Isolation and some properties of sorbitol oxidase from Streptomyces sp. H-7775

被引:10
|
作者
Hiraga, K [1 ]
Kitazawa, M [1 ]
Kaneko, N [1 ]
Oda, K [1 ]
机构
[1] KYOTO INST TECHNOL, FAC TEXT SCI, DEPT APPL BIOL, SAKYO KU, KYOTO 606, JAPAN
关键词
sorbitol oxidase; sorbitol; oxidase; Streptomyces sp;
D O I
10.1271/bbb.61.1699
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A sorbitol oxidase (SOX) was found in the cell-free extract of a strain isolated from soil, The strain was classified and designated as Streptomyces sp. H-7775. SOX is constitutively expressed in the cell, The molecular weight of SOX that purified from the cell-free extract was 45,000, The optimum pH and the K-m for sorbitol were 6.5-7.5 and 0.26mM, respectively, The prosthetic group was a covalently bound FAD, SOX catalyzed oxidation of D-sorbitol to glucose and hydrogen peroxide without any requirements of exogenous cofactors, SOX did not react with glucose, a reaction product of D-sorbitol, This feature is useful in its application for diagnosis.
引用
收藏
页码:1699 / 1704
页数:6
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