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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：P01075 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 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
1H20 Solution structure of the potato carboxypeptidase inhibitor Deposited 2002-07-29 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–39（39 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 4；308 K；Pressure 1
Resolution not provided
4CPA REFINED CRYSTAL STRUCTURE OF THE POTATO INHIBITOR COMPLEX OF CARBOXYPEPTIDASE A AT 2.5 ANGSTROMS RESOLUTION Deposited 1982-03-24 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain I 3–38（36 aa）
Not recorded GLY GLYCINE × 1 ZN ZINC ION × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.50 Å
4CPA REFINED CRYSTAL STRUCTURE OF THE POTATO INHIBITOR COMPLEX OF CARBOXYPEPTIDASE A AT 2.5 ANGSTROMS RESOLUTION Deposited 1982-03-24 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain J 3–38（36 aa）
Not recorded GLY GLYCINE × 1 ZN ZINC ION × 1 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.50 Å
7EQZ Crystal structure of Carboxypeptidase B complexed with Potato Carboxypeptidase Inhibitor Deposited 2021-05-05 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain I 3–38（36 aa）
Not recorded ZN ZINC ION × 1 GLY GLYCINE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；298 K；1.6M Ammonium sulfate, 0.1M Sodium HEPES pH 7.5, 0.1M Sodium chloride
Resolution 2.20 Å R-free 0.196

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.