Nuclear pores. Architecture of the nuclear pore complex coat.

Nuclear pores. Architecture of the nuclear pore complex coat.
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DOI:
10.1126/science.aaa4136
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发表时间:
2015-03-06
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Hoelz A
Hoelz A
中科院分区:
其他
文献类型:
--
作者:
Stuwe T;Correia AR;Lin DH;Paduch M;Lu VT;Kossiakoff AA;Hoelz A

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核孔复合体(NPC)是核质双向转运的唯一通道。尽管经过了半个世纪的结构表征,NPC的架构仍然未知。在这里,我们提出了一个重建的~400 kDa的外壳核孔蛋白复合物(CNC)的晶体结构从S。在7.4-μ m的分辨率下测定酿酒酵母。晶体结构揭示了一个弯曲的Y形结构和外壳核孔蛋白相互作用的分子细节,形成了Y的中心“三重离子”。酵母CNC与其人类对应物的电子显微镜重建的结构比较表明阐明的架构的进化保守。此外,32个CNC晶体结构的拷贝很容易对接到完全组装的人类NPC的冷冻电子断层扫描重建中,从而占其质量的约16 MDa。
The nuclear pore complex (NPC) constitutes the sole gateway for bidirectional nucleocytoplasmic transport. Despite half a century of structural characterization, the architecture of the NPC remains unknown. Here, we present the crystal structure of a reconstituted ~400 kDa coat nucleoporin complex (CNC) from S. cerevisiae at a 7.4-Å resolution. The crystal structure revealed a curved Y-shaped architecture and the molecular details of the coat nucleoporin interactions forming the central “triskelion” of the Y. A structural comparison of the yeast CNC with an electron microscopy reconstruction of its human counterpart suggested the evolutionary conservation of the elucidated architecture. Moreover, thirty-two copies of the CNC crystal structure docked readily into a cryoelectron tomographic reconstruction of the fully-assembled human NPC, thereby accounting for ~16 MDa of its mass.
DOI: 10.1073/pnas.0907453106
发表时间: 2009-08-25
影响因子: 11.1
作者:
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