植物染色体A和植物染色体B都通过进化保存的OPM-APA相互作用与植物染色体交互因子相互作用
Jaehoon Jeong1, Yongju Lee1, Giltsu Choi2
1Department of Biological Sciences, KAIST, Daejeon, Korea.
Nature communications
|April 26, 2025
概括
植物染色体 (phyA) 和 (phyB) 通过保存的植物染色体C终端输出模块 (phyOPM) -APA相互作用与PIF相互作用. 这种古老的相互作用,独立于光线,调节PIF3降解.
科学领域:
- 植物生物学 植物生物学
- 摄影受体信号传输 摄影受体信号传输
- 分子进化分子进化
背景情况:
- 植物染色体 (phyA,phyB) 是关键的红色/远红色光光受体,调节植物发育.
- 植物染色体通过特定的结合基因与植物染色体相互作用因子 (PIFs) 相互作用.
- 已知phyB的N端光传感模块 (phyBPSM) 与APB的相互作用,但APA与phyAPSM的相互作用尚不清楚.
研究的目的:
- 阐明植物染色体 (phyA,phyB) 和PIF之间的相互作用机制.
- 研究APA和APB动机在植物染色体-PIF相互作用中的作用.
- 为了确定这些相互作用的进化保存.
主要方法:
- 使用生物化学测试研究了植物染色体-PIF相互作用.
- 有关光传感模块 (PSM) 和输出模块 (OPM) 的特征绑定接口.
- 对比不同植物物种之间的相互作用,包括Arabidopsis和Marchantia.
主要成果:
- 无论是phyA还是phyB,都通过植物染色输出模块 (phyOPM) 与APA相互作用.
- phyB还通过其光传感模块 (phyBPSM) 与APB相互作用.
- 物理OPM-APA相互作用是古老的,保存在Arabidopsis和Marchantia,并促进PIF3降解独立于光.
结论:
- 物理OPM-APA相互作用是植物染色体-PIF信号传递的保存,古老的机制.
- 依赖光的phy-APA相互作用源于P-phyPSM和APA之间对phyOPM的竞争.
- 这项研究揭示了对植物染色体信号通路的分子基础和演变的新见解.
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