蛋白质语言模型识别了阶段分离中涉及的无序,保存的动机
Yumeng Zhang1, Jared Zheng2, Bin Zhang1
1Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA.
bioRxiv : the preprint server for biology
|August 8, 2025
概括
内在无序区域 (IDR) 对于无膜有机体 (MLO) 的形成至关重要. 进化分析揭示了IDR中保存的氨基酸,表明它们是为稳定的MLO选择的关键功能单元.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 进化生物学 进化生物学
背景情况:
- 内在无序区域 (IDR) 对于通过相分离形成无膜有机体 (MLO) 是至关重要的.
- IDRs中的突变可以破坏蛋白质相互作用,导致相变行为和疾病.
- 了解IDRs的进化约束,可以了解基于序列的相位分离.
研究的目的:
- 使用ESM2蛋白语言模型绘制IDRs的残留水平突变耐受性景观.
- 为了研究参与相位分离的IDRs中的进化保护模式.
- 探索IDR和MLO形成中保存的图案之间的关系.
主要方法:
- 利用ESM2蛋白语言模型来预测突变耐受性.
- 分析了IDRs的残留水平突变耐受性景观.
- 对多个序列对齐进行了直接分析,以确认保存.
主要成果:
- 积极参与相位分离的IDR显示出显著的氨基酸保存.
- 保存的残留物包括形成连续序列图案的"贴纸"和"间隔纸".
- 突变约束的ESM2预测与在多个序列对齐中观察到的保全保持一致.
结论:
- 在IDR中保存的图案作为功能单元在稳定的MLO形成的进化选择下起作用.
- 基于蛋白质语言模型的进化分析揭示了相分离的分子语法.
- 这些发现凸显了进化约束对于理解无序蛋白质区域的功能的重要性.
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