Abstract
Nucleoside phosphorylases (NPases) were found to be induced in Enterobacter aerogenes DGO-04, and cytidine and cytidine 5′-monophosphate (CMP) were the best inducers. Five mmol/L to fifteen mmol/L cytidine or CMP could distinctly increase the activities of purine nucleoside phosphorylase (PNPase), uridine phosphorylase (UPase) and thymidine phosphorylase (TPase) when they were added into medium from 0 to 8 h. In the process of enzymatic synthesis of adenine arabinoside from adenine and uracil arabinoside with wet cells of Enterobacter aerogenes DGO-04 induced by cytidine or CMP, the reaction time could be shortened from 36 to 6 h. After enzymatic reaction the activity of NPase in the cells induced remained higher than that in the cells uninduced.
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Project (No. 07C26213101283) supported by the Innovation Fund for Technology Based Firms from the Ministry of Science and Technology of China
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Wei, Xk., Ding, Qb., Zhang, L. et al. Induction of nucleoside phosphorylase in Enterobacter aerogenes and enzymatic synthesis of adenine arabinoside. J. Zhejiang Univ. Sci. B 9, 520–526 (2008). https://doi.org/10.1631/jzus.B0710618
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DOI: https://doi.org/10.1631/jzus.B0710618
Key words
- Nucleoside phosphorylase (NPase)
- Enterobacter aerogenes
- Cytidine
- Cytidine 5′-monophosphate (CMP)
- Adenine arabinoside