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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：P03485 New Search
14PDB entries
18Biological assembly
68chain/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
1AA7 INFLUENZA VIRUS MATRIX PROTEIN CRYSTAL STRUCTURE AT PH 4.0 Deposited 1997-01-24 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–158（158 aa）
Chain B 1–158（158 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 4；20% PEG 3350, 50MM NAH2PO4, PH 4.0
Resolution 2.08 Å R-free 0.280
1EA3 Influenza virus M1 protein Deposited 2000-11-03 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–164（164 aa） Fragment：N-TERMINAL DOMAIN RESIDUES 1-164
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；0.1M HEPES PH7.5, 5% V/V ISOPROPANOL,6-10% PEG4000, pH 7.00
Resolution 2.30 Å R-free 0.313
1EA3 Influenza virus M1 protein Deposited 2000-11-03 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–164（164 aa） Fragment：N-TERMINAL DOMAIN RESIDUES 1-164
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；0.1M HEPES PH7.5, 5% V/V ISOPROPANOL,6-10% PEG4000, pH 7.00
Resolution 2.30 Å R-free 0.313
1HHI THE ANTIGENIC IDENTITY OF PEPTIDE(SLASH)MHC COMPLEXES: A COMPARISON OF THE CONFORMATION OF FIVE PEPTIDES PRESENTED BY HLA-A2 Deposited 1993-06-30 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain C 58–66（9 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.50 Å
1HHI THE ANTIGENIC IDENTITY OF PEPTIDE(SLASH)MHC COMPLEXES: A COMPARISON OF THE CONFORMATION OF FIVE PEPTIDES PRESENTED BY HLA-A2 Deposited 1993-06-30 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain F 58–66（9 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.50 Å
3VDX Structure of a 16 nm protein cage designed by fusing symmetric oligomeric domains Deposited 2012-01-06 Assembly 1 Insufficient information Homooligomer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain A 3–164（162 aa）
Chain B 3–164（162 aa）
Chain C 3–164（162 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 10.3；298 K；1.2M NaH2PO4, 0.8M K2HPO4, 0.1M CAPS, pH 10.3, vapor diffusion, hanging drop, temperature 298K
Resolution 3.00 Å R-free 0.281
4D9J Structure of a 16 nm protein cage designed by fusing symmetric oligomeric domains Deposited 2012-01-11 Assembly 1 Insufficient information Homooligomer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain A 3–164（162 aa）
Chain B 3–164（162 aa）
Chain C 3–164（162 aa）
Chain D 3–164（162 aa）
Chain E 3–164（162 aa）
Chain F 3–164（162 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 10.3；298 K；1.2M NaH2PO4, 0.8M K2HPO4, 0.1M CAPS, pH 10.3, vapor diffusion, hanging drop, temperature 298K
Resolution 3.92 Å R-free 0.294
4D9J Structure of a 16 nm protein cage designed by fusing symmetric oligomeric domains Deposited 2012-01-11 Assembly 2 Insufficient information Homooligomer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain G 3–164（162 aa）
Chain H 3–164（162 aa）
Chain I 3–164（162 aa）
Chain J 3–164（162 aa）
Chain K 3–164（162 aa）
Chain L 3–164（162 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 10.3；298 K；1.2M NaH2PO4, 0.8M K2HPO4, 0.1M CAPS, pH 10.3, vapor diffusion, hanging drop, temperature 298K
Resolution 3.92 Å R-free 0.294
4IQ4 Structure of a 16 nm protein cage designed by fusing symmetric oligomeric domains, triple mutant, P21212 form Deposited 2013-01-10 Assembly 1 Insufficient information Homooligomer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain A 3–165（163 aa）
Chain B 3–165（163 aa）
Chain C 3–165（163 aa）
Chain D 3–165（163 aa）
Chain E 3–165（163 aa）
Chain F 3–165（163 aa）
Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.4；298 K；0.1M Na Citrate pH 4.4, 10% PEG 3,000, vapor diffusion, hanging drop, temperature 298K
Resolution 3.50 Å R-free 0.231
4ITV Structure of a 16 nm protein cage designed by fusing symmetric oligomeric domains, triple mutant, P212121 form Deposited 2013-01-18 Assembly 1 Insufficient information Homooligomer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain A 3–164（162 aa）
Chain B 3–164（162 aa）
Chain C 3–164（162 aa）
Chain D 3–164（162 aa）
Chain E 3–164（162 aa）
Chain F 3–164（162 aa）
Chain G 3–164（162 aa）
Chain H 3–164（162 aa）
Chain I 3–164（162 aa）
Chain J 3–164（162 aa）
Chain K 3–164（162 aa）
Chain L 3–164（162 aa）
Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.4；298 K；0.1M Na Citrate pH 4.4, 10% PEG 3000, vapor diffusion, hanging drop, temperature 298K
Resolution 3.60 Å R-free 0.240
