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  • Title: Chloroplast and cytosolic triosephosphate isomerases from spinach: purification, microsequencing and cDNA cloning of the chloroplast enzyme.
    Author: Henze K, Schnarrenberger C, Kellermann J, Martin W.
    Journal: Plant Mol Biol; 1994 Dec; 26(6):1961-73. PubMed ID: 7858230.
    Abstract:
    Chloroplast and cytosolic triosephosphate isomerases from spinach were separated and purified to homogeneity. Both enzymes were partially sequenced by Edman degradation. Using degenerate primers designed against the amino acid sequences, a homologous probe for the chloroplast enzyme was amplified and used to isolate several full-size cDNA clones. Chloroplast triosephosphate isomerase is encoded by a single gene in spinach. Analysis of the chloroplast cDNA sequence in the context of its homologues from eukaryotes and eubacteria reveals that the gene arose through duplication of its preexisting nuclear counterpart for the cytosolic enzyme during plant evolution.
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