指定器官横向性的Bicc1核糖蛋白复合体通过ANKS6诱导的相关ANKS3的结构改造获得许可
Benjamin Rothé1, Yayoi Ikawa2, Zhidian Zhang3
1Ecole Polytechnique Fédérale de Lausanne (EPFL) SV ISREC, Lausanne, Switzerland.
PLoS biology
|September 21, 2023
概括
一项新的研究揭示了ANKS3蛋白切割如何破坏Dand5mRNA衰变,导致对称衰变和潜在的横向性缺陷. 这一发现揭示了一种调节Bicaudal-C1 (Bicc1) 核糖核粒子形成的新机制.
科学领域:
- 分子生物学分子生物学
- 发展生物学 发展生物学
- 遗传学 是一个遗传学.
背景情况:
- 脊椎动物的器官横向性是通过Dand5mRNA的不对称衰变来建立的,主要是在左侧,由Bicaudal-C1 (Bicc1) 介导.
- 对mRNA与Bicc1结合的调节在很大程度上仍未被探索.
研究的目的:
- 研究ANKS3影响mRNA衰变和Bicc1相互作用的机制.
- 阐明ANKS3在调节器官横向性和相关缺陷中的作用.
主要方法:
- 在CRISPR工程中切断ANKS3.
- 蛋白质复合体的AlphaFold结构预测.
- 生物化学验证使用体外复制剂.
- 对Bicc1核糖核粒子 (RNP) 形成的分析.
主要成果:
- 一个CRISPR工程的ANKS3截断导致Dand5的对称mRNA衰变,与正常的不对称衰变不同.
- 确定了ANKS3的C端线圈圈域与Bicc1之间的新型相互作用.
- 这种相互作用以依赖于形状的方式抑制了向mRNA与Bicc1的结合,由ANKS6.6调节.
- 扰乱的Bicc1 RNP形成与横向性缺陷和纤毛病症有关.
结论:
- 通过ANKS3和ANKS6对RNA结合的双调节为控制Bicc1 RNP动态提供了一个新的机制.
- 这种机制将纤维病变和横向性缺陷与RNA结合调节中断联系起来.
- 这些发现提供了对器官不对称性和相关发育障碍的分子基础的见解.
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