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  • Digitale Medien  (3)
  • Purine metabolism  (2)
  • Alanine dehydrogenase  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Archives of microbiology 134 (1983), S. 167-169 
    ISSN: 1432-072X
    Schlagwort(e): Nitrogenase ; Glutamine synthetase ; Glutamate synthase ; Glutamate dehydrogenase ; Asparagine synthetase ; Alanine dehydrogenase ; β-Methylaspartase ; Clostridium formicoaceticum
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Clostridium formicoaceticum possesses the following enzymes for the assimilation of N2 and NH 4 + : nitrogenase, glutamine synthetase, NADH- and NADPH-dependent glutamate synthase, NADH- and NADPH-dependent glutamate dehydrogenase, NADPH-dependent alamine dehydrogenase, and NH 4 + -dependent asparagine synthetase. Nitrogenase and glutamine synthetase are repressed and alanine dehydrogenase is induced by NH 4 + , while the synthesis of the other enzymes is not influenced by the extracellular NH 4 + level. Glutamate is degraded via glutamate mutase and β-methylaspartase.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Archives of microbiology 140 (1984), S. 2-8 
    ISSN: 1432-072X
    Schlagwort(e): Eubacterium angustum ; Purine metabolism ; Xanthine dehydrogenase ; Selenium
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract A strictly anaerobic, uric acid, xanthine, and guanine fermenting bacterium was isolated from sewage sludge requiring thiamine as a vitamin. Acetate, formate, ammonia and CO2 were products. Cells were Gram-positive, straight rods, 3 to 6.5 μm long and 1.1 to 1.5 μm wide. They were non-motile, however, possessed flagella. Spore formation could not be obtained. The guanine-plus-cytosine content (G+C) of its deoxyribonucleic acid was 40.3 mol%. Based on these features, the organism belongs to the genus Eubacterium. Due to its restricted substrate spectrum and its inability to utilize arginine or to form cytochromes like E. lentum, this organism did not resemble any of the previously described species of Eubacterium. Therefore, it is proposed to form a new species Eubacterium angustum sp. nov.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Archives of microbiology 138 (1984), S. 345-353 
    ISSN: 1432-072X
    Schlagwort(e): Clostridium acidiurici ; Clostridium cylindrosporum ; Clostridium purinolyticum ; Purine metabolism ; Selenite ; Antibiogram ; DNA homology ; Taxonomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Eleven strains of obligately purinolytic clostridia have been studied with respect to their assignment to the three type strains of Clostridium acidiurici, C. cylindrosporum, and C. purinolyticum. DNA/DNA-hybridization proved to be the method of choice for differentiation whereas phenotypic characteristics such as spore morphology, substrate spectra, nutritional requirements, product formation, and sensitivity against various antibiotics did not allow unequivocal identification. All strains depended on selenite for growth.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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