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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：P12755 New Search
4PDB entries
5Biological assembly
5chain/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
1MR1 Crystal Structure of a Smad4-Ski Complex Deposited 2002-09-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 219–313（95 aa） Fragment：Smad4-binding domain
Not recorded ZN ZINC ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；295 K；dioxane, potassium phosphate, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Resolution 2.85 Å R-free 0.280
1MR1 Crystal Structure of a Smad4-Ski Complex Deposited 2002-09-17 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 219–313（95 aa） Fragment：Smad4-binding domain
Not recorded ZN ZINC ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；295 K；dioxane, potassium phosphate, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Resolution 2.85 Å R-free 0.280
1SBX Crystal structure of the Dachshund-homology domain of human SKI Deposited 2004-02-11 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 91–192（102 aa） Fragment：Dachshund-homology domain of human SKI
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 5.5；298 K；PEG 3350, pH 5.5, VAPOR DIFFUSION, temperature 298K
Resolution 1.65 Å R-free 0.206
5XOD Crystal structure of human Smad2-Ski complex Deposited 2017-05-27 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain B 15–40（26 aa） Fragment：UNP residues 15-40
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.6；293 K；0.1 M sodium acetate tri-hydrate pH 4.6 and 1.85 M sodium formate
Resolution 1.85 Å R-free 0.254
6ZVQ Complex between SMAD2 MH2 domain and peptide from Ski corepressor Deposited 2020-07-27 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain B 11–45（35 aa）
Not recorded SO4 SULFATE ION × 6 GOL GLYCEROL × 24 TAR D(-)-TARTARIC ACID × 9 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.6；293 K；1.5M Ammonium Sulphate, 0.15M Sodium Potassium Tartrate, 0.08M Tri-Sodium Citrate pH 5.6, 25% v/v Glycerol
Resolution 2.03 Å R-free 0.210

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.