+
Open data
-
Basic information
Entry | ![]() | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Title | Human 20S proteasome assembly structure 1 | |||||||||||||||
![]() | ||||||||||||||||
![]() |
| |||||||||||||||
![]() | Complex / HYDROLASE | |||||||||||||||
Function / homology | ![]() cerebellar granule cell precursor proliferation / purine ribonucleoside triphosphate binding / regulation of endopeptidase activity / protein folding chaperone complex / Regulation of ornithine decarboxylase (ODC) / Proteasome assembly / Cross-presentation of soluble exogenous antigens (endosomes) / proteasome core complex / Somitogenesis / proteasome core complex assembly ...cerebellar granule cell precursor proliferation / purine ribonucleoside triphosphate binding / regulation of endopeptidase activity / protein folding chaperone complex / Regulation of ornithine decarboxylase (ODC) / Proteasome assembly / Cross-presentation of soluble exogenous antigens (endosomes) / proteasome core complex / Somitogenesis / proteasome core complex assembly / proteasome binding / mitotic spindle assembly checkpoint signaling / myofibril / immune system process / proteasome assembly / NF-kappaB binding / proteasome endopeptidase complex / proteasome core complex, beta-subunit complex / threonine-type endopeptidase activity / proteasome core complex, alpha-subunit complex / chaperone-mediated protein complex assembly / proteasome complex / sarcomere / proteolysis involved in protein catabolic process / Regulation of activated PAK-2p34 by proteasome mediated degradation / Autodegradation of Cdh1 by Cdh1:APC/C / 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 / 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 / Degradation of AXIN / Hh mutants are degraded by ERAD / lipopolysaccharide binding / Activation of NF-kappaB in B cells / negative regulation of inflammatory response to antigenic stimulus / Degradation of GLI1 by the proteasome / G2/M Checkpoints / P-body / Hedgehog ligand biogenesis / Defective CFTR causes cystic fibrosis / Autodegradation of the E3 ubiquitin ligase COP1 / Negative regulation of NOTCH4 signaling / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / 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 / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / MAPK6/MAPK4 signaling / APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1 / Degradation of beta-catenin by the destruction complex / Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha / response to virus / ABC-family proteins mediated transport / CDK-mediated phosphorylation and removal of Cdc6 / CLEC7A (Dectin-1) signaling / SCF(Skp2)-mediated degradation of p27/p21 / Regulation of expression of SLITs and ROBOs / FCERI mediated NF-kB activation / nuclear matrix / Regulation of PTEN stability and activity / Interleukin-1 signaling / Orc1 removal from chromatin / Regulation of RAS by GAPs / Regulation of RUNX2 expression and activity / Separation of Sister Chromatids / The role of GTSE1 in G2/M progression after G2 checkpoint / UCH proteinases / KEAP1-NFE2L2 pathway / Antigen processing: Ubiquitination & Proteasome degradation / Downstream TCR signaling / positive regulation of NF-kappaB transcription factor activity / RUNX1 regulates transcription of genes involved in differentiation of HSCs / Neddylation / ER-Phagosome pathway / regulation of inflammatory response / secretory granule lumen / molecular adaptor activity / endopeptidase activity / proteasome-mediated ubiquitin-dependent protein catabolic process / ficolin-1-rich granule lumen / nuclear body / Ub-specific processing proteases / ribosome / nuclear speck / intracellular membrane-bounded organelle / centrosome / ubiquitin protein ligase binding / synapse / Neutrophil degranulation Similarity search - Function | |||||||||||||||
Biological species | ![]() | |||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.73 Å | |||||||||||||||
![]() | Schulman BA / Hanna JW / Harper JW / Adolf F / Du J / Rawson SD / Walsh Jr RM / Goodall EA | |||||||||||||||
Funding support | ![]() ![]()
| |||||||||||||||
