Problem: To provide a microorganism with an ability to produce deoxy polyol dehydrogenase.
Means for Resolution: A microorganism belonging to genus
Enterobacter
with an ability to produce a dehydrogenase for deoxy polyol of the same structure at the positions C2 and C3 as that of ribitol or L-iditol. The bacterial cell IK7 of the genus
Enterobacter
(accession No. NITE P-271). A method for producing deoxy ketose comprising allowing a culture containing the deoxy polyol dehydrogenase obtained by the culturing of the microorganism of the invention or allowing the deoxy polyol dehydrogenase to react with a solution containing deoxy polyol of the same structure at the positions C2 and C3 as that of ribitol or L-iditol to oxidize deoxy polyol to produce the corresponding deoxy ketose and then collecting the deoxy ketose. The deoxy polyol is 1-deoxy-D-allitol, while the corresponding deoxy ketose is 1-deoxy-L-psicose. Otherwise, the deoxy polyol is L-rhamnitol, while the corresponding deoxy ketose is 1-deoxy-L-fructose.
问题:提供一种微
生物具有产生脱氧多元醇脱氢酶的能力。
解决方法:一种属于肠杆菌属(Enterobacter)的微
生物,具有在C2和C3位置与
核糖醇或L-异
鼠李糖具有相同结构的脱氢酶产生能力。该微
生物为肠杆菌属的IK7细胞(存取号为NITE P-271)。一种生产脱氧酮糖的方法,包括使用含有本发明微
生物培养产生的脱氧多元醇脱氢酶的培养物,或者让脱氧多元醇脱氢酶与含有与
核糖醇或L-异
鼠李糖在C2和C3位置具有相同结构的脱氧多元醇的溶液反应,将脱氧多元醇氧化为相应的脱氧酮糖,然后收集脱氧酮糖。其中,脱氧多元醇为1-脱氧-
D-阿洛糖,相应的脱氧酮糖为1-脱氧-L-丝糖。否则,脱氧多元醇为
L-鼠李糖,相应的脱氧酮糖为1-脱氧-
L-果糖。