Fiber optic biosensor of immobilized firefly luciferase

被引：0
|
作者：
Cai, Jin [1 ]
Meng, Wen-Fang [2 ]
Ji, Xin-Song [3 ]
机构：
[1] Coll. of Mat. and Chem. Eng., Zhejiang Univ., Hangzhou 310027, China
[2] Sir Run Run Shaw Hospital, Zhejiang Univ., Hangzhou 310016, China
[3] Inst. of Biochem. and Cell Biol., Chinese Acad. of Sci., Shanghai 200031, China
来源：
Journal of Zhejinag University: Science | 2002年 / 3卷 / 05期
关键词：
Adenosinetriphosphate - Enzymes - Fiber optic sensors - pH;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Luciferase from firefly lantern extract was immobilized on CNBr-activated Sepharose 4B. The kinetic properties of immobilized luciferase were extensively studied. The Km′ for D-luciferin is 11.9 μmol/L, the optimum pH and temperature for Sepharose-bound enzyme were 7.8 and 25°C respectively. A luminescence fiber optic biosensor, making use of immobilized crude luciferase, was developed for assay of ATP. The peak light intensity was linear with respect to ATP concentration in range of 10-9-10-5 mol/L. A biological application was also demonstrated with the determination of serum ATP from rats bred in low versus normal oxygen environments.
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页码：563 / 566
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