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- PDB-6rgq: Human 20S Proteasome -

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Entry
Database: PDB / ID: 6rgq
TitleHuman 20S Proteasome
Components
  • (Proteasome subunit alpha type- ...) x 7
  • (Proteasome subunit beta type- ...) x 7
KeywordsHYDROLASE / proteasome
Function / homology
Function and homology information


purine ribonucleoside triphosphate binding / regulation of endopeptidase activity / Regulation of ornithine decarboxylase (ODC) / proteasome core complex / Cross-presentation of soluble exogenous antigens (endosomes) / Somitogenesis / immune system process / myofibril / NF-kappaB binding / proteasome endopeptidase complex ...purine ribonucleoside triphosphate binding / regulation of endopeptidase activity / Regulation of ornithine decarboxylase (ODC) / proteasome core complex / Cross-presentation of soluble exogenous antigens (endosomes) / Somitogenesis / immune system process / myofibril / NF-kappaB binding / proteasome endopeptidase complex / proteasome core complex, beta-subunit complex / proteasome core complex, alpha-subunit complex / threonine-type endopeptidase activity / negative regulation of inflammatory response to antigenic stimulus / response to organonitrogen compound / proteasome complex / proteolysis involved in protein catabolic process / sarcomere / Regulation of activated PAK-2p34 by proteasome mediated degradation / ciliary basal body / Autodegradation of Cdh1 by Cdh1:APC/C / APC/C:Cdc20 mediated degradation of Securin / Asymmetric localization of PCP proteins / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / Ubiquitin-dependent degradation of Cyclin D / AUF1 (hnRNP D0) binds and destabilizes mRNA / TNFR2 non-canonical NF-kB pathway / Assembly of the pre-replicative complex / Vpu mediated degradation of CD4 / Degradation of DVL / proteasomal protein catabolic process / P-body / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / Dectin-1 mediated noncanonical NF-kB signaling / Hh mutants are degraded by ERAD / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / Degradation of AXIN / Defective CFTR causes cystic fibrosis / Degradation of GLI1 by the proteasome / lipopolysaccharide binding / Activation of NF-kappaB in B cells / Hedgehog ligand biogenesis / Negative regulation of NOTCH4 signaling / G2/M Checkpoints / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Autodegradation of the E3 ubiquitin ligase COP1 / Vif-mediated degradation of APOBEC3G / Hedgehog 'on' state / Regulation of RUNX3 expression and activity / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / MAPK6/MAPK4 signaling / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / response to virus / APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1 / ABC-family proteins mediated transport / Degradation of beta-catenin by the destruction complex / Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha / response to organic cyclic compound / CDK-mediated phosphorylation and removal of Cdc6 / CLEC7A (Dectin-1) signaling / SCF(Skp2)-mediated degradation of p27/p21 / nuclear matrix / Regulation of expression of SLITs and ROBOs / FCERI mediated NF-kB activation / Regulation of PTEN stability and activity / Interleukin-1 signaling / Orc1 removal from chromatin / Regulation of RAS by GAPs / Separation of Sister Chromatids / Regulation of RUNX2 expression and activity / UCH proteinases / The role of GTSE1 in G2/M progression after G2 checkpoint / KEAP1-NFE2L2 pathway / Antigen processing: Ubiquitination & Proteasome degradation / Downstream TCR signaling / Neddylation / RUNX1 regulates transcription of genes involved in differentiation of HSCs / positive regulation of NF-kappaB transcription factor activity / peptidase activity / ER-Phagosome pathway / regulation of inflammatory response / postsynapse / proteasome-mediated ubiquitin-dependent protein catabolic process / secretory granule lumen / endopeptidase activity / response to oxidative stress / ficolin-1-rich granule lumen / nuclear body / ribosome / Ub-specific processing proteases / cadherin binding / intracellular membrane-bounded organelle / centrosome / synapse / ubiquitin protein ligase binding / Neutrophil degranulation / mitochondrion / proteolysis
Similarity search - Function
Proteasome subunit alpha 1 / Aminohydrolase, N-terminal nucleophile (Ntn) domain / Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 / 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 subunit alpha 1 / Aminohydrolase, N-terminal nucleophile (Ntn) domain / Glutamine Phosphoribosylpyrophosphate, subunit 1, domain 1 / 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 / 4-Layer Sandwich / Alpha Beta
Similarity search - Domain/homology
Proteasome subunit alpha type-7 / Proteasome subunit beta type-1 / Proteasome subunit alpha type-1 / Proteasome subunit alpha type-2 / Proteasome subunit alpha type-3 / Proteasome subunit alpha type-4 / Proteasome subunit alpha type-5 / Proteasome subunit beta type-4 / Proteasome subunit beta type-6 / Proteasome subunit beta type-5 ...Proteasome subunit alpha type-7 / Proteasome subunit beta type-1 / Proteasome subunit alpha type-1 / Proteasome subunit alpha type-2 / Proteasome subunit alpha type-3 / Proteasome subunit alpha type-4 / Proteasome subunit alpha type-5 / Proteasome subunit beta type-4 / Proteasome subunit beta type-6 / Proteasome subunit beta type-5 / Proteasome subunit beta type-3 / Proteasome subunit beta type-2 / Proteasome subunit alpha type-6 / Proteasome subunit beta type-7
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.6 Å
AuthorsToste Rego, A. / da Fonseca, P.C.A.
Funding support United Kingdom, 1items
OrganizationGrant numberCountry
Medical Research Council (United Kingdom)MC_UP_1201/5 United Kingdom
CitationJournal: Mol Cell / Year: 2019
Title: Characterization of Fully Recombinant Human 20S and 20S-PA200 Proteasome Complexes.
Authors: Ana Toste Rêgo / Paula C A da Fonseca /
Abstract: Proteasomes are essential in all eukaryotic cells. However, their function and regulation remain considerably elusive, particularly those of less abundant variants. We demonstrate the human 20S ...Proteasomes are essential in all eukaryotic cells. However, their function and regulation remain considerably elusive, particularly those of less abundant variants. We demonstrate the human 20S proteasome recombinant assembly and confirmed the recombinant complex integrity biochemically and with a 2.6 Å resolution cryo-EM map. To assess its competence to form higher-order assemblies, we prepared and analyzed recombinant human 20S-PA200, a poorly characterized nuclear complex. Its 3.0 Å resolution cryo-EM structure reveals the PA200 unique architecture; the details of its intricate interactions with the proteasome, resulting in unparalleled proteasome α ring rearrangements; and the molecular basis for PA200 allosteric modulation of the proteasome active sites. Non-protein cryo-EM densities could be assigned to PA200-bound inositol phosphates, and we speculate regarding their functional role. Here we open extensive opportunities to study the fundamental properties of the diverse and distinct eukaryotic proteasome variants and to improve proteasome targeting under different therapeutic conditions.
History
DepositionApr 17, 2019Deposition site: PDBE / Processing site: PDBE
Revision 1.0Sep 4, 2019Provider: repository / Type: Initial release
Revision 1.1Sep 11, 2019Group: Data collection / Database references / Category: citation / citation_author
Item: _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID
Revision 1.2Oct 16, 2019Group: Data collection / Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last

