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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：P0A672 New Search
6PDB entries
11Biological assembly
35chain/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
1B1B IRON DEPENDENT REGULATOR Deposited 1998-11-19 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–140（140 aa）
Not recorded ZN ZINC ION × 2 SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.5；pH 7.50
Resolution 2.60 Å R-free 0.360
1FX7 CRYSTAL STRUCTURE OF THE IRON-DEPENDENT REGULATOR (IDER) FROM MYCOBACTERIUM TUBERCULOSIS Deposited 2000-09-25 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–230（230 aa）
Chain B 1–230（230 aa）
Not recorded SO4 SULFATE ION × 11 CO COBALT (II) ION × 6 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.6；293 K；2.0 M lithium sulfate 0.01 M magnesium chloride 0.1 M MES buffer ~0.1 mM 21 bp duplex DNA oligomer, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 20K
Resolution 2.00 Å R-free 0.272
1FX7 CRYSTAL STRUCTURE OF THE IRON-DEPENDENT REGULATOR (IDER) FROM MYCOBACTERIUM TUBERCULOSIS Deposited 2000-09-25 Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 1–230（230 aa）
Chain D 1–230（230 aa）
Not recorded SO4 SULFATE ION × 6 CO COBALT (II) ION × 7 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.6；293 K；2.0 M lithium sulfate 0.01 M magnesium chloride 0.1 M MES buffer ~0.1 mM 21 bp duplex DNA oligomer, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 20K
Resolution 2.00 Å R-free 0.272
1FX7 CRYSTAL STRUCTURE OF THE IRON-DEPENDENT REGULATOR (IDER) FROM MYCOBACTERIUM TUBERCULOSIS Deposited 2000-09-25 Assembly 3 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–230（230 aa）
Chain B 1–230（230 aa）
Chain C 1–230（230 aa）
Chain D 1–230（230 aa）
Not recorded SO4 SULFATE ION × 17 CO COBALT (II) ION × 13 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.6；293 K；2.0 M lithium sulfate 0.01 M magnesium chloride 0.1 M MES buffer ~0.1 mM 21 bp duplex DNA oligomer, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 20K
Resolution 2.00 Å R-free 0.272
1FX7 CRYSTAL STRUCTURE OF THE IRON-DEPENDENT REGULATOR (IDER) FROM MYCOBACTERIUM TUBERCULOSIS Deposited 2000-09-25 Assembly 4 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–230（230 aa）
Chain B 1–230（230 aa）
Chain C 1–230（230 aa）
Chain D 1–230（230 aa）
Not recorded SO4 SULFATE ION × 17 CO COBALT (II) ION × 13 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.6；293 K；2.0 M lithium sulfate 0.01 M magnesium chloride 0.1 M MES buffer ~0.1 mM 21 bp duplex DNA oligomer, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 20K
Resolution 2.00 Å R-free 0.272
1FX7 CRYSTAL STRUCTURE OF THE IRON-DEPENDENT REGULATOR (IDER) FROM MYCOBACTERIUM TUBERCULOSIS Deposited 2000-09-25 Assembly 5 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–230（230 aa）
Chain B 1–230（230 aa）
Chain C 1–230（230 aa）
Chain D 1–230（230 aa）
Not recorded SO4 SULFATE ION × 17 CO COBALT (II) ION × 13 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.6；293 K；2.0 M lithium sulfate 0.01 M magnesium chloride 0.1 M MES buffer ~0.1 mM 21 bp duplex DNA oligomer, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 20K
Resolution 2.00 Å R-free 0.272
1U8R Crystal Structure of an IdeR-DNA Complex Reveals a Conformational Change in Activated IdeR for Base-specific Interactions Deposited 2004-08-06 Assembly 1 Protein–DNA Homooligomer；Protein × 4 PDB declaration: hexameric（6） Consistent with all polymers
Chain A 1–230（230 aa）
Chain B 1–230（230 aa）
Chain C 1–230（230 aa）
Chain D 1–230（230 aa）
Not recorded CO COBALT (II) ION × 12 NA SODIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；293 K；7% w/v PEG 8000, 0.2 M calcium acetate, 0.1 M imidazole, 0.01 M cobalt chloride, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.75 Å R-free 0.265
1U8R Crystal Structure of an IdeR-DNA Complex Reveals a Conformational Change in Activated IdeR for Base-specific Interactions Deposited 2004-08-06 Assembly 2 Protein–DNA Homooligomer；Protein × 4 PDB declaration: hexameric（6） Consistent with all polymers
Chain G 1–230（230 aa）
Chain H 1–230（230 aa）
Chain I 1–230（230 aa）
Chain J 1–230（230 aa）
Not recorded CO COBALT (II) ION × 12 NA SODIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；293 K；7% w/v PEG 8000, 0.2 M calcium acetate, 0.1 M imidazole, 0.01 M cobalt chloride, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.75 Å R-free 0.265
2ISY Crystal structure of the nickel-activated two-domain iron-dependent regulator (IdeR) Deposited 2006-10-18 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–140（140 aa）
Chain B 1–140（140 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) NI NICKEL (II) ION × 4 PO4 PHOSPHATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.2；298 K；0.6 M Na/K phosphate pH 8.2, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 1.96 Å R-free 0.211
2ISZ Crystal structure of a two-domain IdeR-DNA complex crystal form I Deposited 2006-10-18 Assembly 1 Protein–DNA Homooligomer；Protein × 4 PDB declaration: hexameric（6） Consistent with all polymers
Chain A 1–140（140 aa）
Chain B 1–140（140 aa）
Chain C 1–140（140 aa）
Chain D 1–140（140 aa）
Not recorded NI NICKEL (II) ION × 12 NA SODIUM ION × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.5；298 K；28% PEG 3350, 0.2 M ammonium acetate, 0.1 M Bis-Tris pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.40 Å R-free 0.239
2IT0 Crystal structure of a two-domain IdeR-DNA complex crystal form II Deposited 2006-10-18 Assembly 1 Protein–DNA Homooligomer；Protein × 4 PDB declaration: hexameric（6） Consistent with all polymers
Chain A 1–140（140 aa）
Chain B 1–140（140 aa）
Chain C 1–140（140 aa）
Chain D 1–140（140 aa）
Not recorded NI NICKEL (II) ION × 12 ACT ACETATE ION × 10 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；298 K；26% PEG 4000, 0.2 M sodium acetate, 0.1 M Tris HCl pH 8.5, 5% glycerol, VAPOR DIFFUSION, SITTING DROP, temperature 298K
Resolution 2.60 Å R-free 0.273

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.