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Microtubules and the Protein Tau

机译:微管和蛋白质Tau

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摘要

The protein tau is central to the pathological process underlying sporadic AD. It is chiefly a neuronal protein and is produced in all portions of the nervous system (CNS, PNS, ENS) (Trojanowski et al. 1989). In immature nerve cells, tau is distributed diffusely throughout the entire cell, but during cell maturation it converts into a primarily axonal protein. Tau originates in the cell soma's rough endoplasmatic reticulum, it clears all cellular checkpoints for quality control, and, in this fully functional state, is then transferred to the axonal compartment (Lee et al. 2001; Scholz and Mandelkow 2014). In healthy nerve cells, the protein promotes self-assembly of axonal microtubules and stabilizes them (Fig. 4.1a). Together with motor proteins, microtubules are required for anterograde and retrograde transport of substances within the axon.
机译:tau蛋白对于散发性AD的病理过程至关重要。它主要是一种神经元蛋白,并在神经系统的所有部分(CNS,PNS,ENS)产生(Trojanowski等,1989)。在未成熟的神经细胞中,tau散布在整个细胞中,但在细胞成熟期间它会转化为主要的轴突蛋白。 Tau起源于细胞体的粗面内质网,它清除了所有细胞检查点以进行质量控制,然后在这种完全功能的状态下转移到了轴突区室(Lee等人2001; Scholz和Mandelkow 2014)。在健康的神经细胞中,该蛋白质可促进轴突微管的自组装并使其稳定(图4.1a)。与运动蛋白一起,微管对于轴突内物质的顺行和逆行运输是必需的。

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