9nr9

The structure of GluA1/A4 LBD-TMD with 2 TARPs

Method: ELECTRON MICROSCOPY D_max: 142.6 Å Quality: GOOD

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1. Protein Identity and Related Structures Protein Identity & Related Structures

Voltage-dependent calcium channel gamma-2 subunit

OrganismNot specified

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein heterocomplex Heteromer Protein × 6 PDB declaration: hexameric（6） Consistent with protein copy count	Chain F； UniProt 5–208 Chain H； UniProt 5–208	Not recorded	Glutamate receptor 1 × 2 （P19490） Isoform 2 of Glutamate receptor 4 × 2 （P19493） ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4	ELECTRON MICROSCOPY cryo-EM buffer：pH 8 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 4.22 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 9NR9	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
5KK2 Architecture of fully occupied GluA2 AMPA receptor - TARP complex elucidated by single particle cryo-electron microscopy Deposited 2016-06-20	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 1–323（323 aa） Chain F 1–323（323 aa） Chain G 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 7.30 Å
5VOT Structure of AMPA receptor-TARP complex Deposited 2017-05-03	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 1–323（323 aa） Chain F 1–323（323 aa） Chain G 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.90 Å
5VOU Structure of AMPA receptor-TARP complex Deposited 2017-05-03	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 1–323（323 aa） Chain F 1–323（323 aa） Chain G 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 6.40 Å
5VOV Structure of AMPA receptor-TARP complex Deposited 2017-05-03	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 1–323（323 aa） Chain F 1–323（323 aa） Chain G 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 7.70 Å
6NJL Architecture and subunit arrangement of native AMPA receptors Deposited 2019-01-03	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 14 PDB declaration: tetradecameric	Chain F 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 6.70 Å
6NJM Architecture and subunit arrangement of native AMPA receptors Deposited 2019-01-03	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 16 PDB declaration: hexadecameric	Chain F 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 6.50 Å
6NJN Architecture and subunit arrangement of native AMPA receptors Deposited 2019-01-03	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 15 PDB declaration: pentadecameric	Chain F 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 6.50 Å
8C1R Resting state homomeric GluA2 F231A mutant AMPA receptor in complex with TARP gamma-2 Deposited 2022-12-21	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 2–323（322 aa） Chain F 2–323（322 aa） Chain G 2–323（322 aa） Chain H 2–323（322 aa）	Not recorded	ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4 PLM PALMITIC ACID × 7 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 5	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.20 Å
8C1S Transmembrane domain of resting state homomeric GluA2 F231A mutant AMPA receptor in complex with TARP gamma 2 Deposited 2022-12-21	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 2–323（322 aa） Chain F 2–323（322 aa） Chain G 2–323（322 aa） Chain H 2–323（322 aa）	Not recorded	PLM PALMITIC ACID × 6 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.00 Å
8P3Q Homomeric GluA2 flip R/G-unedited Q/R-edited F231A mutant in tandem with TARP gamma-2, desensitized conformation 3 Deposited 2023-05-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 1–323（323 aa） Chain F 1–323（323 aa） Chain G 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	PLM PALMITIC ACID × 7 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 5	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.95 Å
8P3S Homomeric GluA2 flip R/G-unedited Q/R-edited F231A mutant in tandem with TARP gamma-2, desensitized conformation 2 Deposited 2023-05-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 1–323（323 aa） Chain F 1–323（323 aa） Chain G 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	PLM PALMITIC ACID × 7 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 5	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.95 Å
8P3X Homomeric GluA2 flip R/G-edited Q/R-edited F231A mutant in tandem with TARP gamma-2, desensitized conformation 1 Deposited 2023-05-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 1–323（323 aa） Chain F 1–323（323 aa） Chain G 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.36 Å
8P3Y Homomeric GluA2 flip R/G-edited Q/R-edited F231A mutant in tandem with TARP gamma-2, desensitized conformation 3 Deposited 2023-05-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 1–323（323 aa） Chain F 1–323（323 aa） Chain G 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.55 Å
8P3Z Homomeric GluA2 flip R/G-edited Q/R-edited F231A mutant in tandem with TARP gamma-2, desensitized conformation 2 Deposited 2023-05-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 1–323（323 aa） Chain F 1–323（323 aa） Chain G 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.46 Å
8PIV Homomeric GluA2 flip R/G-unedited Q/R-edited F231A mutant in tandem with TARP gamma-2, desensitized conformation 1 Deposited 2023-06-22	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 1–323（323 aa） Chain F 1–323（323 aa） Chain G 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	PLM PALMITIC ACID × 7 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 5	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.46 Å
9E9D Structure of full length AMPA receptor GluA2 and auxiliary subunit TARP gamma-2 in complex with anti-miR 17 oligonucleotide RGLS4326 Deposited 2024-11-08	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Insufficient information Homooligomer；Protein × 4 PDB declaration: tetrameric	Chain A 2–208（207 aa） Chain B 2–208（207 aa） Chain C 2–208（207 aa） Chain D 2–208（207 aa）	Not recorded	A1BX3 O-{[(1S,3S,4R,6S,7R)-7-{[(R)-{[(1R,3R,4R,6S,7R)-3-(2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)-7-hydroxy-6-methyl-2,5-dioxabicyclo[2.2.1]heptan-1-yl]methoxy}(sulfanyl)phosphoryl]oxy}-3-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-6-methyl-2,5-dioxabicyclo[2.2.1]heptan-1-yl]methyl} O-[(2R,3S,4R,5S)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-4-methoxy-2-methyloxolan-3-yl] hydrogen (R)-phosphorothioate × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.24 Å
9E9E Structure of AMPA receptor GluA2 and auxiliary subunit TARP gamma-2 (LBD-TMD) in complex with anti-miR 17 oligonucleotide RGLS4326 Deposited 2024-11-08	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Insufficient information Homooligomer；Protein × 4 PDB declaration: tetrameric	Chain A 2–208（207 aa） Chain B 2–208（207 aa） Chain C 2–208（207 aa） Chain D 2–208（207 aa）	Mutation：N48D Mutation：N48D Mutation：N48D Mutation：N48D	A1BX3 O-{[(1S,3S,4R,6S,7R)-7-{[(R)-{[(1R,3R,4R,6S,7R)-3-(2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)-7-hydroxy-6-methyl-2,5-dioxabicyclo[2.2.1]heptan-1-yl]methoxy}(sulfanyl)phosphoryl]oxy}-3-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-6-methyl-2,5-dioxabicyclo[2.2.1]heptan-1-yl]methyl} O-[(2R,3S,4R,5S)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-4-methoxy-2-methyloxolan-3-yl] hydrogen (R)-phosphorothioate × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.24 Å
9HPC The TMD and the LBD region of the AMPAR complex GluA3- TARP gamma2 in the apo state. Deposited 2024-12-12	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Insufficient information Homooligomer；Protein × 8 PDB declaration: octameric	Chain A 2–323（322 aa） Chain B 2–323（322 aa） Chain C 2–323（322 aa） Chain D 2–323（322 aa） Chain W 2–323（322 aa） Chain X 2–323（322 aa） Chain Y 2–323（322 aa） Chain Z 2–323（322 aa）	Mutation：R439G Mutation：R439G Mutation：R439G Mutation：R439G Mutation：R439G Mutation：R439G Mutation：R439G Mutation：R439G	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.59 Å
9HPE The NTD dimer and the interfacing LBD region of the AMPAR complex GluA3- TARP gamma2 in the apo state Deposited 2024-12-12	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Insufficient information Homooligomer；Protein × 2 PDB declaration: dimeric	Chain B 2–323（322 aa） Chain C 2–323（322 aa）	Mutation：R439G Mutation：R439G	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.90 Å
9HPF The NTD dimer and the interfacing LBD region of the AMPAR complex GluA3- TARP gamma2 in the desensitised state. Deposited 2024-12-12	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Insufficient information Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 2–323（322 aa） Chain B 2–323（322 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.77 Å
9HPG The NTD dimer and the interfacing LBD region of the AMPAR complex GluA3(R439G,R163I)- TARP gamma2 in the apo state. Deposited 2024-12-12	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Insufficient information Homooligomer；Protein × 2 PDB declaration: dimeric	Chain B 2–323（322 aa） Chain C 2–323（322 aa）	Mutation：R439G,R163I Mutation：R439G,R163I	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.35 Å
9HPK Open state TMD-LBD of the GluA3(R439G) with TARP gamma2 Deposited 2024-12-13	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Insufficient information Homooligomer；Protein × 8 PDB declaration: octameric	Chain A 2–323（322 aa） Chain B 2–323（322 aa） Chain C 2–323（322 aa） Chain D 2–323（322 aa） Chain W 2–323（322 aa） Chain X 2–323（322 aa） Chain Y 2–323（322 aa） Chain Z 2–323（322 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.59 Å
9NR7 The structure of GluA1/A4 LBD-TMD in Noelin-AMPAR complex Deposited 2025-03-14	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain F 5–208（204 aa） Chain H 5–208（204 aa）	Not recorded	ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.18 Å
9NRA The structure of GluA1/A4 LBD-TMD with 4 auxiliary subunits Deposited 2025-03-14	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain F 5–208（204 aa） Chain H 5–208（204 aa）	Not recorded	ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.18 Å
9QDN GluA4 in complex with TARP-2, resting state I, structure of TMD/LBD Deposited 2025-03-06	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 1–323（323 aa） Chain F 1–323（323 aa） Chain G 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	PLM PALMITIC ACID × 16 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4 E2Q 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.71 Å
9QFH The composite map of of the AMPAR complex GluA3- TARP gamma2 in the apo state. Deposited 2025-03-11	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Insufficient information Homooligomer；Protein × 8 PDB declaration: octameric	Chain A 2–323（322 aa） Chain B 2–323（322 aa） Chain C 2–323（322 aa） Chain D 2–323（322 aa） Chain W 2–323（322 aa） Chain X 2–323（322 aa） Chain Y 2–323（322 aa） Chain Z 2–323（322 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.90 Å
9RMS GluA4 in complex with TARP-2, Resting II state, structure of TMD/LBD domains Deposited 2025-06-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 1–323（323 aa） Chain F 1–323（323 aa） Chain G 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	E2Q 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.80 Å
9RMW GluA4 in complex with TARP-2, open state, structure of TMD/LBD domains Deposited 2025-06-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 1–323（323 aa） Chain F 1–323（323 aa） Chain G 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	PLM PALMITIC ACID × 18 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 2 CYZ CYCLOTHIAZIDE × 4 GLU GLUTAMIC ACID × 4 CA CALCIUM ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.90 Å
9RN4 GluA4 in complex with TARP-2, desensitized state, structure of TMD/LBD domains Deposited 2025-06-19	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 1–323（323 aa） Chain F 1–323（323 aa） Chain G 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	PLM PALMITIC ACID × 4 CA CALCIUM ION × 1 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.40 Å
9RN7 GluA4 in complex with TARP-2, Desensitized state, structure of TMD domain Deposited 2025-06-19	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 1–323（323 aa） Chain F 1–323（323 aa） Chain G 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	PLM PALMITIC ACID × 4 CA CALCIUM ION × 1 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.10 Å
9RNH GluA4 in complex with TARP-2, Resting II state, structure of TMD domain Deposited 2025-06-19	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain E 1–323（323 aa） Chain F 1–323（323 aa） Chain G 1–323（323 aa） Chain H 1–323（323 aa）	Not recorded	PLM PALMITIC ACID × 2 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.10 Å

31 other PDB entries and 31 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	CCG2_RAT
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain F； PDBConstruct 1–204； UniProt 5–208 Author chain H； PDBConstruct 1–204； UniProt 5–208

Glutamate receptor 1

OrganismNot specified

UniProt P19490

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein heterocomplex Heteromer Protein × 6 PDB declaration: hexameric（6） Consistent with protein copy count	Chain A； UniProt 407–833 Chain C； UniProt 407–833	Not recorded	Voltage-dependent calcium channel gamma-2 subunit × 2 （Q71RJ2） Isoform 2 of Glutamate receptor 4 × 2 （P19493） ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4	ELECTRON MICROSCOPY cryo-EM buffer：pH 8 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 4.22 Å

Other States of the Same Protein in the Database

Other PDB	Difference from Current Entry 9NR9	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
3SAJ Crystal Structure of glutamate receptor GluA1 Amino Terminal Domain Deposited 2011-06-02	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 22–392（371 aa） Fragment：N-terminal domain (UNP residues 22-392) Chain C 22–392（371 aa） Fragment：N-terminal domain (UNP residues 22-392)	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1	X-RAY DIFFRACTION X-ray crystallization conditions EVAPORATION；pH 5；290 K；22% PEG3350, 0.2 M magnesium chloride, 0.1 M sodium acetate, pH 5.0, EVAPORATION, temperature 290K	Resolution 2.50 Å R-free 0.286
3SAJ Crystal Structure of glutamate receptor GluA1 Amino Terminal Domain Deposited 2011-06-02	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric	Chain B 22–392（371 aa） Fragment：N-terminal domain (UNP residues 22-392) Chain D 22–392（371 aa） Fragment：N-terminal domain (UNP residues 22-392)	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2	X-RAY DIFFRACTION X-ray crystallization conditions EVAPORATION；pH 5；290 K；22% PEG3350, 0.2 M magnesium chloride, 0.1 M sodium acetate, pH 5.0, EVAPORATION, temperature 290K	Resolution 2.50 Å R-free 0.286
6NJL Architecture and subunit arrangement of native AMPA receptors Deposited 2019-01-03	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 14 PDB declaration: tetradecameric	Chain A 1–907（907 aa） Chain C 1–907（907 aa）	Not recorded	ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 6.70 Å
6NJN Architecture and subunit arrangement of native AMPA receptors Deposited 2019-01-03	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 15 PDB declaration: pentadecameric	Chain A 1–907（907 aa）	Not recorded	ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 6.50 Å
6QKC GluA1/2 In complex with auxiliary subunit gamma-8 Deposited 2019-01-28	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain A 1–907（907 aa） Chain C 1–907（907 aa）	Not recorded	E2Q 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide × 4 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 12	ELECTRON MICROSCOPY cryo-EM buffer pH 8；25 mM TRIS, pH 8, 150 mM NaCl and 0.1 % digitonin (w/v) cryo-EM vitrification conditions Cryogen ETHANE；3uL on grid, 60 sec incubation and 4sec blotting time	Resolution 4.40 Å
6QKZ Full length GluA1/2-gamma8 complex Deposited 2019-01-30	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric	Chain A 20–907（888 aa） Chain C 20–907（888 aa）	Not recorded	E2Q 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide × 4 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8；25 mM TRIS, pH 8, 150 mM NaCl and 0.1 % digitonin (w/v) cryo-EM vitrification conditions Cryogen ETHANE；3uL on grid, 60 sec incubation and 4sec blotting time	Resolution 6.30 Å
7OCA Resting state full-length GluA1/A2 heterotertramer in complex with TARP gamma 8 and CNIH2 Deposited 2021-04-26	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric	Chain A 1–907（907 aa） Chain C 1–907（907 aa）	Not recorded	E2Q 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide × 4 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 46 CLR CHOLESTEROL × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.40 Å
7OCC NTD of resting state GluA1/A2 heterotertramer Deposited 2021-04-26	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 2 PDB declaration: dimeric	Chain A 1–907（907 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.40 Å
7OCC NTD of resting state GluA1/A2 heterotertramer Deposited 2021-04-26	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 2 Other combination Heteromer；Protein × 2 PDB declaration: dimeric	Chain C 1–907（907 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.40 Å
7OCD Resting state GluA1/A2 heterotetramer in complex with auxiliary subunit TARP gamma 8 (LBD-TMD) Deposited 2021-04-26	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain A 1–907（907 aa） Chain C 1–907（907 aa）	Not recorded	E2Q 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 6	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.50 Å
7OCE Resting state GluA1/A2 AMPA receptor in complex with TARP gamma 8 and CNIH2 (LBD-TMD) Deposited 2021-04-26	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 1–907（907 aa） Chain C 1–907（907 aa）	Not recorded	E2Q 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 46 CLR CHOLESTEROL × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.10 Å
7OCF Active state GluA1/A2 AMPA receptor in complex with TARP gamma 8 and CNIH2 (LBD-TMD) Deposited 2021-04-26	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 1–907（907 aa） Chain C 1–907（907 aa）	Not recorded	CYZ CYCLOTHIAZIDE × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 26 GLU GLUTAMIC ACID × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.60 Å
7QHB Active state of GluA1/2 in complex with TARP gamma 8, L-glutamate and CTZ Deposited 2021-12-11	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain A 1–907（907 aa） Chain C 1–907（907 aa）	Not recorded	PAM PALMITOLEIC ACID × 14 GLU GLUTAMIC ACID × 4 CYZ CYCLOTHIAZIDE × 4 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 2 79N (2S)-2,3-dihydroxypropyl (7Z)-hexadec-7-enoate × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8；25 mM TRIS 150 mM NaCl 0.02 % GDN 87 uM CTZ 100 mM L-Glu cryo-EM vitrification conditions Cryogen ETHANE；3-4 second blots	Resolution 3.50 Å
7QHH Desensitized state of GluA1/2 AMPA receptor in complex with TARP-gamma 8 (TMD-LBD) Deposited 2021-12-12	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain A 1–907（907 aa） Chain C 1–907（907 aa）	Not recorded	GLU GLUTAMIC ACID × 4 PAM PALMITOLEIC ACID × 10 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 2 79N (2S)-2,3-dihydroxypropyl (7Z)-hexadec-7-enoate × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8；25 mM TRIS 150 mM NaCl 0.02 % GDN 87 uM CTZ 100 mM L-Glu cryo-EM vitrification conditions Cryogen ETHANE；3-4 second blots	Resolution 3.60 Å
8AYL Resting state GluA1/A2 AMPA receptor in complex with TARP gamma 8 and ligand JNJ-61432059 Deposited 2022-09-02	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain A 1–907（907 aa） Chain C 1–907（907 aa）	Not recorded	ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4 PLM PALMITIC ACID × 8 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 6 OIJ 5-[2-(4-fluorophenyl)-7-(4-oxidanylpiperidin-1-yl)pyrazolo[1,5-c]pyrimidin-3-yl]-1,3-dihydroindol-2-one × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.20 Å
8AYM Resting state GluA1/A2 AMPA receptor in complex with TARP gamma 8 and ligand JNJ-55511118 Deposited 2022-09-02	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain A 1–907（907 aa） Chain C 1–907（907 aa）	Not recorded	XVD 6-[2-chloro-6-(trifluoromethoxy)phenyl]-1H-benzimidazol-2-ol × 2 PLM PALMITIC ACID × 14 ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 6 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.30 Å
8AYN Resting state GluA1/A2 AMPA receptor in complex with TARP gamma 8 and ligand LY3130481 Deposited 2022-09-02	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain A 1–907（907 aa） Chain C 1–907（907 aa）	Not recorded	ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4 PLM PALMITIC ACID × 14 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 4 OLR 6-[(1~{S})-1-[1-[5-(2-hydroxyethyloxy)pyridin-2-yl]pyrazol-3-yl]ethyl]-3~{H}-1,3-benzothiazol-2-one × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.80 Å
8AYO Open state GluA1/A2 AMPA receptor in complex with TARP gamma 8 and ligand JNJ-61432059 Deposited 2022-09-02	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric	Chain A 1–907（907 aa） Chain C 1–907（907 aa）	Not recorded	GLU GLUTAMIC ACID × 4 CYZ CYCLOTHIAZIDE × 4 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4 PLM PALMITIC ACID × 10 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 2 OIJ 5-[2-(4-fluorophenyl)-7-(4-oxidanylpiperidin-1-yl)pyrazolo[1,5-c]pyrimidin-3-yl]-1,3-dihydroindol-2-one × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.30 Å
8C1P Active state homomeric GluA1 AMPA receptor in complex with TARP gamma 3 Deposited 2022-12-21	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 1–907（907 aa） Chain B 1–907（907 aa） Chain C 1–907（907 aa） Chain D 1–907（907 aa）	Not recorded	CYZ CYCLOTHIAZIDE × 4 PLM PALMITIC ACID × 6 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4 GLU GLUTAMIC ACID × 4 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.90 Å
8C1Q Resting state homomeric GluA1 AMPA receptor in complex with TARP gamma 3 Deposited 2022-12-21	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 1–907（907 aa） Chain B 1–907（907 aa） Chain C 1–907（907 aa） Chain D 1–907（907 aa）	Not recorded	ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4 PLM PALMITIC ACID × 4 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 6	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.82 Å
8C2H Transmembrane domain of active state homomeric GluA1 AMPA receptor in tandem with TARP gamma 3 Deposited 2022-12-22	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 1–907（907 aa） Chain B 1–907（907 aa） Chain C 1–907（907 aa） Chain D 1–907（907 aa）	Not recorded	PLM PALMITIC ACID × 6 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.64 Å
8C2I Transmembrane domain of resting state homomeric GluA1 AMPA receptor in complex with TARP gamma 3 Deposited 2022-12-22	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 1–907（907 aa） Chain B 1–907（907 aa） Chain C 1–907（907 aa） Chain D 1–907（907 aa）	Not recorded	PLM PALMITIC ACID × 4 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 8	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.70 Å
8P3T Homomeric GluA1 in tandem with TARP gamma-3, desensitized conformation 1 Deposited 2023-05-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 1–907（907 aa） Chain B 1–907（907 aa） Chain C 1–907（907 aa） Chain D 1–907（907 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.39 Å
8P3U Homomeric GluA1 in tandem with TARP gamma-3, desensitized conformation 2 Deposited 2023-05-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 1–907（907 aa） Chain B 1–907（907 aa） Chain C 1–907（907 aa） Chain D 1–907（907 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.77 Å
8P3V Homomeric GluA1 in tandem with TARP gamma-3, desensitized conformation 3 Deposited 2023-05-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 1–907（907 aa） Chain B 1–907（907 aa） Chain C 1–907（907 aa） Chain D 1–907（907 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.53 Å
8P3W Homomeric GluA1 in tandem with TARP gamma-3, desensitized conformation 4 Deposited 2023-05-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 1–907（907 aa） Chain B 1–907（907 aa） Chain C 1–907（907 aa） Chain D 1–907（907 aa）	Not recorded	PLM PALMITIC ACID × 4 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 6	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.53 Å
9NR6 The structure of Noelin 1 with cerebellar GluA1/A4-ATD Deposited 2025-03-14	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric	Chain A 19–391（373 aa） Chain C 19–391（373 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 8 CA CALCIUM ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.26 Å
9NR7 The structure of GluA1/A4 LBD-TMD in Noelin-AMPAR complex Deposited 2025-03-14	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 407–833（427 aa） Chain C 407–833（427 aa）	Not recorded	ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.18 Å
9NR8 The structure of cerebellar GluA1/A4 ATD Deposited 2025-03-14	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric	Chain A 19–391（373 aa） Chain C 19–391（373 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.53 Å
9NRA The structure of GluA1/A4 LBD-TMD with 4 auxiliary subunits Deposited 2025-03-14	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 407–833（427 aa） Chain C 407–833（427 aa）	Not recorded	ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.18 Å
9OVT Heteromeric GluA1/A2 in the inactive state, composite map of LBD-TMD Deposited 2025-05-31	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 403–833（431 aa） Chain C 403–833（431 aa）	Not recorded	ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4 NA SODIUM ION × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 8；150 mM NaCl, 20 mM Tris-HCl pH 8.0, and 0.05% digitonin, 100 uM ZK-200775 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.43 Å
9OVU Composite map of GluA1/A2 in the activated state, in complex with positive allosteric modulator (R,R)-2b and agonist glutamate (ATD-LBD-TMD) Deposited 2025-05-31	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 1–841（841 aa） Chain C 1–841（841 aa）	Not recorded	GLU GLUTAMIC ACID × 4 NA SODIUM ION × 1 FWF N,N'-[biphenyl-4,4'-diyldi(2R)propane-2,1-diyl]dipropane-2-sulfonamide × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8；150 mM NaCl, 20 mM Tris-HCl pH 8.0, and 0.05% digitonin, 500 uM (R,R)-2b, 1 mM glutamate cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.20 Å
9OVV Heteromeric GluA1/A2-CNIH1 in the activated state, composite map of LBD-TMD Deposited 2025-05-31	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 403–833（431 aa） Chain C 403–833（431 aa）	Not recorded	GLU GLUTAMIC ACID × 4 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 16 FWF N,N'-[biphenyl-4,4'-diyldi(2R)propane-2,1-diyl]dipropane-2-sulfonamide × 2 NA SODIUM ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8；150 mM NaCl, 20 mM Tris-HCl pH 8.0, and 0.05% digitonin, 500 uM (R,R)-2b, 1 mM glutamate cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.76 Å
9OVW Heteromeric GluA1/A2 in the desensitized state, composite map of ATD-LBD-TMD Deposited 2025-05-31	Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 23–833（811 aa） Chain C 23–833（811 aa）	Not recorded	QUS (S)-2-AMINO-3-(3,5-DIOXO-[1,2,4]OXADIAZOLIDIN-2-YL)-PROPIONIC ACID × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8；150 mM NaCl, 20 mM Tris-HCl pH 8.0, and 0.05% digitonin, 1 mM quiqualate cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.91 Å

32 other PDB entries and 34 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	GRIA1_RAT
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain A； PDBConstruct 1–427； UniProt 407–833 Author chain C； PDBConstruct 1–427； UniProt 407–833

Isoform 2 of Glutamate receptor 4

OrganismNot specified

UniProt P19493

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein heterocomplex Heteromer Protein × 6 PDB declaration: hexameric（6） Consistent with protein copy count	Chain B； UniProt 417–840 Chain D； UniProt 417–840	Not recorded	Voltage-dependent calcium channel gamma-2 subunit × 2 （Q71RJ2） Glutamate receptor 1 × 2 （P19490） ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4	ELECTRON MICROSCOPY cryo-EM buffer：pH 8 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 4.22 Å

Other States of the Same Protein in the Database

Other PDB	Difference from Current Entry 9NR9	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
3EN3 Crystal Structure of the GluR4 Ligand-Binding domain in complex with kainate Deposited 2008-09-25	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 416–528（113 aa） Fragment：ligand binding domain (UNP residues 416-528 and 654-958) Chain A 654–795（142 aa） Fragment：ligand binding domain (UNP residues 416-528 and 654-958)	Not recorded	KAI 3-(CARBOXYMETHYL)-4-ISOPROPENYLPROLINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；291 K；25.5% PEG 1500, 0.05M Na-Acetate, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K	Resolution 2.43 Å R-free 0.219
3EN3 Crystal Structure of the GluR4 Ligand-Binding domain in complex with kainate Deposited 2008-09-25	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 416–528（113 aa） Fragment：ligand binding domain (UNP residues 416-528 and 654-958) Chain A 654–795（142 aa） Fragment：ligand binding domain (UNP residues 416-528 and 654-958)	Not recorded	KAI 3-(CARBOXYMETHYL)-4-ISOPROPENYLPROLINE × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；291 K；25.5% PEG 1500, 0.05M Na-Acetate, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K	Resolution 2.43 Å R-free 0.219
3EPE Crystal Structure of the GluR4 Ligand-Binding domain in complex with glutamate Deposited 2008-09-29	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 416–528（113 aa） Fragment：ligand binding domain (UNP residues 416-528 and 654-958) Chain A 654–795（142 aa） Fragment：ligand binding domain (UNP residues 416-528 and 654-958) Chain B 416–528（113 aa） Fragment：ligand binding domain (UNP residues 416-528 and 654-958) Chain B 654–795（142 aa） Fragment：ligand binding domain (UNP residues 416-528 and 654-958)	Not recorded	GLU GLUTAMIC ACID × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；291 K；25% PEG 4000, 0.1M Na-Acetate pH 4.6, 0.2M Ammonium Sulphate, VAPOR DIFFUSION, HANGING DROP, temperature 291K	Resolution 1.85 Å R-free 0.220
3FAS X-ray structure of iGluR4 flip ligand-binding core (S1S2) in complex with (S)-glutamate at 1.40A resolution Deposited 2008-11-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 415–528（114 aa） Fragment：iGluR4 flip ligand-binding core (S1S2) Chain A 654–796（143 aa） Fragment：iGluR4 flip ligand-binding core (S1S2) Chain B 415–528（114 aa） Fragment：iGluR4 flip ligand-binding core (S1S2) Chain B 654–796（143 aa） Fragment：iGluR4 flip ligand-binding core (S1S2)	Not recorded	GLU GLUTAMIC ACID × 2 SO4 SULFATE ION × 8 GOL GLYCEROL × 9	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；280 K；PEG4000, Acetate, (NH4)2SO4, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 280K	Resolution 1.40 Å R-free 0.183
3FAT X-ray structure of iGluR4 flip ligand-binding core (S1S2) in complex with (S)-AMPA at 1.90A resolution Deposited 2008-11-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 415–528（114 aa） Fragment：iGluR4 flip ligand-binding core (S1S2) Chain A 654–796（143 aa） Fragment：iGluR4 flip ligand-binding core (S1S2) Chain B 415–528（114 aa） Fragment：iGluR4 flip ligand-binding core (S1S2) Chain B 654–796（143 aa） Fragment：iGluR4 flip ligand-binding core (S1S2)	Not recorded	AMQ (S)-ALPHA-AMINO-3-HYDROXY-5-METHYL-4-ISOXAZOLEPROPIONIC ACID × 2 SO4 SULFATE ION × 5 GOL GLYCEROL × 5 ACY ACETIC ACID × 4	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；280 K；PEG 4000, Acetate, (NH4)2SO4, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 280K	Resolution 1.90 Å R-free 0.216
3FAT X-ray structure of iGluR4 flip ligand-binding core (S1S2) in complex with (S)-AMPA at 1.90A resolution Deposited 2008-11-18	Different construct Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain C 415–528（114 aa） Fragment：iGluR4 flip ligand-binding core (S1S2) Chain C 654–796（143 aa） Fragment：iGluR4 flip ligand-binding core (S1S2)	Not recorded	AMQ (S)-ALPHA-AMINO-3-HYDROXY-5-METHYL-4-ISOXAZOLEPROPIONIC ACID × 2 SO4 SULFATE ION × 4 GOL GLYCEROL × 8 ACY ACETIC ACID × 4	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.5；280 K；PEG 4000, Acetate, (NH4)2SO4, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 280K	Resolution 1.90 Å R-free 0.216
3KEI Crystal Structure of the GluA4 Ligand-Binding domain L651V mutant in complex with glutamate Deposited 2009-10-26	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 416–528（113 aa） Fragment：ligand binding domain Chain A 654–795（142 aa） Fragment：ligand binding domain Chain B 416–528（113 aa） Fragment：ligand binding domain Chain B 654–795（142 aa） Fragment：ligand binding domain	Mutation：L134V Mutation：L134V Mutation：L134V Mutation：L134V	GLU GLUTAMIC ACID × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.6；291 K；24% PEG 4000, 0.1M Na-Acetate, 0.3M Ammonium Sulphate, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 291K	Resolution 1.90 Å R-free 0.224
3KFM Crystal Structure of the GluA4 Ligand-Binding domain L651V mutant in complex with kainate Deposited 2009-10-27	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 416–528（113 aa） Fragment：ligand binding domain Chain A 654–795（142 aa） Fragment：ligand binding domain	Mutation：L134V Mutation：L134V	KAI 3-(CARBOXYMETHYL)-4-ISOPROPENYLPROLINE × 2	X-RAY DIFFRACTION X-ray crystallization conditions pH 5；291 K；18% PEG 8000, 0.1M Na-Acetate, 0.2M Ammonium Sulphate, pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 291K	Resolution 2.20 Å R-free 0.274
4GPA High resolution structure of the GluA4 N-terminal domain (NTD) Deposited 2012-08-20	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 22–401（380 aa） Fragment：N-terminal domain	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；291 K；0.74M sodium citrate, 0.1M cacodylate pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 291.0K	Resolution 2.25 Å R-free 0.235
5FWX Crystal structure of the AMPA receptor GluA2/A4 N-terminal domain heterodimer Deposited 2016-02-21	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain B 22–401（380 aa） Fragment：RESIDUES 22-401	Not recorded	SO4 SULFATE ION × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2	X-RAY DIFFRACTION X-ray crystallization conditions 17% PEG 3350 WITH 0.1-0.35 M AMMONIUM SULPHATE	Resolution 2.50 Å R-free 0.238
5FWX Crystal structure of the AMPA receptor GluA2/A4 N-terminal domain heterodimer Deposited 2016-02-21	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric	Chain D 22–401（380 aa） Fragment：RESIDUES 22-401	Not recorded	SO4 SULFATE ION × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1	X-RAY DIFFRACTION X-ray crystallization conditions 17% PEG 3350 WITH 0.1-0.35 M AMMONIUM SULPHATE	Resolution 2.50 Å R-free 0.238
9IGZ GluA4 in complex with TARP-2, resting state, structure of N-terminal domain Deposited 2025-02-20	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric	Chain A 21–902（882 aa） Chain B 21–902（882 aa） Chain C 21–902（882 aa） Chain D 21–902（882 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.50 Å
9NR6 The structure of Noelin 1 with cerebellar GluA1/A4-ATD Deposited 2025-03-14	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric	Chain B 22–399（378 aa） Chain D 22–399（378 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 8 CA CALCIUM ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.26 Å
9NR7 The structure of GluA1/A4 LBD-TMD in Noelin-AMPAR complex Deposited 2025-03-14	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain B 417–840（424 aa） Chain D 417–840（424 aa）	Not recorded	ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.18 Å
9NR8 The structure of cerebellar GluA1/A4 ATD Deposited 2025-03-14	Different construct Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric	Chain B 22–399（378 aa） Chain D 22–399（378 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.53 Å
9NRA The structure of GluA1/A4 LBD-TMD with 4 auxiliary subunits Deposited 2025-03-14	Different oligomeric state Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain B 417–840（424 aa） Chain D 417–840（424 aa）	Not recorded	ZK1 {[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.18 Å
9P9B Activated GluA4 homotetrameric AMPAR. Deposited 2025-06-24	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 25–848（824 aa） Chain B 25–848（824 aa） Chain C 25–848（824 aa） Chain D 25–848（824 aa）	Not recorded	GLU GLUTAMIC ACID × 4 CYZ CYCLOTHIAZIDE × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.31 Å
9P9C Active substate 1 of the GluA4 homotetramer. Deposited 2025-06-24	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 25–848（824 aa） Chain B 25–848（824 aa） Chain C 25–848（824 aa） Chain D 25–848（824 aa）	Not recorded	CYZ CYCLOTHIAZIDE × 4 GLU GLUTAMIC ACID × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.01 Å
9P9D Active substate 2 of the GluA4 homotetramer. Deposited 2025-06-24	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 25–848（824 aa） Chain B 25–848（824 aa） Chain C 25–848（824 aa） Chain D 25–848（824 aa）	Not recorded	GLU GLUTAMIC ACID × 4 CYZ CYCLOTHIAZIDE × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.82 Å
9P9E Active substate 3 of the GluA4 homotetramer. Deposited 2025-06-24	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 25–848（824 aa） Chain B 25–848（824 aa） Chain C 25–848（824 aa） Chain D 25–848（824 aa）	Not recorded	GLU GLUTAMIC ACID × 4 CYZ CYCLOTHIAZIDE × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.82 Å
9P9F Active substate 4 of the GluA4 homotetramer. Deposited 2025-06-24	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 25–848（824 aa） Chain B 25–848（824 aa） Chain C 25–848（824 aa） Chain D 25–848（824 aa）	Not recorded	GLU GLUTAMIC ACID × 4 CYZ CYCLOTHIAZIDE × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.89 Å
9P9G Active substate 5 of the GluA4 homotetramer. Deposited 2025-06-24	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 25–848（824 aa） Chain B 25–848（824 aa） Chain C 25–848（824 aa） Chain D 25–848（824 aa）	Not recorded	GLU GLUTAMIC ACID × 4 CYZ CYCLOTHIAZIDE × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.06 Å
9QDN GluA4 in complex with TARP-2, resting state I, structure of TMD/LBD Deposited 2025-03-06	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 21–902（882 aa） Chain B 21–902（882 aa） Chain C 21–902（882 aa） Chain D 21–902（882 aa）	Not recorded	PLM PALMITIC ACID × 16 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4 E2Q 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.71 Å
9QPW GluA4, resting state, structure of TMD/LBD Deposited 2025-03-29	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric	Chain A 21–902（882 aa） Chain B 21–902（882 aa） Chain C 21–902（882 aa） Chain D 21–902（882 aa）	Not recorded	E2Q 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.80 Å
9RMS GluA4 in complex with TARP-2, Resting II state, structure of TMD/LBD domains Deposited 2025-06-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 21–902（882 aa） Chain B 21–902（882 aa） Chain C 21–902（882 aa） Chain D 21–902（882 aa）	Not recorded	E2Q 6-nitro-2,3-bis(oxidanylidene)-1,4-dihydrobenzo[f]quinoxaline-7-sulfonamide × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.80 Å
9RMW GluA4 in complex with TARP-2, open state, structure of TMD/LBD domains Deposited 2025-06-18	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 21–902（882 aa） Chain B 21–902（882 aa） Chain C 21–902（882 aa） Chain D 21–902（882 aa）	Not recorded	PLM PALMITIC ACID × 18 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 2 CYZ CYCLOTHIAZIDE × 4 GLU GLUTAMIC ACID × 4 CA CALCIUM ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.90 Å
9RN4 GluA4 in complex with TARP-2, desensitized state, structure of TMD/LBD domains Deposited 2025-06-19	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 21–902（882 aa） Chain B 21–902（882 aa） Chain C 21–902（882 aa） Chain D 21–902（882 aa）	Not recorded	PLM PALMITIC ACID × 4 CA CALCIUM ION × 1 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.40 Å
9RN7 GluA4 in complex with TARP-2, Desensitized state, structure of TMD domain Deposited 2025-06-19	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 21–902（882 aa） Chain B 21–902（882 aa） Chain C 21–902（882 aa） Chain D 21–902（882 aa）	Not recorded	PLM PALMITIC ACID × 4 CA CALCIUM ION × 1 OLC (2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 8 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.10 Å

25 other PDB entries and 28 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	GRIA4_RAT
Isoform	P19493-2
PDB entities	3
Chains and sequence ranges	Author chain B； PDBConstruct 1–424； UniProt 417–840 Author chain D； PDBConstruct 1–424； UniProt 417–840

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

Download Download SAXS (.dat) P(r) (.pr.out) CIF

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	9nr9
Deposition date deposition_date	2025-03-14
Structure title title	The structure of GluA1/A4 LBD-TMD with 2 TARPs
Keywords keywords	iGluR, CP-AMPA receptors, MEMBRANE PROTEIN; MEMBRANE PROTEIN
Experimental Method method	ELECTRON MICROSCOPY

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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier	43.86 Å
Radius of gyration Rg (electron density) rg_electron	43.66 Å
Forward intensity I(0) i0	516421000.00
Molecular weight molecular_weight	194060.0 kDa
Excluded volume excluded_volume	245560 Å³
Envelope volume envelope_volume	367770 Å³
Hydration-shell volume shell_volume	70445 Å³
Envelope diameter envelope_diameter	137.9 Å
Shell Rg shell_rg	48.46 Å
Envelope Rg envelope_rg	42.53 Å
Shape Rg shape_rg	43.65 Å
Total Rg total_rg	43.93 Å
Total atoms total_atoms	13679
Residues n_residues	1865
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	142.6 Å
Rg (real space) rg_real	43.69 Å
Rg uncertainty (real space) rg_real_error	0.91 Å
I(0) (real space) i0_real	5.1640e+08
I(0) uncertainty (real space) i0_real_error	8.1110e+06
Rg (reciprocal space) rg_reciprocal	43.86 Å
I(0) (reciprocal space) i0_reciprocal	516500000.0000
Solution quality estimate total_estimate	0.8978
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	2
Primary peak position r_peak_primary	55.4 Å
Skewness Skewness skewness	0.135
Kurtosis Kurtosis kurtosis	-0.579
Angular range angular_range	— – 0.1800 Å⁻¹
Current regularization parameter α current_alpha	0.0001
Highest regularization parameter α highest_alpha	102300000.0000
Real-space data points n_real_points	37
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.907; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.997; Smooth: 0.949

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Description description	Voltage-dependent calcium channel gamma-2 subunit
Molecular weight formula_weight	22590.0 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	F,H
Atom count atom_count	13679

DRGVQMLLTTVGAFAAFSLMTIAVGTDYWLYSRGVCKTKSVSENETSKKNEEVMTHSGLWRTCCLEGNFKGLCKQIDHFPEDADYEADTAEYFLRAVRASSIFPILSVILLFMGGLCIAASEFYKTRHNIILSAGIFFVSAGLSNIIGIIVYISANAGDPSKSDSKKNSYSYGWSFYFGALSFIIAEMVGVLAVHMFIDRHKQL

Entity 2 Entity 2 polymer

Description description	Glutamate receptor 1
Molecular weight formula_weight	47879.9 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,C

RTYIVTTILEDPYVMLKKNANQFEGNDRYEGYCVELAAEIAKHVGYSYRLEIVSDGKYGARDPDTKAWNGMVGELVYGRADVAVAPLTITLVREEVIDFSKPFMSLGISIMIKKPQKSKPGVFSFLDPLAYEIWMCIVFAYIGVSVVLFLVSRFSPYEWHSEEFEEGRDQTTSDQSNEFGIFNSLWFSLGAFMQQGCDISPRSLSGRIVGGVWWFFTLIIISSYTANLAAFLTVERMVSPIESAEDLAKQTEIAYGTLEAGSTKEFFRRSKIAVFEKMWTYMKSAEPSVFVRTTEEGMIRVRKSKGKYAYLLESTMNEYIEQRKPCDTMKVGGNLDSKGYGIATPKGSALRNPVNLAVLKLNEQGLLDKLKNKWWYDKGECGSGGGDSKDKTSALSLSNVAGVFYILIGGLGLAMLVALIEFCYKSR

Entity 3 Entity 3 polymer

Description description	Isoform 2 of Glutamate receptor 4
Molecular weight formula_weight	47173.3 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,D

VVVTTIMESPYVMYKKNHEMFEGNDKYEGYCVDLASEIAKHIGIKYKIAIVPDGKYGARDADTKIWNGMVGELVYGKAEIAIAPLTITLVREEVIDFSKPFMSLGISIMIKKPQKSKPGVFSFLDPLAYEIWMCIVFAYIGVSVVLFLVSRFSPYEWHTEEPEDGKEGPSDQPPNEFGIFNSLWFSLGAFMQQGCDISPRSLSGRIVGGVWWFFTLIIISSYTANLAAFLTVERMVSPIESAEDLAKQTEIAYGTLDSGSTKEFFRRSKIAVYEKMWTYMRSAEPSVFTRTTAEGVARVRKSKGKFAFLLESTMNEYTEQRKPCDTMKVGGNLDSKGYGVATPKGSSLRTPVNLAVLKLSEAGVLDKLKNKWWYDKGECGPKDSGSKDKTSALSLSNVAGVFYILVGGLGLAMLVALIEFCYKS

Entity 4 Entity 4 non-polymer

Description description	{[7-morpholin-4-yl-2,3-dioxo-6-(trifluoromethyl)-3,4-dihydroquinoxalin-1(2H)-yl]methyl}phosphonic acid
Molecular weight formula_weight	409.3 kDa
Source method src_method	syn
Copy count entity_count	4

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8. Citations (1)

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Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	—

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	—

Resolution resolution	4.220 Å
Low-resolution limit resolution_low	— Å
R factor r_factor	—
R_work r_work	—
R_free r_free	—

Resolution resolution	4.22 Å
Resolution测定方法 resolution_method	—
颗粒数 num_particles	27128

fit	/app/data/saxs_computation/nr/9nr9/9nr9.fit
pddf	/app/data/pr_computation/nr/9nr9/9nr9.pr.out
profile	/app/data/saxs_computation/nr/9nr9/9nr9.dat

The structure of GluA1/A4 LBD-TMD with 2 TARPs

1. Protein Identity and Related Structures Protein Identity & Related Structures

Voltage-dependent calcium channel gamma-2 subunit

State in the Current Structure

Other States of the Same Protein in the Database

Glutamate receptor 1

State in the Current Structure

Other States of the Same Protein in the Database

Isoform 2 of Glutamate receptor 4

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

5. Crystallography and Experiment 5. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

冷冻电镜 EM 3D

6. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Entity 4 Entity 4 non-polymer

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)