The Screening, Characterization, and Use of ω-Laurolactam Hydrolase: A New Enzymatic Synthesis of 12-Aminolauric Acid

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概要

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• Several ω-laurolactam degrading microorganisms were isolated from soil samples. These strains were capable of growing in a medium containing ω-laurolactam as sole source of carbon and nitrogen. Among them, five strains (T7, T31, U124, U224, and U238) were identified as Cupriavidus sp. T7, Acidovorax sp. T31, Cupriavidus sp. U124, Rhodococcus sp. U224, and Sphingomonas sp. U238, respectively. The ω-laurolactam hydrolyzing enzyme from Rhodococcus sp. U224 was purified to homogeneity, and its enzymatic properties were characterized. The enzyme acts on ω-octalactam and ω-laurolactam, but other lactam compounds, amides and amino acid amides, cannot be substrates. The enzyme gene was cloned, and the deduced amino acid sequence showed high homology with 6-aminohexanoate-cyclic-dimer hydrolase (EC 3.5.2.12) from Arthrobacter sp. KI72 and Pseudomonas sp. NK87. Enzymatic synthesis of 12-aminolauric acid was performed using partially purified ω-laurolactam hydrolase from Rhodococcus sp. U224.

• 社団法人 日本農芸化学会の論文

著者

• Asano Yasuhisa

  Biotechnology Research Center, Toyama Prefectural University

• Fukuta Yasuhisa

  Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University

• Komeda Hidenobu

  Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University

• Yoshida Yoichi

  Research and Development Headquarters of Ubekousan, Ubekousan

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