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    Changes in the contents of intermediates of proline and carbohydrate metabolism in flight muscle of the tsetse fly Glossina morsit ans and the fleshfly Sarcophaga tibialis

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    Date
    1982
    Author
    Olembo, Norah K
    Pearson, David J
    Type
    Article
    Language
    en
    Metadata
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    Abstract
    1. The contents of intermediates of proline metabolism, the tricarboxylate cycle and glycolysis were measured over the initial phases of flight in the thorax of the tsetse fly Glossina morsitans and the fleshfly Sarcophaga tibialis. 2. The initial rates of proline loss and alanine increase in G. morsitans were approx. twelve times those found in S. tibialis. 3. In G. morsitans there was a sharp initial decrease in the contents of glutamate, ammonia and citrate. Pyruvate content increased rapidly and those of malate and α-oxoglutarate more slowly. Similar initial changes in the contents of these intermediates were observed in S. tibialis. The total concentration of measured tricarboxylate cycle compounds did not change greatly in either insect when flight commenced. 4. Hexose monophosphate concentrations were much lower in G. morsitans than in S. tibialis, but in both insects an increase in the fructose-1,6-diphosphate/fructose-6-phosphate ratio occurred at the onset of flight. 5. The control of the tricarboxylate cycle and the proline-alanine pathway is considered. The utilisation of proline by S. tibialis during flight is discussed.
    URI
    http://www.sciencedirect.com/science/article/pii/0020179082900531
    http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/42849
    Citation
    Insect Biochemistry Volume 12, Issue 6, 1982, Pages 657–662
    Publisher
    University of Nairobi
     
    Department of Biochemistry
     
    Subject
    Glossina morsitans; Sarcophaga tibialis; proline-alanine pathway; metabolite; TCA cycle; control
    Collections
    • Faculty of Science & Technology (FST) [4284]

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