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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：Q52V24 New Search
2PDB entries
3Biological assembly
3chain/assembly records
Main Difference Dimensions in This Set
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
2F91 1.2A resolution structure of a crayfish trypsin complexed with a peptide inhibitor, SGTI Deposited 2005-12-05 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–237（237 aa）
Not recorded CD CADMIUM ION × 6 CL CHLORIDE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；293 K；30% PEG 400, 0.1 M CD CHLORIDE, 0.1 M NA ACETATE, pH 4.60, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.20 Å R-free 0.182
4BNR Extremely stable complex of crayfish trypsin with bovine trypsin inhibitor Deposited 2013-05-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–237（237 aa）
Not recorded CA CALCIUM ION × 2 SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 5.6；293 K；10.6 MG/ML PROTEIN, 33 (W/V)% PEG 4000, 0.1 M SODIUM CITRATE PH 5.6, 0.2 M AMMONIUM ACETATE, 1:1 MIXING, 20 C
Resolution 2.00 Å R-free 0.182
4BNR Extremely stable complex of crayfish trypsin with bovine trypsin inhibitor Deposited 2013-05-17 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–237（237 aa）
Not recorded CA CALCIUM ION × 2 SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 5.6；293 K；10.6 MG/ML PROTEIN, 33 (W/V)% PEG 4000, 0.1 M SODIUM CITRATE PH 5.6, 0.2 M AMMONIUM ACETATE, 1:1 MIXING, 20 C
Resolution 2.00 Å R-free 0.182

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.