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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：Q9C0C9 New Search
9PDB entries
9Biological assembly
10chain/assembly records
Main Difference Dimensions in This Set
Different construct Different assembly state Different ligand/ion 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
7UN3 Complex of UBE2O with NAP1L1 and ubiquitylated uL2 Deposited 2022-04-08 Assembly 1 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–1292（1292 aa）
Chain D 1–1292（1292 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
7UN6 Complex of UBE2O with NAP1L1 Deposited 2022-04-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 1–1292（1292 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
9MC4 Cryo-EM structure of Human UBA1-UBE2O-Ub -Transthiolation state 4 Deposited 2025-03-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 1–1292（1292 aa）
Not recorded AMP ADENOSINE MONOPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.32 Å
9MC5 Cryo-EM structure of Human UBA1-UBE2O-Ub -Transthiolation state 3 Deposited 2025-03-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 1–1292（1292 aa）
Not recorded AMP ADENOSINE MONOPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.29 Å
9MC6 Cryo-EM structure of Human UBA1-UBE2O-Ub -Transthiolation state 2 Deposited 2025-03-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 1–1292（1292 aa）
Not recorded AMP ADENOSINE MONOPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.32 Å
9MC7 Cryo-EM structure of Human UBA1-UBE2O-Ub -Recruitment state 4 Deposited 2025-03-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 928–1292（365 aa）
Not recorded AMP ADENOSINE MONOPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.34 Å
9MC9 Cryo-EM structure of Human UBA1-UBE2O-Ub -Transthiolation state 1 Deposited 2025-03-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 928–1292（365 aa）
Not recorded AMP ADENOSINE MONOPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.37 Å
9MCB Cryo-EM structure of Human UBA1-UBE2O-Ub -Recruitment state 1 Deposited 2025-03-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 928–1292（365 aa）
Not recorded AMP ADENOSINE MONOPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.42 Å
9QUG Structure of a UBC-Ubiquitin conjugate Deposited 2025-04-10 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 920–1292（373 aa）
Not recorded GOL GLYCEROL × 4 P4K polyethylene glycol × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.2 M Trimethylamine N-oxide dihydrate, 0.1 M Tris pH 8.5, 20% (w/v) Polyethylene glycol monomethyl ether 2,000
Resolution 1.80 Å R-free 0.192

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.