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- EMDB-21696: SD-like state of human 26S Proteasome with non-cleavable M1-linke... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-21696 | ||||||||||||
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Title | SD-like state of human 26S Proteasome with non-cleavable M1-linked hexaubiquitin and E3 ubiquitin ligase E6AP/UBE3A | ||||||||||||
![]() | SD-like state of human 26S Proteasome with non-cleavable M1-linked hexaubiquitin and E3 ubiquitin ligase E6AP/UBE3A | ||||||||||||
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![]() | 26S protease / ubiquitin / complex / subunit / HYDROLASE-PROTEIN BINDING complex | ||||||||||||
Function / homology | ![]() positive regulation of inclusion body assembly / Impaired BRCA2 translocation to the nucleus / Impaired BRCA2 binding to SEM1 (DSS1) / thyrotropin-releasing hormone receptor binding / modulation by host of viral transcription / Hydrolases; Acting on peptide bonds (peptidases); Omega peptidases / proteasome accessory complex / integrator complex / purine ribonucleoside triphosphate binding / meiosis I ...positive regulation of inclusion body assembly / Impaired BRCA2 translocation to the nucleus / Impaired BRCA2 binding to SEM1 (DSS1) / thyrotropin-releasing hormone receptor binding / modulation by host of viral transcription / Hydrolases; Acting on peptide bonds (peptidases); Omega peptidases / proteasome accessory complex / integrator complex / purine ribonucleoside triphosphate binding / meiosis I / cytosolic proteasome complex / proteasome regulatory particle / positive regulation of proteasomal protein catabolic process / proteasome regulatory particle, lid subcomplex / proteasome-activating activity / proteasome regulatory particle, base subcomplex / metal-dependent deubiquitinase activity / Proteasome assembly / negative regulation of programmed cell death / protein K63-linked deubiquitination / regulation of endopeptidase activity / Regulation of ornithine decarboxylase (ODC) / 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 / Resolution of D-loop Structures through Synthesis-Dependent Strand Annealing (SDSA) / Cross-presentation of soluble exogenous antigens (endosomes) / proteasome core complex / Resolution of D-loop Structures through Holliday Junction Intermediates / Somitogenesis / K63-linked deubiquitinase activity / Impaired BRCA2 binding to RAD51 / proteasome binding / myofibril / transcription factor binding / regulation of protein catabolic process / immune system process / proteasome storage granule / Presynaptic phase of homologous DNA pairing and strand exchange / blastocyst development / general transcription initiation factor binding / polyubiquitin modification-dependent protein binding / NF-kappaB binding / endopeptidase activator activity / positive regulation of RNA polymerase II transcription preinitiation complex assembly / proteasome assembly / protein deubiquitination / proteasome endopeptidase complex / proteasome core complex, beta-subunit complex / threonine-type endopeptidase activity / proteasome core complex, alpha-subunit complex / mRNA export from nucleus / SARS-CoV-1 targets host intracellular signalling and regulatory pathways / regulation of proteasomal protein catabolic process / enzyme regulator activity / inclusion body / ERAD pathway / proteasome complex / sarcomere / ciliary basal body / Regulation of activated PAK-2p34 by proteasome mediated degradation / Autodegradation of Cdh1 by Cdh1:APC/C / proteolysis involved in protein catabolic process / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / APC/C:Cdc20 mediated degradation of Securin / Asymmetric localization of PCP proteins / Ubiquitin-dependent degradation of Cyclin D / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / TNFR2 non-canonical NF-kB pathway / AUF1 (hnRNP D0) binds and destabilizes mRNA / Vpu mediated degradation of CD4 / Assembly of the pre-replicative complex / stem cell differentiation / Degradation of DVL / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / Dectin-1 mediated noncanonical NF-kB signaling / negative regulation of inflammatory response to antigenic stimulus / Degradation of AXIN / Hh mutants are degraded by ERAD / lipopolysaccharide binding / Activation of NF-kappaB in B cells / Degradation of GLI1 by the proteasome / Hedgehog ligand biogenesis / G2/M Checkpoints / Defective CFTR causes cystic fibrosis / P-body / Negative regulation of NOTCH4 signaling / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Autodegradation of the E3 ubiquitin ligase COP1 / Vif-mediated degradation of APOBEC3G / Regulation of RUNX3 expression and activity / Hedgehog 'on' state / 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 / double-strand break repair via homologous recombination Similarity search - Function | ||||||||||||
Biological species | ![]() | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 5.7 Å | ||||||||||||
