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- PDB-5t0c: Structural basis for dynamic regulation of the human 26S proteasome -
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Open data
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Basic information
Entry | Database: PDB / ID: 5t0c | ||||||
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Title | Structural basis for dynamic regulation of the human 26S proteasome | ||||||
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![]() | HYDROLASE / ubiquitin-proteasome system / AAA-ATPase | ||||||
Function / homology | ![]() positive regulation of inclusion body assembly / thyrotropin-releasing hormone receptor binding / modulation by host of viral transcription / Impaired BRCA2 translocation to the nucleus / Impaired BRCA2 binding to SEM1 (DSS1) / cytosolic proteasome complex / Hydrolases; Acting on peptide bonds (peptidases); Omega peptidases / proteasome accessory complex / integrator complex / purine ribonucleoside triphosphate binding ...positive regulation of inclusion body assembly / thyrotropin-releasing hormone receptor binding / modulation by host of viral transcription / Impaired BRCA2 translocation to the nucleus / Impaired BRCA2 binding to SEM1 (DSS1) / cytosolic proteasome complex / Hydrolases; Acting on peptide bonds (peptidases); Omega peptidases / proteasome accessory complex / integrator complex / purine ribonucleoside triphosphate binding / meiosis I / proteasome regulatory particle / positive regulation of proteasomal protein catabolic process / proteasome-activating activity / proteasome regulatory particle, lid subcomplex / proteasome regulatory particle, base subcomplex / metal-dependent deubiquitinase activity / negative regulation of programmed cell death / protein K63-linked deubiquitination / Regulation of ornithine decarboxylase (ODC) / Proteasome assembly / Homologous DNA Pairing and Strand Exchange / Defective homologous recombination repair (HRR) due to BRCA1 loss of function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA1 binding function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA2/RAD51/RAD51C binding function / Cross-presentation of soluble exogenous antigens (endosomes) / Resolution of D-loop Structures through Synthesis-Dependent Strand Annealing (SDSA) / proteasome core complex / Resolution of D-loop Structures through Holliday Junction Intermediates / Somitogenesis / K63-linked deubiquitinase activity / Impaired BRCA2 binding to RAD51 / proteasome binding / transcription factor binding / regulation of protein catabolic process / myofibril / proteasome storage granule / Presynaptic phase of homologous DNA pairing and strand exchange / general transcription initiation factor binding / blastocyst development / polyubiquitin modification-dependent protein binding / immune system process / positive regulation of RNA polymerase II transcription preinitiation complex assembly / protein deubiquitination / endopeptidase activator activity / NF-kappaB binding / proteasome endopeptidase complex / proteasome core complex, beta-subunit complex / proteasome assembly / threonine-type endopeptidase activity / proteasome core complex, alpha-subunit complex / mRNA export from nucleus / SARS-CoV-1 targets host intracellular signalling and regulatory pathways / inclusion body / enzyme regulator activity / ERAD pathway / regulation of proteasomal protein catabolic process / proteasome complex / proteolysis involved in protein catabolic process / sarcomere / Regulation of activated PAK-2p34 by proteasome mediated degradation / Autodegradation of Cdh1 by Cdh1:APC/C / APC/C:Cdc20 mediated degradation of Securin / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / Asymmetric localization of PCP proteins / Ubiquitin-dependent degradation of Cyclin D / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / stem cell differentiation / TNFR2 non-canonical NF-kB pathway / AUF1 (hnRNP D0) binds and destabilizes mRNA / Vpu mediated degradation of CD4 / Assembly of the pre-replicative complex / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / Degradation of DVL / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / Dectin-1 mediated noncanonical NF-kB signaling / lipopolysaccharide binding / Degradation of AXIN / Hh mutants are degraded by ERAD / negative regulation of inflammatory response to antigenic stimulus / P-body / Activation of NF-kappaB in B cells / Degradation of GLI1 by the proteasome / Hedgehog ligand biogenesis / G2/M Checkpoints / Defective CFTR causes cystic fibrosis / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Autodegradation of the E3 ubiquitin ligase COP1 / Negative regulation of NOTCH4 signaling / Vif-mediated degradation of APOBEC3G / Regulation of RUNX3 expression and activity / double-strand break repair via homologous recombination / Hedgehog 'on' state / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1 / MAPK6/MAPK4 signaling / : Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.8 Å | ||||||
![]() | Chen, S. / Wu, J. / Lu, Y. / Ma, Y.B. / Lee, B.H. / Yu, Z. / Ouyang, Q. / Finley, D. / Kirschner, M.W. / Mao, Y. | ||||||
![]() | ![]() Title: Structural basis for dynamic regulation of the human 26S proteasome. Authors: Shuobing Chen / Jiayi Wu / Ying Lu / Yong-Bei Ma / Byung-Hoon Lee / Zhou Yu / Qi Ouyang / Daniel J Finley / Marc W Kirschner / Youdong Mao / ![]() ![]() Abstract: The proteasome is the major engine of protein degradation in all eukaryotic cells. At the heart of this machine is a heterohexameric ring of AAA (ATPases associated with diverse cellular activities) ...The proteasome is the major engine of protein degradation in all eukaryotic cells. At the heart of this machine is a heterohexameric ring of AAA (ATPases associated with diverse cellular activities) proteins that unfolds ubiquitylated target proteins that are concurrently translocated into a proteolytic chamber and degraded into peptides. Using cryoelectron microscopy, we determined a near-atomic-resolution structure of the 2.5-MDa human proteasome in its ground state, as well as subnanometer-resolution structures of the holoenzyme in three alternative conformational states. The substrate-unfolding AAA-ATPase channel is narrowed by 10 inward-facing pore loops arranged into two helices that run in parallel with each other, one hydrophobic in character and the other highly charged. The gate of the core particle was unexpectedly found closed in the ground state and open in only one of the alternative states. Coordinated, stepwise conformational changes of the regulatory particle couple ATP hydrolysis to substrate translocation and regulate gating of the core particle, leading to processive degradation. | ||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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PDBx/mmCIF format | ![]() | 7.5 MB | Display | ![]() |
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PDB format | ![]() | Display | ![]() | |
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-Validation report
