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- PDB-6r70: Endogeneous native human 20S proteasome -

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Entry
Database: PDB / ID: 6r70
TitleEndogeneous native human 20S proteasome
Components
  • (Proteasome subunit alpha type- ...) x 7
  • (Proteasome subunit beta type- ...) x 7
KeywordsHYDROLASE / native / human / 20S proteasome / proteasome / cryo-EM / microfluidic / CryoWriter / protein isolation / endogeneous
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: 3.5 Å
AuthorsSchmidli, C. / Albiez, S. / Rima, L. / Righetto, R. / Mohammed, I. / Oliva, P. / Kovacik, L. / Stahlberg, H. / Braun, T.
Funding support Switzerland, 2items
OrganizationGrant numberCountry
Swiss National Science Foundation200021_162521 Switzerland
Swiss National Science Foundation205320_166164 Switzerland
CitationJournal: Proc Natl Acad Sci U S A / Year: 2019
Title: Microfluidic protein isolation and sample preparation for high-resolution cryo-EM.
Authors: Claudio Schmidli / Stefan Albiez / Luca Rima / Ricardo Righetto / Inayatulla Mohammed / Paolo Oliva / Lubomir Kovacik / Henning Stahlberg / Thomas Braun /
Abstract: High-resolution structural information is essential to understand protein function. Protein-structure determination needs a considerable amount of protein, which can be challenging to produce, often ...High-resolution structural information is essential to understand protein function. Protein-structure determination needs a considerable amount of protein, which can be challenging to produce, often involving harsh and lengthy procedures. In contrast, the several thousand to a few million protein particles required for structure determination by cryogenic electron microscopy (cryo-EM) can be provided by miniaturized systems. Here, we present a microfluidic method for the rapid isolation of a target protein and its direct preparation for cryo-EM. Less than 1 μL of cell lysate is required as starting material to solve the atomic structure of the untagged, endogenous human 20S proteasome. Our work paves the way for high-throughput structure determination of proteins from minimal amounts of cell lysate and opens more opportunities for the isolation of sensitive, endogenous protein complexes.
History
DepositionMar 28, 2019Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jul 3, 2019Provider: repository / Type: Initial release
Revision 1.1Jul 17, 2019Group: Data collection / Database references / Category: citation
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.year
Revision 1.2Jul 24, 2019Group: Data collection / Database references / Category: citation / Item: _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.3Jul 31, 2019Group: Data collection / Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID
Revision 1.4Dec 18, 2019Group: Other / Category: atom_sites
Item: _atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] / _atom_sites.fract_transf_matrix[3][3]

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Structure visualization

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  • Deposited structure unit
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Assembly

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


Theoretical massNumber of molelcules
Total (without water)693,57628
Polymers693,57628
Non-polymers00
Water0
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area111250 Å2
ΔGint-401 kcal/mol
Surface area218180 Å2
MethodPISA

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Components

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

#1: 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: 24081.402 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HELA
References: UniProt: P28070, proteasome endopeptidase complex
#9: Protein Proteasome subunit beta type-7 / / Macropain chain Z / Multicatalytic endopeptidase complex chain Z / Proteasome subunit Z


Mass: 23745.256 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HELA
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: 22841.701 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HELA
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: 22365.721 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HELA
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: 22199.072 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HELA
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 natural source / Source: (natural) Homo sapiens (human) / Cell line: HELA
References: UniProt: P20618, proteasome endopeptidase complex
#14: 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: 21753.643 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HELA
References: UniProt: P28072, proteasome endopeptidase complex

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

#2: Protein Proteasome subunit alpha type-2 / / Macropain subunit C3 / Multicatalytic endopeptidase complex subunit C3 / Proteasome component C3


Mass: 25525.068 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HELA
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: 27859.896 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HELA
References: UniProt: P25789, proteasome endopeptidase complex
#4: Protein Proteasome subunit alpha type-7 / / Proteasome subunit RC6-1 / Proteasome subunit XAPC7


Mass: 26623.291 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HELA
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: 25406.785 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HELA
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: 26807.551 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HELA
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: 26813.619 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HELA
References: UniProt: P25788, proteasome endopeptidase complex
#8: 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: 27186.174 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HELA
References: UniProt: P60900, 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: Native human 20S proteasome with bound Fabs to the two alpha-4 subunits
Type: COMPLEX
Details: Fab fragment generated by proteolytic cleavage of monoclonal IgG1 antibody.
Entity ID: all / Source: NATURAL
Molecular weightUnits: MEGADALTONS / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4 / Details: PBS was purchased from Sigma # D8537, Switzerland.
Buffer component
IDConc.NameFormulaBuffer-ID
1150 mMSodium ChlorideNaClSodium chloride1
21.5 mMMonopotassium phosphateKH2PO41
38.1 mMDisodium phosphateNa2HPO41
42.6 mMPotassium chlorideKCl1
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Details: 20S proteasome was purified using Fabs and eluted in a buffer containing 1mg/ml tobacco mosaic virus (TMV). The sample contains also unbound Fabs.
Specimen supportGrid material: COPPER / Grid mesh size: 400 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationCryogen name: ETHANE
Details: CryoWriter. (see https://doi.org/10.1016/j.jsb.2016.11.002 for more information)

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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 / Cs: 2.7 mm / C2 aperture diameter: 70 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 6 sec. / Electron dose: 72 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 523
Image scansWidth: 7676 / Height: 7420 / Movie frames/image: 30 / Used frames/image: 0-30

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Processing

SoftwareName: PHENIX / Version: (1.14_3260: phenix.real_space_refine) / Classification: refinement
EM software
IDNameVersionCategoryDetails
1RELION3particle selectionbeta
2SerialEM3.6image acquisition
4CTFFIND4CTF correction
7UCSF Chimera1.13.1model fitting
9PHENIX1.14model refinement
12RELION3classificationbeta
13RELION33D reconstructionbeta
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 523
SymmetryPoint symmetry: C2 (2 fold cyclic)
3D reconstructionResolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 16015 / Symmetry type: POINT
Atomic model buildingPDB-ID: 5LE5

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