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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：P04419 New Search
2PDB entries
3Biological assembly
3chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification 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
2YSU Structure of the complex between BtuB and Colicin E2 receptor binding domain Deposited 2007-04-04 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 313–447（135 aa） Fragment：R-DOMAIN(RESIDUES 313-447)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 3.50 Å R-free 0.315
3U43 Crystal structure of the colicin E2 DNase-Im2 complex Deposited 2011-10-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 449–581（133 aa） Fragment：DNase domain (UNP residues 449-581)
Not recorded ZN ZINC ION × 1 CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；293 K；0.1M MMT, 27% PEG1500, pH 7.0, vapor diffusion, sitting drop, temperature 293K
Resolution 1.72 Å R-free 0.203
3U43 Crystal structure of the colicin E2 DNase-Im2 complex Deposited 2011-10-07 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 449–581（133 aa） Fragment：DNase domain (UNP residues 449-581)
Not recorded ZN ZINC ION × 1 CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；293 K；0.1M MMT, 27% PEG1500, pH 7.0, vapor diffusion, sitting drop, temperature 293K
Resolution 1.72 Å R-free 0.203

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.