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Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：Q969U7 New Search
13PDB entries
13Biological assembly
16chain/assembly records
Main Difference Dimensions in This Set
Different mutation/modification Different assembly state Different experimental conditions Different structure-quality metrics

Difference tags compare only the current result set; every original PDB and assembly record remains separate.

Related-Structure Differences

Each row represents one biological assembly in one PDB entry; multiple monomers of the same protein are listed separately.

PDB Entry Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Experimental Method Experimental Conditions Structure Quality
8QYJ Human 20S proteasome assembly structure 1 Deposited 2023-10-26 Assembly 1 Protein heterocomplex Heteromer；Protein × 13 PDB declaration: 13-meric（13） Consistent with protein count
Chain J 1–264（264 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 2.73 Å
8QYL Human 20S proteasome assembly intermediate structure 2 Deposited 2023-10-26 Assembly 1 Protein heterocomplex Heteromer；Protein × 12 PDB declaration: 12-meric（12） Consistent with protein count
Chain J 1–264（264 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 2.67 Å
8QYM Human 20S proteasome assembly intermediate structure 3 Deposited 2023-10-26 Assembly 1 Protein heterocomplex Heteromer；Protein × 13 PDB declaration: 13-meric（13） Consistent with protein count
Chain J 1–264（264 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 2.73 Å
8QYN Human 20S proteasome assembly intermediate structure 5 Deposited 2023-10-26 Assembly 1 Protein heterocomplex Heteromer；Protein × 17 PDB declaration: 17-meric（17） Consistent with protein count
Chain J 1–264（264 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 2.88 Å
8QYS Human preholo proteasome 20S core particle Deposited 2023-10-26 Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric（34） Consistent with protein count
Chain J 1–264（264 aa）
Chain a 1–264（264 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 3.89 Å
8QZ9 Human 20S proteasome assembly intermediate structure 4 Deposited 2023-10-26 Assembly 1 Protein heterocomplex Heteromer；Protein × 15 PDB declaration: 15-meric（15） Consistent with protein count
Chain J 1–264（264 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 2.95 Å
8TM3 Human proteasome alpha ring assembly intermediate Deposited 2023-07-28 Assembly 1 Protein heterocomplex Heteromer；Protein × 11 PDB declaration: undecameric（11） Consistent with protein count
Chain d 1–264（264 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.2
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
8TM4 Human pre 13S proteasome assembly intermediate Deposited 2023-07-28 Assembly 1 Protein heterocomplex Heteromer；Protein × 13 PDB declaration: tridecameric（13） Consistent with protein count
Chain d 1–264（264 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.2
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
8TM5 Human mixed 13S proteasome assembly intermediate Deposited 2023-07-28 Assembly 1 Protein heterocomplex Heteromer；Protein × 13 PDB declaration: tridecameric（13） Consistent with protein count
Chain d 1–264（264 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.2
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
8TM6 Human premature 20S proteasome assembly intermediate Deposited 2023-07-28 Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric（34） Consistent with protein count
Chain d 1–264（264 aa）
Chain g 1–264（264 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.2
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.80 Å
8YIX Cryo-EM structure of human proteasome assembly intermediate half-proteasome Deposited 2024-02-29 Assembly 1 Protein heterocomplex Heteromer；Protein × 17 PDB declaration: 17-meric（17） Consistent with protein count
Chain g 1–264（264 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.91 Å
8YIY Cryo-EM structure of human proteasome assembly intermediate preholo-1 Deposited 2024-02-29 Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric（34） Consistent with protein count
Chain d 1–264（264 aa）
Chain g 1–264（264 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.41 Å
8YIZ Cryo-EM structure of human proteasome assembly intermediate preholo-2 Deposited 2024-02-29 Assembly 1 Protein heterocomplex Heteromer；Protein × 30 PDB declaration: 30-meric（30） Consistent with protein count
Chain g 1–264（264 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.79 Å

This page presents structural evidence recorded in PDB/mmCIF.“No recorded non-water small molecule” does not prove that the experimental sample was ligand-free; experimental conditions belong to the PDB experiment, while ligands and copy counts are shown for each biological assembly.