端粒瓦氨酸-阿基因二酸重复蛋白质改变状态,在线粒分裂中扩散染色,并抑制体外翻译
Taghreed Al-Turki1,2, Venkata Mantri1,2, Smaranda Willcox1,2
1Department of Microbiology and Immunology, Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599.
概括
从端粒RNA翻译的氨酸-氨酸 (VR) 蛋白质从非线粒细胞中的隔离体转移到线粒细胞中的扩散染色. 这种涉及L4核糖体蛋白的变化表明VR在线粒分裂过程中抑制了全球翻译.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 神经科学是一个神经科学.
背景情况:
- 哺乳动物G丰富的端粒RNA翻译可以产生氨酸-氨酸 (VR) 二蛋白.
- VR蛋白的细胞功能,以前在非细胞性细胞的点体中观察到的,仍然不清楚.
研究的目的:
- 为了研究细胞局部化和VR蛋白在线粒分裂期间的功能.
- 在细胞分裂过程中探索VR蛋白与细胞元件的相互作用.
主要方法:
- 同焦激光扫描显微镜与抗体染色.
- 使用RO-3306 (一种循环素依赖的激酶1抑制剂) 进行线粒丰富.
- 亲和力净化,然后进行质谱学.
主要成果:
- 虚拟现实蛋白在整个线粒细胞中表现出分散的染色,与它们在非线粒细胞中的点性局部化不同.
- VR蛋白与线粒细胞中的L4核糖体蛋白进行同位.
- 发现VR蛋白与核糖体蛋白相互作用,包括L4和蛋白,并在体外抑制翻译.
结论:
- 线粒分裂期间VR蛋白位址的转变表明它在调节全球翻译抑制中的作用.
- VR蛋白与L4核糖体蛋白的相互作用及其改变的分布可能促进细胞分裂期间的转化控制.
- 在小鼠胚胎大脑发育过程中,在增殖的神经原生细胞中观察到VR蛋白表达.
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