A kingdom in the domain ARCHAEA comprised of thermoacidophilic, sulfur-dependent organisms. The two orders are SULFOLOBALES and THERMOPROTEALES.
Deoxyribonucleic acid that makes up the genetic material of 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.
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.
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.
Ribonucleic acid in archaea having regulatory and catalytic roles as well as involvement in protein synthesis.
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.
The functional genetic units of ARCHAEA.
The genetic complement of an archaeal organism (ARCHAEA) as represented in its DNA.
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.
A family of SULFOLOBALES consisting of aerobic or facultatively anaerobic chemolithotrophic cocci, usually occurring singly. They grow best at a pH of about 2.
The relationships of groups of organisms as reflected by their genetic makeup.
A family of THERMOPROTEALES consisting of anaerobic, thermoacidophilic thin rods found in solfataric 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.
Constituent of 30S subunit prokaryotic ribosomes containing 1600 nucleotides and 21 proteins. 16S rRNA is involved in initiation of polypeptide synthesis.
A kingdom of hyperthermophilic ARCHAEA found in diverse environments.
Proteins found in any species of archaeon.
The salinated water of OCEANS AND SEAS that provides habitat for marine organisms.
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 sequences encoding RIBOSOMAL RNA and the segments of DNA separating the individual ribosomal RNA genes, referred to as RIBOSOMAL SPACER DNA.
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.
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)
The variety of all native living organisms and their various forms and interrelationships.
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.
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.
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.
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)
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.
A multistage process that includes cloning, physical mapping, subcloning, determination of the DNA SEQUENCE, and information analysis.
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.
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.
The presence of bacteria, viruses, and fungi in water. This term is not restricted to pathogenic organisms.
Any of the processes by which cytoplasmic or intercellular factors influence the differential control of gene action in archaea.
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.
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)
The study of the origin, structure, development, growth, function, genetics, and reproduction of organisms which inhabit the OCEANS AND SEAS.
The presence of bacteria, viruses, and fungi in the soil. This term is not restricted to pathogenic organisms.
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)
Water containing no significant amounts of salts, such as water from RIVERS and LAKES.

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)

April 2007). "Putative ammonia-oxidizing Crenarchaeota in suboxic waters of the Black Sea: A basin-wide ecological study using ... ISBN 978-0-387-24143-2. Barns S, Burggraf S (1997). "Crenarchaeota". The Tree of Life Web Project. Version 01 January 1997. ... Gupta RS, Shami A (February 2011). "Molecular signatures for the Crenarchaeota and the Thaumarchaeota". Antonie van Leeuwenhoek ... Simon HM, Dodsworth JA, Goodman RM (October 2000). "Crenarchaeota colonize terrestrial plant roots". Environmental Microbiology ...
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 ... NCBI taxonomy page for Crenarchaeota Search Tree of Life taxonomy pages for Crenarchaeota ... Crenarchaeota phy. nov.". In DR Boone, RW Castenholz (eds.). Bergey's Manual of Systematic Bacteriology Volume 1: The Archaea ...
Crenarchaeota phy. nov.". In DR Boone; RW Castenholz (eds.). Bergey's Manual of Systematic Bacteriology Volume 1: The Archaea ...
It has been proposed that the TACK clade be classified as Crenarchaeota and that the traditional "Crenarchaeota" ( ... Thermoproteota (formerly Crenarchaeota). It is the best known edge and the most abundant archaea in the marine ecosystem. They ... TACK is a group of archaea acronym for Thaumarchaeota (now Nitrososphaerota), Aigarchaeota, Crenarchaeota (now Thermoproteota ...
"Diversity of archaeosine synthesis in crenarchaeota". ACS Chemical Biology. 7 (2): 300-5. doi:10.1021/cb200361w. PMC 3289047. ...
Meyer, Benjamin H.; Albers, Sonja-Verena (2013-02-01). "Hot and sweet: protein glycosylation in Crenarchaeota". Biochemical ...
Gupta, Radhey S.; Shami, Ali (2010). "Molecular signatures for the Crenarchaeota and the Thaumarchaeota". Antonie van ... formerly Crenarchaeota). A detailed phylogenetic study using the CSI approach was conducted to distinguish these phyla in ...
... is a mesophilic genus of ammonia-oxidizing Crenarchaeota. The first Nitrososphaera organism was discovered in ...
