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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：Q16938 New Search
2PDB entries
2Biological assembly
2chain/assembly records
Main Difference Dimensions in This Set
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
1COU ANTICOAGULANT PROTEIN FROM THE NEMATODE ANCYLOSTOMA CANINUM Deposited 1999-05-28 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 8–91（84 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 4.5；298 K；Ionic strength (raw mmCIF value) 0.05 M；Pressure 1
NMR sample composition 0.050 M NACL, 0.000020 M DSS AND EITHER 95% H2O/5% D2O OR 99.99% D2O
Resolution not provided
2H9E Crystal Structure of FXa/selectide/NAPC2 ternary complex Deposited 2006-06-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain C 8–91（84 aa）
Not recorded PO4 PHOSPHATE ION × 6 ACT ACETATE ION × 3 NA SODIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.6；293 K；peg 8000, potassium dihydrogen phosphate, acetate ion, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.20 Å R-free 0.268

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.