通过综合计算模拟,合理选四种具有高亚弗拉托克素B1降解效率的过氧酶
Yufei Wang1, Qing Zhang1, Jingying Pei1
1College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
Journal of agricultural and food chemistry
|September 15, 2025
概括
计算选确定了四种过氧化酶,这些过氧化酶有效降解了阿弗拉托克辛B1 (AFB1). 这些在大肠杆菌中表达的酶表现出性耐受性,并将AFB1排毒成一种不那么有害的化合物,从而推进了真菌毒素减轻策略.
科学领域:
- 生物化学 生物化学
- 酶学 是一种酶学.
- 计算生物学 计算生物学
背景情况:
- 传统的阿弗拉托克辛B1 (AFB1) 降解方法是有限的.
- 由于其毒性和流行程度,AFB1构成重大风险.
研究的目的:
- 开发一种用于识别AFB1降解酶的计算查策略.
- 评估用于AFB1排毒的精选过氧化酶的疗效和特征.
主要方法:
- 对酶进行AFB1降解的计算选.
- 在大肠杆菌中,四种过氧化酶 (ApeLip,KpDyp,TrcLip,VPL2) 的异质表达和净化.
- 酶降解试验,分子动力学模拟和UPLC-QTOF-MS分析.
主要成果:
- 在最佳条件下,四种精选的过氧化酶表现出有效的AFB1降解 (90.06-92.91%).
- 这些酶表现出对性条件的耐受性.
- 分子动力学模拟揭示了范德瓦尔斯相互作用作为主要的结合机制.
- 证实AFB1被化为AFB1-8,9-二二醇,一种毒性较低的代谢物.
结论:
- 为合理的酶发现建立了一个计算和实验框架.
- 已识别的过氧化酶为毒素缓解提供了一个有希望的策略.
- 这种方法可以加速开发有效的解决方案来管理AFB1污染.
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