al., 2007:6 (implicit position); Count:[*]4p;9c;15o;25f;97g;326s 1.1 Phylum "Crenarchaeota" G.M. Garrity & J.G. Holt, 2001 H,N,P,R,B,L; Ref:G.M. Garrity et al., 2007:6; Count:[*]1c;4o;6f;26g;54s 1.2 Phylum "Thaumarchaeota" H,N,P,R,B,L; Ref:J.P. Euz by, 1997-present:15 Jun 2009 (validity questionable); Count:[*]1o;1f;1g;1s 2 Phylum "Euryarchaeota" G.M. Garrity & J.G. Holt, 2001 H,N,P,R,B,L; Ref:G.M. Garrity et al., 2007:10; Count:[*]8c;10o;18f;69g;270s 3 Phylum "Nanoarchaeota" Huber et al., 2002 H,N,P,R,B,L; Ref:H. Huber et al., 2002 (new taxon); Count:[*]1g;1s ...
Os korarqueotas (Korarchaeota) son un filo de arqueas.[1] O nome procede do xénero principal do grupo Korarchaeum. Tamén se lles ten chamado Xenarchaea e Xenarchaeota.. Foron descubertas a partir de mostras de secuencias xenómicas de ARNr de 16S recollidas en ambientes naturais e non se puideron cultivar. As Korarchaeota só se atoparon en ambientes hidrotermais de altas temperaturas. Parece que se diversificaron a diferentes niveis filoxenéticos de acordo coa temperatura, salinidade das augas, e xeografía.[2] Son pouco abundantes na natureza.[2][3][4] Os procesos metabólicos de Korarchaeota, incluíndo como conseguen enerxía e obteñen o carbono, son descoñecidos. A análise das súas secuencias de ARNr de 16 S suxire que estas especies non forman parte dos dous principais grupos de arqueas, Crenarchaeota e Euryarchaeota [5]. Parece que son un grupo basal de arqueas, xa que teñen cracterísitcas tanto de Crenarchaeota coma de Euryarchaeota. O xenoma de Korarchaeum cryptofilum, que foi ...
Lineage: cellular organisms; Archaea; TACK group; Crenarchaeota; Thermoprotei; Desulfurococcales; Pyrodictiaceae; Hyperthermus; Hyperthermus ...
A long-standing question is how chromosomal DNA is packaged in Crenarchaeota, a major group of archaea, which synthesize large amounts of unique small DNA-binding proteins but in general contain no archaeal histones. In the present work, we tested our hypothesis that the two well-studied crenarchaeal chromatin proteins Cren7 and Sul7d compact DNA by both DNA bending and bridging. We show that the two proteins are capable of compacting... ...
There are species of shark that are bioluminescent and have evolved ocular structures designed to detect faint light patterns in the deep ocean produced by other bioluminescent sharks that live at depths from 600 to 3,000 feet in the mesopelagic zone where very little sunlight reaches. These eyes as expected, have visual adaptations optimized for […]. ...
As Archaea ou arqueas (do grego ἀρχαῖα os antigos) son un grupo de microorganismos unicelulares de morfoloxía procariótica (sen núcleo nin, en xeral, orgánulos membranosos internos), que forman un dos tres grandes dominios dos seres vivos, e que son diferentes das bacterias.. No pasado as arqueas foran clasificadas coas bacterias como procariotas encadradas no antigo reino Monera e recibían o nome de arquebacterias, pero esta clasificación xa non se utiliza.[1] En realidade, as Archaea teñen unha historia evolutiva independente e mostran moitas diferenzas na súa bioquímica coas outras formas de vida, polo que foron clasificadas nun dominio separado dentro do sistema de tres dominios: Archaea, Bacteria e Eukaryota.[2]. As Archaea divídense en cinco filos recoñecidos, pero pénsase que poden haber máis. Destes grupos, os Crenarchaeota e os Euryarchaeota son os máis intensamente estudados. A clasificación das arqueas é aínda difícil, porque a gran maioría nunca foron ...
Energy to propel our cars, running our businesses, even to switch a mere light bulb requires one or the other type of fossil fuels.. Continue Reading…. ...
China Merchants Group has made an informal bid to buy Baltic Exchange, becoming the latest contender for the business, sources told Reuters.
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Diversity, distribution and genetic comparison of Archaea associated with the surface mucus of corals from three genera, namely Acanthastrea sp., Favia sp. and Fungia sp., from the Gulf of Eilat, Israel and from Heron Island, Australia were studied. Sequencing of the 16S rRNA gene of the coral-associated Archaea revealed dominance of Crenarchaeota (79%, on average). In this phylum, 87% of the sequences were similar (,or= 97%) to the Thermoprotei, with 76% of these being similar (,or= 97%) to the ammonium oxidizer, Nitrosopumilus maritimus. Most of the coral-associated euryarchaeotal sequences (69%) were related to marine group II, while other euryarchaeotal clades were found to be related to anaerobic methanotrophs (8%), anaerobic nitrate reducers (i.e. denitrification, 15%) and marine group III (8%). Most of the crenarchaeotal and euryarchaeotal coral-associated 16S rRNA gene sequences from Heron Island (61%) and from the Gulf of Eilat (71%) were closely related (,or= 97%) to sequences ...
Enzymatic Degradation of PrPSc by a Protease Secreted from Aeropyrum pernix K1. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
Carlson, C.A., Morris, R., Parsons, R., Treusch, A.H., Giovannoni, S.J., Vergin, K. (2009). Seasonal dynamics of SAR11 populations in the euphotic and mesopelagic zones of the northwestern Sargasso Sea. The ISME Journal 3: 283-295.. Read More. ...
The three types of archaea are the crenarchaeota, the euryarchaeota and the korarchaeota. Archaea is a group of single-celled microorganisms that come in a variety of shapes and survive extreme...
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In taxonomy, the Korarchaeota are a phylum of the Archaea. The name is derived from the Greek noun koros or kore, meaning young man or young woman, and the Greek adjective archaios which means ancient. They are also known as Xenarchaeota. Korarchaeota is regarded as a phylum, which itself is part of the archaeal TACK superphylum which encompasses Thaumarchaeota, Aigarchaeota, Crenarchaeota and Korarchaeota. Analysis of their 16S rRNA gene sequences suggests that they are a deeply branching lineage that does not belong to the main archaeal groups, Crenarchaeota and Euryarchaeota. Analysis of the genome of one korarchaeote that was enriched from a mixed culture revealed a number of both Crenarchaeota- and Euryarchaeota-like features and supports the hypothesis of a deep-branching ancestry. The strain Korarchaeum cryptofilum was cultivated in an enrichment culture from a hot spring in Yellowstone National Park in USA 2008. The cells are long and needleshaped, which gave the species its ...
An evolutionary classification of genes from sequenced genomes that distinguishes between orthologs and paralogs is indispensable for genome annotation and evolutionary reconstruction. Shortly after multiple genome sequences of bacteria, archaea, and unicellular eukaryotes became available, an attempt on such a classification was implemented in Clusters of Orthologous Groups of proteins (COGs). Rapid accumulation of genome sequences creates opportunities for refining COGs but also represents a challenge because of error amplification. One of the practical strategies involves construction of refined COGs for phylogenetically compact subsets of genomes. New Archaeal Clusters of Orthologous Genes (arCOGs) were constructed for 41 archaeal genomes (13 Crenarchaeota, 27 Euryarchaeota and one Nanoarchaeon) using an improved procedure that employs a similarity tree between smaller, group-specific clusters, semi-automatically partitions orthology domains in multidomain proteins, and uses profile searches for
73, 6181-6191. , Sivan, A. and Kushmaro, A. (2008) Global distribution and diversity of coral-associated Archaea and their possible role in the coral holobiont nitrogen cycle. Environ. Microbiol. 10, 2979-2990. A. M. (2000) Crenarchaeota colonize terrestrial plant roots. Environ. Microbiol. 2, 495-505. , Wagner, M. and Schleper, C. (2010) Distinct gene set in two different lineages of ammonia-oxidizing archaea supports the phylum Thaumarchaeota. Trends Microbiol. 18, 331-340. , Wagner, M. W. (2008) Diversity and mode of transmission of ammonia-oxidizing archaea in marine sponges. In order to establish infection, resist host defences and re-emerge, Mtb must coordinate its metabolism with the in vivo environmental conditions and nutrient availability within the primary site of infection, the lung. Maintaining metabolic homeostasis for an intracellular pathogen such as Mtb requires a carefully orchestrated series of oxidation-reduction reactions, which, if unbalanced, generate oxidative or ...
