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导航侧面反应用于强大的色度检测银氧化酶活性
Ying Sin Koo1, Adrielle Xianwen Chen1, Charlotte Y J Tay1
1Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), 8 Biomedical Grove, #07-01 Neuros Building, Singapore 138665, Republic of Singapore.
Analytical chemistry
|February 28, 2025
概括
标准的2.2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) 对银河糖氧化酶的测定是不准确的,因为副作用. 一种新的2,4-dinitrophenylhydrazine测定方法可以在更广泛的基质中提供准确的酶活性查.
科学领域:
- 生物化学 生物化学
- 酶动力学 酶动力学
- 测试开发的发展.
背景情况:
- 颜色测量试验被广泛用于酶活性查,因为它们的速度和可扩展性.
- 然而,对于银河糖氧化酶的2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) 试验容易出现因副作用和试剂不稳定性引起的不准确性.
- 这些局限性限制了测试的实用性和可靠研究的基质范围.
研究的目的:
- 为了识别干扰银河糖氧化酶活性ABTS色度测试的化合物.
- 阐明这些干扰性副作用背后的机制.
- 开发一种更强大,更准确的银河糖氧化酶活性查试验.
主要方法:
- 研究了特定化合物类 (自由基捕食者,,不和基) 与ABTS测定不相容性的问题.
- 在中性条件下与异醇一起使用2,4-丁丁基化开发了一种新型检测方法.
- 验证了新试验与之前识别的干扰化合物的兼容性.
主要成果:
- 确定了与ABTS测定不相容的自由基清除剂,具有电子捐赠替代物的和β,γ-不和的基.
- 证明这些化合物会导致火或 adduct 形成,导致不准确的色度测量.
- 开发的2,4-dinitrophenylhydrazine试验显示与这些化合物具有很高的兼容性 (R2 = 0.98,0.97,0.88).
结论:
- 对于银河糖氧化酶的ABTS测定在某些化学结构的存在下是不可靠的,限制了其应用.
- 在中性条件下使用2,4-dinitrophenylhydrazine的修改试验为银河糖氧化酶活性查提供了可靠的替代方案.
- 这种改进的测试扩大了基质范围,促进了银河糖氧化酶的更广泛应用.
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