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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：P82176 New Search
3PDB entries
6Biological assembly
12chain/assembly records
Main Difference Dimensions in This Set
Different mutation/modification 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
3SSB Structure of Insect Metalloproteinase Inhibitor in Complex with Thermolysin Deposited 2011-07-08 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain C 19–56（38 aa） Fragment：UNP residues 19-56
Chain I 57–88（32 aa） Fragment：UNP residues 57-88
Not recorded GOL GLYCEROL × 2 ZN ZINC ION × 1 CA CALCIUM ION × 3 NA SODIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；293 K；20% w/v PEG 4000, 0.2 M sodium acetate, 0.1 M Tris-HCl, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 1.80 Å R-free 0.193
3SSB Structure of Insect Metalloproteinase Inhibitor in Complex with Thermolysin Deposited 2011-07-08 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain D 19–56（38 aa） Fragment：UNP residues 19-56
Chain J 57–88（32 aa） Fragment：UNP residues 57-88
Not recorded GOL GLYCEROL × 1 ZN ZINC ION × 1 CA CALCIUM ION × 3 NA SODIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；293 K；20% w/v PEG 4000, 0.2 M sodium acetate, 0.1 M Tris-HCl, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 1.80 Å R-free 0.193
7SKL Complex between S. aureus aureolysin and IMPI mutant I57I Deposited 2021-10-21 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 19–56（38 aa）
Chain E 57–88（32 aa）
Mutation：I57F CA CALCIUM ION × 3 ZN ZINC ION × 1 EDO 1,2-ETHANEDIOL × 5 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；Best crystals of aureolysin in complex with IMPI mutant I57F were obtained at 20 dgrees with protein solutions consisting of 5 mg/mL of aureolysin and 2.9 mg/mL of IMPI (peptidase:inhibitor molar ratio of 1:2.5) in 50 mM Tris-HCl, 150 mM sodium chloride, 1.6 mM calcium chloride, 8.3 microM zinc chloride, pH 8.0, which was mixed with reservoir solution comprising 0.1 M Bis-Tris, 25% (w/v) PEG 3350, pH 5.5.
Resolution 1.60 Å R-free 0.188
7SKL Complex between S. aureus aureolysin and IMPI mutant I57I Deposited 2021-10-21 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain D 19–56（38 aa）
Chain F 57–88（32 aa）
Mutation：I57F CA CALCIUM ION × 3 ZN ZINC ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；Best crystals of aureolysin in complex with IMPI mutant I57F were obtained at 20 dgrees with protein solutions consisting of 5 mg/mL of aureolysin and 2.9 mg/mL of IMPI (peptidase:inhibitor molar ratio of 1:2.5) in 50 mM Tris-HCl, 150 mM sodium chloride, 1.6 mM calcium chloride, 8.3 microM zinc chloride, pH 8.0, which was mixed with reservoir solution comprising 0.1 M Bis-Tris, 25% (w/v) PEG 3350, pH 5.5.
Resolution 1.60 Å R-free 0.188
7SKM Complex between S. aureus aureolysin and wt IMPI. Deposited 2021-10-21 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 19–56（38 aa）
Chain E 57–88（32 aa）
Not recorded CA CALCIUM ION × 3 ZN ZINC ION × 1 EDO 1,2-ETHANEDIOL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；293 K；Best crystals of aureolysin in complex with either IMPI variant were obtained at 20 degrees with protein solutions consisting of 5 mg/mL of aureolysin and 2.9 mg/mL of IMPI (peptidase:inhibitor molar ratio of 1:2.5) in 50 mM Tris-HCl, 150 mM sodium chloride, 1.6 mM calcium chloride, 8.3 microM zinc chloride, pH 8.0, which was mixed with reservoir solution comprising 0.1 M Bis-Tris, 25% (w/v) PEG 3350, pH 5.5.
Resolution 1.85 Å R-free 0.219
7SKM Complex between S. aureus aureolysin and wt IMPI. Deposited 2021-10-21 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain D 19–56（38 aa）
Chain F 57–88（32 aa）
Not recorded CA CALCIUM ION × 3 ZN ZINC ION × 1 EDO 1,2-ETHANEDIOL × 1 PEG DI(HYDROXYETHYL)ETHER × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；293 K；Best crystals of aureolysin in complex with either IMPI variant were obtained at 20 degrees with protein solutions consisting of 5 mg/mL of aureolysin and 2.9 mg/mL of IMPI (peptidase:inhibitor molar ratio of 1:2.5) in 50 mM Tris-HCl, 150 mM sodium chloride, 1.6 mM calcium chloride, 8.3 microM zinc chloride, pH 8.0, which was mixed with reservoir solution comprising 0.1 M Bis-Tris, 25% (w/v) PEG 3350, pH 5.5.
Resolution 1.85 Å R-free 0.219

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.