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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：P02718 New Search
21PDB entries
21Biological assembly
25chain/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
1EQ8 THREE-DIMENSIONAL STRUCTURE OF THE PENTAMERIC HELICAL BUNDLE OF THE ACETYLCHOLINE RECEPTOR M2 TRANSMEMBRANE SEGMENT Deposited 2000-04-03 Assembly 1 Protein homooligomer Homooligomer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 276–298（23 aa） Fragment：M2 SEGMENT
Chain B 276–298（23 aa） Fragment：M2 SEGMENT
Chain C 276–298（23 aa） Fragment：M2 SEGMENT
Chain D 276–298（23 aa） Fragment：M2 SEGMENT
Chain E 276–298（23 aa） Fragment：M2 SEGMENT
Not recorded No recorded non-water small molecule SOLID-STATE NMR
NMR measurement conditions pH 5.5；303 K；Pressure ambient
NMR measurement conditions pH 5.5；298 K；Pressure ambient
NMR sample composition 1mM M2 U-15N; 350mM DPC; pH5.5; | 90% H2O/10% D2O
NMR sample composition 20mg M2 U-15N; 40mg DMPC; | DMPC bilayers in H2O;
Resolution not provided
6UWZ Cryo-EM structure of Torpedo acetylcholine receptor in complex with alpha-bungarotoxin Deposited 2019-11-06 Assembly 1 Other combination Heteromer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain B 22–522（501 aa）
Not recorded POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 5 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 OCT N-OCTANE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.69 Å
7QKO Torpedo muscle-type nicotinic acetylcholine receptor - Resting conformation Deposited 2021-12-18 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain C 22–522（501 aa）
Not recorded POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 9 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 Å
7QL5 Torpedo muscle-type nicotinic acetylcholine receptor - nicotine-bound conformation Deposited 2021-12-19 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain C 22–522（501 aa）
Not recorded NCT (S)-3-(1-METHYLPYRROLIDIN-2-YL)PYRIDINE × 2 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 11 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.50 Å
7QL6 Torpedo muscle-type nicotinic acetylcholine receptor - carbamylcholine-bound conformation Deposited 2021-12-19 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain C 22–522（501 aa）
Not recorded CCE 2-[(AMINOCARBONYL)OXY]-N,N,N-TRIMETHYLETHANAMINIUM × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.23 Å
7SMM Cryo-EM structure of Torpedo acetylcholine receptor in apo form Deposited 2021-10-26 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain B 22–522（501 aa）
Not recorded POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 8 CLR CHOLESTEROL × 3 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 DD9 nonane × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.50 Å
7SMQ Cryo-EM structure of Torpedo acetylcholine receptor in apo form with added cholesterol Deposited 2021-10-26 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain B 22–522（501 aa）
Not recorded POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 8 CLR CHOLESTEROL × 11 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 DD9 nonane × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.74 Å
7SMR Cryo-EM structure of Torpedo acetylcholine receptor in complex with carbachol, desensitized state Deposited 2021-10-26 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain B 22–522（501 aa）
Not recorded CCE 2-[(AMINOCARBONYL)OXY]-N,N,N-TRIMETHYLETHANAMINIUM × 2 CLR CHOLESTEROL × 3 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 6 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 DD9 nonane × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.77 Å
7SMS Cryo-EM structure of Torpedo acetylcholine receptor in complex with d-tubocurarine Deposited 2021-10-26 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain B 22–522（501 aa）
Not recorded CLR CHOLESTEROL × 3 TC9 D-TUBOCURARINE × 4 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 5 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.18 Å
7SMT Cryo-EM structure of Torpedo acetylcholine receptor in complex with d-tubocurarine and carbachol Deposited 2021-10-26 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain B 22–522（501 aa）
Not recorded CCE 2-[(AMINOCARBONYL)OXY]-N,N,N-TRIMETHYLETHANAMINIUM × 1 CLR CHOLESTEROL × 3 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 5 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 DD9 nonane × 1 TC9 D-TUBOCURARINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.56 Å
7Z14 Cryo-EM structure of Torpedo nicotinic acetylcholine receptor in complex with a short-chain neurotoxin. Deposited 2022-02-24 Assembly 1 Other combination Heteromer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain C 22–522（501 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.15 Å
8ESK Cryo-EM structure of Torpedo nicotinic acetylcholine receptor in complex with rocuronium, resting-like state Deposited 2022-10-14 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain B 22–522（501 aa）
Not recorded RBR rocuronium × 2 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 8 CLR CHOLESTEROL × 3 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 Å
8F2S Cryo-EM structure of Torpedo nicotinic acetylcholine receptor in complex with rocuronium, pore-blocked state Deposited 2022-11-08 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain B 22–521（500 aa）
Not recorded RBR rocuronium × 3 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 6 CLR CHOLESTEROL × 3 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 DD9 nonane × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 Å
8F6Y Cryo-EM structure of Torpedo nicotinic acetylcholine receptor in complex with etomidate, desensitized-like state Deposited 2022-11-17 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain B 22–521（500 aa）
Not recorded V8D Etomidate × 2 CHT CHOLINE ION × 2 CLR CHOLESTEROL × 3 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 6 DD9 nonane × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.79 Å
8F6Z Cryo-EM structure of Torpedo nicotinic acetylcholine receptor in complex with succinylcholine, desensitized-like state Deposited 2022-11-17 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain B 22–521（500 aa）
Not recorded SCK 2,2'-[(1,4-DIOXOBUTANE-1,4-DIYL)BIS(OXY)]BIS(N,N,N-TRIMETHYLETHANAMINIUM) × 2 CLR CHOLESTEROL × 3 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 5 DD9 nonane × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.70 Å
8QQM nicotinic acetylcholine receptor in intact synaptic membrane Deposited 2023-10-05 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain B 22–522（501 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.70 Å
8YQN Torpedo acetylcholine receptor in complex with Erabutoxin A Deposited 2024-03-19 Assembly 1 Other combination Heteromer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain B 22–522（501 aa）
Not recorded POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 4 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 3 OCT N-OCTANE × 1 PLM PALMITIC ACID × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.27 Å
9E3E Torpedo muscle-type nicotinic acetylcholine receptor - Diliganded State Deposited 2024-10-23 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain C 22–522（501 aa）
Not recorded ACH ACETYLCHOLINE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.80 Å
9E3F Torpedo muscle-type nicotinic acetylcholine receptor - Unliganded State Deposited 2024-10-23 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain C 22–522（501 aa）
Not recorded POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 8 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
9E3G Torpedo muscle-type nicotinic acetylcholine receptor - Monoliganded State Deposited 2024-10-23 Assembly 1 Other combination Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain C 22–522（501 aa）
Not recorded ACH ACETYLCHOLINE × 1 POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 5 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；This map comes from particles from five datasets recorded in the presence of five sub-saturating concentrations of acetylcholine: 20, 50, 100, 250, and 500 nM.
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.13 Å
9NX2 Muscle-type nicotinic acetylcholine receptor bound to conotoxin ImII Deposited 2025-03-25 Assembly 1 Other combination Heteromer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain B 23–521（499 aa）
Not recorded CCE 2-[(AMINOCARBONYL)OXY]-N,N,N-TRIMETHYLETHANAMINIUM × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.96 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.