TY - JOUR ID - 14670 AU - Barns,Susan M. AU - Delwiche,Charles F. AU - Palmer,Jeffrey D. AU - Pace,Norman R. T1 - Perspectives on archaeal diversity, thermophily and monophyly from environmental rRNA sequences. PY - 1996 UR - http://www.pnas.org/content/93/17/9188.abstract N2 - Phylogenetic analysis of ribosomal RNA sequences obtained from uncultivated organisms of a hot spring in Yellowstone National Park reveals several novel groups of Archaea, many of which diverged from the crenarchaeal line of descent prior to previously characterized members of that kingdom. Universal phylogenetic trees constructed with the addition of these sequences indicate monophyly of Archaea, with modest bootstrap support. The data also show a specific relationship between low-temperature marine Archaea and some hot spring Archaea. Two of the environmental sequences are enigmatic: depending upon the dataset and analytical method used, these sequences branch deeply within the Crenarchaeota, below the bifurcation ...
Before genomics techniques, the dark ocean was a black box, because microorganisms from this environment refuse to grow in research laboratories," said Ramunas Stepanauskas, a senior research scientist at Bigelow Laboratory and director of the Single Cell Genomics Center. "Now, using contemporary tools that were developed by our group, we can open this black box and understand who is living there, what they are doing, and how they are doing it.". The research behind this Science paper began with an effort to identify new groups of microscopic organisms in the mesopelagic zone. According to Pachiadaki, the previously accepted explanation for carbon capture in the dark ocean did not seem correct under close inspection. Archaea, a much more abundant group of microorganisms in the dark ocean, had been credited with doing most of the work, but the math just didnt add up. The team set out to discover the unidentified organisms that were the true champions of carbon dioxide capture in the vast dark ...
In recent years several laboratories have developed effective plating techniques, identifying genetic markers that do not target cell wall synthesis, fusing archaeal promoters with recombinant genes, and isolating native vectors and promiscuous nonnative vectors. This chapter focuses on tractable systems that are currently available for the Archaea. Due to fundamental differences between gene transfer systems for each archaeal branch, the chapter is divided into three inclusive sections covering the halophilic and methanogenic Euryarchaeota and the hyperthermophilic Crenarchaeota. Despite varying degrees of difficulty growing Archaea, all three systems are routinely used by laboratories conducting research on archaeal genetics and can be mastered by anyone with a fundamental knowledge of microbial genetic techniques. Under low oxygen tension, Halobacterium sp. NRC-1 induces purple membrane patches in the cell membrane and buoyant gas vesicles intracellularly, which increases the availability of light
Phytogeographers have long recognised the Sino-Japanese Floristic Region (SJFR) of East Asia as the worlds major centre of temperate plant diversity and endemism [1]. Much of the potential primary vegetation of this vast region is composed of warm-temperate deciduous (WTD) forest, as presently found scattered in mid-elevation subtropical (Central/South/East) China, predominant in low-elevation North China and the Korean Peninsula, and disjunctively distributed in the main islands of Japan [1, 2]. Fossil pollen analyses have previously indicated that during the Last Glacial Maximum [LGM: c. 21,000-18,000 yr before present (BP)], the habitat of East Asian WTD forests in the northern parts of their range (e.g., in North China and North Japan) contracted, mainly in response to increased aridification [3, 4]. However, palaeo-biome reconstructions suggest that these forests also expanded across the large expanses of continental shelf (c. 1 million km2) that emerged in the East China Sea (ECS) as a ...
Archéobactéries 0 questions One of the three domains of life (the others being BACTERIA and Eukarya), formerly called Archaebacteria under the taxon Bacteria, but now considered separate and distinct. They are characterized by: (1) the presence of characteristic tRNAs and ribosomal RNAs; (2) the absence of peptidoglycan cell walls; (3) the presence of ether-linked lipids built from branched-chain subunits; and (4) their occurrence in unusual habitats. While archaea resemble bacteria in morphology and genomic organization, they resemble eukarya in their method of genomic replication. The domain contains at least four kingdoms: CRENARCHAEOTA; EURYARCHAEOTA; NANOARCHAEOTA; and KORARCHAEOTA. ...
Lineage: cellular organisms; Archaea; TACK group; Crenarchaeota; Thermoprotei; Thermoproteales; Thermoproteaceae; Pyrobaculum; Pyrobaculum ...
The deep sea is an ambiguous term.If you are talking about demersal habitats, the edge of the continental shelf is usually taken as the upper boudary(=~ 200m) with the Bathyal Zone extending down to 2000m. The Bathyal can be further divided into upper(,1000m) and lower( , 1000m).Below 2000m, you have the Abyssal, which again has been arbitrarily divided into upper(2-3000m)and lower(,3000m).Habitats in the deep-sea trenches are in the Hadal Zone. In the Pelagic Realm,using the 200m isobath as the usual dividing point between coastal and oceanic water masses, you have the Epipelagic Zone which corresponds to the euphotic zone(the area of active photosynthesis) whch extends from the surface to 50-200m depending on productivity and water clarity. Then the Mesopelagic from the bottom of the Epipelagic to 1000m, the the Bathypelagic from 1000m to within tens of meters of the bottom wherein the Benthopelagic Zone is located. Brad Buran wrote: , Dear colleagues, , , I am currently preparing a ...
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Angelika works as a budtender in a medical dispensary and is her customers favorite. She loves to spend time with her dog Coco. In her free time she likes to cook with cannabis products and also give talks in the local communities about the benefits of medical cannabis.. ...
THIS DOCUMENT REVISION ADDS THE FULLY SUBSTANTIATED AMS5655 MATERIAL FOR THE RINGS AND THE HEAT TREAT REQUIREMENT. AMS3666 IS BEING REMOVED AS A SEAL MATERIAL AS NO SUPPLIER UTILIZES IT ON THIS SERIES. THE LUBRICATION IS BEING REVISED FROM A TRADE NAME TO AN INDUSTRY AVAILABLE SPECIFICATION MIL-PRF-23827 TYPE 1. ZINC NICKEL PER AMS2417 WILL BE INDICATED BY "E" SUFFIX. ADDS PASSIVATION IN ACCORDANCE WITH AMS2700, METHOD 1 (NITRIC ACID). CRES BALLS WILL BE INDICATED BY "T" SUFFIX.. ...
Proteome IDi ,p>The proteome identifier (UPID) is the unique identifier assigned to the set of proteins that constitute the ,a href="http://www.uniprot.org/manual/proteomes_manual">proteome,/a>. It consists of the characters UP followed by 9 digits, is stable across releases and can therefore be used to cite a UniProt proteome.,p>,a href=/help/proteome_id target=_top>More...,/a>,/p> ...
Japan is deporting 14 Chinese nationals arrested over a disputed island chain in the East China Sea, a Japanese official said Friday.
