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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：Q9TQB0 New Search
6PDB entries
7Biological assembly
7chain/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
1SYV HLA-B*4405 complexed to the dominant self ligand EEFGRAYGF Deposited 2004-04-02 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain C 77–85（9 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.8；295 K；PEG 4000, SODIUM CITRATE, AMMONIUM ACETATE, pH 5.8, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Resolution 1.70 Å R-free 0.224
7TUC Crystal structure of HLA-B*44:05 (T73C) with 9mer EEFGRAFSF Deposited 2022-02-02 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain P 36–44（9 aa） Fragment：EEFGRAFSF
Not recorded GOL GLYCEROL × 2 EDO 1,2-ETHANEDIOL × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；291 K；16% PEG 3350, 0.1M Tris, 0.2M Ca Acetate
Resolution 1.25 Å R-free 0.195
8TQ5 Crystal structure of Fab DX17 in complex with MHC-I (HLA-B*44:05) Deposited 2023-08-06 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain P 36–44（9 aa） Fragment：HLA-DPA1*02:01 derived peptide 77-85 (UNP residues 36-44)
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；291 K；12% PEG20000, 0.1 M MES, pH 6.5
Resolution 2.30 Å R-free 0.234
8TQ6 Crystal structure of Fab.B1.23.2 in complex with MHC-I (HLA-B*44:05) Deposited 2023-08-06 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain P 36–44（9 aa） Fragment：HLA-DPA1*02:01 derived peptide 77-85 (UNP residues 36-44)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.8；291 K；16% PEG3350, 0.04 M sodium citrate, 0.06 M Bis-Tris, pH 8.8
Resolution 3.20 Å R-free 0.268
8TQ6 Crystal structure of Fab.B1.23.2 in complex with MHC-I (HLA-B*44:05) Deposited 2023-08-06 Assembly 2 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain E 36–44（9 aa） Fragment：HLA-DPA1*02:01 derived peptide 77-85 (UNP residues 36-44)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.8；291 K；16% PEG3350, 0.04 M sodium citrate, 0.06 M Bis-Tris, pH 8.8
Resolution 3.20 Å R-free 0.268
9D73 CryoEM structure of anti-MHC-I mAb B1.23.2 complex with HLA-B44:05 Deposited 2024-08-16 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain P 36–44（9 aa） Fragment：HLA-DPA1*02:01 derived peptide 77-85 (UNP residues 36-44)
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.02 Å
9D74 CryoEM structure of anti-MHC-I Fab B1.23.2 complex with HLA-B44:05 Deposited 2024-08-16 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain P 36–44（9 aa） Fragment：HLA-DPA1*02:01 derived peptide 77-85 (UNP residues 36-44)
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.31 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.