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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：P03973 New Search
2PDB entries
3Biological assembly
3chain/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
2Z7F Crystal structure of the complex of human neutrophil elastase with 1/2SLPI Deposited 2007-08-20 Assembly 1 Other combination Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain I 83–132（50 aa） Fragment：WAP 2 domain
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；293 K；0.1M Na-Acetate, 2.0M Na-Formate, pH 4.5, VAPOR DIFFUSION, SITTING DROP, temperature 293.0K
Resolution 1.70 Å R-free 0.231
4DOQ Crystal structure of the complex of Porcine Pancreatic Trypsin with 1/2SLPI Deposited 2012-02-10 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 85–131（47 aa） Fragment：C-terminal domain
Not recorded XPE 3,6,9,12,15,18,21,24,27-NONAOXANONACOSANE-1,29-DIOL × 1 SO4 SULFATE ION × 3 CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；298 K；25% PEG4000, 0.1M Na-Citrate, 200mM Ammonium Sulfate, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.00 Å R-free 0.242
4DOQ Crystal structure of the complex of Porcine Pancreatic Trypsin with 1/2SLPI Deposited 2012-02-10 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 85–131（47 aa） Fragment：C-terminal domain
Not recorded SO4 SULFATE ION × 3 CA CALCIUM ION × 1 P6G HEXAETHYLENE GLYCOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；298 K；25% PEG4000, 0.1M Na-Citrate, 200mM Ammonium Sulfate, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.00 Å R-free 0.242

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.