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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：A0A1V1IGJ9 New Search
5PDB entries
9Biological assembly
9chain/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
7O00 Crystal structure of HLA-DR4 in complex with a HSP70 peptide Deposited 2021-03-25 Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain BBB 31–219（189 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions EVAPORATION；290 K；0.03 M of each divalent cation (12.5% (w/v) PEG 1000, 12.5% (w/v) PEG 3350, 12.5% (v/v) MPD), 0.1 M MOPS/HEPES-Na pH 7.5
Resolution 2.24 Å R-free 0.242
7YXB MHC-II dynamics are maintained in HLA-DR allotypes to ensure catalyzed peptide exchange Deposited 2022-02-15 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 31–227（197 aa）
Not recorded EDO 1,2-ETHANEDIOL × 9 FLC CITRATE ANION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；20% PEG 3350, 0.2M Ammoniumcitrate
Resolution 2.10 Å R-free 0.222
7YXB MHC-II dynamics are maintained in HLA-DR allotypes to ensure catalyzed peptide exchange Deposited 2022-02-15 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain D 31–227（197 aa）
Not recorded EDO 1,2-ETHANEDIOL × 7 FLC CITRATE ANION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；20% PEG 3350, 0.2M Ammoniumcitrate
Resolution 2.10 Å R-free 0.222
8EUQ Crystal structure of HLA-DRA*01:01/HLA-DRB1*04:01 in complex with c44H10 Fab Deposited 2022-10-19 Assembly 1 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 30–219（190 aa）
Mutation：A3G, C4A in the hemagglutinin peptide that was used SO4 SULFATE ION × 10 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293.15 K；1.7 M ammonium sulfate, 15% glycerol, 0.085 M HEPES, 1.7% PEG400, with crystal seeds previously grown in 2 M ammonium sulfate, 0.1 M bis-tris pH 5.5
Resolution 3.09 Å R-free 0.244
8EUQ Crystal structure of HLA-DRA*01:01/HLA-DRB1*04:01 in complex with c44H10 Fab Deposited 2022-10-19 Assembly 2 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain G 30–219（190 aa）
Mutation：A3G, C4A in the hemagglutinin peptide that was used SO4 SULFATE ION × 6 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293.15 K；1.7 M ammonium sulfate, 15% glycerol, 0.085 M HEPES, 1.7% PEG400, with crystal seeds previously grown in 2 M ammonium sulfate, 0.1 M bis-tris pH 5.5
Resolution 3.09 Å R-free 0.244
9NIG PB TCR in complex with HLA-DR4 presenting citrullinated Tenascin C peptide Deposited 2025-02-26 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain B 31–220（190 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.1 M Tris pH7.5, 0.3M NaCl, 0.05 M Glutamic acid, 0.05M Arginine, 20% PEG3350
Resolution 3.20 Å R-free 0.260
9NIG PB TCR in complex with HLA-DR4 presenting citrullinated Tenascin C peptide Deposited 2025-02-26 Assembly 2 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain D 31–220（190 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 EDO 1,2-ETHANEDIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.1 M Tris pH7.5, 0.3M NaCl, 0.05 M Glutamic acid, 0.05M Arginine, 20% PEG3350
Resolution 3.20 Å R-free 0.260
9NIG PB TCR in complex with HLA-DR4 presenting citrullinated Tenascin C peptide Deposited 2025-02-26 Assembly 3 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain I 31–220（190 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.1 M Tris pH7.5, 0.3M NaCl, 0.05 M Glutamic acid, 0.05M Arginine, 20% PEG3350
Resolution 3.20 Å R-free 0.260
9NIH Crystal structure of HLA-DR4 presenting citrullinated Tenascin C peptide Deposited 2025-02-26 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 30–219（190 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 GOL GLYCEROL × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；293 K；0.2 M NaCl, 0.1 M Bis Tris pH 5.5, 29% PEG3350
Resolution 2.40 Å R-free 0.219

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.