Purification and characterization of mannose isomerase from Agrobacterium radiobacter M-I

  • HIROSE Jun
    Department of Applied Chemistry, Faculty of Engineering, Miyazaki University
  • MAEDA Kazuhiko
    Department of Applied Chemistry, Faculty of Engineering, Miyazaki University
  • YOKOI Haruhiko
    Department of Applied Chemistry, Faculty of Engineering, Miyazaki University
  • TAKASAKI Yoshiyuki
    Department of Applied Chemistry, Faculty of Engineering, Miyazaki University

書誌事項

タイトル別名
  • Purification and Characterization of Mannose Isomerase from Agrobacterium radiobacter M-1.

この論文をさがす

抄録

A mannose isomerase from Agrobacterium radiobacter M-1 (formerly Pseudomonas sp. MI) was purified to electrophoretic homogeneity and characterized. A cell-free extract was separated by ammonium sulfate fractionation, Butyl-Toyopearl 650M, DEAE-Sepharose and hydroxylapatite column chromatography. Its molecular mass was estimated to be 44 kDa by SDS-PAGE and 90 kDa by gel filtration, in which the enzyme is most likely a dimer composed of two identical subunits. The purified enzyme had an optimum pH at 8.0, an optimum temperature at 60°C, a pI of 5.2 and a Km of 20 mM, and specifically converted D-mannose and D-lyxose to ketose. The N-terminal amino acid sequence was identified.

収録刊行物

被引用文献 (2)*注記

もっと見る

参考文献 (17)*注記

もっと見る

詳細情報 詳細情報について

問題の指摘

ページトップへ