核结合蛋白的AlphaFold引导的结构分析
Xin Yang1,2,3, Haoqiang Zhu1,2,3, Liuxin Shi1,3
1Key Laboratory of Epigenetic Regulation and Intervention, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
Nucleic acids research
|August 12, 2025
概括
我们开发了一个基于AlphaFold的工具来识别核细胞结合蛋白,发现了ARID4A/B和RNF168.8. RNF168的二元化增强了其核酶体结合,影响了表观遗传调节.
科学领域:
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 结构生物学 结构生物学
背景情况:
- 核细胞是调节基因表达的基本色素单元.
- 了解核细胞蛋白相互作用是解读基因调节的关键.
- 鉴定新型核细胞结合蛋白仍然是一个挑战.
研究的目的:
- 开发和验证基于AlphaFold的算法,用于识别核细胞结合蛋白.
- 为了发现与核细胞结合的新型蛋白质.
- 为了研究蛋白质二分化在核酶体结合中的作用.
主要方法:
- 利用AlphaFold进行人类核蛋白的结构预测.
- 对7600多种人类核蛋白进行了选,以检测核体结合潜力.
- 使用已知的核细胞酸补丁结合蛋白作为基准的验证预测.
- 使用冷电子显微镜进行RNF168-核相互作用的结构分析.
主要成果:
- 实现了核细胞结合蛋白的77%的预测成功率.
- 确定了ARID4A和ARID4B作为新型核细胞结合蛋白.
- 证明RNF168的二元化增强了它与核细胞的结合亲和力.
- 通过冷电子显微镜证实了RNF168-核酶体相互作用结构.
结论:
- 开发的算法提供了一种快速有效的方法来发现核细胞结合蛋白.
- ARID4A和ARID4B是新发现的核细胞组结合蛋白.
- 乌比奎丁E3酶二分化通过增强的核细胞体结合在表观遗传调节中起着重要作用.
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