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由TBBPS-BME诱导的人体血清白蛋白 (HSA) 的结构和功能变化:一个光谱,计算和分子动力学研究

Wei Zhang¹, Linna Gao², Shuyuan Zhang²

¹Jiangxi Key Laboratory of Flood and Drought Disaster Defense, Jiangxi Academy of Water Science and Engineering, Nanchang, 330029, China; Jiangxi Provincial Eco-hydraulic Technology Innovation Center of Poyang Lake Basin, Jiangxi Academy of Water Science and Engineering, Nanchang, 330029, China; Research Center for Water Resources and Ecological Environment of Poyang Lake, The Ministry of Water Resources of the People's Republic of China, Nanchang, 330029, China.

Chemico-biological interactions

|April 2, 2025

概括

甲基乙 (TBBPS-BME) 与人体血清白蛋白 (HSA) 结合,改变其结构和功能. 这种由疏水力驱动的相互作用揭示了与TBBPS-BME暴露相关的潜在健康风险.

科学领域:

环境化学环境化学
生物化学生化学
毒理学毒理学毒理学

背景情况:

甲基乙 (TBBPS-BME) 是一种TBBPA的替代品,具有更高的生物积累潜力.
了解TBBPS-BME与生物分子的相互作用对于评估人类健康风险至关重要.

研究的目的:

调查由TBBPS-BME诱导的人类血清白蛋白 (HSA) 的结构和功能变化.
阐明TBBPS-BME和HSA之间的结合机制和力量.

主要方法:

使用了光谱技术 (光火).
使用了计算建模,包括分子动力学模拟和氨酸扫描.
确定了结合常数和相互作用位点.

主要成果:

TBBPS-BME在HSA中诱导光火,主要是通过I位点的疏水相互作用.
HSA结构发生变化,阿尔法螺旋体含量降低,灵活性增加.
TBBPS-BME影响HSA的雌激酶类功能,可能通过与Lys199和Lys195.5的相互作用.
稳定的TBBPS-BME-HSA复合物形成,通过键稳定,并涉及关键残留物,如Trp214,Phe211,Arg218,Lys199和His242.

结论:

TBBPS-BME与HSA结合,导致显著的结构和功能修改.
结合机制涉及特定的氨基酸残留物,并由疏水力和键稳定.
这项研究强调了与TBBPS-BME暴露相关的潜在健康危害,因为它与HSA的相互作用.

关键词:

氨酸扫描突变分析分析绑定模式绑定模式人类血清专素的人类血清专素在TBBPS-BME中使用.

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