RNA结合是Annexin家族的一个古老的特征
Sudarshan S Patil1, Vipul Panchal2, Trude Røstbø1
1Neurotargeting Group, Department of Biomedicine, University of Bergen, Bergen, Norway.
Frontiers in cell and developmental biology
|July 3, 2023
概括
哺乳动物附属蛋白,一种蛋白质家族,可以与信使RNA (mRNA) 结合,这表明这是一个古老的特征. 这种结合脂质结合的RNA结合能力,将附件因定位为协调细胞运输中的关键参与者.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 细胞内功能依赖于囊泡和mRNA颗粒的协调运输.
- 附件蛋白是参与 (Ca2+) 调节过程的多功能蛋白质,包括内细胞/外细胞通路和mRNA运输.
- 附录素A2已知的mRNA结合表明其他附录素可能具有这种特性.
研究的目的:
- 为了研究除了附件A2之外的哺乳动物附录素是否可以直接与RNA结合.
- 描述各种Annexin的RNA结合能力和亲和力.
- 探索附件因在协调的mRNA和囊泡运输中的潜在作用.
主要方法:
- 斑点斑点和紫外线交联测试以评估mRNA结合.
- 生物层干涉测量以确定安素-RNA相互作用的解离常量 (KDs).
- 在信使核糖蛋白 (mRNP) 复合体中检测附件因的免疫补充.
主要成果:
- 一些附录素,包括附录素A13,附录素A7和附录素A11,证明了对c-myc 3'UTRRNA的纳米级范围的结合.
- 附录素A2选择性地与c-myc 5'UTR RNA结合,而其他测试的附录素没有.
- 在测试的Annexin-RNA相互作用中观察到明显的结合亲缘关系.
结论:
- RNA结合是哺乳动物Annexin家族的一个古老特征.
- 附件因的双重RNA和脂质结合能力表明它们参与了Ca2+调节的囊泡和mRNA的运输.
- 这些发现为研究细胞传输机制中的附件因开辟了新的途径.
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