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Haloarcula Virus HCIV1
''Haloarcula'' (common abbreviation ''Har.'') is a genus of extreme halophilic Archaea in the class of Halobactaria. Cell Structure ''Haloarcula'' species can be distinguished from other genera in the family Halobacteriaceae by the presence of specific derivatives of TGD-2 polar lipids. ''H. quadrata'' has predominantly flat, square-shaped, somewhat pleomorphic cells. Metabolism ''H. quadrata'' was first isolated when researchers were attempting to culture ''Haloquadratum walsbyi'', a haloarchaeon that was thought to be unculturable until 2004. Similar to other halophilic archaea, ''Haloarcula'' species grow optimally at 40–45 °C. Growth appears in sheets of up to 65 cells often in the shape of a square or triangle. Taxonomy The genus of ''Haloarcula'' was long grouped with other halophilic archaea such as ''Halobacterium'' until genomic analysis prompted to reorder this genus in the new family of Haloarculaceae. Ecology ''Haloarcula'' species are found in neutral sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archaea
Archaea ( ; singular archaeon ) is a domain of single-celled organisms. These microorganisms lack cell nuclei and are therefore prokaryotes. Archaea were initially classified as bacteria, receiving the name archaebacteria (in the Archaebacteria kingdom), but this term has fallen out of use. Archaeal cells have unique properties separating them from the other two domains, Bacteria and Eukaryota. Archaea are further divided into multiple recognized phyla. Classification is difficult because most have not been isolated in a laboratory and have been detected only by their gene sequences in environmental samples. Archaea and bacteria are generally similar in size and shape, although a few archaea have very different shapes, such as the flat, square cells of ''Haloquadratum walsbyi''. Despite this morphological similarity to bacteria, archaea possess genes and several metabolic pathways that are more closely related to those of eukaryotes, notably for the enzymes involved ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haloarcula Marismortui
''Haloarcula marismortui'' is a halophilic archaeon isolated from the Dead Sea Morphology ''Haloarcula marismortui'' is a Gram-negative archaeon with a cell size of 1.0-2.x 2.0-3.0 μm (diameter x length). Cells are pleomorphic appearing as short rods to rectangles. ''H. marismortui'' is motile via archaellum and possesses a cell membrane that consists of triglycosyl, diether lipids, and glycoproteins. Metabolism ''H. marismortui'' is an aerobic chemoorganotroph that utilizes glycolysis and a modified Entner-Doudaroff pathway for the breakdown of nutrients. ''H. marismortui'' utilizes energy sources such as glucose, sucrose, fructose, glycerol, malate, acetate & succinate while producing nitrogen, metabolic carbon, and acid as byproducts. Can also grow anaerobically by using nitrate as an electron acceptor. Genomic Properties The genome of ''H. marismortui'' is organized into nine circular replicons, in which individual G+C content varies from 54 to 62%. ''H. marismortui'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halobacterium
''Halobacterium'' (common abbreviation ''Hbt.'') is a genus in the family Halobacteriaceae. The genus ''Halobacterium'' ("salt" or "ocean bacterium") consists of several species of Archaea with an aerobic metabolism which requires an environment with a high concentration of salt; many of their proteins will not function in low-salt environments. They grow on amino acids in their aerobic conditions. Their cell walls are also quite different from those of bacteria, as ordinary lipoprotein membranes fail in high salt concentrations. In shape, they may be either rods or cocci, and in color, either red or purple. They reproduce using binary fission (by constriction), and are motile. ''Halobacterium'' grows best in a 42 °C environment. The genome of an unspecified ''Halobacterium'' species, sequenced by Shiladitya DasSarma, comprises 2,571,010 bp (base pairs) of DNA compiled into three circular strands: one large chromosome with 2,014,239 bp, and two smaller ones with 191,346 an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haloquadratum Walsbyi
''Haloquadratum walsbyi'' is of the genus ''Haloquadratum,'' within the archaea domain known for its square halophilic nature. First discovered in a brine pool in the Sinai peninsula of Egypt, ''H. walsbyi'' is noted for its flat, square-shaped cells, and its unusual ability to survive in aqueous environments with high concentrations of sodium chloride and magnesium chloride. The species' genus name ''Haloquadratum'' translates from Greek and Latin as "salt square". This archaean is also commonly referred to as "Walsby's Square Bacterium" because of its identifying square shape which makes it very unique. In accordance with its name, ''Haloquadratum walsbyi'' are most abundantly observed in salty environments. ''Haloquadratum walsbyi'' is a phototrophic halophilic archaeon. It was the only recognized species of the genus ''Haloquadratum'' until 1999 when Haloarcula quadrata was reported as recovered from a brine pool. ''Haloquadratum walsbyi'' is very unusual because of its u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halobacteriaceae
In taxonomy, the Halobacteriaceae are a family of the Halobacteriales in the domain Archaea.See the NCBIbr>webpage on Halobacteriaceae Data extracted from the ''Halobacteriaceae'' represent a large part of halophilic Archaea, along with members in two other methanogenic families, ''Methanosarcinaceae'' and ''Methanocalculaceae''. The family consists of many diverse genera that can survive extreme environmental niches. Most commonly, Halobacteriaceae are found in hypersaline lakes and can even tolerate sites polluted by heavy metals. They include neutrophiles, acidophiles (ex. ''Halarchaeum acidiphilum''), alkaliphiles (ex. ''Natronobacterium''), and there have even been psychrotolerant species discovered (ex. ''Hrr. lacusprofundi''). Some members have been known to live aerobically, as well as anaerobically, and they come in many different morphologies. These diverse morphologies include rods in genus Halobacterium, cocci in Halococcus, flattened discs or cups in Haloferax, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archaeon