Ubiquitin-related protein called Urm1 is also present in Crenarchaeota. DNA replication system (GINS proteins) in Crenarchaeota ... The first eukaryotic protein identified was actin and actin-related proteins (Arp) 2 and 3 in Crenarchaeota. The implication is ... The conclusion was that eukaryotes evolved from archaea, specifically Crenarchaeota (eocytes) and the results "favor a topology ... which was renamed Crenarchaeota as a phylum of Archaea but corrected as Thermoproteota in 2021) are one of them. They ...
"Mesophilic Crenarchaeota: Proposal for a Third Archaeal Phylum, the Thaumarchaeota." Nature Reviews Microbiology 6, no. 3 ( ... a Cultivated Representative of the Cosmopolitan Mesophilic Group I Crenarchaeota". Applied and Environmental Microbiology. 74 ( ... a Cultivated Representative of the Cosmopolitan Mesophilic Group I Crenarchaeota". Organic Geochemistry. 41: 930-934. doi: ...
"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 C, Boussau B, Gribaldo S, Forterre P (March 2008). "Mesophilic Crenarchaeota: Proposal for a third archaeal ... formerly Crenarchaeota). Three described species in addition to C. symbiosum are Nitrosopumilus maritimus, Nitrososphaera ...
It was named for the phylum Crenarchaeota (now Thermoproteota), to which the ammonia-oxidizing pelagic archaea that produce ... Brochier-Armanet C, Boussau B, Gribaldo S, Forterre P (March 2008). "Mesophilic Crenarchaeota: proposal for a third archaeal ... formerly classified as the Marine Group 1 Crenarchaeota). It has been confirmed to be produced by pure cultures of the pelagic ... a cultivated representative of the cosmopolitan mesophilic group I Crenarchaeota". Applied and Environmental Microbiology. 74 ( ...
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 ...
Currently in this list there are 39 genomes belonging to Crenarchaeota species, 105 belonging to the Euryarchaeota, 1 genome ... July 2005). "The genome of Sulfolobus acidocaldarius, a model organism of the Crenarchaeota". Journal of Bacteriology. 187 (14 ... 2011). "The complete genome sequence of Thermoproteus tenax: a physiologically versatile member of the Crenarchaeota". PLOS ONE ... complete genome sequence of Staphylothermus marinus reveals differences in sulfur metabolism among heterotrophic Crenarchaeota ...
... a model organism of the Crenarchaeota". Journal of Bacteriology. 187 (14): 4992-9. doi:10.1128/jb.187.14.4992-4999.2005. PMC ...
... formerly Crenarchaeota) being the most common form of life in the ocean, dominating ecosystems below 150 m in depth. These ... "Distribution of Membrane Lipids of Planktonic Crenarchaeota in the Arabian Sea". Appl. Environ. Microbiol. 68 (6): 2997-3002. ...
... a model organism of the Crenarchaeota". Journal of Bacteriology. 187 (14): 4992-9. doi:10.1128/JB.187.14.4992-4999.2005. PMC ...
Thermoproteota (formerly Crenarchaeota) possess neither a cell wall nor the FtsZ mechanism. They use a primitive version of the ...
For example, "crenarchaeal virus" denotes viruses of the Archaea phylum Thermoproteota (formerly Crenarchaeota). The terms " ...
Species that perform AOM include Archaea of phylum Thermoproteota (formerly Crenarchaeota) and Thermococcus. Production of ...
Archaeal phylogenetic classes Nitrososphaerota (formerly Thaumarchaeota), Thermoproteota (formerly Crenarchaeota), " ...
2011). "The Complete Genome Sequence of Thermoproteus tenax: A Physiologically Versatile Member of the Crenarchaeota". PLOS ONE ... as in all members of the Crenarchaeota, the membranes are predominated by the 40-carbon lipids that span the entire membrane. ...
... complete genome sequence of Staphylothermus marinus reveals differences in sulfur metabolism among heterotrophic Crenarchaeota ...
... formerly Crenarchaeota). The presence and relative abundance of archaea in various environments suggest that they likely play ...
More recent metagenomic studies and cultivation approaches have revealed that some Thermoproteota (formerly Crenarchaeota) ... "Novel genes for nitrite reductase and Amo-related proteins indicate a role of uncultivated mesophilic crenarchaeota in nitrogen ...