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Ill ping you. Its on my calendar to ping you this morning but I am on a conference call so may not get to pinging you until this afternoon. Ideally, I could ping you before my afternoon meeting but I might have to wait until after the meeting to ping you. I might even just say "screw it" and ping you during the actual meeting. I may have to postpone the ping until evening. Additional unforeseeable delays might mean I cant ping you until tomorrow. But Im going to ping you. I hope I can ping you today but if not, rest assured that a ping is nigh.. The ping might be one quick ping, like a finger snap. It might be one long ping, like the sound of a blue whale groaning but in ping form. It might be a series of pings in quick succession, like the rattle of a rattlesnake. It might be a series of pings drawn out over an hour or so, like the drumbeat of island natives prior to a human sacrifice. I might ping you loudly or I might ping you softly. It might be a mellifluous ping - like if Andrea ...
Endolithic microorganisms colonize the pores in exposed dolomite rocks in the Piora Valley in the Swiss Alps. They appear as distinct grayish-green bands about 1-8 mm below the rock surface. Based on environmental small subunit ribosomal RNA gene sequences, a diverse community driven by photosynthesis has been found. Cyanobacteria (57 clones), especially the genus Leptolyngbya, form the functional basis for an endolithic community which contains a wide spectrum of so far not characterized species of chemotrophic Bacteria (64 clones) with mainly Actinobacteria, Alpha-Proteobacteria, Bacteroidetes, and Acidobacteria, as well as a cluster within the Chloroflexaceae. Furthermore, a cluster within the Crenarchaeotes (40 clones) has been detected. Although the eukaryotic diversity was outside the scope of the study, an amoeba (39 clones), and several green algae (51 clones) have been observed. We conclude that the bacterial diversity in this endolithic habitat, especially of chemotrophic, nonpigmented ...
Every night across the worlds oceans, numerous marine animals arrive at the surface of the ocean to feed on plankton after an upward migration of hundreds of metres. Just before sunrise, this migration is reversed and the animals return to their daytime residence in the dark mesopelagic zone (at a depth of 200-1,000 m). This daily excursion, referred to as diel vertical migration (DVM), is thought of primarily as an adaptation to avoid visual predators in the sunlit surface layer1,2 and was first recorded using ship-net hauls nearly 200 years ago3. Nowadays, DVMs are routinely recorded by ship-mounted acoustic systems (for example, acoustic Doppler current profilers). These data show that night-time arrival and departure times are highly conserved across ocean regions4 and that daytime descent depths increase with water clarity4,5, indicating that animals have faster swimming speeds in clearer waters4. However, after decades of acoustic measurements, vast ocean areas remain unsampled and places for
Every night across the worlds oceans, numerous marine animals arrive at the surface of the ocean to feed on plankton after an upward migration of hundreds of metres. Just before sunrise, this migration is reversed and the animals return to their daytime residence in the dark mesopelagic zone (at a depth of 200-1,000 m). This daily excursion, referred to as diel vertical migration (DVM), is thought of primarily as an adaptation to avoid visual predators in the sunlit surface layer1,2 and was first recorded using ship-net hauls nearly 200 years ago3. Nowadays, DVMs are routinely recorded by ship-mounted acoustic systems (for example, acoustic Doppler current profilers). These data show that night-time arrival and departure times are highly conserved across ocean regions4 and that daytime descent depths increase with water clarity4,5, indicating that animals have faster swimming speeds in clearer waters4. However, after decades of acoustic measurements, vast ocean areas remain unsampled and places for
Affiliation:国立研究開発法人産業技術総合研究所,その他部局等,研究員, Research Field:Applied molecular and cellular biology,Applied materials science/Crystal engineering,Digestive surgery,Functional biochemistry,Laboratory medicine, Keywords:糖鎖,NMR,糖認識ドメイン,レクチン,蛋白質,Aeropyrum pernix K1,進化,Aminoacyl-tRNA synthetase,肝線維化,バイオマーカー, # of Research Projects:7, # of Research Products:27, Ongoing Project:動脈硬化性大動脈瘤の網羅的糖鎖解析による新たな疾患関連指標の探索
p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.,/p> ,p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.,/p> ,p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).,/p> ,p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x,sup>64,/sup> + x,sup>4,/sup> + x,sup>3,/sup> + x + 1. The algorithm is described in the ISO 3309 standard. ,/p> ,p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.,br /> ,strong>Cyclic redundancy and other checksums,/strong>,br /> ,a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993),/a>),/p> Checksum:i ...
Benthopelagic on shelf and upper slope (Ref. 34024). Larvae found in the epipelagic far offshore (Ref. 34024). Found in shallow lagoon and seaward reefs and occurs at depths of at least 220 m. Adults (30-90 cm) move to depths of 100-650 m (Ref. 58472). A nocturnal species, rarely seen for it lives in caves and crevices during the day and periodically emerges from cover at night to feed on crustaceans, mainly crabs, and fishes. Oviparous, with oval pelagic eggs floating in a gelatinous mass (Ref. 205). Utilized fresh and eaten steamed, pan-fried and baked (Ref. 9987). Also Ref. 58302. ...
Maria Faresjö bestämde sig tidigt för att arbeta med forskning. Efter avslutad grundutbildning vid Hälsohögskolan i Jönköping flyttade Maria till Linköping och påbörjade 1995 sina doktorandstudier vid avdelningen för Pediatrik vid Linköpings universitet. Maria försvarade 2000 sin avhandling "The importance of cell-mediated immunity for the development of type 1 diabetes" för medicine doktorsexamen. Syftet med avhandlingen var att studera hur immunförsvaret ser ut hos den som lider stor risk att insjukna i typ 1-diabetes. Maria studerade också vad som händer med immunförsvaret då man väl insjuknat i typ 1-diabetes ...
Field measurements of aerosols were conducted on Xiaoyangshan Island in the East China Sea in May 2006 to investigate the impact of anthropogenic air...
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FM Yang Jiechi says Tokyos purchase of islands in East China Sea is illegal and invalid and does not affect Beijings historical claim
TOKYO (AP) - A Japanese destroyer collided with a Chinese fishing boat in the East China Sea on Monday but no one was injured, the Defense Ministry said. The collision caused a hole in the destroyer Shimakaze above its waterline, but it was still able to move on its own, the ministry said. The cause of.... ...
Ke Ping is a medicine available in a number of countries worldwide. A list of US medications equivalent to Ke Ping is available on the Drugs.com website.
Seeing as I didnt get a response to my enquiry 3 months ago, and that the problem is still present, I would like to know: 10 minutes after I join a
This dataset contains the digitized treatments in Plazi based on the original journal article Zhang, Xiumei, Ji, Daode, Zhang, Qianqian, Li, Chenghua (2015): Description and phylogeny of a new prostomatid, Metacystis similis nov. spec. (Protista, Ciliophora) from the East China Sea. Zootaxa 4033 (4): 584-592, DOI: http://dx.doi.org/10.11646/zootaxa.4033.4.8 ...
Isoprenoid glycerol dialkyl glycerol tetraethers (GDGTs) are specific membrane lipids derived from archaea, one of the three domains of life. These lipids can be used as biomarkers in paleo-ecological studies. GDGTs can be analyzed by high performance liquid chromatography (HPLC)/mass spectrometry (MS). To quantify GDGTs, external standard curves were run monthly on the ... read more HPLC/MS. However, external standard curves represented a snapshot and do not adjust for changes during storage, dissolution and manipulation of samples or drifts in HPLC/MS conditions. To measure absolute GDGT abundances more accurately, we tested the use of a newly synthesized C46 GDGT as an internal standard. The accuracy in the determination of GDGT concentration improved significantly when using the internal standard (5% standard deviation) compared to that obtained with the monthly external standard curve (43% standard deviation). Thus, the new internal standard technique will greatly improve the accuracy of ...
