7WOO image
Entry Detail
PDB ID:
7WOO
EMDB ID:
Title:
Cryo-EM structure of the inner ring protomer of the Saccharomyces cerevisiae nuclear pore complex
Biological Source:
Source Organism:
PDB Version:
Deposition Date:
2022-01-22
Release Date:
2022-04-13
Method Details:
Experimental Method:
Resolution:
3.71 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Nucleoporin NIC96
Chain IDs:A, L (auth: Z)
Chain Length:839
Number of Molecules:2
Biological Source:Saccharomyces cerevisiae
Polymer Type:polypeptide(L)
Description:Nucleoporin NUP157
Chain IDs:B (auth: C)
Chain Length:1391
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
Polymer Type:polypeptide(L)
Description:Nucleoporin NUP170
Chain IDs:C (auth: D)
Chain Length:1502
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
Polymer Type:polypeptide(L)
Description:Nucleoporin NUP188
Chain IDs:D (auth: E)
Chain Length:1655
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
Polymer Type:polypeptide(L)
Description:Nucleoporin NUP192
Chain IDs:E (auth: F)
Chain Length:1683
Number of Molecules:1
Biological Source:Saccharomyces cerevisiae
Polymer Type:polypeptide(L)
Description:Nucleoporin NUP49/NSP49
Chain IDs:F (auth: G), I (auth: J)
Chain Length:472
Number of Molecules:2
Biological Source:Saccharomyces cerevisiae
Polymer Type:polypeptide(L)
Description:Nucleoporin NUP57
Chain IDs:G (auth: H), J (auth: K)
Chain Length:541
Number of Molecules:2
Biological Source:Saccharomyces cerevisiae
Polymer Type:polypeptide(L)
Description:Nucleoporin NSP1
Chain IDs:H (auth: I), K (auth: L)
Chain Length:823
Number of Molecules:2
Biological Source:Saccharomyces cerevisiae
Ligand Molecules
Primary Citation
Near-atomic structure of the inner ring of the Saccharomyces cerevisiae nuclear pore complex.
Cell Res. 32 437 450 (2022)
PMID: 35301440 DOI: 10.1038/s41422-022-00632-y

Abstact

Nuclear pore complexes (NPCs) mediate bidirectional nucleocytoplasmic transport of substances in eukaryotic cells. However, the accurate molecular arrangement of NPCs remains enigmatic owing to their huge size and highly dynamic nature. Here we determined the structure of the asymmetric unit of the inner ring (IR monomer) at 3.73 Å resolution by single-particle cryo-electron microscopy, and created an atomic model of the intact IR consisting of 192 molecules of 8 nucleoporins. In each IR monomer, the Z-shaped Nup188-Nup192 complex in the middle layer is sandwiched by two approximately parallel rhomboidal structures in the inner and outer layers, while Nup188, Nup192 and Nic96 link all subunits to constitute a relatively stable IR monomer. In contrast, the intact IR is assembled by loose and instable interactions between IR monomers. These structures, together with previously reported structural information of IR, reveal two distinct interaction modes between IR monomers and extensive flexible connections in IR assembly, providing a structural basis for the stability and malleability of IR.

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