Results 141 to 150 of about 2,424 (164)
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A new class of lipopolysaccharide from Thermoplasma acidophilum
Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1974Abstract A hot aqueous phenol extraction of lipid extracted whole cells of Thermoplasma acidophilum yielded a polymer that comprises 97% of the aqueous phase. The polymer is composed of 80% carbohydrate and 20% glycerol diether. Analysis of this polymer showed a ratio of 25:1:2 of carbohydrate: glycerol: alkane.
K J, Mayberry-Carson +3 more
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Superoxide dismutase from the archaebacterium Thermoplasma acidophilum
Biochimica et Biophysica Acta (BBA) - Protein Structure, 1981Thermoplasma acidophilum is a mycoplasma-like thermophilic organism that has been classified with the archaebacteria. It has a single superoxide dismutase (superoxide : superoxide oxidoreductase, EC 1.15.1.1) which is composed of four identically sized subunits.
K B, Searcy, D G, Searcy
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Biochemical properties of the proteasome from Thermoplasma acidophilum
European Journal of Biochemistry, 1992We have purified proteasomes to apparent homogeneity from the archaebacterium Thermoplasma acidophilum. This proteinase has a molecular mass of about 650 kDa and an isoelectric point of 5.6. The proteasome hydrolyses peptide substrates containing an aromatic residue adjacent to the reporter group, as well as [14C]methylated casein optimally at pH 8.5 ...
Dahlmann, B. +4 more
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Thermoplasma acidophilum: Intracellular pH and potassium concentration
Biochimica et Biophysica Acta (BBA) - General Subjects, 1976Thermoplasma acidophilum is a free-living thermophilic mycoplasma. Although the organism lacks a cell wall, it can grow in medium as dilute as 66 mosM. The intracellular K+ concentration can be as low as 17 mM, but varies according to the osmolality of the culture medium.
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Thermoplasma acidophilum and Thermoplasma volcanium sp. nov. from Solfatara Fields
Systematic and Applied Microbiology, 1988Summary Twenty-three isolates of motile, cell wall-deficient, thermoacidophilic archaebacteria were obtained from hot acidic springs, soils and sediments within solfatara fields in the Azores, Iceland, Indonesia, Italy, and the United States. They are facultatively anaerobic organotrophs. Anaerobically, the isolates gain energy by sulfur respiration.
Andreas Segerer +2 more
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Histone-like protein in the prokaryote Thermoplasma acidophilum
Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1975The DNA of the prokaryote Thermoplasma acidophilum is associated with a histone-like protein that has the following properties: it has a high content (23%) of basic amino acids, is positively charged at neutral pH, is soluble in acid, and can stabilize DNA against thermal denaturation.
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Nucleoprotein subunit structure in an unusual prokaryotic organism: Thermoplasma acidophilum
Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1980The freeliving thermophilic mycoplasma, Thermoplasma acidophilum, has a small acid-soluble protein tightly bound to its DNA. This protein is similar to eukaryotic histones in both size and amino acid composition. Here we report that the protein condenses DNA into globular particles that are about half the size of eukaryotic nucleosomes. Our conclusions
Searcy, DG, STEIN, DB
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Cytoskeleton in the archaebacterium Thermoplasma acidophilum? Viscosity increase in soluble extracts
Biosystems, 1993Thermoplasma acidophilum has no cell wall, and so its irregular shape implies the presence of a cytoskeleton. When soluble extracts of T. acidophilum were incubated in vitro they increased in viscosity, suggestive of a polymerizable component. Optimal conditions for the viscosity increase coincided with physiological ionic concentrations.
HIXON, WG, Searcy, DG
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Long-chain diglycerol tetraethers from Thermoplasma acidophilum
Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1977The C40 isopranol-containing glycerol ether residues which characterize the complex lipids of the extreme thermoacidophile Thermoplasma acidophilum were isolated and purified from the glycolipid and phospholipid fractions. The glycerol ether, as well as the acetate and methoxy derivatives were characterized by thin-layer, gel-permeation and gas-liquid ...
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Black lipid membranes of tetraether lipids from Thermoplasma acidophilum
Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1992Black lipid membranes were formed of tetraether lipids from Thermoplasma acidophilum and compared to the bilayer forming lipids diphytanoylphosphatidylcholine and diphythanylglucosylglycerol. Bilayer-forming lipids varied in thickness of black lipid membranes due to the organic solvent used. Measurements of the specific membrane capacitance (Cm = 0.744
J, Stern +3 more
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