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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：Q06323 New Search
6PDB entries
6Biological assembly
39chain/assembly records
Main Difference Dimensions in This Set
Different construct Different assembly state Different experimental method 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
1AVO PROTEASOME ACTIVATOR REG(ALPHA) Deposited 1997-09-18 Assembly 1 Protein homooligomer Homooligomer；Protein × 14 PDB declaration: tetradecameric（14） Consistent with protein count
Chain A 4–63（60 aa）
Chain B 104–242（139 aa）
Chain C 4–63（60 aa）
Chain D 104–242（139 aa）
Chain E 4–63（60 aa）
Chain F 104–242（139 aa）
Chain G 4–63（60 aa）
Chain H 104–242（139 aa）
Chain I 4–63（60 aa）
Chain J 104–242（139 aa）
Chain K 4–63（60 aa）
Chain L 104–242（139 aa）
Chain M 4–63（60 aa）
Chain N 104–242（139 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.1；pH 7.1
Resolution 2.80 Å R-free 0.289
7DR6 PA28alpha-beta in complex with immunoproteasome Deposited 2020-12-26 Assembly 1 Protein heterocomplex Heteromer；Protein × 35 PDB declaration: 35-meric（35） Consistent with protein count
Chain B 1–249（249 aa）
Chain C 1–249（249 aa）
Chain E 1–249（249 aa）
Chain G 1–249（249 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
7DRW Bovine 20S immunoproteasome in complex with two human PA28alpha-beta activators Deposited 2020-12-29 Assembly 1 Protein heterocomplex Heteromer；Protein × 42 PDB declaration: 42-meric（42） Consistent with protein count
Chain I 1–249（249 aa）
Chain J 1–249（249 aa）
Chain L 1–249（249 aa）
Chain N 1–249（249 aa）
Chain Q 1–249（249 aa）
Chain a 1–249（249 aa）
Chain e 1–249（249 aa）
Chain i 1–249（249 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
7NAO Human PA28-20S proteasome complex Deposited 2021-06-22 Assembly 1 Protein heterocomplex Heteromer；Protein × 35 PDB declaration: 35-meric（35） Consistent with protein count
Chain c 1–249（249 aa）
Chain e 1–249（249 aa）
Chain g 1–249（249 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.2
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 Å
7NAP Human PA28-20S-PA28 proteasome complex Deposited 2021-06-22 Assembly 1 Protein heterocomplex Heteromer；Protein × 42 PDB declaration: 42-meric（42） Consistent with protein count
Chain c 1–249（249 aa）
Chain e 1–249（249 aa）
Chain g 1–249（249 aa）
Chain j 1–249（249 aa）
Chain l 1–249（249 aa）
Chain n 1–249（249 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.2
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
8CXB Human PA28-20S (PA28-4a3b) Deposited 2022-05-20 Assembly 1 Protein heterocomplex Heteromer；Protein × 35 PDB declaration: 35-meric（35） Consistent with protein count
Chain d 1–249（249 aa）
Chain f 1–249（249 aa）
Chain h 1–249（249 aa）
Chain i 1–249（249 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 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.