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- PDB-8u6y: Preholo-Proteasome from Beta 3 D205 deletion -

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Basic information

Entry
Database: PDB / ID: 8u6y
TitlePreholo-Proteasome from Beta 3 D205 deletion
Components
  • (Proteasome subunit alpha type- ...) x 7
  • (Proteasome subunit beta type- ...) x 7
  • Proteasome assembly chaperone 2
  • Proteasome chaperone 1
  • Proteasome maturation factor UMP1
KeywordsHYDROLASE / Proteasome / core particle
Function / homology
Function and homology information


regulation of proteasome core complex assembly / 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 / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / Regulation of PTEN stability and activity / CDK-mediated phosphorylation and removal of Cdc6 / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis ...regulation of proteasome core complex assembly / 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 / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / Regulation of PTEN stability and activity / CDK-mediated phosphorylation and removal of Cdc6 / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / KEAP1-NFE2L2 pathway / Neddylation / Orc1 removal from chromatin / MAPK6/MAPK4 signaling / proteasome storage granule / Antigen processing: Ubiquitination & Proteasome degradation / endopeptidase activator activity / proteasome assembly / proteasome endopeptidase complex / proteasome core complex, beta-subunit complex / proteasome core complex, alpha-subunit complex / Ub-specific processing proteases / threonine-type endopeptidase activity / Neutrophil degranulation / proteasome complex / peroxisome / ubiquitin-dependent protein catabolic process / proteasome-mediated ubiquitin-dependent protein catabolic process / endopeptidase activity / mRNA binding / DNA damage response / endoplasmic reticulum membrane / mitochondrion / nucleus / cytosol / cytoplasm
Similarity search - Function
Proteasome chaperone 1, fungi / Proteasome chaperone 1 superfamily / POC1 chaperone / Proteasome maturation factor Ump1 / Proteasome maturation factor UMP1 / Proteasome assembly chaperone 2, eukaryotic / Proteasome assembly chaperone 2 / Proteasome assembly chaperone 2 superfamily / PAC2 family / Proteasome beta subunit, C-terminal ...Proteasome chaperone 1, fungi / Proteasome chaperone 1 superfamily / POC1 chaperone / Proteasome maturation factor Ump1 / Proteasome maturation factor UMP1 / Proteasome assembly chaperone 2, eukaryotic / Proteasome assembly chaperone 2 / Proteasome assembly chaperone 2 superfamily / PAC2 family / 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. / Proteasome subunit / Proteasome, subunit alpha/beta / Nucleophile aminohydrolases, N-terminal
Similarity search - Domain/homology
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 ...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 / Proteasome assembly chaperone 2 / Proteasome maturation factor UMP1 / Proteasome subunit beta type-1 / Proteasome subunit alpha type-6 / Proteasome subunit alpha type-4 / Proteasome chaperone 1
Similarity search - Component
Biological speciesSaccharomyces cerevisiae S288C (yeast)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å
AuthorsWalsh Jr., R.M. / Rawson, S. / Velez, B. / Blickling, M. / Razi, A. / Hanna, J.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)DP5-OD019800 United States
CitationJournal: Nat Struct Mol Biol / Year: 2024
Title: Mechanism of autocatalytic activation during proteasome assembly.
Authors: Benjamin Velez / Richard M Walsh / Shaun Rawson / Aida Razi / Lea Adams / Erignacio Fermin Perez / Fenglong Jiao / Marie Blickling / Tamayanthi Rajakumar / Darlene Fung / Lan Huang / John Hanna /
Abstract: Many large molecular machines are too elaborate to assemble spontaneously and are built through ordered pathways orchestrated by dedicated chaperones. During assembly of the core particle (CP) of the ...Many large molecular machines are too elaborate to assemble spontaneously and are built through ordered pathways orchestrated by dedicated chaperones. During assembly of the core particle (CP) of the proteasome, where protein degradation occurs, its six active sites are simultaneously activated via cleavage of N-terminal propeptides. Such activation is autocatalytic and coupled to fusion of two half-CP intermediates, which protects cells by preventing activation until enclosure of the active sites within the CP interior. Here we uncover key mechanistic aspects of autocatalytic activation, which proceeds through alignment of the β5 and β2 catalytic triad residues, respectively, with these triads being misaligned before fusion. This mechanism contrasts with most other zymogens, in which catalytic centers are preformed. Our data also clarify the mechanism by which individual subunits can be added in a precise, temporally ordered manner. This work informs two decades-old mysteries in the proteasome field, with broader implications for protease biology and multisubunit complex assembly.
History
DepositionSep 14, 2023Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 17, 2024Provider: repository / Type: Initial release
Revision 1.1Apr 24, 2024Group: Database references / Category: citation / citation_author
Item: _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.name
Revision 1.2Sep 4, 2024Group: Data collection / Database references / Category: citation / em_admin
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _em_admin.last_update
Revision 1.3Oct 16, 2024Group: Data collection / Structure summary
Category: em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Proteasome subunit alpha type-1
B: Proteasome subunit alpha type-2
C: Proteasome subunit alpha type-3
D: Proteasome subunit alpha type-4
E: Proteasome subunit alpha type-5
F: Proteasome subunit alpha type-6
G: Proteasome subunit alpha type-7
H: Proteasome maturation factor UMP1
I: Proteasome subunit beta type-2
J: Proteasome subunit beta type-3
K: Proteasome subunit beta type-4
L: Proteasome subunit beta type-5
M: Proteasome subunit beta type-6
N: Proteasome subunit beta type-1
O: Proteasome chaperone 1
P: Proteasome assembly chaperone 2
Q: Proteasome subunit beta type-7
R: Proteasome subunit alpha type-1
S: Proteasome subunit alpha type-2
T: Proteasome subunit alpha type-3
U: Proteasome subunit alpha type-4
V: Proteasome subunit alpha type-5
W: Proteasome subunit alpha type-6
X: Proteasome subunit alpha type-7
Y: Proteasome maturation factor UMP1
Z: Proteasome subunit beta type-2
a: Proteasome subunit beta type-3
b: Proteasome subunit beta type-4
c: Proteasome subunit beta type-5
d: Proteasome subunit beta type-6
e: Proteasome subunit beta type-1
f: Proteasome chaperone 1
g: Proteasome assembly chaperone 2
h: Proteasome subunit beta type-7


Theoretical massNumber of molelcules
Total (without water)919,96234
Polymers919,96234
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Proteasome subunit alpha type- ... , 7 types, 14 molecules ARBSCTDUEVFWGX

#1: Protein Proteasome subunit alpha type-1 / Macropain subunit C7-alpha / Multicatalytic endopeptidase complex C7 / Proteasome component C7- ...Macropain subunit C7-alpha / Multicatalytic endopeptidase complex C7 / Proteasome component C7-alpha / Proteasome component Y8 / Proteinase YSCE subunit 7 / SCL1 suppressor protein


Mass: 28033.830 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
References: UniProt: P21243, proteasome endopeptidase complex
#2: Protein Proteasome subunit alpha type-2 / Macropain subunit Y7 / Multicatalytic endopeptidase complex subunit Y7 / Proteasome component Y7 / ...Macropain subunit Y7 / Multicatalytic endopeptidase complex subunit Y7 / Proteasome component Y7 / Proteinase YSCE subunit 7


Mass: 27191.828 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
References: UniProt: P23639, proteasome endopeptidase complex
#3: Protein Proteasome subunit alpha type-3 / Macropain subunit Y13 / Multicatalytic endopeptidase complex subunit Y13 / Proteasome component Y13 ...Macropain subunit Y13 / Multicatalytic endopeptidase complex subunit Y13 / Proteasome component Y13 / Proteinase YSCE subunit 13


Mass: 27181.609 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P23638
#4: Protein Proteasome subunit alpha type-4 / Macropain subunit PRE6 / Multicatalytic endopeptidase complex subunit PRE6 / Proteasome component ...Macropain subunit PRE6 / Multicatalytic endopeptidase complex subunit PRE6 / Proteasome component PRE6 / Proteinase YSCE subunit PRE6


Mass: 28478.111 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
References: UniProt: P40303, proteasome endopeptidase complex
#5: Protein Proteasome subunit alpha type-5 / Macropain subunit PUP2 / Multicatalytic endopeptidase complex subunit PUP2 / Proteasome component ...Macropain subunit PUP2 / Multicatalytic endopeptidase complex subunit PUP2 / Proteasome component PUP2 / Proteinase YSCE subunit PUP2


Mass: 28649.086 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
References: UniProt: P32379, proteasome endopeptidase complex
#6: Protein Proteasome subunit alpha type-6 / Macropain subunit PRE5 / Multicatalytic endopeptidase complex subunit PRE5 / Proteasome component ...Macropain subunit PRE5 / Multicatalytic endopeptidase complex subunit PRE5 / Proteasome component PRE5 / Proteinase YSCE subunit PRE5


Mass: 25634.000 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
References: UniProt: P40302, proteasome endopeptidase complex
#7: Protein Proteasome subunit alpha type-7 / Macropain subunit C1 / Multicatalytic endopeptidase complex subunit C1 / Proteasome component C1 / ...Macropain subunit C1 / Multicatalytic endopeptidase complex subunit C1 / Proteasome component C1 / Proteinase YSCE subunit 1


Mass: 31575.068 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
References: UniProt: P21242, proteasome endopeptidase complex

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Protein , 3 types, 6 molecules HYOfPg

#8: Protein Proteasome maturation factor UMP1


Mass: 16777.766 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P38293
#15: Protein Proteasome chaperone 1 / Proteasome biogenesis-associated protein 1


Mass: 30718.074 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: Q05778
#16: Protein Proteasome assembly chaperone 2 / Alpha-1-proteinase inhibitor-degradation deficient protein 66 / Proteasome biogenesis-associated protein 2


Mass: 30762.895 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P36040

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Proteasome subunit beta type- ... , 7 types, 14 molecules IZJaKbLcMdNeQh

#9: Protein Proteasome subunit beta type-2 / Macropain subunit PUP1 / Multicatalytic endopeptidase complex subunit PUP1 / Proteasome component ...Macropain subunit PUP1 / Multicatalytic endopeptidase complex subunit PUP1 / Proteasome component PUP1 / Proteinase YSCE subunit PUP1


Mass: 28299.889 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
References: UniProt: P25043, proteasome endopeptidase complex
#10: Protein Proteasome subunit beta type-3 / Macropain subunit PUP3 / Multicatalytic endopeptidase complex subunit PUP3 / Proteasome component PUP3


Mass: 22512.754 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P25451
#11: Protein Proteasome subunit beta type-4 / Macropain subunit C11 / Multicatalytic endopeptidase complex subunit C11 / Proteasome component C11 ...Macropain subunit C11 / Multicatalytic endopeptidase complex subunit C11 / Proteasome component C11 / Proteinase YSCE subunit 11


Mass: 22545.676 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
References: UniProt: P22141, proteasome endopeptidase complex
#12: Protein Proteasome subunit beta type-5 / Macropain subunit PRE2 / Multicatalytic endopeptidase complex subunit PRE2 / Proteasome component ...Macropain subunit PRE2 / Multicatalytic endopeptidase complex subunit PRE2 / Proteasome component PRE2 / Proteinase YSCE subunit PRE2


Mass: 31670.539 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
References: UniProt: P30656, proteasome endopeptidase complex
#13: Protein Proteasome subunit beta type-6 / Multicatalytic endopeptidase complex subunit C5 / Proteasome component C5


Mass: 26905.076 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
References: UniProt: P23724, proteasome endopeptidase complex
#14: Protein Proteasome subunit beta type-1 / Macropain subunit PRE3 / Multicatalytic endopeptidase complex subunit PRE3 / Proteasome component ...Macropain subunit PRE3 / Multicatalytic endopeptidase complex subunit PRE3 / Proteasome component PRE3 / Proteinase YSCE subunit PRE3


Mass: 23573.604 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
References: UniProt: P38624, proteasome endopeptidase complex
#17: Protein Proteasome subunit beta type-7 / Macropain subunit PRE4 / Multicatalytic endopeptidase complex subunit PRE4 / Proteasome component ...Macropain subunit PRE4 / Multicatalytic endopeptidase complex subunit PRE4 / Proteasome component PRE4 / Proteinase YSCE subunit PRE4


Mass: 29471.289 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
References: UniProt: P30657, proteasome endopeptidase complex

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Details

Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Preholo-proteasome from Beta 3 D205 deletion mutant / Type: COMPLEX
Details: D205 is terminal most residue in the Beta 3 subunit. The deletion of this residue causes an accumulation of assembly intermediates including the Preholo-Proteasome
Entity ID: all / Source: NATURAL
Molecular weightValue: 0.75 MDa / Experimental value: NO
Source (natural)Organism: Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
Buffer solutionpH: 7.5
Details: Fluorinated Fos-Choline was added immediately prior to deposition on a grid for plunge freezing.
Buffer component
IDConc.NameFormulaBuffer-ID
150 mMTris Buffer1
21 mMEDTA1
3100 mMSodium ChlorideNaCl1
SpecimenConc.: 4.48 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 400 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 295.15 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 81000 X / Calibrated magnification: 47169 X / Nominal defocus max: 2200 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 3.995 sec. / Electron dose: 57 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 7461
EM imaging opticsEnergyfilter name: GIF Bioquantum / Energyfilter slit width: 25 eV

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Processing

EM software
IDNameVersionCategoryDetails
1crYOLOparticle selection
2SerialEM4.1 betaimage acquisition
4RELION4.1CTF correction
7Coot0.93model fittingIterative Manual Fitting
8ISOLDE1.15model fittingIterative rebuilding
9UCSF Chimera1.15model fittingRigid body of starting
11RELION4.1initial Euler assignment
12cryoSPARCv3.3.2final Euler assignment
14cryoSPARCv3.3.23D reconstruction
15PHENIX1.20.1-4487-000model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 1146597
SymmetryPoint symmetry: C2 (2 fold cyclic)
3D reconstructionResolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 19020 / Symmetry type: POINT
Atomic model buildingProtocol: AB INITIO MODEL / Space: REAL
Atomic model buildingPDB-ID: 8T08

8t08


Accession code: 8T08 / Source name: PDB / Type: experimental model

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