Production, Purification, and Characterization of D-Aminoacylase from Alcaligenes xylosoxydans subsp. xylosoxydans A-6
スポンサーリンク
概要
- 論文の詳細を見る
The best inducers for D-aminoacylase from Alcaligenes xylosoxydans subsp. xylosoxydans A-6(Alcaligenes A-6) were a poor substrate, N-acetyl-γ-methyl-D-leucine, and an inhibitor, N-acetyl-D-alloisoleucine. The enzyme has been homogeneously purified. The molecular weight of the native enzyme was estimated to be 58,000 by gel filtration. A subunit molecular weight of 52,000 was measured by SDS-PAGE, indicating that the native protein is a monomer. The isoelectric point was 5.2. The enzyme was specific to the D-isomer and hydrolyzed N-acetyl derivatives of D-leucine, D-phenylalanine, D-norleucine, D-methionine, and D-valine, and also N-formyl, N-butyryl, and N-propionyl derivatives of D-leucine. The K_m for N-acetyl-D-leucine was 9.8 mM. The optimum pH and temperature were 7.0 and 50℃, respectively. The stabilities of pH and temperature were 8.1 and 40℃. D-Aminoacylases from three species of the genus Alcaligenes differ in inducer and substrate specificities, but are similar with respect to molecular weight and N-terminal amino acid sequence.
- 社団法人日本農芸化学会の論文
- 1993-07-23
著者
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酒井 謙二
九大院生資環
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Sakai Kenji
Department of Plant Resources, Kyushu University
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WAKAYAMA Mamoru
Department of Biotechnology, Faculty of Life Sciences, Ritsumeikan University
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Miura Y
Department Of Applied Biological Science Tokyo Noko University
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Miura Yutaka
Applied Bioresearch Center Kirin Brewry Co. Ltd.
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Miura Yutaka
Department Of Agricultural Chemistry Faculty Of Agriculture The University Of Tokyo
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MORIGUCHI Mitsuaki
Department of Applied Chemistry, Faculty of Engineering, Oita University
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Miyamoto Yoshiro
Department Of Biochemical Engineering Faculty Of Computer Science And System Engineering Kyushu Inst
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Wakayama Mamoru
Department Of Bioscience And Biotechnology Faculty Of Science And Engineering Ritsumeikan University
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Moriguchi Mitsuaki
Department Of Food And Bioscience Beppu University
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Moriguchi Mitsuaki
Department Of Applied Chemistry Faculty Of Engineering Oita University
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Sakai Kenji
Department Of Environmental Chemistry And Engineering Faculty Of Engineering Oita University
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SAKAI Kenji
Research Institute for Theoretical Physics Hiroshima University
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Sakai Kenji
Department Of Drug Metabolism And Pharmacokinetics Nippon Boehringer Ingelheim Co. Ltd.
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Miyamoto Yoko
Laboratory Of Biochemistry Faculty Of Agriculture Kyushu University
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Sakai Kenji
Department Of Applied Chemistry Faculty Of Engineering Oita University
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