Archaea ( ; singular archaeon ) is a domain of single-celled organisms. These microorganisms lack cell nuclei and are therefore prokaryotes. Archaea were initially classified as bacteria, receiving the name archaebacteria (in the Archaebacteria kingdom), but this term has fallen out of use. Archaeal cells have unique properties separating them from the other two domains, Bacteria and Eukaryota. Archaea are further divided into multiple recognized phyla. Classification is difficult because most have not been isolated in a laboratory and have been detected only by their gene sequences in environmental samples. Archaea and bacteria are generally similar in size and shape, although a few archaea have very different shapes, such as the flat, square cells of ''Haloquadratum walsbyi''. Despite this morphological similarity to bacteria, archaea possess genes and several metabolic pathways that are more closely related to those of eukaryotes, notably for the enzymes involved in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haloarcula Vallismortis
''Haloarcula'' (common abbreviation ''Har.'') is a genus of extreme halophilic Archaea in the class of Halobactaria. Cell Structure ''Haloarcula'' species can be distinguished from other genera in the family Halobacteriaceae by the presence of specific derivatives of TGD-2 polar lipids. ''H. quadrata'' has predominantly flat, square-shaped, somewhat pleomorphic cells. Metabolism ''H. quadrata'' was first isolated when researchers were attempting to culture ''Haloquadratum walsbyi'', a haloarchaeon that was thought to be unculturable until 2004. Similar to other halophilic archaea, ''Haloarcula'' species grow optimally at 40–45 °C. Growth appears in sheets of up to 65 cells often in the shape of a square or triangle. Taxonomy The genus of ''Haloarcula'' was long grouped with other halophilic archaea such as ''Halobacterium'' until genomic analysis prompted to reorder this genus in the new family of Haloarculaceae. Ecology ''Haloarcula'' species are found in neutral sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haloarcula Tradensis
''Haloarcula'' (common abbreviation ''Har.'') is a genus of extreme halophilic Archaea in the class of Halobactaria. Cell Structure ''Haloarcula'' species can be distinguished from other genera in the family Halobacteriaceae by the presence of specific derivatives of TGD-2 polar lipids. ''H. quadrata'' has predominantly flat, square-shaped, somewhat pleomorphic cells. Metabolism ''H. quadrata'' was first isolated when researchers were attempting to culture ''Haloquadratum walsbyi'', a haloarchaeon that was thought to be unculturable until 2004. Similar to other halophilic archaea, ''Haloarcula'' species grow optimally at 40–45 °C. Growth appears in sheets of up to 65 cells often in the shape of a square or triangle. Taxonomy The genus of ''Haloarcula'' was long grouped with other halophilic archaea such as ''Halobacterium'' until genomic analysis prompted to reorder this genus in the new family of Haloarculaceae. Ecology ''Haloarcula'' species are found in neutral sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haloarcula Sebkhae
''Haloarcula'' (common abbreviation ''Har.'') is a genus of extreme halophilic Archaea in the class of Halobactaria. Cell Structure ''Haloarcula'' species can be distinguished from other genera in the family Halobacteriaceae by the presence of specific derivatives of TGD-2 polar lipids. ''H. quadrata'' has predominantly flat, square-shaped, somewhat pleomorphic cells. Metabolism ''H. quadrata'' was first isolated when researchers were attempting to culture ''Haloquadratum walsbyi'', a haloarchaeon that was thought to be unculturable until 2004. Similar to other halophilic archaea, ''Haloarcula'' species grow optimally at 40–45 °C. Growth appears in sheets of up to 65 cells often in the shape of a square or triangle. Taxonomy The genus of ''Haloarcula'' was long grouped with other halophilic archaea such as ''Halobacterium'' until genomic analysis prompted to reorder this genus in the new family of Haloarculaceae. Ecology ''Haloarcula'' species are found in neutral sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haloarcula Salaria
''Haloarcula'' (common abbreviation ''Har.'') is a genus of extreme halophilic Archaea in the class of Halobactaria. Cell Structure ''Haloarcula'' species can be distinguished from other genera in the family Halobacteriaceae by the presence of specific derivatives of TGD-2 polar lipids. ''H. quadrata'' has predominantly flat, square-shaped, somewhat pleomorphic cells. Metabolism ''H. quadrata'' was first isolated when researchers were attempting to culture ''Haloquadratum walsbyi'', a haloarchaeon that was thought to be unculturable until 2004. Similar to other halophilic archaea, ''Haloarcula'' species grow optimally at 40–45 °C. Growth appears in sheets of up to 65 cells often in the shape of a square or triangle. Taxonomy The genus of ''Haloarcula'' was long grouped with other halophilic archaea such as ''Halobacterium'' until genomic analysis prompted to reorder this genus in the new family of Haloarculaceae. Ecology ''Haloarcula'' species are found in neutral sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haloarcula Quadrata
''Haloarcula quadrata'' is a species of archaea discovered in a brine pool in the Sinai peninsula of Egypt. It was one of the first strains of prokaryotes whose cells show a flat, box-like shape. They were categorized as Haloarcula on the basis of their polar lipid composition. Morphology and metabolism The cells move using single or multiple flagella but lack gas vacuoles. Species within the genus ''Haloarcula'' are Gram negative and extremely halophilic, and they can use any of several sources of carbon Carbon () is a chemical element with the symbol C and atomic number 6. It is nonmetallic and tetravalent In chemistry, the valence (US spelling) or valency (British spelling) of an element is the measure of its combining capacity with o .... References External links Type strain of ''Haloarcula quadrata'' at Bac''Dive'' - the Bacterial Diversity Metadatabase Halobacteria Archaea described in 1999 {{Euryarchaeota-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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