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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：Q8NX66 New Search
4PDB entries
4Biological assembly
6chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification 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
2MOQ Solution Structure and Molecular determinants of Hemoglobin Binding of the first NEAT Domain of IsdB in Staphylococcus aureus Deposited 2014-04-29 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 125–272（148 aa） Fragment：NEAT 1 domain, UNP residues 125-272
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.8；298 K；Ionic strength (raw mmCIF value) 0.45；Pressure ambient
NMR sample composition 1 mM [U-99% 15N] IsdB N1, 50 mM sodium phosphate, 400 mM sodium chloride, 0.1 mM PMSF, 1 mM EDTA, 0.01 % sodium azide, 5 % [U-99% 2H] D2O, 95 % H2O, 95% H2O/5% D2O | 95% H2O/5% D2O
NMR sample composition 1 mM [U-99% 13C; U-99% 15N] IsdB N1, 50 mM sodium phosphate, 400 mM sodium chloride, 0.1 mM PMSF, 1 mM EDTA, 0.01 % sodium azide, 5 % [U-99% 2H] D2O, 95 % H2O, 95% H2O/5% D2O | 95% H2O/5% D2O
NMR sample composition 1 mM [U-99% 13C; U-99% 15N] IsdB N1, 50 mM sodium phosphate, 400 mM sodium chloride, 0.1 mM PMSF, 1 mM EDTA, 0.01 % sodium azide, 100 % [U-99% 2H] D2O, 100% D2O | 100% D2O
Resolution not provided
7PCF Human methemoglobin bound to Staphylococcus aureus hemophore IsdB Deposited 2021-08-03 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain E 125–485（361 aa）
Chain F 125–485（361 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.2；CHAPSO was added immediately before plunge freezing to overcome preferred orientation of the particles in the vitreous ice.
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 5.82 Å
7PCH Human carboxyhemoglobin bound to Staphylococcus aureus hemophore IsdB - 1:2 complex Deposited 2021-08-03 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain E 125–485（361 aa）
Chain F 125–485（361 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.2；CHAPSO was added immediately before plunge freezing to overcome preferred orientation of the particles in the vitreous ice.
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.89 Å
7PCQ Human carboxyhemoglobin bound to Staphylococcus aureus hemophore IsdB - 1:1 complex Deposited 2021-08-03 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain E 125–485（361 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.2；CHAPSO was added immediately before plunge freezing to overcome preferred orientation of the particles in the vitreous ice.
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.62 Å

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.