Conversion of quinate to 3-dehydroshikimate by Ca-alginate-immobilized membrane of Gluconobacter oxydans IFO 3244 and subsequent asymmetric reduction of 3-dehydroshikimate to shikimate by immobilized cytoplasmic NADP-shikimate dehydrogenase

Biosci Biotechnol Biochem. 2010;74(12):2438-44. doi: 10.1271/bbb.100497. Epub 2010 Dec 7.

Abstract

The membrane fraction of Gluconobacter oxydans IFO 3244, involving membrane-bound quinoprotein quinate dehydrogenase and 3-dehydroquinate dehydratase, was immobilized into Ca-alginate beads. The Ca-alginate-immobilized bacterial membrane catalyzed a sequential reaction of quinate oxidation to 3-dehydroquinate and its spontaneous conversion to 3-dehydroshikimate under neutral pH. An almost 100% conversion rate from quinate to 3-dehydroshikimate was observed. NADP-Dependent cytoplasmic enzymes from the same organism, shikimate dehydrogenase and D-glucose dehydrogenase, were immobilized together with different carriers as an asymmetric reduction system forming shikimate from 3-dehydroshikimate. Blue Dextran 2000, Blue Dextran-Sepharose-4B, DEAE-Sephadex A-50, DEAE-cellulose, and hydroxyapatite were effective carriers of the two cytoplasmic enzymes, and the 3-dehydroshikimate initially added was converted to shikimate at 100% yield. The two cytoplasmic enzymes showed strong affinity to Blue Dextran 2000 and formed a soluble form of immobilized catalyst having the same catalytic efficiency as that of the free enzymes. This paper may be the first one on successful immobilization of NAD(P)-dependent dehydrogenases.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alcohol Oxidoreductases / chemistry
  • Alcohol Oxidoreductases / metabolism*
  • Alginates / chemistry*
  • Biocatalysis
  • Cell Membrane / metabolism*
  • Cytoplasm / enzymology*
  • Dextrans / metabolism
  • Durapatite / chemistry
  • Enzymes, Immobilized / chemistry
  • Enzymes, Immobilized / metabolism
  • Fermentation
  • Gluconobacter oxydans / cytology*
  • Gluconobacter oxydans / enzymology
  • Gluconobacter oxydans / metabolism
  • Glucuronic Acid / chemistry
  • Hexuronic Acids / chemistry
  • Ion Exchange
  • NADP / metabolism
  • Oxidation-Reduction
  • Quinic Acid / metabolism*
  • Shikimic Acid / analogs & derivatives*
  • Shikimic Acid / metabolism

Substances

  • Alginates
  • Dextrans
  • Enzymes, Immobilized
  • Hexuronic Acids
  • Quinic Acid
  • 3-dehydroshikimate
  • Shikimic Acid
  • NADP
  • Glucuronic Acid
  • blue dextran
  • Durapatite
  • Alcohol Oxidoreductases
  • Shikimate dehydrogenase