对受体激酶信号的比较蛋白质基因分析揭示了强制植物口腔发育的关键贩运组件
Pengfei Bai1,2, Minh Huy Vu1,2, Chiaki Komatsu1
1Howard Hughes Medical Institute, The University of Texas, Austin, TX 78712, USA.
bioRxiv : the preprint server for biology
|August 8, 2025
概括
像ERECTA这样的植物受体激酶的控制开发. 这项研究揭示了ERECTA与内体贩运机器相互作用,这对于正确的口腔发育和信号提供至关重要.
科学领域:
- 植物分子生物学 植物分子生物学
- 细胞信号传递 细胞信号传递
- 发育生物学是发展生物学.
背景情况:
- 受体激酶调节关键的植物过程.
- 埃雷克塔家族的激酶是植物发育的关键,特别是口腔形成.
- 了解它们的调节和动态是至关重要的,但有限.
研究的目的:
- 为了阐明ERECTA介导的信号通路的蛋白质组景观.
- 为了比较ERECTA家族激酶的相互作用和近接组.
- 为了确定ERECTA信号传递和内细胞分裂的新型调节者.
主要方法:
- 用尾标记的亲和度-净化质谱 (ET-AP) 来识别直接相互作用者.
- 基于TurboID的近距离标记质谱法 (TbID-PL) 来捕获短暂的关联.
- 对ERECTA信号网络组件进行比较蛋白质组学分析.
主要成果:
- ET-AP确定了已知的受体复合体成员.
- TbID-PL揭示了与内体贩运的关联,包括克拉特林介导内细胞分裂 (CME) 机制.
- 特定的酸氨基醇结合类克拉组合蛋白 (PICALMs) 被确定为ERECTA内部化的调节者.
- 皮卡姆突变破坏了ERECTA的内细胞分裂,导致了过度的口腔集.
结论:
- 创建了ERECTA信号网络的蛋白质天文图谱.
- 通过内分细胞分裂的ERECTA激酶内部化对于活性信号传导至关重要.
- 这一过程对于植物正确的口腔模式至关重要.
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