A handy powerful visual ping test utility and IP scanner for system administrator to check network connection PingEasy is a graphical ping utility lets you easy to watch the states of network and test the connection speeds of various locations
Ping Monitor is an automatic tool for tracking connections with hosts, located in the local network and Internet. It detects connections statuses by sending regular pings and analyzing responses. If pings to host are failed a defined number of times in
Grade A Protozoa.. Diagram showing the primary grades and branches of the Animal Pedigree.. i ro m u s Coelomocoela.. yyo?o ?e Cren0Qh0ra ?ea?? ? 01¦?5?a i?. Anrh°30a portions Branch a. Parazoa.. Phylum I. Porifera (see Sponges).. Sub-phylum I. Calcarea.. Class. Calcarea.. Orders: Homocoela, Heterocoela. Sub-phylum 2. Non-Calcarea.. Class I. Myxospongida.. Order: Myxospongida. Class 2. Triaxonida (=Hexactinellida).. Orders: Amphidiscophora, Hexasterophora. Class 3. Tetraxonida.. Sub-Class I. Tetractinellida.. Orders: Homosclerophora, Astrophora, Sigmatophora. Sub-class 2. Lithistida.. No Orders.. Sub-class 3. Monaxonellida.. Orders: Astromonaxonellida, Sigmatomonaxonel - lida. Class 4. Euceratosa.. Order: Euceratosa. Branch b. Enterozoa.. Grade I. Enterocoela (see Coelentera).. Phylum 2. Hydromedusae or Hydrozoa.. Class. Hydromedusae, (q.v.).. Orders: Eleutheroblastea, Hydroidae seu Leptolinae (Sub-orders: Anthomedusae, Leptomedusae), Hydrocorallinae, Graptolitoidea Trachylinae (Suborders: ...
Remotely operated vehicle dive video recordings of deep-sea squid ink release were examined to determine species, ink release type, release depth, and accompanying behavior/s. Ink release was...
In this weeks issue of CLEAN ROOM, something is wrong-very wrong. As ordinary people go through their daily lives, bizarre things are happening everywhere-electricity going out, signals dropping, and most bizarre of all-the stars.
Mercone, D.; Thomson, J.; Abu-Zied, R.H.; Croudace, I.W.; Rohling, E.J.. 2001 High-resolution geochemical and micropalaeontological profiling of the most recent eastern Mediterranean sapropel. Marine Geology, 177 (1-2). 25-44. https://doi.org/10.1016/S0025-3227(01)00122-0 Full text not available from this repository ...
Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiofysik. Linköpings universitet, Institutionen för medicin och hälsa, Medicinsk radiologi. Östergötlands Läns Landsting, Centrum för kirurgi, ortopedi och cancervård, Radiofysikavdelningen US. Östergötlands Läns Landsting, Diagnostikcentrum, Röntgenkliniken i Linköping. Linköpings universitet, Hälsouniversitetet.ORCID-id: 0000-0001-8661-2232 ...
This week Laura and Paul enjoyed themselves while bringing all the hot news to you in bite size morsels. Enjoy Body controlled PCs [04:11] The OUTLOOK is good! [14:28] Win8 RTM and a very busy week
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Iiapnh, H.B., 2001. Description of a new mesopelagic fish Astronesthes tanibe (Astronesthidae, Stomiiformes) from the notal waters of the Atlantic and Pacific Oceans. Vopr. Ikhtiol. 41(3):416-419. (Ref. 44401 ...
same problem. ping ok : ping switzerland.eff.org PING pde.eff.org \(64.147.188.5\) 56\(84\) bytes of data. 64 bytes from pde.eff.org \(64.147.188.5\): icmp\_req=1 ttl=45 time=194 ms 64 bytes from pde.eff.org \(64.147.188.5\): icmp\_req=2 ttl=45 time=196 ...
莎呜]型 的男人能够客观且正确地掌握情势3得出合理的结论3并将此结论转换成可以打动人心的说法或做法3诉诸人》凡事喜欢探求隐藏在背后的真意3再加以分析3不但 能看透对方的状况3还能用言语巧妙诱导对方3是个沟通技巧高超的人士》常被人征询意见3并冷静地找出稳当 容易理解的解决方法3因而受人尊敬》总是与人保持适当的距离3维持君子之交》待人接物虽然和善3但那距离感有时也会让人感觉冷冰冰的》不喜欢与人有所争执3一旦同伴之间发生口角3[莎呜]男很懂得如何让双方不失颜面又圆满地平息纷争》只不过3容易配合对方的心情和步调3使得[莎呜]男经常成为善于妥协 八面玲珑的人3对于坚持自己的意见或真正的想法很不在行》为了实现自己的兴趣或目的3[莎呜]男 ...
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Benthic microbial ecosystems of Laguna La Brava, Salar de Atacama, a high altitude hypersaline lake, were characterized in terms of bacterial and archaeal diversity, biogeochemistry, (including O2 and sulfide depth profiles and mineralogy), and physicochemical characteristics. La Brava is one of several lakes in the Salar de Atacama where microbial communities are growing in extreme conditions, including high salinity, high solar insolation, and high levels of metals such as lithium, arsenic, magnesium, and calcium. Evaporation creates hypersaline conditions in these lakes and mineral precipitation is a characteristic geomicrobiological feature of these benthic ecosystems. In this study, the La Brava non-lithifying microbial mats, microbialites, and rhizome-associated concretions were compared to each other and their diversity was related to their environmental conditions. All the ecosystems revealed an unusual community where Euryarchaeota, Crenarchaeota, Acetothermia, Firmicutes and Planctomycetes
ID C4KE24_SULIK Unreviewed; 1008 AA. AC C4KE24; DT 07-JUL-2009, integrated into UniProtKB/TrEMBL. DT 07-JUL-2009, sequence version 1. DT 07-JUN-2017, entry version 43. DE RecName: Full=Tricorn protease homolog {ECO:0000256,PIRNR:PIRNR036421}; DE EC=3.4.21.- {ECO:0000256,PIRNR:PIRNR036421}; GN OrderedLocusNames=M164_0516 {ECO:0000313,EMBL:ACR41147.1}; OS Sulfolobus islandicus (strain M.16.4 / Kamchatka #3). OC Archaea; Crenarchaeota; Thermoprotei; Sulfolobales; Sulfolobaceae; OC Sulfolobus. OX NCBI_TaxID=426118 {ECO:0000313,EMBL:ACR41147.1, ECO:0000313,Proteomes:UP000001479}; RN [1] {ECO:0000313,EMBL:ACR41147.1, ECO:0000313,Proteomes:UP000001479} RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=M.16.4 / Kamchatka #3 {ECO:0000313,Proteomes:UP000001479}; RX PubMed=19435847; DOI=10.1073/pnas.0808945106; RA Reno M.L., Held N.L., Fields C.J., Burke P.V., Whitaker R.J.; RT "Biogeography of the Sulfolobus islandicus pan-genome."; RL Proc. Natl. Acad. Sci. U.S.A. 106:8605-8610(2009). CC -!- ...
The basic replication cycle of crenarchaeal viruses, including Fuselloviruses, has yet to be determined. There are, however, some trends which have been reported. It is thought that members of the Fuselloviridae family, as well as members of the Rudiviridae, Lipothrixviridae, and Guttaviridae families, associate with host cells by tail fibers which are present on one or both ends of the virion. Some viruses integrate their genome into the host cells chromosome, while others maintain their genomes as extrachromosomal elements. Assembly and release of most known crenarchaeal viruses, do not require cell lysis. Most crenarchaeal viruses, twith the exception of the Bicaudaviridae member ATV, appear to set up chronic infections, either continually producing virus particles or doing so in short events resulting in growth inhibition. These long-term chronic infections are thought to be an adaptation to the extremely hot and acidic environments crenarchaeal viruses inhabit. (source: Ortmann et al.) ...
