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- EMDB-2165: Cryo-EM reconstruction of the yeast 26S proteasome -

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Basic information

Entry
Database: EMDB / ID: EMD-2165
TitleCryo-EM reconstruction of the yeast 26S proteasome
Map dataReconstruction of Saccharomyces cerevisiase 26S proteasome
Sample
  • Sample: Saccharomyes cerevisiae 26S proteasome
  • Organelle or cellular component: 26S proteasomeProteasome
Keywords26S proteasome / AAA-ATPases / protein degradation / ubiquitin-proteasome pathway
Function / homology
Function and homology information


SAGA complex localization to transcription regulatory region / peroxisome fission / proteasome storage granule assembly / transcription export complex 2 / proteasome regulatory particle assembly / protein deneddylation / nonfunctional rRNA decay / maintenance of DNA trinucleotide repeats / filamentous growth / COP9 signalosome ...SAGA complex localization to transcription regulatory region / peroxisome fission / proteasome storage granule assembly / transcription export complex 2 / proteasome regulatory particle assembly / protein deneddylation / nonfunctional rRNA decay / maintenance of DNA trinucleotide repeats / filamentous growth / COP9 signalosome / proteasome regulatory particle / cytosolic proteasome complex / proteasome regulatory particle, lid subcomplex / proteasome-activating activity / protein-containing complex localization / mitochondrial fission / proteasome regulatory particle, base subcomplex / K48-linked polyubiquitin modification-dependent protein binding / proteasome core complex assembly / nuclear outer membrane-endoplasmic reticulum membrane network / Cross-presentation of soluble exogenous antigens (endosomes) / TNFR2 non-canonical NF-kB pathway / proteasomal ubiquitin-independent protein catabolic process / Ub-specific processing proteases / peptide catabolic process / proteasome binding / regulation of protein catabolic process / protein deubiquitination / proteasome storage granule / polyubiquitin modification-dependent protein binding / endopeptidase activator activity / proteasome assembly / proteasome endopeptidase complex / positive regulation of RNA polymerase II transcription preinitiation complex assembly / proteasome core complex, beta-subunit complex / proteasome core complex, alpha-subunit complex / threonine-type endopeptidase activity / enzyme regulator activity / mRNA export from nucleus / protein folding chaperone / : / Neutrophil degranulation / proteasome complex / ubiquitin binding / proteasomal protein catabolic process / nucleotide-excision repair / positive regulation of transcription elongation by RNA polymerase II / double-strand break repair via homologous recombination / positive regulation of protein catabolic process / metallopeptidase activity / protein-macromolecule adaptor activity / ubiquitin-dependent protein catabolic process / proteasome-mediated ubiquitin-dependent protein catabolic process / endopeptidase activity / ubiquitinyl hydrolase 1 / cysteine-type deubiquitinase activity / molecular adaptor activity / regulation of cell cycle / chromatin remodeling / protein domain specific binding / mRNA binding / ubiquitin protein ligase binding / structural molecule activity / endoplasmic reticulum membrane / endoplasmic reticulum / ATP hydrolysis activity / positive regulation of transcription by RNA polymerase II / mitochondrion / ATP binding / metal ion binding / nucleus / identical protein binding / cytosol / cytoplasm
Similarity search - Function
Rpn9, C-terminal helix / Rpn9 C-terminal helix / Proteasomal ubiquitin receptor Rpn13/ADRM1 / Proteasomal ubiquitin receptor Rpn13/ADRM1, Pru domain superfamily / Rpn13/ADRM1, Pru domain / Proteasome complex subunit Rpn13, Pru domain / Pru (pleckstrin-like receptor for ubiquitin) domain profile. / 26S proteasome regulatory subunit RPN7/PSMD6 C-terminal helix / 26S proteasome non-ATPase regulatory subunit Rpn12 / 26S proteasome regulatory subunit, C-terminal ...Rpn9, C-terminal helix / Rpn9 C-terminal helix / Proteasomal ubiquitin receptor Rpn13/ADRM1 / Proteasomal ubiquitin receptor Rpn13/ADRM1, Pru domain superfamily / Rpn13/ADRM1, Pru domain / Proteasome complex subunit Rpn13, Pru domain / Pru (pleckstrin-like receptor for ubiquitin) domain profile. / 26S proteasome regulatory subunit RPN7/PSMD6 C-terminal helix / 26S proteasome non-ATPase regulatory subunit Rpn12 / 26S proteasome regulatory subunit, C-terminal / Proteasome regulatory subunit C-terminal / DSS1/SEM1 / 26S proteasome regulatory subunit RPN5, C-terminal domain / : / DSS1/SEM1 family / 26S proteasome regulatory subunit RPN5 C-terminal domain / 26S proteasome subunit RPN2, N-terminal domain / DSS1_SEM1 / 26S proteasome regulatory subunit Rpn6, N-terminal / 6S proteasome subunit Rpn6, C-terminal helix domain / 26S proteasome regulatory subunit RPN6 N-terminal domain / 26S proteasome subunit RPN6 C-terminal helix domain / 26S proteasome regulatory complex, non-ATPase subcomplex, Rpn2/Psmd1 subunit / Proteasome subunit Rpn10 / 26S Proteasome non-ATPase regulatory subunit 13 / 26S proteasome regulatory subunit RPN2, C-terminal / 26S proteasome regulatory subunit RPN2 C-terminal domain / 26S Proteasome non-ATPase regulatory subunit 7/8 / : / 26S proteasome regulatory subunit 7, OB domain / 26S proteasome regulatory complex, non-ATPase subcomplex, Rpn1 subunit / RPN1, N-terminal / 26S proteasome non-ATPase regulatory subunit RPN1, C-terminal / RPN1 N-terminal domain / 26S proteasome non-ATPase regulatory subunit RPN1 C-terminal / 26S proteasome regulatory subunit Rpn7, N-terminal / 26S proteasome regulatory subunit Rpn7/COP9 signalosome complex subunit 1 / 26S proteasome subunit RPN7 / 26S Proteasome non-ATPase regulatory subunit 12/COP9 signalosome complex subunit 4 / Proteasome/cyclosome repeat / Proteasome/cyclosome repeat / PCI/PINT associated module / von Willebrand factor type A domain / CSN8/PSMD8/EIF3K / CSN8/PSMD8/EIF3K family / HEAT repeats / Rpn11/EIF3F, C-terminal / Maintenance of mitochondrial structure and function / Proteasomal ATPase OB C-terminal domain / Proteasomal ATPase OB C-terminal domain / motif in proteasome subunits, Int-6, Nip-1 and TRIP-15 / PCI domain / Proteasome component (PCI) domain / PCI domain profile. / Ubiquitin interacting motif / Ubiquitin-interacting motif (UIM) domain profile. / JAB1/Mov34/MPN/PAD-1 ubiquitin protease / Proteasome beta subunit, C-terminal / Proteasome beta subunits C terminal / Proteasome subunit beta 4 / Proteasome subunit beta 2 / Proteasome beta 3 subunit / Proteasome subunit alpha6 / Proteasome subunit alpha5 / Proteasome beta-type subunits signature. / Peptidase T1A, proteasome beta-subunit / Proteasome beta-type subunit, conserved site / Proteasome subunit A N-terminal signature / Proteasome alpha-type subunits signature. / Proteasome alpha-subunit, N-terminal domain / Proteasome subunit A N-terminal signature Add an annotation / Proteasome alpha-type subunit / Proteasome alpha-type subunit profile. / Proteasome B-type subunit / Proteasome beta-type subunit profile. / VWFA domain profile. / Proteasome subunit / Proteasome, subunit alpha/beta / von Willebrand factor, type A / AAA ATPase, AAA+ lid domain / AAA+ lid domain / TPR repeat region circular profile. / ATPase, AAA-type, conserved site / AAA-protein family signature. / JAB/MPN domain / JAB1/MPN/MOV34 metalloenzyme domain / TPR repeat profile. / MPN domain / MPN domain profile. / Nucleophile aminohydrolases, N-terminal / von Willebrand factor A-like domain superfamily / Tetratricopeptide repeat / ATPase family associated with various cellular activities (AAA) / ATPase, AAA-type, core / Armadillo-like helical / Tetratricopeptide-like helical domain superfamily / Armadillo-type fold / Winged helix DNA-binding domain superfamily / Winged helix-like DNA-binding domain superfamily / ATPases associated with a variety of cellular activities
Similarity search - Domain/homology
26S proteasome regulatory subunit RPN13 / 26S proteasome complex subunit SEM1 / Probable proteasome subunit alpha type-7 / Proteasome subunit alpha type-1 / Proteasome subunit beta type-4 / Proteasome subunit alpha type-3 / Proteasome subunit alpha type-2 / Proteasome subunit beta type-6 / Proteasome subunit beta type-2 / Proteasome subunit beta type-3 ...26S proteasome regulatory subunit RPN13 / 26S proteasome complex subunit SEM1 / Probable proteasome subunit alpha type-7 / Proteasome subunit alpha type-1 / Proteasome subunit beta type-4 / Proteasome subunit alpha type-3 / Proteasome subunit alpha type-2 / Proteasome subunit beta type-6 / Proteasome subunit beta type-2 / Proteasome subunit beta type-3 / Proteasome subunit beta type-5 / Proteasome subunit beta type-7 / Proteasome subunit alpha type-5 / 26S proteasome regulatory subunit RPN12 / 26S proteasome regulatory subunit RPN2 / 26S proteasome regulatory subunit 6A / 26S proteasome regulatory subunit 6B homolog / 26S proteasome regulatory subunit 7 homolog / Proteasome subunit beta type-1 / 26S proteasome regulatory subunit RPN1 / 26S proteasome regulatory subunit RPN10 / 26S proteasome regulatory subunit RPN3 / Proteasome subunit alpha type-6 / Proteasome subunit alpha type-4 / 26S proteasome regulatory subunit 4 homolog / Ubiquitin carboxyl-terminal hydrolase RPN11 / 26S proteasome subunit RPT4 / 26S proteasome regulatory subunit 8 homolog / 26S proteasome regulatory subunit RPN9 / 26S proteasome regulatory subunit RPN7 / 26S proteasome regulatory subunit RPN8 / 26S proteasome regulatory subunit RPN5 / 26S proteasome regulatory subunit RPN6
Similarity search - Component
Biological speciesSaccharomyces cerevisiae (brewer's yeast)
Methodsingle particle reconstruction / cryo EM / Resolution: 7.4 Å
AuthorsBeck F / Unverdorben P / Bohn S / Schweitzer A / Pfeifer G / Sakata E / Nickell S / Plitzko JM / Villa E / Baumeister W / Forster F
CitationJournal: Proc Natl Acad Sci U S A / Year: 2012
Title: Near-atomic resolution structural model of the yeast 26S proteasome.
Authors: Florian Beck / Pia Unverdorben / Stefan Bohn / Andreas Schweitzer / Günter Pfeifer / Eri Sakata / Stephan Nickell / Jürgen M Plitzko / Elizabeth Villa / Wolfgang Baumeister / Friedrich Förster /
Abstract: The 26S proteasome operates at the executive end of the ubiquitin-proteasome pathway. Here, we present a cryo-EM structure of the Saccharomyces cerevisiae 26S proteasome at a resolution of 7.4 Å or ...The 26S proteasome operates at the executive end of the ubiquitin-proteasome pathway. Here, we present a cryo-EM structure of the Saccharomyces cerevisiae 26S proteasome at a resolution of 7.4 Å or 6.7 Å (Fourier-Shell Correlation of 0.5 or 0.3, respectively). We used this map in conjunction with molecular dynamics-based flexible fitting to build a near-atomic resolution model of the holocomplex. The quality of the map allowed us to assign α-helices, the predominant secondary structure element of the regulatory particle subunits, throughout the entire map. We were able to determine the architecture of the Rpn8/Rpn11 heterodimer, which had hitherto remained elusive. The MPN domain of Rpn11 is positioned directly above the AAA-ATPase N-ring suggesting that Rpn11 deubiquitylates substrates immediately following commitment and prior to their unfolding by the AAA-ATPase module. The MPN domain of Rpn11 dimerizes with that of Rpn8 and the C-termini of both subunits form long helices, which are integral parts of a coiled-coil module. Together with the C-terminal helices of the six PCI-domain subunits they form a very large coiled-coil bundle, which appears to serve as a flexible anchoring device for all the lid subunits.
History
DepositionJul 26, 2012-
Header (metadata) releaseAug 29, 2012-
Map releaseSep 5, 2012-
UpdateSep 26, 2012-
Current statusSep 26, 2012Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 1.28
  • Imaged by UCSF Chimera
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  • Surface view colored by radius
  • Surface level: 1.28
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-4cr2
  • Surface level: 1.28
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-3j47
  • Surface level: 1.28
  • Imaged by UCSF Chimera
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  • Simplified surface model + fitted atomic model
  • Atomic modelsPDB-3j47
  • Imaged by Jmol
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  • Simplified surface model + fitted atomic model
  • Atomic modelsPDB-4cr2
  • Imaged by Jmol
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

Downloads & links

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Map

FileDownload / File: emd_2165.map.gz / Format: CCP4 / Size: 81.8 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationReconstruction of Saccharomyces cerevisiase 26S proteasome
Voxel sizeX=Y=Z: 1.99 Å
Density
Contour LevelBy AUTHOR: 1.28 / Movie #1: 1.28
Minimum - Maximum-4.59134245 - 6.52631712
Average (Standard dev.)0.01448097 (±0.20049275)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions280280280
Spacing280280280
CellA=B=C: 557.2 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.991.991.99
M x/y/z280280280
origin x/y/z0.0000.0000.000
length x/y/z557.200557.200557.200
α/β/γ90.00090.00090.000
start NX/NY/NZ-32-32-32
NX/NY/NZ646464
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS280280280
D min/max/mean-4.5916.5260.014

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Supplemental data

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Sample components

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Entire : Saccharomyes cerevisiae 26S proteasome

EntireName: Saccharomyes cerevisiae 26S proteasome
Components
  • Sample: Saccharomyes cerevisiae 26S proteasome
  • Organelle or cellular component: 26S proteasomeProteasome

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Supramolecule #1000: Saccharomyes cerevisiae 26S proteasome

SupramoleculeName: Saccharomyes cerevisiae 26S proteasome / type: sample / ID: 1000 / Number unique components: 1
Molecular weightExperimental: 2.5 MDa / Theoretical: 2.5 MDa

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Supramolecule #1: 26S proteasome

SupramoleculeName: 26S proteasome / type: organelle_or_cellular_component / ID: 1 / Recombinant expression: No
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast) / synonym: Baker's yeast
Molecular weightExperimental: 2.5 MDa / Theoretical: 2.5 MDa

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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

Concentration0.5 mg/mL
BufferpH: 7.1
Details: 4 mM ATP, 10mM MgCl2, 50mM Tris[pH7.1], 10% glycerol
GridDetails: quantifoil holey carbon
VitrificationCryogen name: ETHANE / Instrument: HOMEMADE PLUNGER

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsCalibrated magnification: 156784 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2 mm / Nominal defocus max: 3.5 µm / Nominal defocus min: 1.5 µm / Nominal magnification: 150000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
TemperatureMin: 80 K / Max: 81 K / Average: 80.5 K
DateMar 15, 2012
Image recordingCategory: CCD / Film or detector model: TVIPS TEMCAM-F816 (8k x 8k) / Number real images: 63126 / Average electron dose: 25 e/Å2 / Bits/pixel: 16
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionDetails: micrograph
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Algorithm: OTHER / Resolution.type: BY AUTHOR / Resolution: 7.4 Å / Resolution method: FSC 0.5 CUT-OFF / Software - Name: XMIPP / Number images used: 2464694
DetailsThe particles were selected using an automatic selection program.

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