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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：P31431 New Search
5PDB entries
6Biological assembly
10chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification 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
1EJP SOLUTION STRUCTURE OF THE SYNDECAN-4 WHOLE CYTOPLASMIC DOMAIN Deposited 2000-03-03 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 171–198（28 aa） Fragment：WHOLE CYTOPLASMIC DOMAIN
Chain B 171–198（28 aa） Fragment：WHOLE CYTOPLASMIC DOMAIN
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 7.4；298 K；Ionic strength (raw mmCIF value) 50mM sodium phosphate；Pressure 1
NMR measurement conditions pH 7.4；298 K；Ionic strength (raw mmCIF value) 50mM sodium phosphate；Pressure 1
NMR measurement conditions pH 7.4；298 K；Ionic strength (raw mmCIF value) 50mM sodium phosphate；Pressure 1
NMR sample composition 2-4mM Syndecan-4 peptide ; 50mM phosphate buffer; 90% H2O, 10% D2O | 90% H2O/10% D2O
NMR sample composition 2-4mM Syndecan-4 peptide ; 50mM phosphate buffer; 90% H2O, 10% D2O | 90% H2O/10% D2O
NMR sample composition 2-4mM Syndecan-4 peptide ; 50mM phosphate buffer; 100% D2O | 100% D2O
Resolution not provided
1EJQ SOLUTION STRUCTURE OF THE SYNDECAN-4 WHOLE CYTOPLASMIC DOMAIN IN THE PRESENCE OF PHOSPHATIDYLINOSITOL 4,5-BISPHOSPHATE Deposited 2000-03-04 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 171–198（28 aa） Fragment：WHOLE CYTOPLASMIC DOMAIN (RESIDUES 171-198)
Chain B 171–198（28 aa） Fragment：WHOLE CYTOPLASMIC DOMAIN (RESIDUES 171-198)
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 7.4；298 K；Ionic strength (raw mmCIF value) 50mM sodium phosphate；Pressure 1
NMR measurement conditions pH 7.4；298 K；Ionic strength (raw mmCIF value) 50mM sodium phosphate；Pressure 1
NMR measurement conditions pH 7.4；298 K；Ionic strength (raw mmCIF value) 50mM sodium phosphate；Pressure 1
NMR sample composition 2-4mM Syndecan-4 cytoplasmic domain;Molar ratio of 4:1(syndecan-4 peptide:PIP2);50mM sodium phosphate;90% H2O 10% D2O | 90% H2O/10% D2O
NMR sample composition 2-4mM Syndecan-4 cytoplasmic domain;Molar ratio of 4:1(syndecan-4 peptide:PIP2);50mM sodium phosphate;90% H2O 10% D2O | 90% H2O/10% D2O
NMR sample composition 2-4mM Syndecan-4 cytoplasmic domain;Molar ratio of 4:1(syndecan-4 peptide:PIP2);50mM sodium phosphate;90% H2O 10% D2O | 100% D2O
Resolution not provided
1OBY Crystal structure of the complex of PDZ2 of syntenin with a syndecan-4 peptide. Deposited 2003-01-31 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain P 193–198（6 aa） Fragment：LAST 6 RESIDUES, RESIDUES 193-198
Chain Q 193–198（6 aa） Fragment：LAST 6 RESIDUES, RESIDUES 193-198
Not recorded SO4 SULFATE ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.8；SITTING DROP WITH 0.1 M HEPES, PH 6.8, 1.6 M AMMONIUM SULFATE, 20 MM COCL2, AND 0.2 MGSO4
Resolution 1.85 Å R-free 0.226
1YBO Crystal structure of the PDZ tandem of human syntenin with syndecan peptide Deposited 2004-12-21 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain C 182–198（17 aa）
Chain D 182–198（17 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；20% PEG 3350, 0.2M NH4Cl, VAPOR DIFFUSION, SITTING DROP
Resolution 2.30 Å R-free 0.273
8BLV The PDZ domains of human SDCBP with a bound SDC4 C-terminal peptide Deposited 2022-11-10 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 191–198（8 aa）
Not recorded SO4 SULFATE ION × 2 EDO 1,2-ETHANEDIOL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.3；293 K；200 mM sodium sulphate, 100 mM bis-tris-propane, 10% ethylene glycol, 20% PEG 3350
Resolution 1.50 Å R-free 0.222
8BLV The PDZ domains of human SDCBP with a bound SDC4 C-terminal peptide Deposited 2022-11-10 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 191–198（8 aa）
Not recorded SO4 SULFATE ION × 1 EDO 1,2-ETHANEDIOL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.3；293 K；200 mM sodium sulphate, 100 mM bis-tris-propane, 10% ethylene glycol, 20% PEG 3350
Resolution 1.50 Å R-free 0.222

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.