Hello, a. I was on 192.168.1.88, when NOT connected to OpenVPN (10.8.0.1) I able to ping any hosts on 192.168.1.0/24 AFTER connected to OpenVPN (10.8.0.1) I am unable to ping any host on 192.168.1.0/24 b. there is no firewall turned on c. IP forwarding already enabled my server.ovpn are as follow: port 1194 proto udp dev tap ca ca.crt cert server.crt key server.key dh dh1024.pem server 10.8.0.0 255.255.255.0 ifconfig-pool-persist ipp.txt push route 192.168.1. 255.255.255.0 Please help Thanks & Regards Winanjaya -----Original Message----- From: [email protected] [mailto:[email protected]]On Behalf Of Klaus Thielking-Riechert Sent: Tuesday, September 18, 2007 2:59 PM To: [email protected] Subject: Re: [Openvpn-users] unable to ping internal LAN after connected toVPN On Tue, Sep 18, 2007 at 10:58:20AM +0700, Winanjaya wrote: , , I am unable to ping to internal LAN (192.168.1.0/24) after I connected , to OpenVPN (10.8.0.1) Well, ...
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Takikawa Tetsutaro , Morimoto Akihiko , Onitsuka Goh , WATANABE ATSUSHI , MOKU MASATOSHI Journal of oceanography 64(4), 585-594, 2008-08-01 参考文献24件 被引用文献1件 ...
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Goto Islands: Archipelago, northeastern East China Sea, lying off the western coast of Kyushu, Japan, and administratively part of Nagasaki ken (prefecture). The chain consists of more than...
3. If any of you have KEYWORDS (ex: Ping List) that you use to archive your Ping List topics, please post those here as well. I know several of you use them, and I can link those on your listing as well. :). Im reworking a couple of my lists, and adding *pingfile* keywords for a couple of them. Ill post here and/or FReepmail you with updates/changes, mostly in the military category, I reckon. Have you set a usual/common time, [quarterly, monthly, whatever for info updates? It would seem it needs to be an annual event at the very least, and probably a bit more frequent than that ...
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I really want a stronger hit. I want more than driving it up the third base line. I want variety. Everyone already knows I can beat a short line drive to third. I need to be able to shock them. Even if its only making the infield scramble...that will be good enough. Im one of the fastest on our team, I just need to make better hits. Do you hear the want in every ping? The frustration? Im tired of running out short plays. I want them to work for it. I want the outfield to know that Im beating them ...
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LiU E-PressThis webpage is hosted at Linköping University Electronic Press (LiU E-Press). Contact Us. [email protected] Linköping University Electronic ...
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Karlsson, Lars O ; Jönsson, Anders ; Liuba, Ioan Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för kardiovaskulär medicin ; Linköpings universitet, Medicinska fakulteten, Kardiologiska kliniken US ; Region Östergötland, Hjärt- och Medicincentrum, Kardiologiska kliniken ...
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Am Mi, 2.06.2010, 08:39, schrieb Boris: ,, Wenn das jemand liest, dann bitte auch eine Antwort per PM - ich kann ,, die Liste derzeit nicht empfangen. Warum auch immer. , , ping pong SCNR O ...
TY - JOUR. T1 - The hyperthermophilic cystathionine c-synthase from the aerobic crenarchaeon Sulfolobus tokodaii. T2 - Expression, purification, crystallization and structural insights. AU - Sato, Dan. AU - Shiba, Tomoo. AU - Mizuno, Sae. AU - Kawamura, Ayaka. AU - Hanada, Shoko. AU - Yamada, Tetsuya. AU - Shinozaki, Mai. AU - Yanagitani, Masahiko. AU - Tamura, Takashi. AU - Inagaki, Kenji. AU - Harada, Shigeharu. PY - 2017. Y1 - 2017. N2 - Cystathionine γ-synthase (CGS; EC 2.5.1.48), a pyridoxal 5′-phosphate (PLP)-dependent enzyme, catalyzes the formation of cystathionine from an l-homoserine derivative and l-cysteine in the first step of the transsulfuration pathway. Recombinant CGS from the thermoacidophilic archaeon Sulfolobus tokodaii (StCGS) was overexpressed in Escherichia coli and purified to homogeneity by heat treatment followed by hydroxyapatite and gel-filtration column chromatography. The purified enzyme shows higher enzymatic activity at 353 K under basic pH conditions compared ...
TY - JOUR. T1 - Growth, activity and temperature responses of ammonia-oxidizing archaea and bacteria in soil microcosms. AU - Tourna, Maria. AU - Freitag, Thomas E. AU - Nicol, Graeme W. AU - Prosser, James I. PY - 2008/5. Y1 - 2008/5. N2 - Ammonia oxidation, as the first step in the nitrification process, plays a central role in the global cycling of nitrogen. Although bacteria are traditionally considered to be responsible for ammonia oxidation, a role for archaea has been suggested by data from metagenomic studies and by the isolation of a marine, autotrophic, ammonia-oxidizing, non-thermophilic crenarchaeon. Evidence for ammonia oxidation by non-thermophilic crenarchaea in marine and terrestrial environments is largely based on abundance of bacterial and archaeal ammonia monooxygenase (amo) genes, rather than activity. In this study, we have determined the influence of temperature on the response of ammonia-oxidizing bacteria and archaea in nitrifying soil microcosms using two approaches, ...
The coupled nitrification-denitrification process plays a pivotal role in cycling and removal of nitrogen in aquatic ecosystems. In the present study, the communities of ammonia oxidizers and denitrifiers in the sediments of 2 basins (Guozhenghu Basin and Tuanhu Basin) of a large urban eutrophic lake (Lake Donghu) were determined using the ammonia monooxygenase subunit A (amoA) gene and the nitrite reductase gene. At all sites of this study, the archaeal amoA gene predominated over the bacterial amoA gene, whereas the functional gene for denitrification nirK gene far outnumbered the nirS gene. Spatially, compared with the Tuanhu Basin, the Guozhenghu Basin showed a significantly greater abundance of the archaeal amoA gene but less abundance of the nirK and nirS genes, while there was no significant difference of bacterial amoA gene copy numbers between the 2 basins. Unlike the archaeal amoA gene, the nirK gene showed a significant difference in community structure between the 2 basins. Archaeal ...
Exposure of Sulfolobus solfataricus to the DNA damaging agents UV-irradiation, bleomycin or mitomycin C induces cellular aggregation.[2] Other physical stressors, such as pH or temperature shift, do not induce aggregation, suggesting that induction of aggregation is caused specifically by DNA damage. Ajon et al.[3] showed that UV-induced cellular aggregation mediates chromosomal marker exchange with high frequency. Recombination rates exceeded those of uninduced cultures by up to three orders of magnitude. Frols et al.[2][4] and Ajon et al.[3] hypothesized that the UV-inducible DNA transfer process and subsequent homologous recombinational repair represents an important mechanism to maintain chromosome integrity. This response may be a primitive form of sexual interaction, similar to the more well-studied bacterial transformation that is also associated with DNA transfer between cells leading to homologous recombinational repair of DNA damage.[5] In another related species, Sulfolobus ...
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The Crenarchaeota also use the reverse Krebs cycle while the Euryarchaeota also use the reductive acetyl-CoA pathway. Carbon- ... 1997) Crenarchaeota. Version 1 January 1997. in The Tree of Life Web Project Walsby, A.E. (1980). "A square bacterium". Nature ... Some marine Crenarchaeota are capable of nitrification, suggesting these organisms may affect the oceanic nitrogen cycle, ... April 2007). "Putative ammonia-oxidizing Crenarchaeota in suboxic waters of the Black Sea: a basin-wide ecological study using ...
