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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：Q03708 New Search
14PDB entries
17Biological assembly
23chain/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
1AYI COLICIN E7 IMMUNITY PROTEIN IM7 Deposited 1997-11-04 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–87（87 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.2；USING THE HANGING DROP METHOD, PROTEIN (10MG/ML) WAS CRYSTALLISED BY MIXING AN EQUAL VOLUME OF PROTEIN WITH A SOLUTION CONTAINING 55% SATURATED DI-AMMONIUM PHOSPHATE AND 200MM TRIS PH7.2. THE DROP WAS EQUILIBRATED AGAINST A WELL CONTAINING 100% SATURATED DI-AMMONIUM PHOSPHATE AT ROOM TEMPERATURE., vapor diffusion - hanging drop
Resolution 2.00 Å R-free 0.247
1CEI STRUCTURE DETERMINATION OF THE COLICIN E7 IMMUNITY PROTEIN (IMME7) THAT BINDS SPECIFICALLY TO THE DNASE-TYPE COLICIN E7 AND INHIBITS ITS BACTERIOCIDAL ACTIVITY Deposited 1996-03-19 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–87（87 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；pH 8.
Resolution 1.80 Å
1MZ8 CRYSTAL STRUCTURES OF THE NUCLEASE DOMAIN OF COLE7/IM7 IN COMPLEX WITH A PHOSPHATE ION AND A ZINC ION Deposited 2002-10-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–87（87 aa）
Not recorded ZN ZINC ION × 1 PO4 PHOSPHATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.3；298 K；PEG4000, sodium phosphate, ammonium acetate, pH 6.3, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.00 Å R-free 0.230
1MZ8 CRYSTAL STRUCTURES OF THE NUCLEASE DOMAIN OF COLE7/IM7 IN COMPLEX WITH A PHOSPHATE ION AND A ZINC ION Deposited 2002-10-07 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 1–87（87 aa）
Not recorded ZN ZINC ION × 1 PO4 PHOSPHATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.3；298 K；PEG4000, sodium phosphate, ammonium acetate, pH 6.3, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.00 Å R-free 0.230
1UJZ Crystal structure of the E7_C/Im7_C complex; a computationally designed interface between the colicin E7 DNase and the Im7 Immunity protein Deposited 2003-08-13 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–87（87 aa）
Mutation：D35Y, No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；298 K；PEGMME 2000, ammonium sulfate, Sodium Acetate, Glycerol, DMSO, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.10 Å R-free 0.270
1UNK STRUCTURE OF COLICIN E7 IMMUNITY PROTEIN Deposited 1996-06-21 Assembly 1 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–87（87 aa）
Chain B 1–87（87 aa）
Chain C 1–87（87 aa）
Chain D 1–87（87 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 1.80 Å R-free 0.251
1ZNV How a His-metal finger endonuclease ColE7 binds and cleaves DNA with a transition metal ion cofactor Deposited 2005-05-12 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–87（87 aa）
Not recorded NI NICKEL (II) ION × 1 PO4 PHOSPHATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.7；298 K；0.3M phosphate buffer, 50mM NaCl, 20% PEG550 MME, 10% glycerol, pH 5.7, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.00 Å R-free 0.235
1ZNV How a His-metal finger endonuclease ColE7 binds and cleaves DNA with a transition metal ion cofactor Deposited 2005-05-12 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 1–87（87 aa）
Not recorded NI NICKEL (II) ION × 1 PO4 PHOSPHATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.7；298 K；0.3M phosphate buffer, 50mM NaCl, 20% PEG550 MME, 10% glycerol, pH 5.7, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.00 Å R-free 0.235
2ERH Crystal Structure of the E7_G/Im7_G complex; a designed interface between the colicin E7 DNAse and the Im7 immunity protein Deposited 2005-10-24 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–87（87 aa）
