+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-24278 | ||||||||||||
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Title | Human PA200-20S proteasome complex | ||||||||||||
Map data | |||||||||||||
Sample |
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Keywords | proteasome / 20S / PA200 / HYDROLASE | ||||||||||||
Function / homology | Function and homology information spermatoproteasome complex / sperm DNA condensation / peptidase activator activity / purine ribonucleoside triphosphate binding / regulation of endopeptidase activity / Regulation of ornithine decarboxylase (ODC) / proteasome core complex / Cross-presentation of soluble exogenous antigens (endosomes) / : / Somitogenesis ...spermatoproteasome complex / sperm DNA condensation / peptidase activator activity / purine ribonucleoside triphosphate binding / regulation of endopeptidase activity / Regulation of ornithine decarboxylase (ODC) / proteasome core complex / Cross-presentation of soluble exogenous antigens (endosomes) / : / Somitogenesis / proteasomal ubiquitin-independent protein catabolic process / myofibril / immune system process / proteasome binding / NF-kappaB binding / proteasome endopeptidase complex / proteasome core complex, beta-subunit complex / proteasome core complex, alpha-subunit complex / threonine-type endopeptidase activity / sarcomere / proteasome complex / ciliary basal body / Regulation of activated PAK-2p34 by proteasome mediated degradation / proteolysis involved in protein catabolic process / 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 / Vpu mediated degradation of CD4 / Assembly of the pre-replicative complex / Degradation of DVL / negative regulation of inflammatory response to antigenic stimulus / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / Dectin-1 mediated noncanonical NF-kB signaling / lipopolysaccharide binding / Hh mutants are degraded by ERAD / Degradation of AXIN / Activation of NF-kappaB in B cells / Degradation of GLI1 by the proteasome / Hedgehog ligand biogenesis / Defective CFTR causes cystic fibrosis / lysine-acetylated histone binding / G2/M Checkpoints / 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 / P-body / 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 / response to virus / Degradation of beta-catenin by the destruction complex / ABC-family proteins mediated transport / 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 / 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 / Separation of Sister Chromatids / Regulation of RUNX2 expression and activity / The role of GTSE1 in G2/M progression after G2 checkpoint / UCH proteinases / KEAP1-NFE2L2 pathway / Antigen processing: Ubiquitination & Proteasome degradation / Downstream TCR signaling / peptidase activity / 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 / proteasome-mediated ubiquitin-dependent protein catabolic process / endopeptidase activity / ficolin-1-rich granule lumen / postsynapse / response to oxidative stress / nuclear body / Ub-specific processing proteases / ribosome / nuclear speck / cadherin binding / intracellular membrane-bounded organelle Similarity search - Function | ||||||||||||
Biological species | Homo sapiens (human) | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.2 Å | ||||||||||||
Authors | Zhao J / Makhija S | ||||||||||||
Funding support | United States, 3 items
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Citation | Journal: Proc Natl Acad Sci U S A / Year: 2022 Title: Structural insights into the human PA28-20S proteasome enabled by efficient tagging and purification of endogenous proteins. Authors: Jianhua Zhao / Suraj Makhija / Chenyu Zhou / Hanxiao Zhang / YongQiang Wang / Monita Muralidharan / Bo Huang / Yifan Cheng / Abstract: The ability to produce folded and functional proteins is a necessity for structural biology and many other biological sciences. This task is particularly challenging for numerous biomedically ...The ability to produce folded and functional proteins is a necessity for structural biology and many other biological sciences. This task is particularly challenging for numerous biomedically important targets in human cells, including membrane proteins and large macromolecular assemblies, hampering mechanistic studies and drug development efforts. Here we describe a method combining CRISPR-Cas gene editing and fluorescence-activated cell sorting to rapidly tag and purify endogenous proteins in HEK cells for structural characterization. We applied this approach to study the human proteasome from HEK cells and rapidly determined cryogenic electron microscopy structures of major proteasomal complexes, including a high-resolution structure of intact human PA28αβ-20S. Our structures reveal that PA28 with a subunit stoichiometry of 3α/4β engages tightly with the 20S proteasome. Addition of a hydrophilic peptide shows that polypeptides entering through PA28 are held in the antechamber of 20S prior to degradation in the proteolytic chamber. This study provides critical insights into an important proteasome complex and demonstrates key methodologies for the tagging of proteins from endogenous sources. | ||||||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_24278.map.gz | 116.2 MB | EMDB map data format | |
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Header (meta data) | emd-24278-v30.xml emd-24278.xml | 28.1 KB 28.1 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_24278_fsc.xml | 11.4 KB | Display | FSC data file |
Images | emd_24278.png | 80.7 KB | ||
Filedesc metadata | emd-24278.cif.gz | 8.8 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-24278 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-24278 | HTTPS FTP |
-Validation report
Summary document | emd_24278_validation.pdf.gz | 654.6 KB | Display | EMDB validaton report |
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Full document | emd_24278_full_validation.pdf.gz | 654.1 KB | Display | |
Data in XML | emd_24278_validation.xml.gz | 12.8 KB | Display | |
Data in CIF | emd_24278_validation.cif.gz | 16.8 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-24278 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-24278 | HTTPS FTP |
-Related structure data
Related structure data | 7naqMC 7nanC 7naoC 7napC 8cvrC 8cvsC 8cvtC 8cxbC C: citing same article (ref.) M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_24278.map.gz / Format: CCP4 / Size: 125 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: 1.2156 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Sample components
+Entire : PA200-20S proteasome complex
+Supramolecule #1: PA200-20S proteasome complex
+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 subunit beta type-7
+Macromolecule #9: Proteasome subunit beta type-3
+Macromolecule #10: Proteasome subunit beta type-2
+Macromolecule #11: Proteasome subunit beta type-5
+Macromolecule #12: Proteasome subunit beta type-1
+Macromolecule #13: Proteasome subunit beta type-4
+Macromolecule #14: Proteasome subunit beta type-6
+Macromolecule #15: Proteasome activator complex subunit 4
+Macromolecule #16: INOSITOL HEXAKISPHOSPHATE
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.2 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI POLARA 300 |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 40.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Experimental equipment | Model: Tecnai Polara / Image courtesy: FEI Company |