Purification and characterization of membrane-bound cyclic alcohol dehydrogenase from Gluconobacter frateurii CHM 9

DOI Web Site Web Site PubMed 被引用文献10件 参考文献35件
  • MOONMANGMEE Duangtip
    Department of Biological Chemistry, Faculty of Agriculture, Yamaguchi University On leave from the Department of Microbiology, Faculty of Science, King Mongkut’s University of Technology Thonburi
  • FUJII Yoshikazu
    Department of Biological Chemistry, Faculty of Agriculture, Yamaguchi University
  • TOYAMA Hirohide
    Department of Biological Chemistry, Faculty of Agriculture, Yamaguchi University
  • THEERAGOOL Gunjana
    Department of Microbiology, Faculty of Science, Kasetsart University
  • LOTONG Napha
    Department of Microbiology, Faculty of Science, Kasetsart University
  • MATSUSHITA Kazunobu
    Department of Biological Chemistry, Faculty of Agriculture, Yamaguchi University
  • ADACHI Osao
    Department of Biological Chemistry, Faculty of Agriculture, Yamaguchi University

書誌事項

タイトル別名
  • Purification and Characterization of Membrane-bound Quinoprotein Cyclic Alcohol Dehydrogenase from Gluconobacter frateurii CHM 9.

この論文をさがす

説明

A quinoprotein catalyzing oxidation of cyclic alcohols was found in the membrane fraction for the first time, after extensive screening among aerobic bacteria. Gluconobacter frateurii CHM 9 was finally selected in this study. The enzyme tentatively named membrane-bound cyclic alcohol dehydrogenase (MCAD) was found to occur specifically in the membrane fraction, and pyrroloquinoline quinone (PQQ) was functional as the primary coenzyme in the enzyme activity. MCAD catalyzed only oxidation reaction of cyclic alcohols irreversibly to corresponding ketones. Unlike already known cytosolic NAD(P)H-dependent alcohol-aldehyde or alcohol-ketone oxidoreductases, MCAD was unable to catalyze the reverse reaction of cyclic ketones or aldehydes to cyclic alcohols. MCAD was solubilized and purified from the membrane fraction of the organism to homogeneity. Differential solubilization to eliminate the predominant quinoprotein alcohol dehydrogenase (ADH), and the subsequent two steps of column chromatographies, brought MCAD to homogeneity. Purified MCAD had a molecular mass of 83 kDa by SDS-PAGE. Substrate specificity showed that MCAD was an enzyme oxidizing a wide variety of cyclic alcohols. Some minor enzyme activity was found with aliphatic secondary alcohols and sugar alcohols, but not primary alcohols, differentiating MCAD from quinoprotein ADH. NAD-dependent cytosolic cyclic alcohol dehydrogenase (CCAD) in the same organism was crystallized and its catalytic and physicochemical properties were characterized. Judging from the catalytic properties of CCAD, it was apparent that CCAD was distinct from MCAD in many respects and seemed to make no contributions to cyclic alcohol oxidation.

収録刊行物

被引用文献 (10)*注記

もっと見る

参考文献 (35)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