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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：P0A910 New Search
8PDB entries
14Biological assembly
24chain/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
1BXW OUTER MEMBRANE PROTEIN A (OMPA) TRANSMEMBRANE DOMAIN Deposited 1998-10-03 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 21–192（172 aa） Fragment：TRANSMEMBRANE DOMAIN
Mutation：F23L, Q34K, K107Y C8E (HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 5；10 % PEG-8000 10 % MPD 0.05 M POTASSIUM PHOSPHATE PH 5.0
Resolution 2.50 Å R-free 0.235
1G90 NMR Solution Structure of Outer Membrane Protein A Transmembrane Domain: 10 conformers Deposited 2000-11-21 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 22–197（176 aa） Fragment：TRANSMEMBRANE DOMAIN, RESIDUES 1-176
Mutation：W15F, W57F, W102F, W103F. No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.3；323 K；Ionic strength (raw mmCIF value) 0.050；Pressure ambient
NMR sample composition 1mM OmpA(0-176) U-15N,13C,2H; 600 mM D38-DPC; 10 mM phosphate buffer; pH 6.3; 50 mM NaCl | 95% H2O/5% D2O
Resolution not provided
2GE4 High-resolution solution structure of outer membrane protein A transmembrane domain Deposited 2006-03-17 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 22–197（176 aa） Fragment：transmembrane domain
Mutation：W15F, W57F, W102F, W143F No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6.3；223 K；Ionic strength (raw mmCIF value) 50mM NaCl；Pressure ambient
NMR sample composition 1mM OmpA U-2H,13C,15N; 500mM DPC; 10mM phosphate buffer; pH 6.3; 50mM NaCl | 90% H2O/10% D2O
Resolution not provided
2JMM NMR solution structure of a minimal transmembrane beta-barrel platform protein Deposited 2006-11-20 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 43–197（155 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 6；303 K；Ionic strength (raw mmCIF value) 20；Pressure ambient
NMR sample composition 1 mM [U-100% 13C; U-100% 15N; 80% 2H] BBP+EF, 95% H2O/5% D2O | 95% H2O/5% D2O
Resolution not provided
3NB3 The host outer membrane proteins OmpA and OmpC are packed at specific sites in the Shigella phage Sf6 virion as structural components Deposited 2010-06-02 Assembly 1 Protein heterocomplex Heteromer；Protein × 240 PDB declaration: 240-MERIC（240） Consistent with protein count
Chain A 1–346（346 aa） Fragment：outer membrane protein A
Chain B 1–346（346 aa） Fragment：outer membrane protein A
Chain C 1–346（346 aa） Fragment：outer membrane protein A
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 10 mM Tris-HCl, pH 7.4, 10 mM MgCl2；pH 7.4；10 mM Tris-HCl, pH 7.4, 10 mM MgCl2
cryo-EM vitrification conditions Cryogen ETHANE；Vitrification was carried out with a standard cryoEM method. The sample of 4 microlitres was applied to a holey EM grid, blotted for 3-4 seconds with a Whatman #2 filter paper, and plunged into ethane slush incubated in liquid nitrogen. The grid was stored in liquid nitrogen.
Resolution 19.00 Å
3NB3 The host outer membrane proteins OmpA and OmpC are packed at specific sites in the Shigella phage Sf6 virion as structural components Deposited 2010-06-02 Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–346（346 aa） Fragment：outer membrane protein A
Chain B 1–346（346 aa） Fragment：outer membrane protein A
Chain C 1–346（346 aa） Fragment：outer membrane protein A
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 10 mM Tris-HCl, pH 7.4, 10 mM MgCl2；pH 7.4；10 mM Tris-HCl, pH 7.4, 10 mM MgCl2
cryo-EM vitrification conditions Cryogen ETHANE；Vitrification was carried out with a standard cryoEM method. The sample of 4 microlitres was applied to a holey EM grid, blotted for 3-4 seconds with a Whatman #2 filter paper, and plunged into ethane slush incubated in liquid nitrogen. The grid was stored in liquid nitrogen.
