期刊
ANALYST
卷 139, 期 12, 页码 3127-3136出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4an00152d
关键词
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资金
- Slovenian Research Agency (ARRS) for Young researchers [1000-08-310045]
- ANPCyT [PICT 2008-1848, 2012-2087]
- University of Maribor
- Slovene Human Resources Development and Scholarship Fund
- Ad Futura funding of research collaboration for Slovene PhD students in foreign countries [11012-21/2009-4]
In this work we demonstrate the efficient immobilization of histidine 6-tagged organophosphate hydrolase (His(6)-OPH), an organophosphate-degrading enzyme, on mesoporous titania thin films. This permits the use of the biocatalyst films as efficient tools in the detection/detoxification of paraoxon. His6-OPH was immobilized on mesoporous thin films with uniform (9 nm) and bimodal (13-38 nm) pore size distribution, through covalent attachment and physical adsorption. The biocatalyst films show good activity, and enhanced stability with respect to the free enzyme at extreme conditions of pH and temperature, especially around neutral pH and room temperature. In addition, the bioactive films can be easily separated from the reaction media and reused multiple times without significant loss of activity.
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