在进化过程中保存的蛋白质基因驱动植物核骨架和核孔之间的相互作用
Sarah Mermet1, Maxime Voisin1, Joris Mordier1
1iGReD, Université Clermont Auvergne, CNRS, INSERM, 63001 Clermont-Ferrand, France.
The Plant cell
|September 22, 2023
概括
研究人员在Arabidopsis thaliana中确定了关键的蛋白质动图,这些动图将核骨架与核外联系起来. 这些发现揭示了植物中核孔和核骨架之间的物理联系.
科学领域:
- 植物细胞生物学 植物细胞生物学
- 分子植物科学 分子植物科学
- 核建筑的核架构
背景情况:
- 核骨架是核外下面的丝状网络,对核形状和基因调节至关重要.
- 了解植物中核骨架和核外围之间的物理联系是必不可少的.
研究的目的:
- 研究阿拉比多普西斯核骨蛋白KAKU4并确定其核外围局部化的功能区域.
- 阐明了连接核骨与植物核外的分子机制.
主要方法:
- 在KAKU4的N-终端区域保存的基因的分析.
- 使用KAKU4,CROWDED NUCLEI (CRWN),NUP82和NUP136.6研究蛋白质与蛋白质的相互作用.
- 检查KAKU4,NUP82和NUP136.6的进化史和亚细胞定位.
主要成果:
- 在KAKU4中确定了3个保存的N端基因,这些基因对于自我相互作用,CRWN相互作用,核外围定位和核延长至关重要.
- 发现这些基因也存在于植物特异性核波林NUP82和NUP136.
- 证明了KAKU4,NUP82和NUP136的共同进化起源,这表明KAKU4是从一个古老的核蛋白进化而来的.
- 揭示了NUP82,NUP136,CRWN和KAKU4之间的相互作用,在核孔和核骨架之间建立了物理连续.
结论:
- 特定的N-终端图案调解了关键的相互作用,以连接核骨与核外围在Arabidopsis.
- 植物核素NUP82和NUP136,与KAKU4一起,形成一个物理连续体,将核孔综合体与核骨连接起来.
- 这些发现为核架构及其在植物中的调节提供了新的见解.
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