Cryo-EM structure of Xenopus laevis nuclear pore complex cytoplasmic ring Nup358 region
Map data
Sample
Complex: nuclear pore complex cytoplasmic ring
Keywords
cytoplasmic ring / cryo-EM / nuclear pore complex / Xenopus laevis / NUCLEAR PROTEIN
Function / homology
Function and homology information
macromolecule localization / GATOR2 complex / nephron development / protein exit from endoplasmic reticulum / COPII-coated vesicle budding / nuclear pore inner ring / nuclear pore central transport channel / transcription-dependent tethering of RNA polymerase II gene DNA at nuclear periphery / nuclear pore outer ring / nuclear pore complex assembly ...macromolecule localization / GATOR2 complex / nephron development / protein exit from endoplasmic reticulum / COPII-coated vesicle budding / nuclear pore inner ring / nuclear pore central transport channel / transcription-dependent tethering of RNA polymerase II gene DNA at nuclear periphery / nuclear pore outer ring / nuclear pore complex assembly / nuclear pore organization / COPII vesicle coat / post-transcriptional tethering of RNA polymerase II gene DNA at nuclear periphery / attachment of mitotic spindle microtubules to kinetochore / structural constituent of nuclear pore / nuclear localization sequence binding / NLS-bearing protein import into nucleus / RNA export from nucleus / nucleocytoplasmic transport / poly(A)+ mRNA export from nucleus / mitotic metaphase chromosome alignment / ribosomal large subunit export from nucleus / positive regulation of TOR signaling / mRNA transport / cellular response to nutrient levels / nuclear pore / mRNA export from nucleus / ribosomal small subunit export from nucleus / positive regulation of TORC1 signaling / GTPase activator activity / nuclear periphery / cellular response to amino acid starvation / kinetochore / phospholipid binding / protein import into nucleus / protein transport / nuclear membrane / lysosomal membrane / cell division / positive regulation of DNA-templated transcription / structural molecule activity / metal ion binding / cytosol / cytoplasm Similarity search - Function
Journal: Protein Cell / Year: 2022 Title: 8 Å structure of the outer rings of the Xenopus laevis nuclear pore complex obtained by cryo-EM and AI. Authors: Linhua Tai / Yun Zhu / He Ren / Xiaojun Huang / Chuanmao Zhang / Fei Sun / Abstract: The nuclear pore complex (NPC), one of the largest protein complexes in eukaryotes, serves as a physical gate to regulate nucleocytoplasmic transport. Here, we determined the 8 Å resolution cryo- ...The nuclear pore complex (NPC), one of the largest protein complexes in eukaryotes, serves as a physical gate to regulate nucleocytoplasmic transport. Here, we determined the 8 Å resolution cryo-electron microscopic (cryo-EM) structure of the outer rings containing nuclear ring (NR) and cytoplasmic ring (CR) from the Xenopus laevis NPC, with local resolutions reaching 4.9 Å. With the aid of AlphaFold2, we managed to build a pseudoatomic model of the outer rings, including the Y complexes and flanking components. In this most comprehensive and accurate model of outer rings to date, the almost complete Y complex structure exhibits much tighter interaction in the hub region. In addition to two copies of Y complexes, each asymmetric subunit in CR contains five copies of Nup358, two copies of the Nup214 complex, two copies of Nup205 and one copy of newly identified Nup93, while that in NR contains one copy of Nup205, one copy of ELYS and one copy of Nup93. These in-depth structural features represent a great advance in understanding the assembly of NPCs.
History
Deposition
Oct 14, 2021
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Header (metadata) release
Feb 2, 2022
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Map release
Feb 2, 2022
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Update
Dec 13, 2023
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Current status
Dec 13, 2023
Processing site: PDBj / Status: Released
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Structure visualization
Movie
Surface view with section colored by density value
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