The N-Terminal Regions of β and γ Subunits Lower the Solubility of Adenosylcobalamin-Dependent Diol Dehydratase

DOI Web Site Web Site PubMed 被引用文献5件 参考文献35件
  • TOBIMATSU Takamasa
    Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University
  • KAWATA Masahiro
    Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University
  • TORAYA Tetsuo
    Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University

書誌事項

タイトル別名
  • The N-Terminal Regions of .BETA. and .GAMMA. Subunits Lower the Solubility of Adenosylcobalamin-Dependent Diol Dehydratase
  • N Terminal Regions of ベータ and ガンマ Subunits Lower the Solubility of Adenosylcobalamin Dependent Diol Dehydratase

この論文をさがす

抄録

Adenosylcobalamin-dependent diol dehydratase is one of essential components of carboxysome-like polyhedral bodies. It exists as a heterohexamer (αβγ)2, and its activity is recovered in a precipitant fraction of Klebsiella oxytoca and overexpressing Escherichia coli cells. Limited proteolysis of the enzyme with trypsin converted the enzyme into a highly soluble form without loss of enzyme activity. The N-terminal amino acid sequencing of the enzyme thus solubilized indicated that the N-terminal 20 and 16 amino acid residues had been removed from the β and γ subunits, respectively. Mutant enzymes with the same N-terminal truncations of either or both of the β and γ subunits were expressed on a high level in E. coli cells. All the mutant enzymes obtained were expressed in a soluble, active form. These results indicate that the N-terminal regions of the β and γ subunits lower the solubility of diol dehydratase. The mutant enzyme with the N-terminal truncations of both β and γ subunits was essentially indistinguishable in catalytic properties from recombinant wild-type enzyme or the enzyme purified from K. oxytoca in a soluble form.

収録刊行物

被引用文献 (5)*注記

もっと見る

参考文献 (35)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