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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：P01911 New Search
10PDB entries
18Biological assembly
20chain/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
2WBJ TCR complex Deposited 2009-03-02 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 30–227（198 aa） Fragment：MHC CLASS II, RESIDUES 29-227
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 SO4 SULFATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions pH 6.3；0.2 M LISO4, 0.8 M K2HPO4, 1.2 M NAH2PO4, 0.1 M CAPS PH 10.5, 8 % 1,1,1,3,3, 3-HEXAFLUORO-2-PROPANOL
Resolution 3.00 Å R-free 0.288
2WBJ TCR complex Deposited 2009-03-02 Assembly 2 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain F 30–227（198 aa） Fragment：MHC CLASS II, RESIDUES 29-227
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 6.3；0.2 M LISO4, 0.8 M K2HPO4, 1.2 M NAH2PO4, 0.1 M CAPS PH 10.5, 8 % 1,1,1,3,3, 3-HEXAFLUORO-2-PROPANOL
Resolution 3.00 Å R-free 0.288
5V4M Structure of HLA-DR15 with bound alpha3(135-145) peptide Deposited 2017-03-10 Assembly 1 Other combination Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain F 29–219（191 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293.15 K；25% PEG 3350, 0.2M KNO3 and 0.1M Bis-Tris-propane (pH 7.5)
Resolution 2.10 Å R-free 0.244
5V4M Structure of HLA-DR15 with bound alpha3(135-145) peptide Deposited 2017-03-10 Assembly 2 Other combination Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 29–219（191 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293.15 K；25% PEG 3350, 0.2M KNO3 and 0.1M Bis-Tris-propane (pH 7.5)
Resolution 2.10 Å R-free 0.244
5V4M Structure of HLA-DR15 with bound alpha3(135-145) peptide Deposited 2017-03-10 Assembly 3 Other combination Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain I 29–219（191 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293.15 K；25% PEG 3350, 0.2M KNO3 and 0.1M Bis-Tris-propane (pH 7.5)
Resolution 2.10 Å R-free 0.244
5V4M Structure of HLA-DR15 with bound alpha3(135-145) peptide Deposited 2017-03-10 Assembly 4 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain L 29–219（191 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293.15 K；25% PEG 3350, 0.2M KNO3 and 0.1M Bis-Tris-propane (pH 7.5)
Resolution 2.10 Å R-free 0.244
8PJE Human Leukocyte Antigen class II allotype DR1 presenting influenza A virus haemagglutinin (HA)306-318 PKYVKQNTLKLAT Deposited 2023-06-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 30–219（190 aa）
Not recorded EPE 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID × 1 EDO 1,2-ETHANEDIOL × 13 GOL GLYCEROL × 8 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；291 K；0.1 M HEPES pH 7.0, 25 % PEG8000, 15 % Glycerol
Resolution 1.70 Å R-free 0.203
8PJE Human Leukocyte Antigen class II allotype DR1 presenting influenza A virus haemagglutinin (HA)306-318 PKYVKQNTLKLAT Deposited 2023-06-23 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain E 30–219（190 aa）
Not recorded EPE 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID × 1 EDO 1,2-ETHANEDIOL × 14 GOL GLYCEROL × 3 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；291 K；0.1 M HEPES pH 7.0, 25 % PEG8000, 15 % Glycerol
Resolution 1.70 Å R-free 0.203
8PJF Human Leukocyte Antigen class II allotype DR1 presenting P11T->R modified influenza A virus haemagglutinin (HA)306-318 PKYVKQNTLKLAR Deposited 2023-06-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 30–219（190 aa）
Not recorded SO4 SULFATE ION × 6 EDO 1,2-ETHANEDIOL × 16 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；291 K；0.1 M MES pH 7.0, 25 % PEG4000, 0.2 M ammonium sulphate
Resolution 1.48 Å R-free 0.192
8PJG F11 TCR in complex with Human Leukocyte Antigen class II allotype DR1 presenting P11T->R modified influenza A virus haemagglutinin (HA)306-318 PKYVKQNTLKLAR Deposited 2023-06-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain B 30–219（190 aa）
Not recorded EDO 1,2-ETHANEDIOL × 15 P4G 1-ETHOXY-2-(2-ETHOXYETHOXY)ETHANE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；291 K；0.1 M Sodium cacodylate pH 6.5, 15 % PEG8000, 0.2 M ammonium sulphate
Resolution 1.83 Å R-free 0.214
8TBP HLA-DRB1*15:01 in complex with smith antigen Deposited 2023-06-29 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 × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；289.15 K；0.2M Disodium Malon 20% w/v PEG 3350
Resolution 3.13 Å R-free 0.253
8TBP HLA-DRB1*15:01 in complex with smith antigen Deposited 2023-06-29 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain D 30–219（190 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；289.15 K；0.2M Disodium Malon 20% w/v PEG 3350
Resolution 3.13 Å R-free 0.253
8TRL T cell recognition of citrullinated alpha-enolase peptide presented by HLA-DR4 Deposited 2023-08-09 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain B 30–219（190 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 ACT ACETATE ION × 2 FMT FORMIC ACID × 3 GOL GLYCEROL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；4-10% Tacsimate, 18-23% w/v PEG3350
Resolution 2.40 Å R-free 0.234
8TRL T cell recognition of citrullinated alpha-enolase peptide presented by HLA-DR4 Deposited 2023-08-09 Assembly 2 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain E 30–219（190 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 ACT ACETATE ION × 1 FMT FORMIC ACID × 1 GOL GLYCEROL × 9 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；4-10% Tacsimate, 18-23% w/v PEG3350
Resolution 2.40 Å R-free 0.234
8TRQ T cell recognition of citrullinated vimentin peptide presented by HLA-DR4 Deposited 2023-08-10 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain B 30–219（190 aa）
Not recorded GOL GLYCEROL × 10 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；20% w/v PEG3350, 0.2 M di-sodium malonate, 0.1 M Bis-Tris propane, pH 6.5, tri-glycine additive
Resolution 2.75 Å R-free 0.264
8TRR T cell recognition of citrullinated vimentin peptide presented by HLA-DR4 Deposited 2023-08-10 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain B 30–219（190 aa）
Not recorded GOL GLYCEROL × 7 SO4 SULFATE ION × 6 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；20% w/v PEG8000, 0.1 M Tris, pH 8.5, 0.2 M ammonium sulfate
Resolution 2.65 Å R-free 0.244
8TRR T cell recognition of citrullinated vimentin peptide presented by HLA-DR4 Deposited 2023-08-10 Assembly 2 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain G 30–219（190 aa）
Not recorded GOL GLYCEROL × 3 SO4 SULFATE ION × 10 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；20% w/v PEG8000, 0.1 M Tris, pH 8.5, 0.2 M ammonium sulfate
Resolution 2.65 Å R-free 0.244
8VRW Cryo-EM structure of human invariant chain in complex with HLA-DR15 Deposited 2024-01-22 Assembly 1 Protein heterocomplex Heteromer；Protein × 9 PDB declaration: nonameric（9） Consistent with protein count
Chain B 1–266（266 aa）
Chain E 1–266（266 aa）
Chain H 1–266（266 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.03 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.