内生微蛋白EMBOW的结构性表征揭示了WDR5交互部位识别的另一个MRT动机
Yang Yang1, Yan Pan1, Shuting Zhang1
1School of Life Sciences, Anhui University, Hefei, China.
The FEBS journal
|February 14, 2026
概括
通过一种新的Met-Arg-Thr (MRT) 基因,WD重复含有蛋白5 (WDR5) 与EMBOW相互作用. 这一发现扩大了对WDR5相互作用和染色体调节的理解.
科学领域:
- 分子生物学分子生物学
- 结构生物学 结构生物学
- 染色体规则 染色体规则 染色体规则
背景情况:
- 含WD重复蛋白5 (WDR5) 是一种关键的染色体调节剂.
- 通过WDR5交互 (WIN) 网站,WDR5与合作伙伴进行互动.
- 在此之前,WDR5的内源微蛋白结合剂 (EMBOW) 与WDR5的相互作用机制是未知的.
研究的目的:
- 为了阐明EMBOW-WDR5相互作用的分子基础.
- 在WDR5 WIN网站中识别EMBOW的绑定图案.
- 为了探索替代WIN站点识别签名.
主要方法:
- 用EMBOW化物复合的WDR5的X射线晶体学.
- 生物化学结合试验 生物化学结合试验
- 对EMBOW和相关的突变分析.
主要成果:
- 透露的晶体结构显示EMBOW通过Met1-Arg2-Thr3 (MRT) 三合体与WDR5 WIN位点结合.
- 大量Met1占据了WIN网站口袋,而Thr3对于结合亲和关系至关重要.
- 在其他WDR5交互器中也存在MRT图案,如RBM15和ZSCAN10.
结论:
- 该MRT三元体代表了一个新的WDR5 WIN站点识别图案.
- 这一发现扩大了WDR5相互作用的已知序列空间.
- 该研究定义了EMBOW-WDR5相互作用的分子基础,影响了染色体调节研究.
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