A novel thermostable esterase from the thermoacidophilic archaeon Sulfolobus tokodaii strain 7

Yoichi Suzuki, Kenji Miyamoto, Hiromichi Ohta

研究成果: Article査読

41 被引用数 (Scopus)

抄録

We have characterized an esterase expressed from the putative esterase gene (ST0071) selected from the total genome analysis from the thermoacidophilic archaeon Sulfolobus tokodaii strain 7. The ORF was cloned and expressed as a fusion protein in Escherichia coli. The protein was purified with heat treatment, affinity column chromatography, and size exclusion filtration. The optimum activity for ester cleavage against p-nitrophenyl esters was observed at around 70°C and pH 7.5-8.0. The enzyme exhibited high thermostability and also showed activity in a mixture of a buffer and water-miscible organic solvents, such as acetonitrile and dimethyl sulfoxide. From the kinetic analysis, p-nitrophenyl butyrate was found to be a better substrate than caproate and caprylate.

本文言語English
ページ(範囲)97-102
ページ数6
ジャーナルFEMS microbiology letters
236
1
DOI
出版ステータスPublished - 2004 7 1

ASJC Scopus subject areas

  • 微生物学
  • 分子生物学
  • 遺伝学

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