Characterization of a New (R)-Hydroxynitrile Lyase from the Japanese Apricot Prunus mume and cDNA Cloning and Secretory Expression of One of the Isozymes in Pichia pastoris
スポンサーリンク
概要
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PmHNL, a hydroxynitrile lyase from Japanese apricot ume (Prunus mume) seed was purified to homogeneity by ammonium sulfate fractionation and chromatographic steps. The purified enzyme was a monomer with molecular mass of 58 kDa. It was a flavoprotein similar to other hydroxynitrile lyases of the Rosaceae family. It was active over a broad temperature, and pH range. The N-terminal amino acid sequence (20 amino acids) was identical with that of the enzyme from almond (Prunus dulcis). Based on the N-terminal sequence of the purified enzyme and the conserved amino acid sequences of the enzymes from Pr. dulcis, inverse PCR method was used for cloning of a putative PmHNL (PmHNL2) gene from a Pr. mume seedling. Then the cDNA for the enzyme was cloned. The deduced amino acid sequence was found to be highly similar (95%) to that of an enzyme from Pr. serotina, isozyme 2. The recombinant Pichia pastoris transformed with the PmHNL2 gene secreted an active enzyme in glycosylated form.
- 2011-02-23
著者
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Sakai Yasuyoshi
Division Of Applied Life Sciences Graduate School Of Agriculture Kyoto University
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Yurimoto Hiroya
Division Of Applied Life Sciences Graduate School Of Agriculture Kyoto University
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Asano Y
National Inst. Genetics Shizuoka
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Fukuta Yasuhisa
Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University
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Komeda Hidenobu
Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University
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KATO YASUO
Biotechnology Research Center, Faculty of Engineering, Toyama Prefectural University
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Asano Yasuhisa
Biotechnology Res. Center And Dep. Of Biotechnology Toyama Prefectural Univ.
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Komeda Hidenobu
Biotechnology Res. Center And Dep. Of Biotechnology Toyama Prefectural Univ.
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Komeda Hidenobu
Biotechnology Research Center Toyama Prefectural University
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Nanda Samiko
Biotechnology Research Center And Department Of Biotechnology Toyama Prefectural University
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Fukuta Yasuhisa
Biotechnology Research Center And Department Of Biotechnology Toyama Prefectural University
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Kato Yasuo
Biotechnology Research Center And Department Of Biotechnology Toyama Prefectural University
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Nanda Samik
Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University
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