Mutation：D35Y, T51Q No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.6；298 K；30% PEG 4K, 0.6M ammonium acetate, 50mM Na acetate, 25% glycerol, 5% DMSO, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 2.00 Å R-free 0.271
2JAZ CRYSTAL STRUCTURE OF THE MUTANT N560D OF THE NUCLEASE DOMAIN OF COLE7 IN COMPLEX WITH IM7 Deposited 2006-12-01 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain A 1–87（87 aa）
Chain C 1–87（87 aa）
Not recorded ZN ZINC ION × 4 PO4 PHOSPHATE ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；20 % W/V PEG3350 AND 0.1 M DI-AMMONIUM HYDROGEN CITRATE, pH 7.00
Resolution 2.03 Å R-free 0.249
2JB0 CRYSTAL STRUCTURE OF THE MUTANT H573A OF THE NUCLEASE DOMAIN OF COLE7 IN COMPLEX WITH IM7 Deposited 2006-12-01 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain A 1–87（87 aa）
Not recorded ZN ZINC ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；20 % W/V PEG3350 AND 0.2 M DI-AMMONIUM HYDROGEN CITRATE, pH 7.00
Resolution 1.91 Å R-free 0.250
2JBG crystal structure of the mutant N560A of the nuclease domain of ColE7 in complex with Im7 Deposited 2006-12-07 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain A 1–87（87 aa）
Chain C 1–87（87 aa）
Not recorded ZN ZINC ION × 4 SO4 SULFATE ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions pH 4.6；20 % W/V POLYETHYLENE GLYCOL MONOMETHYL ETHER 2000, 0.2 M AMMONIUM SULFATE, AND 0.1 M SODIUM ACETATE TRIHYDRATE AT PH 4.6
Resolution 2.20 Å R-free 0.249
2K0D NMR structure of a mutant colicin e7 immunity protein im7 with an extended helix III Deposited 2008-02-01 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain X 2–51（50 aa）
Chain X 65–87（23 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions 298 K；Ionic strength (raw mmCIF value) 50；Pressure ambient
NMR measurement conditions 298 K；Ionic strength (raw mmCIF value) 50；Pressure ambient
NMR measurement conditions 298 K；Ionic strength (raw mmCIF value) 50；Pressure ambient
NMR sample composition 1 mM [U-99% 13C; U-99% 15N] potassium phosphate, 90% H2O/10% D2O | 90% H2O/10% D2O
NMR sample composition 1 mM [U-99% 15N] potassium phosphate, 90% H2O/10% D2O | 90% H2O/10% D2O
NMR sample composition 1 mM [U-99% 13C; U-99% 15N] potassium phosphate, 100% D2O | 100% D2O
Resolution not provided
4F37 Structure of the tethered N-terminus of Alzheimer's disease A peptide Deposited 2012-05-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 2–87（86 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；293 K；0.2M Sodium malonate, 20% (w/v) PEG 3350, 0.1M Bis-tris propane pH 8.5, 0.2M 1-methylimidazolium formate, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.57 Å R-free 0.269
4F37 Structure of the tethered N-terminus of Alzheimer's disease A peptide Deposited 2012-05-09 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 2–87（86 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 8.5；293 K；0.2M Sodium malonate, 20% (w/v) PEG 3350, 0.1M Bis-tris propane pH 8.5, 0.2M 1-methylimidazolium formate, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Resolution 2.57 Å R-free 0.269
5WNW Chaperone Spy bound to Im7 6-45 ensemble Deposited 2017-08-01 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain C 6–45（40 aa） Fragment：UNP residues 6-45
Not recorded IMD IMIDAZOLE × 3 ZN ZINC ION × 8 CL CHLORIDE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 8；293 K；PEG 3000, imidazole, zinc acetate
Resolution 1.79 Å R-free 0.238
7CEI THE ENDONUCLEASE DOMAIN OF COLICIN E7 IN COMPLEX WITH ITS INHIBITOR IM7 PROTEIN Deposited 1998-09-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–87（87 aa）
Not recorded ZN ZINC ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 6；15 MG/ML PROTEIN COMPLEX, 5 MM NA CITRATE, 0.25 M NH4 ACETATE, 10% PEG4000, PH 6.0 VAPOR DIFFUSION AGAINST 22.5% PEG4000
Resolution 2.30 Å R-free 0.270

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.