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Open data
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Basic information
| Entry | Database: EMDB / ID: EMD-4860 | |||||||||
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| Title | Human 20S-PA200 Proteasome Complex | |||||||||
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Keywords | proteasome / PA200 / activator / HYDROLASE | |||||||||
| Function / homology | Function and homology informationspermatoproteasome complex / sperm DNA condensation / purine ribonucleoside triphosphate binding / Antigen processing: Ub, ATP-independent proteasomal degradation / sperm glycocalyx / Regulation of ornithine decarboxylase (ODC) / perinuclear theca / Proteasome assembly / proteasome core complex / peptidase activator activity ...spermatoproteasome complex / sperm DNA condensation / purine ribonucleoside triphosphate binding / Antigen processing: Ub, ATP-independent proteasomal degradation / sperm glycocalyx / Regulation of ornithine decarboxylase (ODC) / perinuclear theca / Proteasome assembly / proteasome core complex / peptidase activator activity / Cross-presentation of soluble exogenous antigens (endosomes) / Somitogenesis / proteasome binding / myofibril / proteasomal ubiquitin-independent protein catabolic process / sperm head-tail coupling apparatus / immune system process / NF-kappaB binding / proteasome endopeptidase complex / proteasome core complex, beta-subunit complex / threonine-type endopeptidase activity / proteasome assembly / proteasome core complex, alpha-subunit complex / ciliary tip / : / proteasome complex / sarcomere / 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 / sperm end piece / TNFR2 non-canonical NF-kB pathway / AUF1 (hnRNP D0) binds and destabilizes mRNA / centriole / negative regulation of inflammatory response to antigenic stimulus / P-body / Assembly of the pre-replicative complex / Vpu mediated degradation of CD4 / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / Degradation of DVL / lipopolysaccharide binding / Dectin-1 mediated noncanonical NF-kB signaling / Degradation of CRY and PER proteins / Degradation of AXIN / Hh mutants are degraded by ERAD / Activation of NF-kappaB in B cells / G2/M Checkpoints / Hedgehog ligand biogenesis / Degradation of GLI1 by the proteasome / Defective CFTR causes cystic fibrosis / Autodegradation of the E3 ubiquitin ligase COP1 / Regulation of RUNX3 expression and activity / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Negative regulation of NOTCH4 signaling / Hedgehog 'on' state / APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1 / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / Vif-mediated degradation of APOBEC3G / Ubiquitin-Mediated Degradation of Phosphorylated Cdc25A / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / MAPK6/MAPK4 signaling / Degradation of CDH1 / Degradation of beta-catenin by the destruction complex / Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha / ABC-family proteins mediated transport / CDK-mediated phosphorylation and removal of Cdc6 / CLEC7A (Dectin-1) signaling / SCF(Skp2)-mediated degradation of p27/p21 / FCERI mediated NF-kB activation / response to virus / Regulation of expression of SLITs and ROBOs / 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 / The role of GTSE1 in G2/M progression after G2 checkpoint / Separation of Sister Chromatids / KEAP1-NFE2L2 pathway / UCH proteinases / Downstream TCR signaling / peptidase activity / Antigen processing: Ubiquitination & Proteasome degradation / sperm principal piece / RUNX1 regulates transcription of genes involved in differentiation of HSCs / ER-Phagosome pathway / Neddylation / regulation of inflammatory response / response to oxidative stress / sperm midpiece / secretory granule lumen / endopeptidase activity / ficolin-1-rich granule lumen / proteasome-mediated ubiquitin-dependent protein catabolic process Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.0 Å | |||||||||
Authors | Toste Rego A / da Fonseca PCA | |||||||||
| Funding support | United Kingdom, 1 items
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Citation | Journal: Mol Cell / Year: 2019Title: 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. | |||||||||
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Structure visualization
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| Structure viewer | EM map: SurfView Molmil Jmol/JSmol |
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_4860.map.gz | 675.4 MB | EMDB map data format | |
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| Header (meta data) | emd-4860-v30.xml emd-4860.xml | 36.8 KB 36.8 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_4860_fsc.xml | 19.2 KB | Display | FSC data file |
| Images | emd_4860.png | 98.2 KB | ||
| Filedesc metadata | emd-4860.cif.gz | 10.2 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-4860 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-4860 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 6reyMC ![]() 4877C ![]() 6rgqC M: atomic model generated by this map C: citing same article ( |
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| Similar structure data |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_4860.map.gz / Format: CCP4 / Size: 729 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 0.81 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 : Human 20S-PA200 Proteasome complex
+Supramolecule #1: Human 20S-PA200 Proteasome complex
+Supramolecule #2: 20S Proteasome
+Supramolecule #3: PA200 activator
+Macromolecule #1: Proteasome subunit alpha type-6
+Macromolecule #2: Proteasome subunit alpha type-2
+Macromolecule #3: Proteasome subunit alpha type-4
+Macromolecule #4: Proteasome subunit alpha type-7
+Macromolecule #5: Proteasome subunit alpha type-5
+Macromolecule #6: Proteasome subunit alpha type-1
+Macromolecule #7: Proteasome subunit alpha type-3
+Macromolecule #8: Proteasome subunit beta type-6
+Macromolecule #9: Proteasome subunit beta type-7
+Macromolecule #10: Proteasome subunit beta type-3
+Macromolecule #11: Proteasome subunit beta type-2
+Macromolecule #12: Proteasome subunit beta type-5
+Macromolecule #13: Proteasome subunit beta type-1
+Macromolecule #14: Proteasome subunit beta type-4
+Macromolecule #15: Proteasome activator complex subunit 4
+Macromolecule #16: INOSITOL HEXAKISPHOSPHATE
+Macromolecule #17: [(1~{S},2~{R},3~{R},4~{S},5~{S},6~{R})-2-[oxidanyl(phosphonooxy)p...
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Concentration | 0.1 mg/mL | ||||||||||||
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| Buffer | pH: 7.4 Component:
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| Grid | Model: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Support film - Material: CARBON / Support film - topology: CONTINUOUS / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 30 sec. / Pretreatment - Atmosphere: AIR | ||||||||||||
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 295.15 K / Instrument: FEI VITROBOT MARK IV | ||||||||||||
| Details | The sample was homogeneous |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: FEI FALCON III (4k x 4k) / Detector mode: COUNTING / Number real images: 717 / Average exposure time: 60.0 sec. / Average electron dose: 45.7 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal magnification: 95000 |
| Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
| Initial model | PDB ID: Chain - Source name: PDB / Chain - Initial model type: experimental model |
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| Details | The model of the human recombinant 20S proteasome was built based on PDB: 5LE5 using real-space refinement in Coot and Phenix |
| Refinement | Space: REAL / Protocol: FLEXIBLE FIT |
| Output model | ![]() PDB-6rey: |
-Atomic model buiding 2
| Details | the model for the human PA200 derived from Phyre2 and I-Tasser. These PA200 models were used as initial guides for the assignment of secondary structure using real-space refinement in Coot and Phenix, followed by correction of the sequence register using the amino acid side chain densities clearly resolved in our cryo-EM map. Connecting loops and all other regions were built ab initio from the cryo-EM density. |
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| Refinement | Protocol: AB INITIO MODEL |
| Output model | ![]() PDB-6rey: |
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About Yorodumi



Keywords
Homo sapiens (human)
Authors
United Kingdom, 1 items
Citation
UCSF Chimera














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