کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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70137 | 48812 | 2012 | 7 صفحه PDF | دانلود رایگان |
The endo-inulinase gene (EnIA) from Arthrobacter sp. S37 was ligated into the expression vector pINA1317 and over-expressed in Yarrowia lipolytica Po1h. It was found that the endo-inulinase activity and specific endo-inulinase activity produced by the transformant 1317-EnIA were 16.7 U/mL and 93.4 U/mg, respectively. The recombinant EnIA was purified and characterized. The molecular weight of the purified rEnIA was 78.9 kDa. The optimal pH and temperature of the purified rEnIA were 4 and 50 °C, respectively. The purified rEnIA was stable in the temperature range of 4–40 °C and in the pH range of 2–8. The activity of rEnIA was greatly stimulated in the presence of Li+. The purified rEnIA could actively convert inulin into disaccharides.
The purified recombinant endo-inulinase (A) and oligosaccharides produced from inulin by the purified recombinant endo-inulinase (B).Figure optionsDownload as PowerPoint slideHighlights
► The endo-inulinase gene (EnIA) from Arthrobacter sp. S37 was over-expressed in Yarrowia lipolytica Po1h.
► The molecular weight of the purified rEnIA was 78.9 kDa. The optimal pH and temperature of the purified rEnIA were 4 and 50 °C, respectively.
► The activity of rEnIA was greatly stimulated in the presence of Li+.
► The purified rEnIA could actively convert inulin into disaccharides.
Journal: Journal of Molecular Catalysis B: Enzymatic - Volume 74, Issues 1–2, January 2012, Pages 109–115