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- EMDB-45216: In-cell Mus musculus nuclear pore complex with nuclear basket con... -

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Basic information

Entry
Database: EMDB / ID: EMD-45216
TitleIn-cell Mus musculus nuclear pore complex with nuclear basket consensus map
Map dataIn-cell Mus musculus symmetry-expanded nuclear pore complex with nuclear basket
Sample
  • Cell: In-cell Mus musculus symmetry-expanded nuclear pore complex with nuclear basket
KeywordsNuclear envelope / Nuclear pore / Nucleocytoplasmic transport / STRUCTURAL PROTEIN
Biological speciesMus musculus (house mouse)
Methodsubtomogram averaging / cryo EM / Resolution: 35.0 Å
AuthorsHutchings J / Singh D / Villa E
Funding support United States, European Union, 4 items
OrganizationGrant numberCountry
Howard Hughes Medical Institute (HHMI) United States
Damon Runyon Cancer Research FoundationDRG-2364-19 United States
European Molecular Biology Organization (EMBO)ALTF 871-2020European Union
National Institutes of Health/National Institute on Aging (NIH/NIA)K99AG080112 United States
CitationJournal: Cell / Year: 2024
Title: The molecular architecture of the nuclear basket.
Authors: Digvijay Singh / Neelesh Soni / Joshua Hutchings / Ignacia Echeverria / Farhaz Shaikh / Madeleine Duquette / Sergey Suslov / Zhixun Li / Trevor van Eeuwen / Kelly Molloy / Yi Shi / Junjie ...Authors: Digvijay Singh / Neelesh Soni / Joshua Hutchings / Ignacia Echeverria / Farhaz Shaikh / Madeleine Duquette / Sergey Suslov / Zhixun Li / Trevor van Eeuwen / Kelly Molloy / Yi Shi / Junjie Wang / Qiang Guo / Brian T Chait / Javier Fernandez-Martinez / Michael P Rout / Andrej Sali / Elizabeth Villa /
Abstract: The nuclear pore complex (NPC) is the sole mediator of nucleocytoplasmic transport. Despite great advances in understanding its conserved core architecture, the peripheral regions can exhibit ...The nuclear pore complex (NPC) is the sole mediator of nucleocytoplasmic transport. Despite great advances in understanding its conserved core architecture, the peripheral regions can exhibit considerable variation within and between species. One such structure is the cage-like nuclear basket. Despite its crucial roles in mRNA surveillance and chromatin organization, an architectural understanding has remained elusive. Using in-cell cryo-electron tomography and subtomogram analysis, we explored the NPC's structural variations and the nuclear basket across fungi (yeast; S. cerevisiae), mammals (mouse; M. musculus), and protozoa (T. gondii). Using integrative structural modeling, we computed a model of the basket in yeast and mammals that revealed how a hub of nucleoporins (Nups) in the nuclear ring binds to basket-forming Mlp/Tpr proteins: the coiled-coil domains of Mlp/Tpr form the struts of the basket, while their unstructured termini constitute the basket distal densities, which potentially serve as a docking site for mRNA preprocessing before nucleocytoplasmic transport.
History
DepositionJun 6, 2024-
Header (metadata) releaseAug 21, 2024-
Map releaseAug 21, 2024-
UpdateOct 2, 2024-
Current statusOct 2, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_45216.png

Downloads & links

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Map

FileDownload / File: emd_45216.map.gz / Format: CCP4 / Size: 42.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationIn-cell Mus musculus symmetry-expanded nuclear pore complex with nuclear basket
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
10 Å/pix.
x 224 pix.
= 2240. Å		10 Å/pix.
x 224 pix.
= 2240. Å		10 Å/pix.
x 224 pix.
= 2240. Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 10 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 1.83
Minimum - Maximum-3.5127454 - 7.0421395
Average (Standard dev.)-0.016092785 (±0.57302076)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions224224224
Spacing224224224
CellA=B=C: 2240.0 Å
α=β=γ: 90.0 °

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Supplemental data

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Sample components

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Entire : In-cell Mus musculus symmetry-expanded nuclear pore complex with ...

EntireName: In-cell Mus musculus symmetry-expanded nuclear pore complex with nuclear basket
Components
  • Cell: In-cell Mus musculus symmetry-expanded nuclear pore complex with nuclear basket

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Supramolecule #1: In-cell Mus musculus symmetry-expanded nuclear pore complex with ...

SupramoleculeName: In-cell Mus musculus symmetry-expanded nuclear pore complex with nuclear basket
type: cell / ID: 1 / Parent: 0
Source (natural)Organism: Mus musculus (house mouse)

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Experimental details

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Structure determination

Methodcryo EM
Processingsubtomogram averaging
Aggregation statecell

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Sample preparation

BufferpH: 7.4
VitrificationCryogen name: ETHANE-PROPANE / Instrument: HOMEMADE PLUNGER

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 BIOCONTINUUM (6k x 4k) / Detector mode: COUNTING / Digitization - Dimensions - Width: 5760 pixel / Digitization - Dimensions - Height: 4092 pixel / Average electron dose: 3.7 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 5.0 µm / Nominal defocus min: 3.0 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 35.0 Å / Resolution method: FSC 0.143 CUT-OFF / Number subtomograms used: 806
ExtractionNumber tomograms: 136 / Number images used: 220
Final angle assignmentType: MAXIMUM LIKELIHOOD

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