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与双歧杆菌分类学相关的葡萄糖发酵途径

Pathway of glucose fermentation in relation to the taxonomy of bifidobacteria.

作者信息

de Vries W, Stouthamer A H

出版信息

J Bacteriol. 1967 Feb;93(2):574-6. doi: 10.1128/jb.93.2.574-576.1967.

Abstract

Cell-free extracts of 17 strains of Bifidobacterium bifidum (Lactobacillus bifidus) were examined for the presence of aldolase, glucose-6-phosphate dehydrogenase, and fructose-6-phosphate phosphoketolase. All strains turned out to lack aldolase, an enzyme unique to glycolysis, and glucose-6-phosphate dehydrogenase, characteristic of the hexosemonophosphate pathway. In all strains, fructose-6-phosphate phosphoketolase could be demonstrated. It can be concluded that bifidobacteria ferment glucose via a pathway which is different from those found in members of the genus Lactobacillus. The results strengthen the previous suggestions that classification of the bifidobacteria in the genus Lactobacillus is not justified.

摘要

对17株双歧双歧杆菌(双歧乳酸杆菌)的无细胞提取物进行了检测,以确定是否存在醛缩酶、葡萄糖-6-磷酸脱氢酶和果糖-6-磷酸磷酸酮醇酶。结果发现,所有菌株均缺乏醛缩酶(糖酵解特有的一种酶)和葡萄糖-6-磷酸脱氢酶(磷酸己糖途径的特征酶)。在所有菌株中,均可检测到果糖-6-磷酸磷酸酮醇酶。可以得出结论,双歧杆菌通过一种不同于乳酸杆菌属成员的途径发酵葡萄糖。这些结果进一步证明了之前的观点,即把双歧杆菌归为乳酸杆菌属是不合理的。

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