... formerly Marine Group 1 Crenarchaeota). The membrane lipids of Nitrososphaerota are composed of glycerol dialkyl glycerol ... "Temperature-dependent variation in the distribution of tetraether membrane lipids of marine Crenarchaeota: Implications for ...
In Crenarchaeota, this motor complex might be surrounded by a scaffold formed by a ring composed of ArlX. In Euryarchaeotes, ... The prepilin peptidase (called PibD in crenarchaeota and ArlK (formerly FlaK) in euryarchaeota) is essential for the maturation ... ArlX is only found in Crenarchaeota and ArlCDE (which can exist as individual proteins or as fusion proteins) in Euryarchaeotes ...
With it they classified eocytes as archaea under the phylum Crenarchaeota (which was reclassifed as Thermoproteota in 2021). ... Crenarchaeota and Korarchaeota) archaea but not in other archaea. These indicate that eukaryotes can be merged into archaea. ...
... formerly called Crenarchaeota). thermocline A layer within a body of water or air where the temperature changes rapidly with ...
Brochier-Armanet, C., Boussau, B., Gribaldo, S. & Forterre, P. Mesophilic Crenarchaeota: proposal for a third archaeal phylum, ... Identification of an ortholog of the eukaryotic RNA polymerase III subunit RPC34 in Crenarchaeota and Thaumarchaeota suggests ... Orthologs of the small RPB8 subunit of the eukaryotic RNA polymerases are conserved in hyperthermophilic Crenarchaeota and " ...
Tegundir innan fylkingar Crenarchaeota fundust í öllum þessum sýnum, en tegundir innan Euryarchaeota voru bundnar við sýni úr ... Species from the Crenarchaeota group were found in the samples, but species belonging to the Euryarchaeota group were only ... Species belonging to Crenarchaeota were found in all six areas, Euryarchaeota were found in Vonarskarð and Þeistareykir, ... Archaeal species in the samples belonged to both Crenarchaeota and Euryarchaeota. The calculated biodiversity index for ...
Crenarchaeota, Cyanobacteria, Chlorobi and Spirochaetes; from 7 to 9 bps in Bacteroidetes; from 9 to 11 bps in Synergistetes; ...
Crenarchaeota - Preferred Concept UI. M0029115. Scope note. A kingdom in the domain ARCHAEA comprised of thermoacidophilic, ... Crenarchaeota. Scope note:. Reino del dominio ARCHAEA constituido por organismos termoacidofílicos, dependientes del azufre. ...
Crenarchaeota (2) * Lípidos de la Membrana (2) *Mostrar más.... Tipo de estudio * Prognostic_studies (5) ...
In the chemolithotrophic, thermophilic, acidophilic crenarchaeota, Acidianus ambivalens, the essential residues comprising the ...
... has lost most of the genes associated with a heterotrophic metabolism that is characteristic of most of the Crenarchaeota. A ...
DNA Polymerase Facilitating Error-Prone DNA Damage Tolerance in Crenarchaeota. *Posted on August 22, 2020. ... A Distinctive B-Household DNA Polymerase Facilitating Error-Susceptible DNA Harm Tolerance in Crenarchaeota Sulfolobus ...
General Information: Hyperthermophilic crenarchaeota. Thermofilum pendens is a hetrotrophic hyperthermophile that has been ... Host Lineage: Thermofilum pendens; Thermofilum; Thermofilaceae; Thermoproteales; Crenarchaeota; Archaea. ...
Displaying Genome 1 - 50 of 2989 in total ...
Crenarchaeota (0/46, 0 hit, 0 weak hit) Thermoprotei Acidilobales Acidilobaceae Acidilobus Acidilobus saccharovorans (strain ...
Mesophilic Crenarchaeota: proposal for a third archaeal phylum, the Thaumarchaeota. C Brochier-Armanet, B Boussau, S Gribaldo, ...
... and Crenarchaeota (in the rural creek). The aquatic microbial diversity was substantially reduced in water with severe faecal ... and Crenarchaeota (in the rural creek). The aquatic microbial diversity was substantially reduced in water with severe faecal ...
Foram detectados apenas dois filos de Archaea nos cinco manguezais, Crenarchaeota e Euryarchaeota. O manguezal do rio Ceará se ... Only two phyla of Archaea were detected in the five mangroves, Crenarchaeota and Euryarchaeota. Interestingly, Ceará mangrove ...
