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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：Q6NIZ1 New Search
2PDB entries
14Biological assembly
14chain/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
8SMU Integral fusion of the HtaA CR2 domain from Corynebacterium diphtheriae within EGFP Deposited 2023-04-26 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 344–507（164 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) HEM PROTOPORPHYRIN IX CONTAINING FE × 1 GOL GLYCEROL × 7 1PE PENTAETHYLENE GLYCOL × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.4；298 K；1.9 M ammonium sulfate, 0.1 M sodium cacodylate trihydrate, 0.2 M sodium chloride
Resolution 2.45 Å R-free 0.233
8SMU Integral fusion of the HtaA CR2 domain from Corynebacterium diphtheriae within EGFP Deposited 2023-04-26 Assembly 2 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 344–507（164 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) HEM PROTOPORPHYRIN IX CONTAINING FE × 1 GOL GLYCEROL × 4 1PE PENTAETHYLENE GLYCOL × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.4；298 K；1.9 M ammonium sulfate, 0.1 M sodium cacodylate trihydrate, 0.2 M sodium chloride
Resolution 2.45 Å R-free 0.233
8SMU Integral fusion of the HtaA CR2 domain from Corynebacterium diphtheriae within EGFP Deposited 2023-04-26 Assembly 3 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain C 344–507（164 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) HEM PROTOPORPHYRIN IX CONTAINING FE × 1 GOL GLYCEROL × 7 1PE PENTAETHYLENE GLYCOL × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.4；298 K；1.9 M ammonium sulfate, 0.1 M sodium cacodylate trihydrate, 0.2 M sodium chloride
Resolution 2.45 Å R-free 0.233
8SMU Integral fusion of the HtaA CR2 domain from Corynebacterium diphtheriae within EGFP Deposited 2023-04-26 Assembly 4 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain D 344–507（164 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) HEM PROTOPORPHYRIN IX CONTAINING FE × 1 GOL GLYCEROL × 5 1PE PENTAETHYLENE GLYCOL × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.4；298 K；1.9 M ammonium sulfate, 0.1 M sodium cacodylate trihydrate, 0.2 M sodium chloride
Resolution 2.45 Å R-free 0.233
9O0J HtaA CR1 domain from Corynebacterium diphtheriae Deposited 2025-04-02 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 37–214（178 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 PEG DI(HYDROXYETHYL)ETHER × 1 EDO 1,2-ETHANEDIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；298 K；0.2 M lithium sulfate, 0.1 M sodium acetate pH 4.5, 50% PEG 400
Resolution 1.88 Å R-free 0.248
9O0J HtaA CR1 domain from Corynebacterium diphtheriae Deposited 2025-04-02 Assembly 10 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain J 37–214（178 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；298 K；0.2 M lithium sulfate, 0.1 M sodium acetate pH 4.5, 50% PEG 400
Resolution 1.88 Å R-free 0.248
9O0J HtaA CR1 domain from Corynebacterium diphtheriae Deposited 2025-04-02 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 37–214（178 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；298 K；0.2 M lithium sulfate, 0.1 M sodium acetate pH 4.5, 50% PEG 400
Resolution 1.88 Å R-free 0.248
9O0J HtaA CR1 domain from Corynebacterium diphtheriae Deposited 2025-04-02 Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain C 37–214（178 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；298 K；0.2 M lithium sulfate, 0.1 M sodium acetate pH 4.5, 50% PEG 400
Resolution 1.88 Å R-free 0.248
9O0J HtaA CR1 domain from Corynebacterium diphtheriae Deposited 2025-04-02 Assembly 4 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain D 37–214（178 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 EDO 1,2-ETHANEDIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；298 K；0.2 M lithium sulfate, 0.1 M sodium acetate pH 4.5, 50% PEG 400
Resolution 1.88 Å R-free 0.248
9O0J HtaA CR1 domain from Corynebacterium diphtheriae Deposited 2025-04-02 Assembly 5 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain E 37–214（178 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；298 K；0.2 M lithium sulfate, 0.1 M sodium acetate pH 4.5, 50% PEG 400
Resolution 1.88 Å R-free 0.248
9O0J HtaA CR1 domain from Corynebacterium diphtheriae Deposited 2025-04-02 Assembly 6 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain F 37–214（178 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 PEG DI(HYDROXYETHYL)ETHER × 1 EDO 1,2-ETHANEDIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；298 K；0.2 M lithium sulfate, 0.1 M sodium acetate pH 4.5, 50% PEG 400
Resolution 1.88 Å R-free 0.248
9O0J HtaA CR1 domain from Corynebacterium diphtheriae Deposited 2025-04-02 Assembly 7 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain G 37–214（178 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；298 K；0.2 M lithium sulfate, 0.1 M sodium acetate pH 4.5, 50% PEG 400
Resolution 1.88 Å R-free 0.248
9O0J HtaA CR1 domain from Corynebacterium diphtheriae Deposited 2025-04-02 Assembly 8 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain H 37–214（178 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；298 K；0.2 M lithium sulfate, 0.1 M sodium acetate pH 4.5, 50% PEG 400
Resolution 1.88 Å R-free 0.248
9O0J HtaA CR1 domain from Corynebacterium diphtheriae Deposited 2025-04-02 Assembly 9 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain I 37–214（178 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 EDO 1,2-ETHANEDIOL × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；298 K；0.2 M lithium sulfate, 0.1 M sodium acetate pH 4.5, 50% PEG 400
Resolution 1.88 Å R-free 0.248

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.