Crenarchaeota phy. nov.". In DR Boone; RW Castenholz. Bergey's Manual of Systematic Bacteriology Volume 1: The Archaea and the ... The Thermoprotei is a class of the Crenarchaeota. The currently accepted taxonomy is based on the List of Prokaryotic names ...
Qiu, X.X., Zhao, M.L., Han, D., Zhang, W.J., Dyall-Smith, M.L., Cui, H.L. (2013) "Taxonomic study of the genera Halogeometricum and Halosarcina: transfer of Halosarcina limi and Halosarcina pallida to the genus Halogeometricum as Halogeometricum limi comb. nov. and Halogeometricum pallidum comb. nov., respectively." Int J Syst Evol Microbiol. 63: 3915-3919 ...
Sejak pertengahan 1970-an, semakin banyak riset di bidang komparasi gen pada level molekular (dimulai dengan gen ribosomal RNA) sebagai faktor utama dalam klasifikasi; kemiripan genetik ditekankan terhadap penampilan luar dan perilaku. Tingakatan taxonomi, termasuk kingdom, adalah kelompok organisme dengan nenek moyang yang sama, baik monofilik (semua keturunan dari satu nenek moyang yang sama) atau parafilik (hanya beberapa keturunan dari satu nenek moyang yang sama). Berdasarkan studi RNA, Carl Woese membagi prokaryote (Kingdom Monera) menjadi dua kelompok, yaitu Eubacteria dan Archaebacteria, karena ada banyak perbedaan genetik antara dua kelompok ini. Eukaryote , seperti tumbuhan, fungi dan hewan mungkin tampak serupa, tetapi mirip dalam genetiknya di tingkatan molekular dibandingkan Eubacteria atau Archaebacteria. (Ditemukan juga bahwa eukaryote lebih dekat secara genetik dengan Archaebacteria daripada dengan Eubacteria.) Woese menciptakan sistem "tiga kingdom utama" atau "urkingdom".[8] In ...
Crenarchaeota dan Euryarchaeota.[3] Analisis genom satu Korarchaeota yang diperkaya dari kultur campuran mengungkapkan sejumlah ... fitur seperti-Crenarchaeota dan Euryarchaeota dan mendukung hipotesis dari keturunan bercabang awal.[4] ...
Noget forskning tyder på, at Euryarchaeota er tættere på eukaryote end på Crenarchaeota. Er dette tilfældet, vil riget Archaea ...
1997) Crenarchaeota. Version 1 January 1997. in The Tree of Life Web Project ... Sebuah superfilum - TACK - telah diusulkan yang mencakup Thaumarchaeota, Aigarchaeota, Crenarchaeota, dan Korarchaeota.[24] ... Crenarchaeota • Grylloblattidae • Halobacteria • Halobacterium • Helaeomyia petrolei • Lubang hidrotermal • Methanopyrus • Gua ... Faktor rumit termasuk klaim bahwa hubungan antara eukariota dan filum arkea Crenarchaeota lebih dekat daripada hubungan antara ...
1997) Crenarchaeota. Version 1 January 1997. in The Tree of Life Web Project ... Gupta R. S., Shami A. (2011). "Molecular signatures for the Crenarchaeota and the Thaumarchaeota". Antonie van Leeuwenhoek. 99 ... A superphylum - TACK - has been proposed that includes the Thaumarchaeota, Aigarchaeota, Crenarchaeota, and Korarchaeota.[24] ... Simon HM; Dodsworth JA; Goodman RM (October 2000). "Crenarchaeota colonize terrestrial plant roots". Environ. Microbiol. 2 (5 ...
Crenarchaeota e Euryarchaeota [5]. Parece que son un grupo basal de arqueas, xa que teñen cracterísitcas tanto de Crenarchaeota ...
TACK: acrónimo de Thaumarchaeota, Aigarchaeota, Crenarchaeota, Korarchaeota. *↑ DPANN: acrónimo de Diapherotrites, ... Crenarchaeota: Teñen varias características comúns e xeralmente son hipertermófilos, acidófilos, redutores e/ou oxidantes do ... Destes grupos, os Crenarchaeota e os Euryarchaeota son os máis intensamente estudados. A clasificación das arqueas é aínda ... As complicacións aumentan porque algúns opinan que as relacións entre os eucariotas e o filo arqueano das Crenarchaeota son ...
Os grupos II, III e IV son Euryarchaeota (o grupo I son Crenarchaeota). O grupo II é máis abondoso nas augas superficiais e ... É un dos grupos principais de arqueas e orixinalmente foi separado do grupo (Crenarchaeota) baseándose nas secuencias do ARNr. ...
Crenarchaeota possess neither a cell wall nor the FtsZ mechanism. They use a primitive version of the eukaryotic ESCRT-III ...
Crenarchaeota → Thermoproteaeota. *Thermotogae → Thermotogaeota. *Verrucomicrobia → Verrucomicrobaeota. Names after peopleEdit ...
In this scenario, the Asgard group is seen as a sister taxon of the TACK group, which comprises Crenarchaeota (formerly named ...
"Diversity of archaeosine synthesis in crenarchaeota". ACS Chem. Biol. 7 (2): 300-305. doi:10.1021/cb200361w. PMC 3289047 . PMID ...
... protein glycosylation in Crenarchaeota". Biochemical Society Transactions. 41 (1): 384-392. doi:10.1042/BST20120296. ISSN 0300- ...
Crenarchaeota), npr. nepravilne okrogle oblike pri rodu Sulfolobus ter tanki in kratki izrastki (filamenti) na površini pri ... Crenarchaeota). Ostala debla so le okvirno dorečena. Arheja Nanoarchaeum equitans denimo spada v samostojno deblo nanoarhej ( ... še posebej arheje iz debla Crenarchaeota.[99] Mnogo arhej biva tudi v sedimentih na morskem dnu.[100] ... the characteristic core glycerol dibiphytanyl glycerol tetraether membrane lipid of cosmopolitan pelagic crenarchaeota". J ...
Crenarchaeota Proteorhodopsin Uyemura, Angelos K. Hannides and Kristin. "Department of Oceanography at UH Manoa - Home". www. ...
However there are very few molecular markers that can distinguish this group of archaea from the phylum Crenarchaeota. A ... Additionally, a number of CSIs were found that are specific for different orders of Crenarchaeota- 3 CSIs for Sulfolobales, 5 ... Gupta, Radhey S.; Shami, Ali (2010). "Molecular signatures for the Crenarchaeota and the Thaumarchaeota". Antonie van ... The signatures described provide novel means for distinguishing Crenarchaeota and Thaumarchaeota, additionally they could be ...
Thermophilic archaea in the kingdom Crenarchaeota serve as natural hosts. There are currently nine species in this family, ...
"Mesophilic Crenarchaeota: proposal for a third archaeal phylum, the Thaumarchaeota." Nature Reviews Microbiology6.3 (2008): 245 ... gargensis allows scientists to expand this synthesis also to the Group I.1b Crenarchaeota. These discoveries indicate that ... https://www.researchgate.net/publication/5576617_Brochier-Armanet_C_Boussau_B_Gribaldo_S_Forterre_P_Mesophilic_Crenarchaeota_ ...
Brochier-Armanet, Céline; Boussau, Bastien; Gribaldo, Simonetta; Forterre, Patrick (2008). "Mesophilic crenarchaeota: Proposal ... symbiosum was sequenced and found to differ significantly from other members of the hyperthermophilic phylum Crenarchaeota. ...
