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多级计算剖析CCRL2介导的化学物质呈现
Arianna Migliorini1, Samuele Di Cristofano1, Klevia Dishnica2,3
1Department of Molecular Medicine, Laboratory Affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Sapienza University of Rome, Viale Regina Elena 291, Rome 00161, Italy.
Journal of chemical information and modeling
|December 11, 2025
概括
化基因类受体CCRL2向CMKLR1呈现化学素,用于免疫细胞的招募. 计算研究揭示了绑定接口,解释了CCRL2.
科学领域:
- 免疫学 免疫学 免疫学
- 结构生物学 结构生物学
- 计算化学计算化学
背景情况:
- 化基因类受体CCRL2是一种不典型的GPCR,参与免疫细胞招募.
- CCRL2向其同类受体CMKLR1 (ChemerinR1) 呈现化学素.
- 对于CCRL2 - 化学素识别的结构基础尚不清楚.
研究的目的:
- 使用计算方法研究CCRL2-化学素相互作用的结构决定因素.
- 阐明CCRL2向CMKLR1.1呈现化学素的机制.
- 探索在绑定接口上的序列变化的功能影响.
主要方法:
- 集成粗粒度和全原子分子动力学模拟的多规模计算研究.
- 对CCRL2-化学素和CCRL2-化学素-CMKLR1复合物的结构建模.
- 将自然发生的误解变体映射到已识别的绑定接口上.
主要成果:
- 鉴定出了化学素β1链和CCRL2细胞外循环之间的灵活而稳定的结合接口.
- 揭示了基梅林的C端区域仍然可用于CMKLR1的参与.
- 证明了CCRL2 N端和化学素循环之间的稳定静电相互作用 3.
- 建模了一个三元复合体,表明CCRL2对齐化学素,以有效激活CMKLR1.
- 建议序列变化可以影响受体-连接体的稳定性和功能.
结论:
- 为CCRL2介导的化学素呈现提供了结构基础.
- 为CCRL2在免疫信号传递中的作用提供了一个机制框架.
- 突出了遗传变异对这种途径介导的免疫反应的潜在影响.
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