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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：Q63273 New Search
9PDB entries
17Biological assembly
25chain/assembly records
Main Difference Dimensions in This Set
Different construct 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
3OM0 Crystal structure of the GluK5 (KA2) ATD crystallographic dimer at 1.4 Angstrom resolution Deposited 2010-08-26 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 20–406（387 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 8 GOL GLYCEROL × 6 ACT ACETATE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 9.5；293 K；0.1 M CHES, 20% PEG 6K, pH 9.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.40 Å R-free 0.196
3OM1 Crystal structure of the GluK5 (KA2) ATD dimer at 1.7 Angstrom Resolution Deposited 2010-08-26 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 20–406（387 aa）
Chain B 20–406（387 aa）
Not recorded GOL GLYCEROL × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 8 NA SODIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.8；293 K；0.1 M BICINE, 20% PEG 8K, pH 8.8, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.68 Å R-free 0.196
3QLU Crystal structure of the GluK2/GluK5 (GluR6/KA2) ATD dimer assembly Deposited 2011-02-03 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 20–406（387 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 8 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.2；293 K；0.15 M Ammonium Sulfate; 0.1 M Tris; 18% PEG 4K, pH 8.20, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.91 Å R-free 0.256
3QLU Crystal structure of the GluK2/GluK5 (GluR6/KA2) ATD dimer assembly Deposited 2011-02-03 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 20–406（387 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 8 CL CHLORIDE ION × 1 GOL GLYCEROL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.2；293 K；0.15 M Ammonium Sulfate; 0.1 M Tris; 18% PEG 4K, pH 8.20, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.91 Å R-free 0.256
3QLV Crystal structure of the GluK2/GluK5 (GluR6/KA2) ATD tetramer assembly Deposited 2011-02-03 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 20–406（387 aa）
Chain B 20–406（387 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；293 K；10% Ethylene Glycol, 0.1 M HEPES, 5% PEG 8K, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 3.94 Å R-free 0.280
3QLV Crystal structure of the GluK2/GluK5 (GluR6/KA2) ATD tetramer assembly Deposited 2011-02-03 Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain E 20–406（387 aa）
Chain G 20–406（387 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；293 K；10% Ethylene Glycol, 0.1 M HEPES, 5% PEG 8K, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 3.94 Å R-free 0.280
3QLV Crystal structure of the GluK2/GluK5 (GluR6/KA2) ATD tetramer assembly Deposited 2011-02-03 Assembly 3 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain I 20–406（387 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；293 K；10% Ethylene Glycol, 0.1 M HEPES, 5% PEG 8K, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 3.94 Å R-free 0.280
3QLV Crystal structure of the GluK2/GluK5 (GluR6/KA2) ATD tetramer assembly Deposited 2011-02-03 Assembly 4 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 20–406（387 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；293 K；10% Ethylene Glycol, 0.1 M HEPES, 5% PEG 8K, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 3.94 Å R-free 0.280
3QLV Crystal structure of the GluK2/GluK5 (GluR6/KA2) ATD tetramer assembly Deposited 2011-02-03 Assembly 5 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 20–406（387 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；293 K；10% Ethylene Glycol, 0.1 M HEPES, 5% PEG 8K, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 3.94 Å R-free 0.280
3QLV Crystal structure of the GluK2/GluK5 (GluR6/KA2) ATD tetramer assembly Deposited 2011-02-03 Assembly 6 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain E 20–406（387 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；293 K；10% Ethylene Glycol, 0.1 M HEPES, 5% PEG 8K, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 3.94 Å R-free 0.280
3QLV Crystal structure of the GluK2/GluK5 (GluR6/KA2) ATD tetramer assembly Deposited 2011-02-03 Assembly 7 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain G 20–406（387 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；293 K；10% Ethylene Glycol, 0.1 M HEPES, 5% PEG 8K, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 3.94 Å R-free 0.280
3QLV Crystal structure of the GluK2/GluK5 (GluR6/KA2) ATD tetramer assembly Deposited 2011-02-03 Assembly 8 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain I 20–406（387 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；293 K；10% Ethylene Glycol, 0.1 M HEPES, 5% PEG 8K, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 3.94 Å R-free 0.280
7KS0 GluK2/K5 with 6-Cyano-7-nitroquinoxaline-2,3-dione (CNQX) Deposited 2020-11-20 Assembly 1 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–827（827 aa）
Chain C 1–827（827 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 5.30 Å
7KS3 GluK2/K5 with L-Glu Deposited 2020-11-20 Assembly 1 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–827（827 aa）
Chain C 1–827（827 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 5.80 Å
9OSF The intact LBD state of GluK2/K5 with 5-iodowillardiine and kynurenic acid sodium salt Deposited 2025-05-24 Assembly 1 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–827（827 aa）
Chain C 1–827（827 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8；20 mM Tris, 300 mM NaCl, 0.35 mM DDM, pH 8.0
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.83 Å
9OSG The partially ruptured LBD state of GluK2/K5 with 5-iodowillardiine and kynurenic acid sodium salt Deposited 2025-05-24 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–827（827 aa）
Chain C 1–827（827 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.83 Å
9OSI The intact LBD state of GluK2/K5 with alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) Deposited 2025-05-24 Assembly 1 Insufficient information Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–827（827 aa）
Chain C 1–827（827 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8；20 mM Tris, 300 mM NaCl, 0.35 mM DDM, pH 8.0
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.95 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.