![]() | Chen X / Walters KJ | ||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Cryo-EM Reveals Unanchored M1-Ubiquitin Chain Binding at hRpn11 of the 26S Proteasome. Authors: Xiang Chen / Zachary Dorris / Dan Shi / Rick K Huang / Htet Khant / Tara Fox / Natalia de Val / Dewight Williams / Ping Zhang / Kylie J Walters / ![]() Abstract: The 26S proteasome is specialized for regulated protein degradation and formed by a dynamic regulatory particle (RP) that caps a hollow cylindrical core particle (CP) where substrates are proteolyzed. ...The 26S proteasome is specialized for regulated protein degradation and formed by a dynamic regulatory particle (RP) that caps a hollow cylindrical core particle (CP) where substrates are proteolyzed. Its diverse substrates unify as proteasome targets by ubiquitination. We used cryogenic electron microscopy (cryo-EM) to study how human 26S proteasome interacts with M1-linked hexaubiquitin (M1-Ub) unanchored to a substrate and E3 ubiquitin ligase E6AP/UBE3A. Proteasome structures are available with model substrates extending through the RP ATPase ring and substrate-conjugated K63-linked ubiquitin chains present at inhibited deubiquitinating enzyme hRpn11 and the nearby ATPase hRpt4/hRpt5 coiled coil. In this study, we find M1-Ub at the hRpn11 site despite the absence of conjugated substrate, indicating that ubiquitin binding at this location does not require substrate interaction with the RP. Moreover, unanchored M1-Ub binds to this hRpn11 site of the proteasome with the CP gating residues in both the closed and opened conformational states. | ||||||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 24 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 52.8 KB 52.8 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 16 KB | Display | ![]() |
Images | ![]() | 117.5 KB | ||
Filedesc metadata | ![]() | 13.5 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 391.4 KB | Display | ![]() |
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Full document | ![]() | 390.9 KB | Display | |
Data in XML | ![]() | 15 KB | Display | |
Data in CIF | ![]() | 20.5 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6wjnMC ![]() 6wjdC C: citing same article ( M: atomic model generated by this map |
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Similar structure data | |
EM raw data | ![]() Data size: 330.3 Data #1: Motion-corrected single frame micrographs of human 26S Proteasome with non-cleavable M1-linked hexaubiquitin and E3 ubiquitin ligase E6AP/UBE3A [micrographs - single frame]) |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | SD-like state of human 26S Proteasome with non-cleavable M1-linked hexaubiquitin and E3 ubiquitin ligase E6AP/UBE3A | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.365 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
+Entire : SD-like state of human 26S Proteasome with non-cleavable M1-linke...
+Supramolecule #1: SD-like state of human 26S Proteasome with non-cleavable M1-linke...
+Macromolecule #1: 26S proteasome non-ATPase regulatory subunit 1
+Macromolecule #2: 26S proteasome non-ATPase regulatory subunit 3
+Macromolecule #3: 26S proteasome non-ATPase regulatory subunit 12
+Macromolecule #4: 26S proteasome non-ATPase regulatory subunit 11
+Macromolecule #5: 26S proteasome non-ATPase regulatory subunit 6
+Macromolecule #6: 26S proteasome non-ATPase regulatory subunit 7
+Macromolecule #7: 26S proteasome non-ATPase regulatory subunit 13
+Macromolecule #8: 26S proteasome non-ATPase regulatory subunit 4
+Macromolecule #9: 26S proteasome non-ATPase regulatory subunit 14
+Macromolecule #10: 26S proteasome non-ATPase regulatory subunit 8
+Macromolecule #11: 26S proteasome complex subunit SEM1
+Macromolecule #12: Proteasome subunit alpha type-6
+Macromolecule #13: Proteasome subunit alpha type-2
+Macromolecule #14: Proteasome subunit alpha type-4
+Macromolecule #15: Proteasome subunit alpha type-7
+Macromolecule #16: Proteasome subunit alpha type-5
+Macromolecule #17: Proteasome subunit alpha type-1
+Macromolecule #18: Proteasome subunit alpha type-3
+Macromolecule #19: Proteasome subunit beta type-6
+Macromolecule #20: Proteasome subunit beta type-7
+Macromolecule #21: Proteasome subunit beta type-3
+Macromolecule #22: Proteasome subunit beta type-2
+Macromolecule #23: Proteasome subunit beta type-5
+Macromolecule #24: Proteasome subunit beta type-1
+Macromolecule #25: Proteasome subunit beta type-4
+Macromolecule #26: 26S proteasome regulatory subunit 7
+Macromolecule #27: 26S proteasome regulatory subunit 4
+Macromolecule #28: 26S proteasome regulatory subunit 8
+Macromolecule #29: 26S proteasome regulatory subunit 6B
+Macromolecule #30: 26S proteasome regulatory subunit 10B
+Macromolecule #31: 26S proteasome regulatory subunit 6A
+Macromolecule #32: 26S proteasome non-ATPase regulatory subunit 2
+Macromolecule #33: ZINC ION
+Macromolecule #34: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 1 mg/mL | |||||||||||||||||||||
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Buffer | pH: 7.5 Component:
Details: 50 mM Tris, pH 7.5, 50 mM NaCl, 1.5 mM ATP-gamma-S, 5 mM MgCl2, 2 mM DTT, 10 uM zinc sulfate | |||||||||||||||||||||
Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 200 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 30 sec. | |||||||||||||||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 291.15 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 36.64 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Sample stage | Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |