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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：C6K2K4 New Search
9PDB entries
9Biological assembly
12chain/assembly records
Main Difference Dimensions in This Set
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
7F56 DNQX-bound GluK2-1xNeto2 complex, with asymmetric LBD Deposited 2021-06-21 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain E 1–525（525 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 16 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
7F57 Kainate-bound GluK2-1xNeto2 complex, at the desensitized state Deposited 2021-06-21 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain E 1–525（525 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 11 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
7F59 DNQX-bound GluK2-1xNeto2 complex Deposited 2021-06-21 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain E 1–525（525 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 7 PGT (1S)-2-{[{[(2R)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL STEARATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
7F5A DNQX-bound GluK2-2xNeto2 complex Deposited 2021-06-21 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain E 1–525（525 aa）
Chain F 1–525（525 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 10 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 6.40 Å
7F5B LBD-TMD focused reconstruction of DNQX-bound GluK2-1xNeto2 complex Deposited 2021-06-21 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain E 1–525（525 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 CA CALCIUM ION × 1 PGT (1S)-2-{[{[(2R)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL STEARATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.90 Å
9N4P Composite map for GluK2-1xNeto2 in the apo state Deposited 2025-02-03 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain E 1–525（525 aa）
Not recorded POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 15 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 14 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.58 Å
9N4Q Composite map for GluK2-2xNeto2 in the apo state Deposited 2025-02-03 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain E 1–525（525 aa）
Chain F 1–525（525 aa）
Not recorded POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 15 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 15 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.48 Å
9N4S Composite map for GluK2-1xNeto2 in the open state, in complex with the positive allosteric modulator BPAM344 and agonist kainate Deposited 2025-02-03 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain E 1–525（525 aa）
Not recorded KAI 3-(CARBOXYMETHYL)-4-ISOPROPENYLPROLINE × 4 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 17 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 19 2J9 4-cyclopropyl-7-fluoro-3,4-dihydro-2H-1,2,4-benzothiadiazine 1,1-dioxide × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.34 Å
9N4T Composite map for GluK2-2xNeto2 in the open state, in complex with the positive allosteric modulator BPAM344 and agonist kainate Deposited 2025-02-03 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain E 1–525（525 aa）
Chain F 1–525（525 aa）
Not recorded 2J9 4-cyclopropyl-7-fluoro-3,4-dihydro-2H-1,2,4-benzothiadiazine 1,1-dioxide × 4 KAI 3-(CARBOXYMETHYL)-4-ISOPROPENYLPROLINE × 4 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 18 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 20 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.22 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.