![]() | Journal: bioRxiv / Year: 2024 Title: Visualizing chaperone-mediated multistep assembly of the human 20S proteasome. Authors: Frank Adolf / Jiale Du / Ellen A Goodall / Richard M Walsh / Shaun Rawson / Susanne von Gronau / J Wade Harper / John Hanna / Brenda A Schulman / ![]() ![]() Abstract: Dedicated assembly factors orchestrate stepwise production of many molecular machines, including the 28-subunit proteasome core particle (CP) that mediates protein degradation. Here, we report cryo- ...Dedicated assembly factors orchestrate stepwise production of many molecular machines, including the 28-subunit proteasome core particle (CP) that mediates protein degradation. Here, we report cryo-EM reconstructions of seven recombinant human subcomplexes that visualize all five chaperones and the three active site propeptides across a wide swath of the assembly pathway. Comparison of these chaperone-bound intermediates and a matching mature CP reveals molecular mechanisms determining the order of successive subunit additions, and how proteasome subcomplexes and assembly factors structurally adapt upon progressive subunit incorporation to stabilize intermediates, facilitate the formation of subsequent intermediates, and ultimately rearrange to coordinate proteolytic activation with gated access to active sites. The structural findings reported here explain many previous biochemical and genetic observations. This work establishes a methodologic approach for structural analysis of multiprotein complex assembly intermediates, illuminates specific functions of assembly factors, and reveals conceptual principles underlying human proteasome biogenesis. | |||||||||||||||
History |
|
-
Structure visualization
Supplemental images |
---|
-
Downloads & links
-EMDB archive
Map data | ![]() | 53.2 MB | ![]() | |
---|---|---|---|---|
Header (meta data) | ![]() ![]() | 32.5 KB 32.5 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 9.9 KB | Display | ![]() |
Images | ![]() | 49.4 KB | ||
Masks | ![]() | 103 MB | ![]() | |
Filedesc metadata | ![]() | 8 KB | ||
Others | ![]() ![]() ![]() | 88 MB 95.8 MB 95.8 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 913.4 KB | Display | ![]() |
---|---|---|---|---|
Full document | ![]() | 913 KB | Display | |
Data in XML | ![]() | 18.5 KB | Display | |
Data in CIF | ![]() | 23.8 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8qyjMC ![]() 8qylC ![]() 8qymC ![]() 8qynC ![]() 8qyoC ![]() 8qysC ![]() 8qz9C M: atomic model generated by this map C: citing same article ( |
---|---|
Similar structure data | Similarity search - Function & homology ![]() |
-
Links
EMDB pages | ![]() ![]() |
---|---|
Related items in Molecule of the Month |
-
Map
File | ![]() | ||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.8512 Å | ||||||||||||||||||||||||||||||||||||
Density |
| ||||||||||||||||||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
|
-Supplemental data
-Mask #1
File | ![]() | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & Slices |
| ||||||||||||
Density Histograms |
-Additional map: #1
File | emd_18755_additional_1.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & Slices |
| ||||||||||||
Density Histograms |
-Half map: #2
File | emd_18755_half_map_1.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & Slices |
| ||||||||||||
Density Histograms |
-Half map: #1
File | emd_18755_half_map_2.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & Slices |
| ||||||||||||
Density Histograms |
-
Sample components
+Entire : Human 20S proteasome assembly intermediate map 1
+Supramolecule #1: Human 20S proteasome assembly intermediate map 1
+Macromolecule #1: Proteasome subunit alpha type-2
+Macromolecule #2: Proteasome subunit alpha type-4
+Macromolecule #3: Proteasome subunit alpha type-7
+Macromolecule #4: Proteasome subunit alpha type-5
+Macromolecule #5: Proteasome subunit alpha type-1
+Macromolecule #6: Proteasome subunit alpha type-3
+Macromolecule #7: Proteasome subunit alpha type-6
+Macromolecule #8: Proteasome maturation protein
+Macromolecule #9: Proteasome assembly chaperone 1
+Macromolecule #10: Proteasome assembly chaperone 2
+Macromolecule #11: Proteasome subunit beta type-7
+Macromolecule #12: Proteasome assembly chaperone 3
+Macromolecule #13: Proteasome assembly chaperone 4
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
![]() | single particle reconstruction |
Aggregation state | particle |
-
Sample preparation
Buffer | pH: 7.5 |
---|---|
Vitrification | Cryogen name: ETHANE-PROPANE |
-
Electron microscopy
Microscope | FEI TITAN KRIOS |
---|---|
Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 66.9 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.6 µm / Nominal defocus min: 1.0 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |