+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-32566 | |||||||||
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Title | Cryo-EM structure of the IR subunit from X. laevis NPC | |||||||||
Map data | The IR subunit | |||||||||
Sample |
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Keywords | nuclear pore complex / inner ring / Nup205 / Nup93 / Nup188 / Nup155 / NDC1 / Aladin / STRUCTURAL PROTEIN | |||||||||
Function / homology | Function and homology information nuclear pore complex assembly / structural constituent of nuclear pore / nuclear localization sequence binding / mRNA transport / nuclear pore / nuclear periphery / protein transport / nuclear membrane / cytosol Similarity search - Function | |||||||||
Biological species | Xenopus laevis (African clawed frog) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.2 Å | |||||||||
Authors | Huang G / Zhan X | |||||||||
Funding support | China, 1 items
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Citation | Journal: Cell Res / Year: 2022 Title: Cryo-EM structure of the inner ring from the Xenopus laevis nuclear pore complex. Authors: Gaoxingyu Huang / Xiechao Zhan / Chao Zeng / Ke Liang / Xuechen Zhu / Yanyu Zhao / Pan Wang / Qifan Wang / Qiang Zhou / Qinghua Tao / Minhao Liu / Jianlin Lei / Chuangye Yan / Yigong Shi / Abstract: Nuclear pore complex (NPC) mediates nucleocytoplasmic shuttling. Here we present single-particle cryo-electron microscopy structure of the inner ring (IR) subunit from the Xenopus laevis NPC at an ...Nuclear pore complex (NPC) mediates nucleocytoplasmic shuttling. Here we present single-particle cryo-electron microscopy structure of the inner ring (IR) subunit from the Xenopus laevis NPC at an average resolution of 4.2 Å. A homo-dimer of Nup205 resides at the center of the IR subunit, flanked by two molecules of Nup188. Four molecules of Nup93 each places an extended helix into the axial groove of Nup205 or Nup188, together constituting the central scaffold. The channel nucleoporin hetero-trimer of Nup62/58/54 is anchored on the central scaffold. Six Nup155 molecules interact with the central scaffold and together with the NDC1-ALADIN hetero-dimers anchor the IR subunit to the nuclear envelope and to outer rings. The scarce inter-subunit contacts may allow sufficient latitude in conformation and diameter of the IR. Our structure reveals the molecular basis for the IR subunit assembly of a vertebrate NPC. | |||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_32566.map.gz | 461.5 MB | EMDB map data format | |
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Header (meta data) | emd-32566-v30.xml emd-32566.xml | 24.2 KB 24.2 KB | Display Display | EMDB header |
Images | emd_32566.png | 62 KB | ||
Filedesc metadata | emd-32566.cif.gz | 10.7 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-32566 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-32566 | HTTPS FTP |
-Validation report
Summary document | emd_32566_validation.pdf.gz | 642.1 KB | Display | EMDB validaton report |
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Full document | emd_32566_full_validation.pdf.gz | 641.6 KB | Display | |
Data in XML | emd_32566_validation.xml.gz | 7.6 KB | Display | |
Data in CIF | emd_32566_validation.cif.gz | 8.8 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-32566 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-32566 | HTTPS FTP |
-Related structure data
Related structure data | 7wkkMC M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_32566.map.gz / Format: CCP4 / Size: 512 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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Annotation | The IR subunit | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.387 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Sample components
+Entire : The IR subunit
+Supramolecule #1: The IR subunit
+Macromolecule #1: MGC83295 protein
+Macromolecule #2: Nup188 domain-containing protein
+Macromolecule #3: Nuclear pore complex protein Nup93
+Macromolecule #4: Nup155-prov protein
+Macromolecule #5: Nup54
+Macromolecule #6: IL4I1 protein
+Macromolecule #7: MGC84997 protein
+Macromolecule #8: Aaas-prov protein
+Macromolecule #9: Nucleoporin NDC1
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 4.0 µm / Nominal defocus min: 1.2 µm |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: NONE |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 4.2 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 2093631 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |