Probing the specific ion effects of biocompatible hydrated choline ionic liquids on lactate oxidase biofunctionality in sensor applications.

Probing the specific ion effects of biocompatible hydrated choline ionic liquids on lactate oxidase biofunctionality in sensor applications.
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探讨生物相容性水合胆碱离子液体对传感器应用中乳酸氧化酶生物功能的特定离子效应。

DOI:
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发表时间:
2014
期刊:
Physical Chemistry, Chemical Physics - PCCP
影响因子:
--
通讯作者:
D. Diamond
D. Diamond
中科院分区:
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文献类型:
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作者:
V. Curto;Stefan Scheuermann;R. Owens;Vijayaraghavan Ranganathan;D. Macfarlane;F. Benito‐Lopez;D. Diamond

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本文研究了一系列生物相容性水合胆碱基离子液体(ILs)对乳酸氧化酶(LOx)的离子效应。二级结构分析显示,在水合IL的蛋白质构象的变化,而热展开/聚集动力学显示在IL的存在或不存在下的不同配置文件。此外,在90 °C下热变性的LOX在氯离子和磷酸二氢根阴离子的存在下显示出残余活性。动力学和寿命的研究也进行了,离子液体的生物催化活性的酶的离子效应提供了更好的理解。
This paper presents an extended study on the ion effects of a series of biocompatible hydrated choline based ionic liquids (ILs) on lactate oxidase (LOx), an important enzyme in biosensing technology for the in vitro detection of lactic acid. Secondary structural analysis revealed changes in the protein conformation in hydrated ILs, while thermal unfolding/aggregation dynamics showed different profiles in the presence or absence of ILs. Moreover, LOx thermally denaturised at 90 °C showed residual activity in the presence of chloride and dihydrogen phosphate anions. Kinetic and lifetime studies were also performed, providing a better understanding of the ion effects of ILs on the biocatalytic activity of the enzyme.
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