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  • 1
    Electronic Resource
    Electronic Resource
    Amino acid sequence of nitrite reductase: a copper protein from Achromobacter cycloclastes (1991)
    s.l. : American Chemical Society
    Biochemistry 30 (1991), S. 7180-7185 
    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/bi00243a020
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  • 2
    Electronic Resource
    Electronic Resource
    Products of denitrification by a marine bacterium as revealed by gas chromatography (1967)
    Springer
    Marine biology 1 (1967), S. 136-139 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Gas chromatography was used to analyse the gases released by growing cultures of the denitrifying marine bacterium Pseudomonas perjectomarinus. When nitrate was provided as final oxidant, CO2 was the first detectable gas released. Following the peak rate of release of CO2 at approximately 16 h, N2 liheration began and peaked at 30 h. When N2O was provided as terminal oxidant, CO2 and N2 release began within a few hours and the rate of liberation of both increased for 45 to 50 h before leveling. Cell-free extracts of bacteria from denitrifying cultures of P. perfectomarinus were incubated anaerobically with nitrate, malic acid and electron transfer cofactors provided, and the gases in the atmosphere above the reaction mixtures were analysed. NO was found to be present transiently, and N2O was discerned after prolonged incubation. The applicability of gas chromatography to analyses of marine ecosystems and the need for better means of sampling the atmosphere above enzymatic reaction mixtures were disoussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00386519
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  • 3
    Electronic Resource
    Electronic Resource
    Nitrite reduction in Rhizobium “hedysari” strain HCNT 1 (1986)
    Springer
    Archives of microbiology 146 (1986), S. 233-238 
    Details
    ISSN: 1432-072X
    Keywords: Nitrite detoxification ; Cytochrome o ; Nitrous oxide production ; Hedysarum coronarium ; Rhizobium spp. ; Denitrification
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Rhizobium “hedysari” strain HCNT 1 rapidly reduced nitrite to N2O, only slowly reduced nitrate to nitrite and did not exhibit nitrous oxide reductase activity. Nitrite reduction in this rhizobium strain may be a detoxification mechanism for conversion of nitrite, which inhibits O2 uptake, to non-toxic N2O. Concentrations of nitrite as small as 3 μM diminished O2 uptake in whole cells. The bacterium did not couple energy conservation with nitrate or nitrite reduction. Cells neither grew anaerobically at the expense of these nitrogen oxides nor translocated protons during reduction of nitrite. Induction of nitrite reductase activity was not a response to the presence of nitrate or nitrite, but occurred instead when the O2 concentration in culture atmospheres fell to 〈16.5% of air saturation. Sensitivity of cytochrome o, which is synthesized only in cells grown under O2-limited conditions, may account for the toxicity of nitrite in strain HCNT 1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00403222
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  • 4
    Electronic Resource
    Electronic Resource
    Nitrite reduction in Bacteroids of Rhizobium “hedysari” strain HCNT 1 (1988)
    Springer
    Archives of microbiology 149 (1988), S. 384-388 
    Details
    ISSN: 1432-072X
    Keywords: Nitrite reduction ; Nitrite inhibition ; Bacteroids ; Sulla ; Nitrogenase ; Rhizobium “hedysari”
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Ex planta, bacteroids of the sulla-symbiont Rhizobium “hedysari” strain HCNT 1 terminated reduction of nitrite at nitrous oxide irrespective of the presence or absence of acetylene. Nitrate was not reduced during the experimental period, but slight nitrate reductase activity occurred if incubation with nitrate was prolonged (up to 15 h). As was observed in free-living cells, exposure of the bacteroids to the metal chelator, diethyldithiocarbamate, prevented reduction of nitrite, indicating the presence of a copper-containing nitrite reductase. Pulses of 10–75 μM nitrite transiently impeded O2 uptake in bacteroids, which resumed consumption of O2 when the nitrite had been reduced. Exposure to 〉1.0 mM nitrite for 24h greatly inhibited nitrogenase activity (assayed as acetylene reduction activity) of bacteroids in planta. Exposure to the same concentrations of nitrite after 1h of incubation in the presence of acetylene almost completely stopped ongoing ethylene production in bacteroids of strain HCNT 1 extracted from nodules. Free cells of the non-nitrite-reducing R. “hedysari” strain CC 1335 were lacking in nitrogenase (acetylene-reduction) activity, whereas identically cultured (low-oxygen) strain HCNT 1 cells reduced both nitrite and acetylene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00425575
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  • 5
    Electronic Resource
    Electronic Resource
    A Possible Vitamin E Deficiency occurring in a Herd of Pigs fed Standard Rations in the Tropics (1959)
    [s.l.] : Nature Publishing Group
    Nature 183 (1959), S. 828-829 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] As the clinical symptoms were somewhat similar to those described by workers in the temperate zone as occurring in lambs suffering from 'stiff lamb disease' and calves with 'white muscle disease' (Blaxter and Brown1), and in piglets born to sows fed on a vitamin E deficient ration (Adamstone et ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/183828a0
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  • 6
    Electronic Resource
    Electronic Resource
    Grazing Behaviour of Dairy Cattle in the Tropics (1951)
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 610-611 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] At this station we have completed what is, so far as we know, the first comprehensive investigation into the behaviour of dairy cows in the tropics. Six grade 6 Friesian cows with approximately the same productivity were selected from the station herd. They were managed in the same way as, and run ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/167610a0
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  • 7
    Electronic Resource
    Electronic Resource
    Urea Excretion in Ruminants (1962)
    [s.l.] : Nature Publishing Group
    Nature 194 (1962), S. 1057-1058 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] VARIOUS authors1'3-7 have published conflicting reports on the level of urea excretion in the urine of ruminants. Read1, investigating the urine nitrogen excretion of a pregnant female camel (Camelus bactrianus) fed on sorghum leaves, sweet potato and salt, reported that there was only a trace of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1941057a0
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  • 8
    Electronic Resource
    Electronic Resource
    Hydrolysis of Secondary Alcohol Sulphate by a Bacterial Enzyme (1967)
    [s.l.] : Nature Publishing Group
    Nature 214 (1967), S. 623-624 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Cell free extracts were prepared by passing through a French pressure cell washed cells collected after 24 h from a mineral salts medium containing 0*05 per cent yeast extract and 0.25 per cent Oronite C10-C20 mixture as the source of carbon. The extracts, suspended in 0.05 molar tris ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/214623a0
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  • 9
    Electronic Resource
    Electronic Resource
    Growth Yield and Efficiency in Chemosynthetic Microorganisms (1978)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Microbiology 32 (1978), S. 155-183 
    Details
    ISSN: 0066-4227
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.mi.32.100178.001103
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  • 10
    Electronic Resource
    Electronic Resource
    Energy Yields and Growth of Heterotrophs (1970)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Microbiology 24 (1970), S. 17-52 
    Details
    ISSN: 0066-4227
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.mi.24.100170.000313
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