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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：P69891 New Search
3PDB entries
3Biological assembly
6chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification 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
1FDH STRUCTURE OF HUMAN FOETAL DEOXYHAEMOGLOBIN Deposited 1976-08-18 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain G 7–152（146 aa）
Chain H 7–152（146 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) HEM PROTOPORPHYRIN IX CONTAINING FE × 4 X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.50 Å
1I3D HUMAN CARBONMONOXY HEMOGLOBIN BART'S (GAMMA4) Deposited 2001-02-15 Assembly 1 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–146（146 aa）
Chain B 1–146（146 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 CMO CARBON MONOXIDE × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.9；291 K；acetic acid/KOH, MePEG 5000, pH 4.9, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 1.70 Å R-free 0.244
1I3E HUMAN AZIDO-MET HEMOGLOBIN BART'S (GAMMA4) Deposited 2001-02-15 Assembly 1 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–146（146 aa）
Chain B 1–146（146 aa）
Not recorded AZI AZIDE ION × 4 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；291 K；acetic acid/KOH, MePEG 5000, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 1.86 Å R-free 0.220

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.