Resolution 19.00 Å
3NB3 The host outer membrane proteins OmpA and OmpC are packed at specific sites in the Shigella phage Sf6 virion as structural components Deposited 2010-06-02 Assembly 3 Protein heterocomplex Heteromer；Protein × 20 PDB declaration: eicosameric（20） Consistent with protein count
Chain A 1–346（346 aa） Fragment：outer membrane protein A
Chain B 1–346（346 aa） Fragment：outer membrane protein A
Chain C 1–346（346 aa） Fragment：outer membrane protein A
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 10 mM Tris-HCl, pH 7.4, 10 mM MgCl2；pH 7.4；10 mM Tris-HCl, pH 7.4, 10 mM MgCl2
cryo-EM vitrification conditions Cryogen ETHANE；Vitrification was carried out with a standard cryoEM method. The sample of 4 microlitres was applied to a holey EM grid, blotted for 3-4 seconds with a Whatman #2 filter paper, and plunged into ethane slush incubated in liquid nitrogen. The grid was stored in liquid nitrogen.
Resolution 19.00 Å
3NB3 The host outer membrane proteins OmpA and OmpC are packed at specific sites in the Shigella phage Sf6 virion as structural components Deposited 2010-06-02 Assembly 4 Protein heterocomplex Heteromer；Protein × 24 PDB declaration: 24-meric（24） Consistent with protein count
Chain A 1–346（346 aa） Fragment：outer membrane protein A
Chain B 1–346（346 aa） Fragment：outer membrane protein A
Chain C 1–346（346 aa） Fragment：outer membrane protein A
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 10 mM Tris-HCl, pH 7.4, 10 mM MgCl2；pH 7.4；10 mM Tris-HCl, pH 7.4, 10 mM MgCl2
cryo-EM vitrification conditions Cryogen ETHANE；Vitrification was carried out with a standard cryoEM method. The sample of 4 microlitres was applied to a holey EM grid, blotted for 3-4 seconds with a Whatman #2 filter paper, and plunged into ethane slush incubated in liquid nitrogen. The grid was stored in liquid nitrogen.
Resolution 19.00 Å
3NB3 The host outer membrane proteins OmpA and OmpC are packed at specific sites in the Shigella phage Sf6 virion as structural components Deposited 2010-06-02 Assembly 5 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–346（346 aa） Fragment：outer membrane protein A
Chain B 1–346（346 aa） Fragment：outer membrane protein A
Chain C 1–346（346 aa） Fragment：outer membrane protein A
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer 10 mM Tris-HCl, pH 7.4, 10 mM MgCl2；pH 7.4；10 mM Tris-HCl, pH 7.4, 10 mM MgCl2
cryo-EM vitrification conditions Cryogen ETHANE；Vitrification was carried out with a standard cryoEM method. The sample of 4 microlitres was applied to a holey EM grid, blotted for 3-4 seconds with a Whatman #2 filter paper, and plunged into ethane slush incubated in liquid nitrogen. The grid was stored in liquid nitrogen.
Resolution 19.00 Å
5M2Q Structure of cobinamide-bound BtuF mutant W66F, the periplasmic vitamin B12 binding protein in E.coli Deposited 2016-10-13 Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–22（22 aa）
Mutation：W66F CBY COB(II)INAMIDE × 1 CYN CYANIDE ION × 1 GOL GLYCEROL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293.15 K；PEG3350 HEPES pH 7 Tryptone
Resolution 1.70 Å R-free 0.249
5M2Q Structure of cobinamide-bound BtuF mutant W66F, the periplasmic vitamin B12 binding protein in E.coli Deposited 2016-10-13 Assembly 2 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–22（22 aa）
Mutation：W66F CBY COB(II)INAMIDE × 1 CYN CYANIDE ION × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293.15 K；PEG3350 HEPES pH 7 Tryptone
Resolution 1.70 Å R-free 0.249
6LYR Structure of the BAM complex Deposited 2020-02-15 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain P 180–188（9 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；289 K；27-30% PEG 400, 100mM NaCl
Resolution 3.28 Å R-free 0.280
9FZC Structure of OmpA-short in complex with nanobody Nb01 Deposited 2024-07-05 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 22–191（170 aa）
Not recorded OCT N-OCTANE × 6 CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；293 K；0.1 M sodium acetate pH 5.5, 0.2 M calcium acetate, 25 % PEG MME 2K
Resolution 2.27 Å R-free 0.234
9FZC Structure of OmpA-short in complex with nanobody Nb01 Deposited 2024-07-05 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 22–191（170 aa）
Not recorded OCT N-OCTANE × 11 CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；293 K；0.1 M sodium acetate pH 5.5, 0.2 M calcium acetate, 25 % PEG MME 2K
Resolution 2.27 Å R-free 0.234

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.