4IVJ Structure of a 16 nm protein cage designed by fusing symmetric oligomeric domains, triple mutant, I222 form Deposited 2013-01-23 Assembly 1 Insufficient information Homooligomer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain A 3–165（163 aa）
Chain B 3–165（163 aa）
Chain C 3–165（163 aa）
Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T Mutation：K118A, L279Q, Q24T No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.4；298 K；0.1M Na Citrate pH 4.4, 10% PEG 3000, vapor diffusion, hanging drop, temperature 298K
Resolution 7.35 Å R-free 0.288
4QES Structure of a 16 nm protein cage designed by fusing symmetric oligomeric domains, quadruple mutant, I222 form Deposited 2014-05-18 Assembly 1 Insufficient information Homooligomer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain A 3–164（162 aa） Fragment：SEE REMARK 999
Chain B 3–164（162 aa） Fragment：SEE REMARK 999
Chain C 3–164（162 aa） Fragment：SEE REMARK 999
Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.4；298 K；0.1 M sodium citrate, pH 4.4, 11% PEG3000, 200 mM sodium chloride, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 4.19 Å R-free 0.295
4QF0 Structure of a 16 nm protein cage designed by fusing symmetric oligomeric domains, quadruple mutant, P21212 form Deposited 2014-05-19 Assembly 1 Insufficient information Homooligomer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain A 3–164（162 aa） Fragment：SEE REMARK 999
Chain B 3–164（162 aa） Fragment：SEE REMARK 999
Chain C 3–164（162 aa） Fragment：SEE REMARK 999
Chain D 3–164（162 aa） Fragment：SEE REMARK 999
Chain E 3–164（162 aa） Fragment：SEE REMARK 999
Chain F 3–164（162 aa） Fragment：SEE REMARK 999
Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；298 K；0.1 M Tris, pH 7.0, 10% PEG8000, 0.2 M magnesium chloride, 3% trehalose, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 6.49 Å R-free 0.324
4QFF Structure of a 16 nm protein cage designed by fusing symmetric oligomeric domains, quadruple mutant, P212121 form Deposited 2014-05-20 Assembly 1 Insufficient information Homooligomer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count
Chain A 3–164（162 aa） Fragment：SEE REMARK 999
Chain B 3–164（162 aa） Fragment：SEE REMARK 999
Chain C 3–164（162 aa） Fragment：SEE REMARK 999
Chain D 3–164（162 aa） Fragment：SEE REMARK 999
Chain E 3–164（162 aa） Fragment：SEE REMARK 999
Chain F 3–164（162 aa） Fragment：SEE REMARK 999
Chain G 3–164（162 aa） Fragment：SEE REMARK 999
Chain H 3–164（162 aa） Fragment：SEE REMARK 999
Chain I 3–164（162 aa） Fragment：SEE REMARK 999
Chain J 3–164（162 aa） Fragment：SEE REMARK 999
Chain K 3–164（162 aa） Fragment：SEE REMARK 999
Chain L 3–164（162 aa） Fragment：SEE REMARK 999
Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A Mutation：K118A, L279Q, Q24T, Y51A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.8；298 K；0.1 M sodium/potassium phosphate, pH 5.8, 10% PEG8000, 0.2 M sodium chloride, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Resolution 7.81 Å R-free 0.339
5CQE 2.1 Angstrom resolution crystal structure of matrix protein 1 (M1; residues 1-164) from Influenza A virus (A/Puerto Rico/8/34(H1N1)) Deposited 2015-07-21 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–164（164 aa）
Chain B 1–164（164 aa）
Not recorded CL CHLORIDE ION × 3 TRS 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL × 1 EDO 1,2-ETHANEDIOL × 1 PEG DI(HYDROXYETHYL)ETHER × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；295 K；Protein: 12.8 mg/mL 10 mM Tris-HCl pH 8.3 500 mM NaCl 0.5 mM TCEP Crsytallization: The JCSG+ Suite (B9: 100 mM Citric acid pH 4.0 20% (w/v) PEG 6000; final pH 5.0 Cryocondition: Crystallization condition + sucrose (50%)
Resolution 2.10 Å R-free 0.197
5EUO PF6-M1-HLA-A2 Deposited 2015-11-18 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain J 58–66（9 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；PEG3350, Imidazole
Resolution 2.10 Å R-free 0.281
5EUO PF6-M1-HLA-A2 Deposited 2015-11-18 Assembly 2 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain I 58–66（9 aa）
Not recorded IMD IMIDAZOLE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；PEG3350, Imidazole
Resolution 2.10 Å R-free 0.281
6Z5L Helical reconstruction of influenza A virus M1 in complex with nucleic acid. Deposited 2020-05-26 Assembly 1 Protein homooligomer Homooligomer；Protein × 80 PDB declaration: 80-meric（80） Consistent with protein count
Chain A 1–252（252 aa）
Mutation：R134K No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 10
cryo-EM vitrification conditions Cryogen ETHANE；sample was applied 3 times each with 30s adsorption time
Resolution 3.80 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.