Both species lack the genes ftsZ and minD, which has been characteristic of sequenced Crenarchaeota. They also code for citrate ... a model organism of the Crenarchaeota". Journal of Bacteriology. 187 (14): 4992-9. doi:10.1128/JB.187.14.4992-4999.2005. PMC ...
... is an archaeal species belongs to the kingdom Crenarchaeota. Sulfolobus shibatae was described for the ...
Crenarchaeota e Euryarchaeota [5]. Parece que son un grupo basal de arqueas, xa que teñen cracterísitcas tanto de Crenarchaeota ...
Archaea; Crenarchaeota; Thermoprotei; Desulfurococcales; Pyrodictiaceae Species. Hyperthermus butylicus Description and ...
Archaea, Crenarchaeota, Ignicoccus, chemolithoautotroph, Zellbiologie, Energiekonservierung, A1AO ATP-Synthase, H2:Schwefel- ...
... arent just for microbiologists.... These unusual properties of Crenarchaeota have attracted the attention of a ... Crenarchaeota Sue Barns and Siegfried Burggraf Click on an image to view larger version & data in a new window ... For more information about low-temperature Crenarchaeota, have a look at the CrenPage, a Web site of Norm Paces lab at UC ... The kingdom Crenarchaeota has the distinction of including microbial species with the highest known growth temperatures of any ...
Labor Becker, Olgemöller & Kollegen, Munich, Germany (Crenarchaeota) ToL Media Contributors for Crenarchaeota. * Sue Barns Los ... ToL Scientific Contributors for Crenarchaeota. * Sue Barns Los Alamos National Laboratory, New Mexico, USA (Crenarchaeota) ... Other Crenarchaeota biologists and enthusiasts. * Jon Moore Florida Atlantic University (Acantheae, Acanthopterygii, Acanthus ... Crenarchaeota, Cryptalyra, Cryptomycocolax, Cryptoteuthis brevibracchiata, Cystobasidiomycetes, Dacrymycetales, Delitschiaceae ...
The Crenarchaeota, one of the meanwhile four kingdoms of the archaeal domain, consist primarily of hyperthermophiles, thriving ... The Crenarchaeota, one of the meanwhile four kingdoms of the archaeal domain, consist primarily of hyperthermophiles, thriving ... Phylogenetic tree derived from 16S rRNA sequences data for the Crenarchaeota and some representatives of the Euryarchaeota. The ... Hügler M, Huber H, Stetter KO and Fuchs G (2003) Autotrophic carbon dioxide fixation pathways in archaea (Crenarchaeota). ...
Search Species2000 page for Crenarchaeota MicrobeWiki page for Crenarchaeota LPSN page for Crenarchaeota Crenarchaeota from the ... PubMed references for Crenarchaeota PubMed Central references for Crenarchaeota Google Scholar references for Crenarchaeota ... Crenarchaeota phy. nov.". In DR Boone, RW Castenholz. Bergeys Manual of Systematic Bacteriology Volume 1: The Archaea and the ... The Crenarchaeota (Greek for "spring old quality" as specimens were originally isolated from geothermally heated sulfuric ...
Derived from the gene content, T. tenax is a representative member of the Crenarchaeota. The organism is strictly anaerobic and ... The Complete Genome Sequence of Thermoproteus tenax: A Physiologically Versatile Member of the Crenarchaeota. ... which is not accompanied by a distinct increase of genome size or information density as compared to other Crenarchaeota. T. ...
The kingdom Crenarchaeotais one of the two kingdoms that comprise the archaeal domain. The members of the Crenarchaeota that ... positions within the thermophilic Crenarchaeota, and positions ancestral to the Crenarchaeota (3). ... The nonthermophilicCrenarchaeota accounted for as much as 1.42% ± 0.42% of the 16S rRNA in the soils analyzed. ... PCR amplification and cloning of Crenarchaeota 16S rDNA.DNA purified from soil was used as a template for PCR. The archaea- ...
... Dataset GBIF Backbone Taxonomy Rank PHYLUM Classification. kingdom Archaea phylum Crenarchaeota Name. Homonyms. ... Crenarchaeota. Common names. eocytes in language.. Bibliographic References. * Ruggiero M, Gordon D, Bailly N, Kirk P, Nicolson ...
Group I.1a Crenarchaeota dominated at two sites, while group I.3b Crenarchaeota sequences were most abundant at a third site. ... Group I.1a Crenarchaeota dominated at two sites, while group I.3b Crenarchaeota sequences were most abundant at a third site. ... Nelson, Katelyn A.; Moin, Nicole S.; and Bernhard, Anne E., "Archaeal Diversity and the Prevalence of Crenarchaeota in Salt ...
Crenarchaeota ya iku filum kang kalebu domain Archaea.[2] Mikroorganisme kang kalebu filum kasebar ing habitat kang panas ... Akeh-akèhé Crenarchaeota hipertermofil diisolasi saka lemah panas geotermal lan banyu kang ngedhut sulfur lan sulfida.[3] ... Mayoritas Crenarchaeota hipertermofil ditemokaka ing laladan nétral atawa kanthi tingkatake keasaman sedang, lan spésies liyané ... banget utawa atis banget kaya ta banyu umub lan banyu es.[2] Kabèh Crenarchaeota kang kasil dikultur nganti seprene minangka ...
Crenarchaeota[edit]. Crenarchaeota consists of these following divisions:. a. Hyperthermophiles: are thermophilic (love hot ... Crenarchaeota and Euryarchaeota are the only two that have been heavily researched. The other two other groups have been ... Under the archaea group, there are four phyla based on rRNA trees: Crenarchaeota, Euryarchaeota, Korarchaeota, and ... Some place eukaryotes closer to Eurarchaeota than Crenarchaeota are, although the membrane chemistry suggests otherwise. ...
S-layers exclusive to the Crenarchaeota have also been described, which are composed of two proteins. Information regarding S- ... S-layers exclusive to the Crenarchaeota have also been described, which are composed of two proteins. Information regarding S- ... The hexagonal lattice type is dominant within the phylum Euryarchaeota, while in the Crenarchaeota this feature is mainly ... The hexagonal lattice type is dominant within the phylum Euryarchaeota, while in the Crenarchaeota this feature is mainly ...
By contrast Crenarchaeota encode no chemotaxis-like proteins but are nevertheless able to connect external stimuli to ... results represent the first step in understanding the networks that underlie regulation of cellular motility in Crenarchaeota ...
Exposure of Sulfolobus solfataricus to the DNA damaging agents UV-irradiation, bleomycin or mitomycin C induces cellular aggregation.[2] Other physical stressors, such as pH or temperature shift, do not induce aggregation, suggesting that induction of aggregation is caused specifically by DNA damage. Ajon et al.[3] showed that UV-induced cellular aggregation mediates chromosomal marker exchange with high frequency. Recombination rates exceeded those of uninduced cultures by up to three orders of magnitude. Frols et al.[2][4] and Ajon et al.[3] hypothesized that the UV-inducible DNA transfer process and subsequent homologous recombinational repair represents an important mechanism to maintain chromosome integrity. This response may be a primitive form of sexual interaction, similar to the more well-studied bacterial transformation that is also associated with DNA transfer between cells leading to homologous recombinational repair of DNA damage.[5] In another related species, Sulfolobus ...
... some signatures shared with Crenarchaeota were noticed in the 16S RNA sequence of M. kandleri (13). In contrast, analysis of ... Crenarchaeota: Aeropyrum pernix (Aper), Sulfolobus solfataricus (Sulso); bacteria: Thermotoga maritima (Thema), Deinococcus ...
Crenarchaeota: Aeropyrum pernix (Aper), Sulfolobus solfataricus (Sulso); bacteria: Thermotoga maritima (Thema), Deinococcus ...
