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    Plant Physiol. 1982 Jul;70(1):74-7.

    Localization of the Enzymes of Quinolizidine Alkaloid Biosynthesis in Leaf Chloroplasts of Lupinus polyphyllus.

    Source

    Institut für Pharmazeutische Biologie der Technischen Universität Braunschweig, D-3300 Braunschweig, West Germany.

    Abstract

    Studies with purified chloroplasts of Lupinus polyphyllus LINDL. leaflets indicate that the first two enzymes of quinolizidine alkaloid biosynthesis, lysine decarboxylase and 17-oxosparteine synthase, are localized in the chloroplast stroma. Thus, both enzymes share the same subcellular compartment as the biosynthetic pathway of lysine, the precursor of quinolizidine alkaloids. The activity of diaminopimelate decarboxylase, the final enzyme in lysine biosynthesis, is about two to three orders of magnitude higher than that of the enzymes of alkaloid formation.

    PMID:
    16662483
    [PubMed]
    PMCID:
    PMC1067088
    Free PMC Article

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