ヤマグチ ルイ   Rui Yamaguchi
  山口 類
   所属   熊本保健科学大学  保健科学部 医学検査学科
   熊本保健科学大学大学院  保健科学研究科 保健科学専攻
   職位   准教授
言語種別 英語
発行・発表の年月 2010/02
形態種別 研究論文(学術雑誌)
査読 査読あり
標題 Halophilic beta-lactamase as a new solubility- and folding-enhancing tag protein: production of native human interleukin 1alpha and human neutrophil alpha-defensin.
執筆形態 共著
掲載誌名 Appl Microbiol Biotechnol.
掲載区分国外
巻・号・頁 86,pp.649-658
総ページ数 9
著者・共著者 Tokunaga H, Saito S, Sakai K, Yamaguchi R, Katsuyama I, Arakawa T, Onozaki K, Arakawa T, Tokunaga M
概要 The amino acid composition of halophilic enzymes is characterized by an abundant content of acidic amino acid, which confers to the halophilic enzymes extensive negative charges at neutral pH and high aqueous solubility. This negative charge prevents protein aggregation when denatured and thereby leads to highly efficient protein refolding. Beta-lactamase from periplasmic space of moderate halophile (BLA), a typical halophilic enzyme, can be readily expressed as a native, active form in Escherichia coli cytoplasm. Similar to other halophilic enzymes, BLA is soluble upon denaturation by heat or urea treatments and, hence, can be efficiently refolded.