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Crenarchaeota * Euryarchaeota containing groups. * Archaea * Life on Earth random page. Skip to main content Go to quick links ...
Phylum Crenarchaeota. Extreme thermophiles. Characteristics:. Microorganisms that live and grow in extremely hot environments ...
The above illustration of Earths sea surface temperature was obtained from two weeks of infrared observations by the Advanced Very High Resolution Radiometer (AVHRR), an instrument on board NOAA-7 during July 1984. Temperatures are color coded with red being warmest and decreasing through oranges, yellows, greens, and blues. Temperature patterns seen in this image are the result of many influences, including the circulation of the ocean, surface winds, and solar heating. The image indicates a large pool of warm water in the Western Pacific and a tongue of relatively cold water extending along the Equator westward from South America. Every few years, there occurs an interrelated set of changes in the global atmospheric and oceanic circulation known as an El Nino in which the region of warm equatorial water in the West extends eastward across the Pacific and blankets the cool, productive regions along the coast of South America. Fish, birds, and marine mammals that depend upon the normally ...
Crenarchaeota; Thermoprotei; Sulfolobales; Sulfolobaceae; OC Sulfolobus. OX NCBI_TaxID=426118 {ECO:0000313,EMBL:ACR40780.1, ECO ...
Qiu, X.X., Zhao, M.L., Han, D., Zhang, W.J., Dyall-Smith, M.L., Cui, H.L. (2013) "Taxonomic study of the genera Halogeometricum and Halosarcina: transfer of Halosarcina limi and Halosarcina pallida to the genus Halogeometricum as Halogeometricum limi comb. nov. and Halogeometricum pallidum comb. nov., respectively." Int J Syst Evol Microbiol. 63: 3915-3919 ...
Crenarchaeota; Thermoprotei; Sulfolobales; Sulfolobaceae; OC Sulfolobus. OX NCBI_TaxID=426118 {ECO:0000313,EMBL:ACR40855.1, ECO ...
  • En 1970, Thomas D. Brock, da Universidade de Wisconsin, descubriu a Thermoplasma , unha arquea termoacidófila e en 1972 a Sulfolobus , unha hipertermófila . (wikipedia.org)
  • The structure and evolution of the ribosomal proteins encoded in the spc operon of the archaeon (Crenarchaeota) Sulfolobus acidocaldarius. (ebi.ac.uk)
  • We determined the diversity and abundance of the nonthermophilic members of the Crenarchaeota in soil samples taken from cultivated and uncultivated fields located at the Kellogg Biological Station's Long-Term Ecological Research site (Hickory Corners, Mich.). Clones were generated from 16S rDNA that was amplified by using broad-specificity archaeal PCR primers. (asm.org)
  • Phylogenetic analyses included nonthermophilic crenarchaeotal sequences found in public databases and revealed that the nonthermophilic Crenarchaeota group is composed of at least four distinct phylogenetic clusters. (asm.org)
  • The nonthermophilic Crenarchaeota accounted for as much as 1.42% ± 0.42% of the 16S rRNA in the soils analyzed. (asm.org)
  • It is presumed that these members of the Crenarchaeota are nonthermophilic based on the environments in which they have been found (temperatures, −1.5 to 32°C), their phylogenetic distance from the thermophilic members of the Crenarchaeota , and the low G+C contents of their 16S rDNA (51 to 58%) compared to the G+C contents of the thermophilic organisms (60 to 69%) ( 10 , 16 , 28 ). (asm.org)
  • In addition, the abundance of nonthermophilic Crenarchaeota in the marine water column and in the oxic region of freshwater sediments suggests that certain members of the nonthermophilic Crenarchaeota are tolerant to oxygen ( 11 , 19 ). (asm.org)
  • Members of the nonthermophilic Crenarchaeota have recently been identified in soils, but the abundance and significance of these organisms in soil microbial communities have not been assessed ( 5 , 7 , 17 , 37 ). (asm.org)
  • Nonthermophilic members of the kingdom Crenarchaeota are one of the more abundant, widespread, and frequently recovered prokaryotic groups revealed by molecular phylogenetic approaches. (asm.org)
  • Since growth temperature and habitat characteristics vary so widely between nonthermophilic and the hyperthermophilic Crenarchaeota , these groups are likely to differ greatly with respect to specific physiology and metabolism. (asm.org)
  • Recent analyses of genetic sequences obtained directly from environomental samples, however, indicate the existence of low temperature Crenarchaeota, which have not yet been cultivated. (tolweb.org)
  • Within the last several years, molecular techniques have uncovered numerous 16S rRNA gene (rDNA) sequences which represent a unique and globally distributed lineage of the kingdom Crenarchaeota that is phylogenetically distinct from currently characterized crenarchaeotal species. (asm.org)
  • This collection of more than 100 16S rDNA sequences represents a diverse and globally distributed group of organisms that belong to the kingdom Crenarchaeota but are phylogenetically distinct from the thermophilic Crenarchaeota . (asm.org)
  • Group I.1a Crenarchaeota dominated at two sites, while group I.3b Crenarchaeota sequences were most abundant at a third site. (conncoll.edu)
  • And by comparing the C. symbiosum genome sequence with sequences extracted from environmental samples collected from diverse ocean habitats, they show that planktonic Crenarchaeota share many of the same genetic components. (rxpgnews.com)
  • How did the genes identified here compare with planktonic Crenarchaeota gene sequences? (rxpgnews.com)
  • The members of the Crenarchaeota that have been isolated to date are extreme thermophiles that have optimal growth temperatures of more than 80°C. With certain exceptions, these extreme thermophiles are obligate anaerobes with sulfur-dependent metabolisms. (asm.org)
  • The kingdom Crenarchaeota has the distinction of including microbial species with the highest known growth temperatures of any organisms. (tolweb.org)
  • Until recently, the Crenarchaeota were thought to include an evolutionarily closely related group of organisms, characterized by an extremely thermophilic, sulfur-metabolizing phenotype. (asm.org)
  • Uncultivated organisms in the subdivision Crenarchaeota are postulated to be the most abundant ammonia -oxidizing organisms in soils and to account for a large proportion (roughly 20 percent) of the microorganisms present in the picoplankton in the world's oceans. (britannica.com)
  • Marine Crenarchaeota represent an abundant component of oceanic microbiota with potential to significantly influence biogeochemical cycling in marine ecosystems. (uib.no)
  • However, recent metagenomic studies have revealed the existence of unique ammonia monooxygenase α-subunit (amoA) genes derived from uncultivated, nonextremophilic Crenarchaeota. (pnas.org)
  • Several lines of evidence suggest that planktonic Crenarchaeota, significant components of the marine ecosystem, assimilate carbon in this way and that they might use ammonia (NH3) as an energy source, since they inhabit ammonia-rich Antarctic waters and are associated with high nitrite concentrations. (rxpgnews.com)
  • The Kingdom Crenarchaeota has been defined phylogenetically, based on comparative molecular sequence analyses, and its members are therefore primarily defined by sequence similarity. (tolweb.org)
  • Derived from the gene content, T. tenax is a representative member of the Crenarchaeota. (wur.nl)
  • To search for genetic clues to carbon and energy metabolism in Crenarchaeota, the researchers extracted C. symbiosum DNA from its host sponge and constructed a DNA library for sequencing the symbiont s genome. (rxpgnews.com)
  • Nitrifying Crenarchaeota are important to global carbon and nitrogen cycling. (coursehero.com)
  • The crenarchaeota are able to endure both extreme temperatures and extreme acidity. (reference.com)
  • Some place eukaryotes closer to Eurarchaeota than Crenarchaeota are, although the membrane chemistry suggests otherwise. (wikibooks.org)