The Nuclear Pore Complex: Birth, Life, and Death of a Cellular Behemoth.

The Nuclear Pore Complex: Birth, Life, and Death of a Cellular Behemoth.
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DOI:
10.3390/cells11091456
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发表时间:
2022-04-25
期刊:
影响因子:
6
通讯作者:
Onischenko, Evgeny
Onischenko, Evgeny
中科院分区:
生物学2区
文献类型:
--
作者:
Dultz, Elisa;Wojtynek, Matthias;Medalia, Ohad;Onischenko, Evgeny

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核孔复合体(NPC)是穿过核膜的唯一运输通道。它们每个都由500-1000个核孔蛋白组成,是真核细胞中最大的大分子组件之一。由于结构分析方法的进步,最近在亚分子分辨率上揭示了NPC的构建原理和结构。尽管核孔蛋白的整体结构和库存是保守的,但即使在单个细胞内,核孔蛋白也表现出显著的成分和功能可塑性,其组装路径也具有惊人的变异性。一旦组装,在有丝分裂后的细胞中,NPC似乎仍然是不可交换的。关于鼻咽癌组装和组成的多功能性是如何建立的,细胞如何监测鼻咽癌细胞的功能状态,或者如何更新它们,还有许多尚未解决的问题。在这里,我们回顾了目前在理解NPC体系结构和生命周期的关键方面的进展。
Nuclear pore complexes (NPCs) are the only transport channels that cross the nuclear envelope. Constructed from ~500–1000 nucleoporin proteins each, they are among the largest macromolecular assemblies in eukaryotic cells. Thanks to advances in structural analysis approaches, the construction principles and architecture of the NPC have recently been revealed at submolecular resolution. Although the overall structure and inventory of nucleoporins are conserved, NPCs exhibit significant compositional and functional plasticity even within single cells and surprising variability in their assembly pathways. Once assembled, NPCs remain seemingly unexchangeable in post-mitotic cells. There are a number of as yet unresolved questions about how the versatility of NPC assembly and composition is established, how cells monitor the functional state of NPCs or how they could be renewed. Here, we review current progress in our understanding of the key aspects of NPC architecture and lifecycle.
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