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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：P50623 New Search
6PDB entries
9Biological assembly
12chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion 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
2EKE Structure of a SUMO-binding-motif mimic bound to Smt3p-Ubc9p: conservation of a noncovalent Ubiquitin-like protein-E2 complex as a platform for selective interactions within a SUMO pathway Deposited 2007-03-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–157（157 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；277 K；18% PEG 3350, 0.2M magnesium chloride, 0.1M Bis-Tris, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Resolution 1.90 Å R-free 0.250
2EKE Structure of a SUMO-binding-motif mimic bound to Smt3p-Ubc9p: conservation of a noncovalent Ubiquitin-like protein-E2 complex as a platform for selective interactions within a SUMO pathway Deposited 2007-03-23 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–157（157 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；277 K；18% PEG 3350, 0.2M magnesium chloride, 0.1M Bis-Tris, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Resolution 1.90 Å R-free 0.250
2GJD Distinct functional domains of Ubc9 dictate cell survival and resistance to genotoxic stress Deposited 2006-03-30 Assembly 1 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–157（157 aa）
Chain B 1–157（157 aa）
Chain C 1–157（157 aa）
Chain D 1–157（157 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；291 K；18% PEG 6000, 0.1M HEPES, 0.1M NaBr, 5mM DTT, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 1.75 Å R-free 0.230
3ONG Crystal structure of UBA2ufd-Ubc9: insights into E1-E2 interactions in Sumo pathways Deposited 2010-08-28 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–157（157 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；277 K；20% PEG3350, 0.1 M Bis-Tris pH 5.5, 0.2 M Li2SO4, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Resolution 2.30 Å R-free 0.251
3ONG Crystal structure of UBA2ufd-Ubc9: insights into E1-E2 interactions in Sumo pathways Deposited 2010-08-28 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 1–157（157 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；277 K；20% PEG3350, 0.1 M Bis-Tris pH 5.5, 0.2 M Li2SO4, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Resolution 2.30 Å R-free 0.251
5JNE E2-SUMO-Siz1 E3-SUMO-PCNA complex Deposited 2016-04-29 Assembly 1 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 1–157（157 aa） Fragment：unp residues 20-98
Mutation：C5S, A129K, K153R ZN ZINC ION × 1 GOL GLYCEROL × 6 6LN ethane-1,2-dithiol × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；291 K；0.1 M Tris-HCl (pH 8.5), 5% PEG 10,000, 0.2 M NaCl, 10% glycerol, 3% dioxane
Resolution 2.85 Å R-free 0.250
5JNE E2-SUMO-Siz1 E3-SUMO-PCNA complex Deposited 2016-04-29 Assembly 2 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain F 1–157（157 aa） Fragment：unp residues 20-98
Mutation：C5S, A129K, K153R ZN ZINC ION × 1 GOL GLYCEROL × 4 6LN ethane-1,2-dithiol × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；291 K；0.1 M Tris-HCl (pH 8.5), 5% PEG 10,000, 0.2 M NaCl, 10% glycerol, 3% dioxane
Resolution 2.85 Å R-free 0.250
6Q83 Crystal structure of the biportin Pdr6 in complex with UBC9 Deposited 2018-12-14 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 2–157（156 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.7；293 K；Sodium cacodylate, magnesium chloride, ethanol
Resolution 4.53 Å R-free 0.271
7P47 Structure of the E3 ligase Smc5/Nse2 in complex with Ubc9-SUMO thioester mimetic Deposited 2021-07-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain C 1–157（157 aa）
Not recorded ZN ZINC ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；311 K；12% PEG8000, 0.2M dimethyl-2-hydroxyethylammoniumpropane sulfonate (NDSB 211), 8% ethylene glycol, 0.1M MES pH 6.5
Resolution 3.31 Å R-free 0.293

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.