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  1. No Access

    Article

    O-Dealkylation of coumarin and resorufin ethers by unicellular green algae: kinetic properties of Chlorella fusca and Chlorella sorokiniana

    O-Dealkylations of resorufin and coumarin ethers, mediated by microsomal cytochrome P450 monooxygenases from animals, plants and microorganisms, are shown here to be performed also by in...

    F. Thies, L. H. Grimme in Archives of Microbiology (1995)

  2. No Access

    Article

    O-Dealkylation of coumarin and resorufin ethers by unicellular green algae: Kinetic properties ofChlorella fusca andChlorella sorokiniana

    O-Dealkylations of resorufin and coumarin ethers, mediated by microsomal cytochrome P450 mono-oxygenases from animals, plants and microorganisms, are shown here to be performed also by in...

    F. Thies, L. H. Grimme in Archives of Microbiology (1995)

  3. No Access

    Article

    P-31 NMR saturation transfer experiments in Chlamydomonas reinhardtii : evidence for the NMR visibility of chloroplastidic Pi

    ATP synthesis and consumption in respiring cells of the green alga Chlamydomonas reinhardtii were measured with 31P in vivo NMR saturation transfer experiments to determine the intracellular compartmentation of i...

    S. Hentrich, M. Hebeler, L. H. Grimme, D. Leibfritz… in European Biophysics Journal (1993)

  4. No Access

    Article

    The dependence of the cytoplasmic pH in aerobic and anaerobic cells of the green algae Chlorella fusca and Chlorella vulgaris on the pH of the medium as determined by 31P in vivo NMR spectroscopy

    The pH in the cytoplasm of aerobic and anaerobic cells of the green algae Chlorella fusca and Chlorella vulgaris was determined in dependence on the pH of the external medium, which was varied between pH 3 and pH...

    A. C. Küsel, J. Sianoudis, D. Leibfritz, L. H. Grimme, A. Mayer in Archives of Microbiology (1990)

  5. No Access

    Article

    P-31 in-vivo NMR investigation on the function of polyphosphates as phosphate-and energysource during the regreening of the green alga Chlorella fusca

    The green alga Chlorella fusca accumulates polyphosphates under conditions of nitrogen starvation while deassembling the photosynthetic apparatus. The polyphosphate content of cells regreening after resupply with...

    A. C. Kuesel, J. Sianoudis, D. Leibfritz, L. H. Grimme… in Archives of Microbiology (1989)

  6. No Access

    Article

    N-15 in vivo NMR spectroscopic investigation of nitrogen deprived cell suspensions of the green alga Chlorella fusca

    The possibility to apply N-15 in vivo NMR spectroscopy to study algal N-metabolism has been investigated. N-15 labelled cells of the green alga Chlorella fusca, subjected to nitrogen starvation and N-14 labelled ...

    A. C. Kuesel, W. Kuhn, J. Sianoudis, L. H. Grimme, D. Leibfritz… in Archives of Microbiology (1989)

  7. No Access

    Article

    The cytoplasmic pH in photosynthesizing cells of the green alga Chlorella fusca, measured by P-31 NMR spectroscopy

    P-31 NMR investigations were performed with the green alga Chlorella fusca under anaerobic conditions in the dark and in the light.

    J. Sianoudis, A. C. Küsel, A. Mayer, L. H. Grimme, D. Leibfritz in Archives of Microbiology (1987)

  8. No Access

    Article

    Distribution of polyphosphates in cell-compartments of Chlorella fusca as measured by 31P-NMR-spectroscopy

    In suspensions of the green alga Chlorella fusca the influence of high pH and high ethylene-diamine-tetraacetic acid concentrations in the external medium, of French-press and perchloric acid extraction of the ce...

    J. Sianoudis, A. C. Küsel, A. Mayer, L. H. Grimme, D. Leibfritz in Archives of Microbiology (1986)

  9. No Access

    Article

    The significance of hydrogenase activity for the energy metabolism of green algae: anaerobiosis favours ATP synthesis in cells of Chlorella with active hydrogenase

    In cells of the green alga Chlorella fusca, which contain active hydrogenase(s), the concentration of ATP, NADH and NADPH were measured during a 5 h period of anaerobiosis in the dark and upon subsequent illumina...

    B. Mahro, Annette C. Küsel, L. H. Grimme in Archives of Microbiology (1986)

  10. No Access

    Article

    Respirational activity of Chlorella fusca monitored by in vivo P-31 NMR

    Energy metabolism during dark respiration of the green alga Chlorella fusca was investigated by 31P NMR spectroscopy. The kinetics of the transition from anaerobic to aerobic conditions (and vice versa) was follo...

    J. Sianoudis, A. C. Küsel, T. Naujokat, W. Offermann… in European Biophysics Journal (1985)

  11. No Access

    Article

    The regreening of nitrogen-deficient Chlorella fusca

    Chlorella fusca, strain 211-15, cells degreened in a nitrogen-deficient mineral growth medium in the light for 4–6 weeks were regreened for up to 24 hrs in a nitrogen rich medium that leads to synchronous cell d...

    N. A. Pyliotis, D. J. Goodchild, L. H. Grimme in Archives of Microbiology (1975)

  12. No Access

    Article

    The regreening of nitrogen-deficientChlorella fusca

    The wildtype strain 211-15 of the green algaChlorella fusca appears orange after long incubation in nitrogen-sparse media. The cells regreen within 24 h when incubated in a nitrogen-rich medium in the light. Duri...

    L. H. Grimme, R. J. Porra in Archives of Microbiology (1974)