| 摘要 |
Nucleoside 5'-phosphate ester is produced by culturing a bacterium belonging to the genus Escherichia having an ability to produce nucleoside 5'-phosphate ester, in which ushA gene and aphA gene do not function normally, in a medium to produce and accumulate nucleoside 5'-phosphate ester in the medium, and collecting the nucleoside 5'-phosphate ester from the medium.
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