摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a purine nucleoside by a fermentation method. SOLUTION: Bacteria, belonging to the genus Escherichia of microorganisms in which feedback inhibition of phosphoribosyl pyrophosphate amidotransferase and/or phosphoribosyl pyrophosphate synthetase is removed, and having purine nucleoside-producing abilities, are cultured in a medium to allow the purine nucleoside to be formed and accumulated, and the purine nucleoside is collected. COPYRIGHT: (C)2007,JPO&INPIT
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