Chloroplast and cytosolic triosephosphate isomerases from spinach: purification, microsequencing and cDNA cloning of the chloroplast enzyme.
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.
Institut für Genetik, Technische Universität Braunschweig, FRG, Germany.
K
K
Henze
C
C
Schnarrenberger
J
J
Kellermann
W
W
Martin
D000595:Amino Acid Sequence; D001483:Base Sequence; D002451:Cell Compartmentation; D002736:Chloroplasts / Q000201:enzymology; D003001:Cloning, Molecular; D003600:Cytosol / Q000201:enzymology; D018076:DNA, Complementary / Q000235:genetics; D018628:Gene Dosage; D017343:Genes, Plant / Q000235:genetics*; D007527:Isoenzymes / Q000235:genetics* / Q000302:isolation & purification; D008969:Molecular Sequence Data; D017421:Sequence Analysis; D017386:Sequence Homology, Amino Acid; D013045:Species Specificity; D018724:Spinacia oleracea / Q000201:enzymology / Q000235:genetics*; D014305:Triose-Phosphate Isomerase / Q000737:chemistry / Q000235:genetics* / Q000302:isolation & purification
D018076:DNA, Complementary; D007527:Isoenzymes; D014305:Triose-Phosphate Isomerase