Members of Crenarchaeota that can perform ammonia oxidation have been also found in several man-made environments. Normally, ... Up to now, AOA appear not to form a monophyletic clade but rather to belong to different lineages within the Crenarchaeota. The ... 2006b) open the possibility for a potential role in autotrophic oxidation of ammonia for the highly abundant Crenarchaeota ... Nicol GW, Schleper C (2006) Ammonia-oxidising Crenarchaeota: important players in the nitrogen cycle? Trends Microbiol 14:207- ...
This is supported due that the ribosomes in the Crenarchaeota are more related to those of eukaryotes than to bacteria or ... Based on Eocyte hypothesis eukaryotes originated from prokaryotic Crenarchaeota, a phylum within the archaea. ...
Crenarchaeota ». *Thermoprotei ». *Desulfurococcales ». *unclassified Desulfurococcales ». *Ignisphaera ». *Ignisphaera ...
CO2 fixation in Crenarchaeota. *pyruvate fermentation to butanoate. *pyruvate fermentation to butanol I ...
Analysis of the non-thermophilic Crenarchaeota phylogeny in the swamp soil of Zoige plateau wetland. A study on early tolerance ...
fEuryarchaeota and Crenarchaeota are in the kingdom Archaea. The rest of the phyla are in the kingdom Bacteria. ...
miscellaneous Crenarchaeota group-5b. NCBI BLAST name: archaea. Rank: clade. Genetic code: Translation table 11 (Bacterial, ...
Crenarchaeota, and Korarchaeota; UBA: ubiquitin like modifier activating enzyme; UFM: ubiquitin fold modifier; URM: ubiquitin ...
Crenarchaeota B02.075.200 Desulfurococcales B02.075.200.500 Desulfurococcaceae B02.075.200.500.050 Aeropyrum B02.075.200.650 ...
Phylum Crenarchaeota (organism) {431134006 , SNOMED-CT } Parent/Child (Relationship Type) Class Thermoprotei (organism) { ...
Crenarchaeota Preferred Term Term UI T058345. Date01/01/1999. LexicalTag NON. ThesaurusID NLM (1998). ... Crenarchaeota Preferred Concept UI. M0029115. Registry Number. txid28889. Scope Note. A kingdom in the domain ARCHAEA comprised ... Crenarchaeota. Tree Number(s). B02.075. Unique ID. D019615. RDF Unique Identifier. http://id.nlm.nih.gov/mesh/D019615 ...
Crenarchaeota Preferred Term Term UI T058345. Date01/01/1999. LexicalTag NON. ThesaurusID NLM (1998). ... Crenarchaeota Preferred Concept UI. M0029115. Registry Number. txid28889. Scope Note. A kingdom in the domain ARCHAEA comprised ... Crenarchaeota. Tree Number(s). B02.075. Unique ID. D019615. RDF Unique Identifier. http://id.nlm.nih.gov/mesh/D019615 ...
... mdv2 mdv1 dimethylbenzoic znf331 decline gonadotroph gonadotrope leporinus decorations estrogens crenarchaeote crenarchaeota ...
Representative members of phyla Thaumarchaeota and Crenarchaeota were also identified. CONCLUSIONS:. Archaea are present in ...
An order of CRENARCHAEOTA comprised of irregular coccoid to disc-shaped, hyperthermophiles, and found in submarine hydrothermal ...
Crenarchaeota Creosote Crepis Cresols CREST Syndrome Creutzfeldt-Jakob Syndrome Crew Resource Management, Healthcare Cri-du- ...
  • Foram detectados apenas dois filos de Archaea nos cinco manguezais, Crenarchaeota e Euryarchaeota. (ufc.br)
  • Based on Eocyte hypothesis eukaryotes originated from prokaryotic Crenarchaeota, a phylum within the archaea . (blastingnews.com)
  • This is supported due that the ribosomes in the Crenarchaeota are more related to those of eukaryotes than to bacteria or euryarchaeota-second major kingdom of archaea . (blastingnews.com)
  • Of these groups the Crenarchaeota and the Euryarchaeota are most intensively studied. (eol.org)
  • Aunque archaea se parecen a bacteria en morfología y organización genómica, se asemejan a eucarya en su método de replicación genómica. (bvsalud.org)