Results 161 to 170 of about 9,151 (189)

Sensory Transduction in Halobacterium

1985
Bacteria can sense and integrate outside stimuli and adapt to new environmental conditions, thereby revealing a simple mode of behavior. By a temporal sensing mechanism, bacteria orient indirectly in a biased three-dimensional random walk which finally leads the cells to accumulate in favorable surroundings or to avoid unfavorable areas.
Eilo Hildebrand, Angelika Schimz
openaire   +1 more source

Light energy conversion in halobacterium halobium

Journal of Supramolecular Structure, 1974
AbstractHalobacterium halobium carries out photophosphorylation. A rhodopsin‐like protein, bacteriorhodopsin, located in the cell membrane mediates the first step in energy transduction, the conversion of light energy into a chemiosmotic gradient. After absorption of a photon, bacteriorhodopsin undergoes a series of fast reactions, returning to its ...
W, Stoeckenius, R H, Lozier
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Repair of UV damage in Halobacterium salinarum

Biochemical Society Transactions, 2003
Halobacterium is one of the few known Archaea that tolerates high levels of sunlight in its natural environment. Photoreactivation is probably its most important strategy for surviving UV irradiation and we have shown that both of the major UV photoproducts, cyclobutane pyrimidine dimers (CPDs) and (6–4) photoproducts, can be very efficiently repaired ...
S, McCready, L, Marcello
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Dicyclohexylcarbodiimide-sensitive ATPase in Halobacterium saccharovorum

Archives of Biochemistry and Biophysics, 1985
Membranes from Halobacterium saccharovorum contained a cryptic ATPase which required Mg2+ or Mn2+ and was activated by Triton X-100. The optimal pH for ATP hydrolysis was 9-10. ATP or GTP were hydrolyzed at the same rate while ITP, CTP, and UTP were hydrolyzed at about half that rate. The products of ATP hydrolysis were ADP and phosphate.
H, Kristjansson, L I, Hochstein
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Unusual physical organization of the Halobacterium genome

Nature, 1982
The genomes of the extremely halophilic bacteria, Halobacterium halobium and Halobacterium volcanii, contain many repeated sequences. These sequences comprise many families, seem to be highly mobile and are arranged in both clustered and dispersed fashions within these genomes.
C, Sapienza, W F, Doolittle
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Iron-uptake in the Euryarchaeon Halobacterium salinarum

BioMetals, 2007
Iron-uptake is well studied in a plethora of pro- and eukaryotic organisms with the exception of Archaea, which thrive mainly in extreme environments. In this study, the mechanism of iron transport in the extremely halophilic Euryarchaeon Halobacterium salinarum strain JW 5 was analyzed.
Dirk, Hubmacher, Berthold F, Matzanke, Stefan, Anemüller   +2 more
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Factors Influencing the Retention of K in a Halobacterium

1975
The cells of at least two species of Halobacterium contain 3–4 mol of potassium and require for survival a similar concentration of NaC1 in the outside medium (Christian and Waltho, 1962; Ginzburg et al, 1970). It has been suggested (Ginzburg et al, 1970, 1971a, b) that the retention of cell potassium is not directly dependent upon metabolism.
M, Ginzburg, B Z, Ginzburg
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Proteomanalysen an Halobacterium salinarum

2005
Im Rahmen dieser Arbeit wurden verschiedene Proteome von H. salinarum untersucht, die nach zellulären Kompartimenten unterschieden wurden in (1) das Flagellarmotor-Proteom (2) das Cytosolproteom und (3) das Membranproteom. Die Untersuchung des Flagellarmotors erfolgte hauptsächlich auf struktureller Basis mittels Elektronenmikroskopie.
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Bacteriorhodopsin formation in Halobacterium halobium

Canadian Journal of Microbiology, 1976
Systematic examinations were made of factors influencing bacteriorhodopsin formation during the growth of Halobacterium halobium. Light-induced adenosine triphosphate (ATP) production and [14C]proline uptake were used as measures of functional ability of the purple membrane.
J S, Hubbard, C A, Rinehart
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Isotopic Labeling of Proteins in Halobacterium salinarum

2015
It is often necessary to obtain isotopically labeled proteins containing (15)N, (13)C, or (2)H for nuclear magnetic resonance; and (2)H for small-angle neutron scattering or neutron diffraction studies. To achieve uniform isotopic labeling, protein expression is most commonly performed in Escherichia coli or yeast using labeled media. However, proteins
Thomas E, Cleveland, Zvi, Kelman
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