Biochemical Analysis of a Novel Lipolytic Enzyme YvdO from Bacillus subtilis 168

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概要

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• The predicted amino acid sequence of Bacillus subtilis yvdO exhibits similarity to that of the proteins belonging to the patatin family of lipolytic enzymes. In the present study, YvdO was overproduced in Escherichia coli and purified, and its enzymatic properties were determined. YvdO hydrolyzed p-nitrophenyl fatty acid esters. The enzyme was specific to middle-chain fatty acids, and its optimum pH was approximately 7.5. It maintained 86% of its initial activity after incubation for 30 min at 80 °C, and its secondary structure was retained at up to 80 °C. Free myristic acid was detected as the product of the reaction with YvdO and 1-myristoly-2-lyso-sn-glycero-3-phosphocholine, while YvdO did not hydrolyze 1,2-dimyristoly-sn-glycero-3-phosphocholine. These results suggest that YvdO is a novel thermostable lipolytic enzyme that has the ability to hydrolyze lysophospholipids.

• 社団法人 日本農芸化学会の論文

著者

• Hemmi Hisashi

  Department Of Biomolecular Engineering Graduate School Of Engineering Tohoku University

• Hemmi Hisashi

  Dep. Of Applied Molecular Biosciences Graduate School Of Bioagricultural Sciences Nagoya Univ.

• Kato Shiro

  Department of Applied Molecular Biosciences, Graduate School of Bioagricultural Sciences, Nagoya Uni

• Yoshimura Tohru

  Department of Applied Molecular Biosciences, Graduate School of Bioagricultural Sciences, Nagoya Uni

• MORIYAMA Ryuichi

  Department of Food and Nutritional Sciences, College of Bioscience and Biotechnology, Chubu Universi

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