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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：Q966X9 New Search
8PDB entries
11Biological assembly
11chain/assembly records
Main Difference Dimensions in This Set
Different construct 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
2FO8 Solution structure of the Trypanosoma cruzi cysteine protease inhibitor chagasin Deposited 2006-01-13 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 2–110（109 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 5.6；298 K；Ionic strength (raw mmCIF value) 50 mM NaCl；Pressure 1
NMR sample composition 1.19 mM unlabeled chagasin | 90% H2O / 10% D2O; 20mM phosphate buffer
NMR sample composition 1.19 mM unlabeled chagasin | 100% D2O; 20mM phosphate buffer
NMR sample composition 0.52 mM U-15N chagasin | 90% H2O / 10% D2O; 20mM phosphate buffer
NMR sample composition 0.73 mM U-15N,13C chagasin | 100% D2O; 20mM phosphate buffer
NMR sample composition 0.3 mM U-15N,13C chagasin | 90% H2O / 10% D2O; 20mM phosphate buffer
Resolution not provided
2H7W Crystal structure of Chagasin, the endogenous cysteine-protease inhibitor from Trypanosoma cruzi Deposited 2006-06-05 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–110（110 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；291 K；protein: 15 mg/ml in 10 mM tris-Hcl, pH 7.4, 0.1 M sodium chloride. reservoir: 15% PEG 8000, 0.1M ammonium sulphate, 0.1M cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291.0K
Resolution 1.70 Å R-free 0.238
2H7W Crystal structure of Chagasin, the endogenous cysteine-protease inhibitor from Trypanosoma cruzi Deposited 2006-06-05 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–110（110 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；291 K；protein: 15 mg/ml in 10 mM tris-Hcl, pH 7.4, 0.1 M sodium chloride. reservoir: 15% PEG 8000, 0.1M ammonium sulphate, 0.1M cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291.0K
Resolution 1.70 Å R-free 0.238
2NNR Crystal structure of chagasin, cysteine protease inhibitor from Trypanosoma cruzi Deposited 2006-10-24 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–110（110 aa）
Not recorded SO4 SULFATE ION × 1 GOL GLYCEROL × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；291 K；1.5M Lithium Sulfate, 0.1M Hepes pH 8.5, protein concentration 8 mg/ml, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 1.70 Å R-free 0.216
2NNR Crystal structure of chagasin, cysteine protease inhibitor from Trypanosoma cruzi Deposited 2006-10-24 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–110（110 aa）
Not recorded GOL GLYCEROL × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；291 K；1.5M Lithium Sulfate, 0.1M Hepes pH 8.5, protein concentration 8 mg/ml, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 1.70 Å R-free 0.216
2NQD Crystal structure of cysteine protease inhibitor, chagasin, in complex with human cathepsin L Deposited 2006-10-31 Assembly 1 Other combination Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 2–110（109 aa）
Not recorded NA SODIUM ION × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.6；291 K；20% iso-Propanol, 20% PEG 4000, 0.1M Na Citrate pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 1.75 Å R-free 0.188
2OUL The Structure of Chagasin in Complex with a Cysteine Protease Clarifies the Binding Mode and Evolution of a New Inhibitor Family Deposited 2007-02-11 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–110（110 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；277 K；20% (v/v) PEG-300, 0.1 M Tris pH 8.5, 5% (w/v) PEG8000, and 10-15% (v/v) glycerol, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 277K, pH 7.00
Resolution 2.20 Å R-free 0.232
3CBJ Chagasin-Cathepsin B complex Deposited 2008-02-22 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–110（110 aa）
Not recorded PO4 PHOSPHATE ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；291 K；0.2 M ammonium dihydrogen phosphate, 20% PEG 3350, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 1.80 Å R-free 0.210
3CBJ Chagasin-Cathepsin B complex Deposited 2008-02-22 Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 1–110（110 aa）
Not recorded PO4 PHOSPHATE ION × 8 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；291 K；0.2 M ammonium dihydrogen phosphate, 20% PEG 3350, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 1.80 Å R-free 0.210
3CBK chagasin-cathepsin B Deposited 2008-02-22 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–110（110 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.2；291 K；0.14M ammonium fluoride, 14% PEG 3350, pH 6.2, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 2.67 Å R-free 0.242
3E1Z Crystal structure of the parasite protesase inhibitor chagasin in complex with papain Deposited 2008-08-05 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–110（110 aa）
Not recorded ZN ZINC ION × 1 FMT FORMIC ACID × 10 ACY ACETIC ACID × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；291 K；2.0M ammonium formate, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 1.86 Å R-free 0.208

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.