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- EMDB-62695: local refinement map of regulatory particle of 26S proteasome -

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Basic information

Entry
Database: EMDB / ID: EMD-62695
Titlelocal refinement map of regulatory particle of 26S proteasome
Map datalocal refinement map of regulatory particle of 26S proteasome
Sample
  • Complex: 26S proteasome degradation complex
Keywords26S proteasome / complex / HYDROLASE
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.06 Å
AuthorsWang HY / Xu WQ
Funding support China, 4 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)32000862 China
Other governmentBX20200351
Other government24ZR1451800
Other government2021kf01
CitationJournal: To Be Published
Title: The cryo-EM structure of 26S proteasome complex
Authors: Wang HY / Xu WQ
History
DepositionDec 12, 2024-
Header (metadata) releaseDec 17, 2025-
Map releaseDec 17, 2025-
UpdateDec 17, 2025-
Current statusDec 17, 2025Processing site: PDBc / Status: Released

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Structure visualization

Supplemental images

emd_62695.png

Downloads & links

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Map

FileDownload / File: emd_62695.map.gz / Format: CCP4 / Size: 282.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationlocal refinement map of regulatory particle of 26S proteasome
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.06 Å/pix.
x 420 pix.
= 445.2 Å		1.06 Å/pix.
x 420 pix.
= 445.2 Å		1.06 Å/pix.
x 420 pix.
= 445.2 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.06 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.0435
Minimum - Maximum-0.2196131 - 0.45537493
Average (Standard dev.)0.000618415 (±0.015097878)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions420420420
Spacing420420420
CellA=B=C: 445.19998 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: local refinement map of regulatory particle of 26S...

Fileemd_62695_half_map_1.map
Annotationlocal refinement map of regulatory particle of 26S proteasome half map A
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: local refinement map of regulatory particle of 26S...

Fileemd_62695_half_map_2.map
Annotationlocal refinement map of regulatory particle of 26S proteasome half map B
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : 26S proteasome degradation complex

EntireName: 26S proteasome degradation complex
Components
  • Complex: 26S proteasome degradation complex

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Supramolecule #1: 26S proteasome degradation complex

SupramoleculeName: 26S proteasome degradation complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#34
Source (natural)Organism: Homo sapiens (human)

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 8
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.2 µm / Nominal defocus min: 1.2 µm
Sample stageCooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: NONE
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

8cvt


Details: Human 19S-20S proteasome, state SD2
Final reconstructionResolution.type: BY AUTHOR / Resolution: 4.06 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 91281
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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