Purification and Molecular Characterization of a Quinoprotein Alcohol Dehydrogenase from Pseudogluconobacter saccharoketogenes IFO 14464
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概要
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We have cloned and verified a gene for a novel quinoprotein alcohol dehydrogenase(ADH)from Pseudogluconobacter saccharoketogenes IFO 14464 that has the ability to oxidize L-sorbose to 2-keto-L-gulonic acid(2-KLGA). The enzyme was purified from the soluble fraction of the bacterium and was estimated to be a monomeric protein with a molecular weight of 65kDa from the analyses of SDS-PAGE and gel-filtration chromatography. An open reading frame of 1824 bp for 608 amino acid residues was estimated as the gene for ADH because of the consistency of the calculated molecular mass and the elucidated partial amino acid sequences of the native enzyme. Homology search revealed that the enzyme showed close similarity to quinoprotein alcohol dehydrogenases isolated from Methylobacterium extorquens and Acetobacter aceti, particularly in the tryptophan docking motifs in the α-subunits of those dehydrogenases. The ability to convert L-sorbose to 2-KLGA was found when the lysate of recombinant Escherichia coli DH10B transformed with the gene for ADH was mixed with CaCl_2 and pyrroloquinoline quinone(PQQ). These data indicate that the cloned DNA is the desired gene for the ADH in which CaCl_2 and PQQ are essential for enzymatic activity.
- 2001-12-25
著者
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Yamashita Michio
Fermentation and Biotechnology Laboratories, Astellas Pharma Inc.
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SHIBATA TAKASHI
Fermentation Development Laboratories, Fujisawa Pharmaceutical Co., Ltd.
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ISHII YOSHINORI
Fermentation Development Laboratories, Fujisawa Pharmaceutical Co., Ltd.
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NOGUCHI YUJI
Fermentation Development Laboratories, Fujisawa Pharmaceutical Co., Ltd.
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YAMADA HISASHI
Fermentation Development Laboratories, Fermentation Development Laboratories, Fujisawa Pharmaceutica
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SAITO YOSHIMASA
Fermentation Development Laboratories, Fujisawa Pharmaceutical Co., Ltd.
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Yamashita Mitsuo
Department Of Biotechnology Graduate School Of Engineering Osaka University:department Of Applied Ch
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Yamashita M
Department Of Biotechnology Graduate School Of Engineering Osaka University
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Noguchi Yuji
Fermentation Development Laboratories Fujisawa Pharmaceutical Co. Ltd.
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Ishii Yoshinori
Pharmacological Research Laboratories Fujisawa Pharmaceutical Co. Ltd.
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Ishii Y
Fermentation Development Laboratories Fujisawa Pharmaceutical Co. Ltd.
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Yamada Hisashi
Fermentation Development Laboratories Fermentation Development Laboratories Fujisawa Pharmaceutical
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Yamashita Michio
Fermentation And Biotechnology Laboratories Astellas Pharma Inc.
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Yamada H
Fermentation Development Laboratories Fermentation Development Laboratories Fujisawa Pharmaceutical
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Ishii Y
Ishii Orthopaedic And Rehabilitation Clinic
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Saito Yoshimasa
Fermentation Development Laboratories Fujisawa Pharmaceutical Co. Ltd.:(present Address)fujisawa Res
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Yamashita Manabu
Research Institute For Bioresources Okayama University
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Matsumoto Yukimasa
Department Of Biotechnology Graduate School Of Engineering Osaka University
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Shibata Takashi
Fermentation Development Laboratories Fujisawa Pharmaceutical Co. Ltd.:(present Address)exploratory
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Yamashita Michio
Fermentation And Biotechnology Laboratories
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