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  • 1
    Electronic Resource
    Electronic Resource
    Effects of the solvent medium on polyvalyribonuclease aggregation (1968)
    s.l. : American Chemical Society
    Biochemistry 7 (1968), S. 1506-1513 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00844a037
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  • 2
    Electronic Resource
    Electronic Resource
    Feast or famine in the deep sea, (Volume 25) (1999)
    Springer
    Journal of industrial microbiology and biotechnology 22 (1999), S. 540-550 
    Details
    ISSN: 1476-5535
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/sj.jim.2900664
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  • 3
    Electronic Resource
    Electronic Resource
    Biological limits of temperature and pressure (1980)
    Springer
    Origins of life and evolution of the biospheres 10 (1980), S. 215-222 
    Details
    ISSN: 1573-0875
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract Most biologists do not take into account that the greatest portion of today's biosphere is in the realm of environmental extremes, most of it being cold and under pressure. Since bacteria have the ability to adapt to environmental extremes, a close examination for the presence and/or growth of bacteria at high and low temperatures, low temperature and reduced pressure (less than 1 atm), low temperature and increased hydrostatic pressure should be made. It is also within the realm of possibility that life may have arisen in an environmental extreme on the primordial earth and then evolved over time to live under moderate temperatures and 1 atm. Microbial life has been demonstrated at temperatures slightly greater than 90°C, below 0°C, at hydrostatic pressures of 1100 atm, and possibly at cold temperatures in the atmosphere (less than 1 atm). Laboratory experiments have shown that certain enzyme reactions can occur above 100°C under hydrostatic pressure, at −26°C and at 5°C under hydrostatic pressure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00928399
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  • 4
    Electronic Resource
    Electronic Resource
    The heterotrophic activity for amino acids, glucose and acetate in Antarctic waters (1976)
    Springer
    Journal of oceanography 32 (1976), S. 74-82 
    Details
    ISSN: 1573-868X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The kinetic approach ofWright andHobbie (1966) was used to determine the heterotrophic potential of Antarctic waters. Variations with depth and geographical location are discussed. Temperature studies indicate the psychrophilic nature of the microbial population. In samples having environmental temperatures of approximately −1
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02107374
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  • 5
    Electronic Resource
    Electronic Resource
    Thermolability of glycolysis enzymes from a psychrophilic marine bacterium (1977)
    Springer
    Journal of oceanography 33 (1977), S. 254-258 
    Details
    ISSN: 1573-868X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Cell extracts ofVibrio marinus MP-1 grown at 15°C and suspended in either tris-HCl buffer or NaCl were compared for heat lability of hexokinase, glucose phosphate isomerase, and aldolase. In tris buffer glucose phosphate isomerase and aldolase lost 50 per cent activity after one hour at low thermal exposures of 34°C and 28°C, respectively. Complete loss of enzyme activity occurred at 36°C and 34°C, respectively. Hexokinase suspended in tris buffer lost all activity above 17°C. The cell extracts suspended in 3.6 per cent NaCl were more heat stable and the enzymes lost 50 per cent activity after exposure between 31°C and 35°C. The enzymes lost all activity on thermal exposure of 33°C to 38°C in the presence of NaCl.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02109643
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  • 6
    Electronic Resource
    Electronic Resource
    Thermolability of dehydrogenases from a psychrophilic marine bacterium (1977)
    Springer
    Journal of oceanography 33 (1977), S. 90-96 
    Details
    ISSN: 1573-868X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The heat lability of succinic dehydrogenase, malic dehydrogenase and lactate dehydrogenase in cell-free extracts ofVibrio marinus MP-1 grown at 15
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02110014
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  • 7
    Electronic Resource
    Electronic Resource
    Effects of environmental parameters of low temperature and hydrostatic pressure on L-serine deamination byVibrio marinus (1972)
    Springer
    Journal of oceanography 28 (1972), S. 63-70 
    Details
    ISSN: 1573-868X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Vibrio marinus, an obligately psychrophilic marine bacterium, deaminated nine of 17 amino acids tested with both L-glutamine and L-serine displaying the greatest deamination rates. The L-serine deamination temperature response of washed cells depended upon the growth temperature ofV. marinus MP-1. Cells grown at 15°C displayed optimum activity at 40°C, and a shoulder at 15°C, whereas 4°C grown cells revealed two temperature optima, one at 38 and the other at 11°C, this suggests that the 4°C grown cells are physiologically different than the 15°C grown cells. It is suggested that these peaks in deamination of L-serine at different temperatures might be due to the loss of permeability control above the maximum growth temperature (20°C) of the organism. Hydrostatic pressure stimulated or suppressed L-serine deamination by washed cells depending upon the temperature at which the cells were grown and the incubation temperature of the reaction mixture. Cells grown at 15 or 4°C had deamination stimulated under pressure in the following cases: (i) cells grown at 15°C and tested for deamination at 15°C, (ii) cells grown at 4°C and tested at 4°C and (iii) cells grown at 4°C and tested at 15°C. When cells were grown at 15°C and tested at 4°C no stimulation of deamination activity due to pressure was observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02109721
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  • 8
    Electronic Resource
    Electronic Resource
    Microbial contributions to the evolution of the ‘steady state’ carbon dioxide system (1975)
    Springer
    Origins of life and evolution of the biospheres 6 (1975), S. 37-44 
    Details
    ISSN: 1573-0875
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract Various processes for the production of carbon dioxide by microorganisms are presented. It is postulated that a ‘microniche’ developed in a reducing environment; a symbiotic relationship between alga-like organisms and bacterium-like organisms in the ‘microniche’ governed the production of carbon dioxide resulting in the establishment of the steady state carbon dioxide system in the sea.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01372388
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  • 9
    Electronic Resource
    Electronic Resource
    The fine structure ofCristispira from the lamellibranchCryptomya californica conrad (1981)
    Springer
    Current microbiology 6 (1981), S. 355-360 
    Details
    ISSN: 1432-0991
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The fine structure ofCristispira from the lamellibranchCryptomya californica Conrad was examined by Nomarski differential interference, Hoffman modulation contrast, phase contrast, polarizing, and darkfield optics, which were useful for observing the motility, morphology, and organelles of livingCristispira within the crystalline style. Transmission electron microscopy studies of double-stained sections and negatively stained whole cells revealed details of the outer sheath, axial filament, and the protoplasmic cylinder. Hundreds of periplasmic flagella were observed, as well as membrane-bound vesicles and lipid accumulations in the protoplasm, which may help to explain the mutualistic relationship which seems to exist betweenCristispira spp. and their molluscan hosts. Also described are a dialysis method for producing concentrated populations of viableCristispira from the clam, and a minimal-salts medium for their short-term maintenance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01567011
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