Efficient Conversion of Dinitrile to Mononitrile-Monocarboxylic Acid by Corynebacteriu sp. C5 Cells during Tranexamic Acid Synthesis
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概要
- 論文の詳細を見る
Use of peptone and yeast extract as the nitrogen source together with glucose as the carbon source was effective in the culture of Corynebacterium sp. C5 cells that convert trans-1,4-discyanocyclohexane (t-DCC) to trans-4-cyanocyclohexane-1-carboxylic acid (t-MCC). The ratio of nitrile hydratase to amidase that converted t-DCC to t-MCC was 3 : 1,but the stability of the nitrile hydratase was one-tenth that of the amidase. Potassium phosphate buffer (pH 8.5) stabilized the two enzymes and produced maximum activity. High yields of t-MCC (99.4%) were produced from a high concentration of t-DCC (40%) in a resting cell system t-DCC crystals disappeared, with the solution becoming clear as the reaction proceeded. The tranexamic acid synthesized from the t-MCC produced by the resting cells was of very high quality; 99.97% trans-isomer.
- 社団法人日本生物工学会の論文
- 1992-02-25
著者
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OTSUBO KAZUMASA
Pharmaceutical Research and Development Department, Asahi Chemical Industry Company Ltd.,
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YAMAMOTO KEIZOU
Pharmaceutical Research and Development, Asahi Chemical Industry Company Ltd.,
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Ueno Yoshiyuki
Kajima Technical Research Institute
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Yamamoto K
Graduate School Of Biostudies Kyoto University
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TANI Yoshiki
Department of Agricultural Chemistry, Faculty of Agriculture, Kyoto University
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Ueno Yoshiyuki
Marine Biotechnology Institute Kamaishi Laboratories
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Otsubo Kazumasa
Technology Development Department Pharmaceutical Production & Technology Center Asahi Chemical I
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Otsubo Kazumasa
Pharmaceutical Research And Development Department Asahi Chemical Industry Company Ltd.
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Ueno Y
Kajima Technical Research Institute
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UENO YUJI
Pharmaceutical Research and Development Department, Asahi Chemical Industry Company Ltd.,
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YAMANE HIROYUKI
Pharmaceutical Research and Development Department, Asahi Chemical Industry Company Ltd.,
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KOMATSU KEN-ICHI
Pharmaceutical Research and Development Department, Asahi Chemical Industry Company Ltd.,
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Tani Yoshiki
Department Of Agricultural Chemistry Kyoto University
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Yamane Hiroyuki
Pharmaceutical Research And Development Department Asahi Chemical Industry Company Ltd.
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Yamamoto Keizou
Pharmaceutical Department Asahi Chemical Industry Co. Ltd.
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Yamamoto K
Department Of Chemistry Nara Medical University
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KOMATSU Ken-ichi
Laboratory for Chemistry, Institute for Life Science Research, Asahi Chemical Industry Co., Ltd.
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Komatsu K
Laboratory For Chemistry Institute For Life Science Research Asahi Chemical Industry Co. Ltd.
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Komatsu Ken-ichi
Pharmaceutical Research And Development Department Asahi Chemical Ind. Co. Ltd.
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Tani Yoshiki
Department Of Agricultural Chemistry Faculty Of Agriculture Kyoto University
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Tani Yoshiki
Department Of Agricultural Chemistry College Of Agriculture Kyoto University
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