Summary document | ![]() | 2.1 MB | Display | ![]() |
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Full document | ![]() | 2.1 MB | Display | |
Data in XML | ![]() | 428.6 KB | Display | |
Data in CIF | ![]() | 690 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8332MC ![]() 8333MC ![]() 8334C ![]() 8335C ![]() 8336C ![]() 8337C ![]() 5t0gC ![]() 5t0hC ![]() 5t0iC ![]() 5t0jC M: map data used to model this data C: citing same article ( |
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Similar structure data | |
EM raw data | ![]() Data size: 2.0 TB Data #1: Drift-corrected micrographs of human 26S proteasome holoenzyme [micrographs - single frame] Data #2: Classified particle datasets for the human proteasome in four conformational states [picked particles - multiframe - processed]) |
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Links
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Assembly
Deposited unit | ![]()
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Components
-26S proteasome non-ATPase regulatory subunit ... , 11 types, 22 molecules AUBUAVBVAWBWAXBXAYBYAZBZAaBaAbBbAcBcAdBdAfBf
#1: Protein | Mass: 105958.234 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #2: Protein | Mass: 60935.297 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #3: Protein | Mass: 52979.359 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #4: Protein | Mass: 47526.688 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #5: Protein | Mass: 45592.285 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #6: Protein | Mass: 37086.441 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #7: Protein | Mass: 42995.359 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #8: Protein | Mass: 40781.590 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #9: Protein | Mass: 34620.023 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: O00487, Hydrolases; Acting on peptide bonds (peptidases); Omega peptidases #10: Protein | Mass: 30039.699 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #12: Protein | Mass: 100313.625 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() |
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-Protein , 1 types, 2 molecules AeBe
#11: Protein | Mass: 8284.611 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() |
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-26S protease regulatory subunit ... , 6 types, 12 molecules AABAABBBADBDAEBEAFBFACBC
#13: Protein | Mass: 48700.805 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #14: Protein | Mass: 49260.504 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #15: Protein | Mass: 47426.141 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #16: Protein | Mass: 44241.008 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #17: Protein | Mass: 49266.457 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #18: Protein | Mass: 45694.047 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() |
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-Proteasome subunit alpha type- ... , 7 types, 14 molecules AGBGAHBHAIBIAJBJAKBKALBLAMBM
#19: Protein | Mass: 27301.262 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: P60900, proteasome endopeptidase complex #20: Protein | Mass: 25796.338 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: P25787, proteasome endopeptidase complex #21: Protein | Mass: 29394.648 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: P25789, proteasome endopeptidase complex #22: Protein | Mass: 27798.695 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: O14818, proteasome endopeptidase complex #23: Protein | Mass: 26304.779 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: P28066, proteasome endopeptidase complex #24: Protein | Mass: 30150.277 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: P25786, proteasome endopeptidase complex #25: Protein | Mass: 28338.057 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: P25788, proteasome endopeptidase complex |
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-Proteasome subunit beta type- ... , 7 types, 14 molecules ANBNAOBOAPBPAQBQARBRASBSATBT
#26: Protein | Mass: 25246.455 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: P28072, proteasome endopeptidase complex #27: Protein | Mass: 29869.223 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: Q99436, proteasome endopeptidase complex #28: Protein | Mass: 22841.701 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: P49720, proteasome endopeptidase complex #29: Protein | Mass: 22864.277 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: P49721, proteasome endopeptidase complex #30: Protein | Mass: 28379.053 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: P28074, proteasome endopeptidase complex #31: Protein | Mass: 26391.201 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: P20618, proteasome endopeptidase complex #32: Protein | Mass: 29099.986 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: P28070, proteasome endopeptidase complex |
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-Non-polymers , 3 types, 14 molecules 




#33: Chemical | #34: Chemical | ChemComp-ATP / #35: Chemical | ChemComp-ADP / |
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-Details
Has protein modification | Y |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: Human 26S proteasome holoenzyme / Type: COMPLEX / Entity ID: #1-#32 / Source: MULTIPLE SOURCES | ||||||||||||||||||||||||||||||
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Molecular weight | Value: 2.5 MDa / Experimental value: YES | ||||||||||||||||||||||||||||||
Buffer solution | pH: 7.5 | ||||||||||||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 1.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||||
Specimen support | Grid material: COPPER / Grid mesh size: 400 divisions/in. / Grid type: C-Flat R1/1 and R1.2/1.3 | ||||||||||||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Talos Arctica / Image courtesy: FEI Company |
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Microscopy | Model: FEI TECNAI ARCTICA |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 21000 X / Calibrated magnification: 28736 X / Nominal defocus max: -3000 nm / Nominal defocus min: -1000 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm / Alignment procedure: COMA FREE |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Average exposure time: 9 sec. / Electron dose: 30 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 12 / Num. of real images: 10367 |
Image scans | Sampling size: 5 µm / Width: 7420 / Height: 7676 / Movie frames/image: 30 / Used frames/image: 3-20 |
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Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 528196 | ||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C2 (2 fold cyclic) | ||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 86420 / Algorithm: BACK PROJECTION / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||
Atomic model building | B value: 80 / Protocol: AB INITIO MODEL |