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  • Amino acid transport  (2)
  • Glucose (NH 4 + uptake)  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Mechanism of proline uptake by Chlorella vulgaris
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 735 (1983), S. 361-366 
    Details
    ISSN: 0005-2736
    Keywords: (Chlorella vulgaris) ; Amino acid transport ; Membrane potential ; Proline ; Proton symport
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2736(83)90150-5
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  • 2
    Electronic Resource
    Electronic Resource
    The amino acid transport systems of the autotrophically grown green alga Chlorella
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 821 (1985), S. 384-392 
    Details
    ISSN: 0005-2736
    Keywords: (Chlorella) ; Amino acid transport ; Kinetics
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2736(85)90042-2
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  • 3
    Electronic Resource
    Electronic Resource
    Ammonium uptake by Chlorella (1986)
    Springer
    Planta 168 (1986), S. 232-238 
    Details
    ISSN: 1432-2048
    Keywords: Ammonium uptake ; Chlorella ; Glucose (NH 4 + uptake) ; Methylamine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The preincubation of Chlorella cells with glucose caused a tenfold increase of the maximal uptake rate of ammonium without change in the K m (2 μM). A similar stimulation of ammonium uptake was found when the cells were transferred to nitrogen-free growth medium. The time-course of uptake stimulation by glucose revealed a lag period of 10–20 min. The turnover of the ammonium transport system is characterized by a half-life time of 5–10 h, but in the presence of light 30% of uptake activity stayed even after 50 h. 6-Deoxyglucose was not able to increase the ammonium uptake rate. These data together were interpreted as evidence for induction of an ammonium transport system by a metabolite of glucose. Mechanistic studies of the ammonium transport system provided evidence for the electrogenic uptake of the ammonium ion. The charge compensation for NH 4 + entry was achieved by immediate K+ efflux from the cells, and this was followed after 1 min by H+ extrusion. Ammonium accumulated in the cells; the rate of uptake was sensitive to p-trifluoromethoxy-carbonylcyanide-phenylhydrazon and insensitive to methionine-sulfoxime. Uptake studies with methylamine revealed that methylamine transport is obviously catalyzed by the ammonium transport system and, therefore, also increased in glucose-treated Chlorella cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00402968
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