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Structure visualization

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Assembly

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


Theoretical massNumber of molelcules
Total (without water)717,75128
Polymers717,75128
Non-polymers00
Water0
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area103280 Å2
ΔGint-417 kcal/mol
Surface area203420 Å2
MethodPISA

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Components

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

#1: Protein Proteasome subunit alpha type-6 / / 27 kDa prosomal protein / p27K / Macropain iota chain / Multicatalytic endopeptidase complex iota ...27 kDa prosomal protein / p27K / Macropain iota chain / Multicatalytic endopeptidase complex iota chain / Proteasome iota chain


Mass: 27432.459 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMA6, PROS27 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: P60900, proteasome endopeptidase complex
#2: Protein Proteasome subunit alpha type-2 / / Macropain subunit C3 / Multicatalytic endopeptidase complex subunit C3 / Proteasome component C3


Mass: 25927.535 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMA2, HC3, PSC3 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: P25787, proteasome endopeptidase complex
#3: Protein Proteasome subunit alpha type-4 / / Macropain subunit C9 / Multicatalytic endopeptidase complex subunit C9 / Proteasome component C9 / ...Macropain subunit C9 / Multicatalytic endopeptidase complex subunit C9 / Proteasome component C9 / Proteasome subunit L


Mass: 29525.842 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMA4, HC9, PSC9 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: P25789, proteasome endopeptidase complex
#4: Protein Proteasome subunit alpha type-7 / / Proteasome subunit RC6-1 / Proteasome subunit XAPC7


Mass: 27929.891 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMA7, HSPC / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: O14818, proteasome endopeptidase complex
#5: Protein Proteasome subunit alpha type-5 / / Macropain zeta chain / Multicatalytic endopeptidase complex zeta chain / Proteasome zeta chain


Mass: 26435.977 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMA5 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: P28066, proteasome endopeptidase complex
#6: Protein Proteasome subunit alpha type-1 / / 30 kDa prosomal protein / PROS-30 / Macropain subunit C2 / Multicatalytic endopeptidase complex ...30 kDa prosomal protein / PROS-30 / Macropain subunit C2 / Multicatalytic endopeptidase complex subunit C2 / Proteasome component C2 / Proteasome nu chain


Mass: 29595.627 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMA1, HC2, NU, PROS30, PSC2 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: P25786, proteasome endopeptidase complex
#7: Protein Proteasome subunit alpha type-3 / / Macropain subunit C8 / Multicatalytic endopeptidase complex subunit C8 / Proteasome component C8


Mass: 28469.252 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMA3, HC8, PSC8 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: P25788, proteasome endopeptidase complex

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

#8: Protein Proteasome subunit beta type-6 / / Macropain delta chain / Multicatalytic endopeptidase complex delta chain / Proteasome delta chain / ...Macropain delta chain / Multicatalytic endopeptidase complex delta chain / Proteasome delta chain / Proteasome subunit Y


Mass: 21921.836 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMB6, LMPY, Y / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: P28072, proteasome endopeptidase complex
#9: Protein Proteasome subunit beta type-7 / / Macropain chain Z / Multicatalytic endopeptidase complex chain Z / Proteasome subunit Z


Mass: 25321.980 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMB7, Z / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: Q99436, proteasome endopeptidase complex
#10: Protein Proteasome subunit beta type-3 / PSMB3 / Proteasome chain 13 / Proteasome component C10-II / Proteasome theta chain


Mass: 22972.896 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMB3 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: P49720, proteasome endopeptidase complex
#11: Protein Proteasome subunit beta type-2 / PSMB2 / Macropain subunit C7-I / Multicatalytic endopeptidase complex subunit C7-I / Proteasome component C7-I


Mass: 22864.277 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMB2 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: P49721, proteasome endopeptidase complex
#12: Protein Proteasome subunit beta type-5 / PSMB5 / Macropain epsilon chain / Multicatalytic endopeptidase complex epsilon chain / Proteasome chain 6 / ...Macropain epsilon chain / Multicatalytic endopeptidase complex epsilon chain / Proteasome chain 6 / Proteasome epsilon chain / Proteasome subunit MB1 / Proteasome subunit X


Mass: 22484.369 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMB5, LMPX, MB1, X / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: P28074, proteasome endopeptidase complex
#13: Protein Proteasome subunit beta type-1 / PSMB1 / Macropain subunit C5 / Multicatalytic endopeptidase complex subunit C5 / Proteasome component C5 / ...Macropain subunit C5 / Multicatalytic endopeptidase complex subunit C5 / Proteasome component C5 / Proteasome gamma chain


Mass: 23578.986 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMB1, PSC5 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: P20618, proteasome endopeptidase complex
#14: Protein Proteasome subunit beta type-4 / PSMB4 / 26 kDa prosomal protein / PROS-26 / Macropain beta chain / Multicatalytic endopeptidase complex ...26 kDa prosomal protein / PROS-26 / Macropain beta chain / Multicatalytic endopeptidase complex beta chain / Proteasome beta chain / Proteasome chain 3 / HsN3


Mass: 24414.740 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PSMB4, PROS26 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: P28070, proteasome endopeptidase complex

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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: Human 20S ProteasomeProteasome / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightValue: 0.716 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.4
Buffer component
IDConc.NameFormulaBuffer-ID
150 mMTrizma bufferTris-HClTris1
2100 mMSodium ChlorideNaClSodium chloride1
31 mMEthylenediaminetetraacetic acidEDTAEthylenediaminetetraacetic acid1
SpecimenConc.: 0.1 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES / Details: The sample was homogeneous
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 95 % / 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 FIELDBright-field microscopy / Nominal magnification: 95000 X
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 60 sec. / Electron dose: 45.7 e/Å2 / Detector mode: COUNTING / Film or detector model: FEI FALCON III (4k x 4k) / Num. of real images: 483
Details: 411 images were selected for further analysis, based on their contrast and the recovery of isotropic Thon rings to high resolution.

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Processing

EM software
IDNameVersionCategory
3EPUimage acquisition
5cisTEM1.0.0CTF correction
8Cootmodel fitting
12cisTEM1.0.0.initial Euler assignment
14cisTEM1.0.0.final Euler assignment
17cisTEM1.0.0.3D reconstruction
19PHENIXmodel refinement
20Cootmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 58281
SymmetryPoint symmetry: C2 (2 fold cyclic)
3D reconstructionResolution: 2.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 50885 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL
Atomic model buildingPDB-ID: 5LE5

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