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Triphosphopyridine Nucleotide-linked Glyceraldehyde Phosphate Dehydrogenase in a Non-Photosynthetic Plant Tissue

Naturevolume 191pages7172 (1961) | Download Citation



IT has been established that, whereas the usual diphosphopyridine nucleotide (DPN)-linked glyceraldehyde-phosphate dehydrogenase is found generally distributed in higher plant tissues, a separate enzyme, specifically requiring triphosphopyridine nucleotide (TPN) as coenzyme, is restricted to leaves1–4. The distinctive association of the TPN-glyceraldehyde phosphate dehydrogenase with the photosynthetic apparatus and the specificity for TPN shown in some types of photosynthetic phosphorylation have encouraged the view that the reductive step in hexose synthesis in leaves is mediated by this enzyme.

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  1. Department of Biological Sciences, Purdue University, Lafayette, Indiana, U.S.A.

    • C. R. BENEDICT
    •  & H. BEEVERS


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