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  • Articles  (2)
  • Other Sources
  • 6-n-pentyl-5,6-dihydro-2-pyrone  (1)
  • R. capsulata E1F1  (1)
  • Springer  (2)
  • AGU (American Geophysical Union)
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  • Articles  (2)
  • Other Sources
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  • Springer  (2)
  • AGU (American Geophysical Union)
  • Oxford University Press
  • Wiley
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  • 2015-2019
  • 2010-2014
  • 1990-1994
  • 1985-1989
  • 1980-1984  (2)
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  • 2013
  • 1983  (2)
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  • Biology  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Ammonia assimilation pathways in Rhodopseudomonas capsulata E1F1 (1983)
    Springer
    Archives of microbiology 136 (1983), S. 147-151 
    Details
    ISSN: 1432-072X
    Keywords: Ammonia assimilation ; l-Alanine dehydrogenase ; l-Alanine: 2-oxoglutarate aminotransferase ; R. capsulata E1F1
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Rhodopseudomonas capsulata E1F1 growing phototrophically in different inorganic nitrogen sources assimilated ammonia through the reactions of the glutamine synthetase/glutamate synthase (GS/GOGAT) pathway. Addition of either methionine sulphoximine (MSX) or azaserine to N2-fixing cells resulted in the cessation of growth, which did not occur when these inhibitors were added to bacteria growing on l-glutamate. In nitrate-assimilating cells MSX or azaserine prevented both growth and nitrate uptake with simultaneous excretion of ammonia to the medium. In addition, MSX inactivated glutamine synthetase but neither glutamate synthase nor nitrate reductase, which, in contrast, were inactivated by azaserine. The excreted ammonia was taken up together with nitrate once growth was resumed, this uptake being coincident with the appearance of an NADPH-linked alanine dehydrogenase aminating activity and a marked increase of alanine: 2-oxoglutarate aminotransferase levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00404790
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  • 2
    Electronic Resource
    Electronic Resource
    Synthesis of δ-lactonic pheromones ofXylocopa hirsutissima andVespa orientalis and an allomone of some ants of genusCamponotus (1983)
    Springer
    Journal of chemical ecology 9 (1983), S. 703-714 
    Details
    ISSN: 1573-1561
    Keywords: Xylocopa hirsutissima ; Vespa orientalis ; Camponotus ; Hymenoptera ; Xylocopidae ; Vespidae ; Formicidae ; pheromone ; allomone ; chemical preparation ; cis-3,6-dimethyltetrahydro-2-pyrone ; 6-n-undecyltetrahydro-2-pyrone ; 6-n-pentyl-5,6-dihydro-2-pyrone ; lactones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Simple preparations ofcis-3,6-dimethyltetrahydro-2-pyrone, VII,6-n-undecyltetrahydro-2-pyrone, XVIIb, and 6-n-pentyl-5,6-dihydro-2-pyrone, XVIa, have been achieved. Products VII and XVIIb, respectively, are the major constituent of the pheromonal blend of a carpenter bee (Xylocopa hirsutissima) and the pheromone of the queens of the Oriental hornet (Vespa orientalis). The lactone XVIa is a suspected defensive allomone in two species of formicine ants of the genusCamponotus. All three compounds have been prepared from dehydroacetic acid, I, a cheap and industrially available starting material.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988777
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    Paper (German National Licenses)
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