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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：P12940 New Search
3PDB entries
4Biological assembly
4chain/assembly records
Main Difference Dimensions in This Set
Different construct 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
1C2A CRYSTAL STRUCTURE OF BARLEY BBI Deposited 1999-07-23 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 4–122（119 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.23；296 K；PEG 3000, SODIUM CITRATE, pH 6.23, VAPOR DIFFUSION, HANGING DROP, temperature 296.0K
Resolution 1.90 Å R-free 0.219
1TX6 trypsin:BBI complex Deposited 2004-07-02 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain I 1–125（125 aa）
Not recorded CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.59；291 K；PEG 8000, sodium citrate, DTT, pH 5.59, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 2.20 Å R-free 0.274
1TX6 trypsin:BBI complex Deposited 2004-07-02 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain J 1–125（125 aa）
Not recorded CA CALCIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.59；291 K；PEG 8000, sodium citrate, DTT, pH 5.59, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 2.20 Å R-free 0.274
2FJ8 High resolution structure of barley Bowman-Birk inhibitor Deposited 2006-01-02 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–124（124 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.64；295 K；PEG3000, pH 5.64, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Resolution 1.19 Å R-free 0.244

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.