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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：P01391 New Search
13PDB entries
22Biological assembly
31chain/assembly records
Main Difference Dimensions in This Set
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
1CTX THREE-DIMENSIONAL STRUCTURE OF THE-LONG-NEUROTOXIN FROM COBRA VENOM Deposited 1982-04-08 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–71（71 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.80 Å
1LXG Solution structure of alpha-cobratoxin complexed with a cognate peptide (structure ensemble) Deposited 2002-06-05 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–71（71 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 4；308 K；Pressure AMBIENT
NMR sample composition 1.6 mM alpha-cobratoxin/alpha18-mer complex, alpha18-mer is U-15N, 50 mM perdeuterated potassium acetate buffer (pH 4.0) with 5% D2O and 0.05% sodium azide | 95% H2O/5% D2O
Resolution not provided
1LXH Solution structure of alpha-cobratoxin complexed with a cognate peptide (minimized average structure) Deposited 2002-06-05 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–71（71 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 4；308 K；Ionic strength (raw mmCIF value) NULL；Pressure AMBIENT
NMR sample composition 1.6 mM alpha-cobratoxin/alpha18-mer complex, alpha18-mer is U-15N, 50 mM perdeuterated potassium acetate buffer (pH 4.0) with 5% D2O and 0.05% sodium azide | 95% H2O/5% D2O
Resolution not provided
1YI5 Crystal structure of the a-cobratoxin-AChBP complex Deposited 2005-01-11 Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain F 1–71（71 aa）
Chain G 1–71（71 aa）
Chain H 1–71（71 aa）
Chain I 1–71（71 aa）
Chain J 1–71（71 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8.5；277 K；0.9M NA-CITRATE, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K
Resolution 4.20 Å R-free 0.378
4AEA Dimeric alpha-cobratoxin X-ray structure: Localization of intermolecular disulfides and possible mode of binding to nicotinic acetylcholine receptors Deposited 2012-01-09 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–71（71 aa）
Not recorded GLY GLYCINE × 2 MPD (4S)-2-METHYL-2,4-PENTANEDIOL × 2 X-RAY DIFFRACTION
X-ray crystallization conditions pH 2；60% (V/V) 2-METHYL-2,4- PENTANEDIOL, 0.1 M GLYCINE-HCL PH 2
Resolution 1.94 Å R-free 0.251
4AEA Dimeric alpha-cobratoxin X-ray structure: Localization of intermolecular disulfides and possible mode of binding to nicotinic acetylcholine receptors Deposited 2012-01-09 Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–71（71 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 2；60% (V/V) 2-METHYL-2,4- PENTANEDIOL, 0.1 M GLYCINE-HCL PH 2
Resolution 1.94 Å R-free 0.251
6ZFM Structure of alpha-Cobratoxin with a peptide inhibitor Deposited 2020-06-17 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 1–71（71 aa）
Chain B 1–71（71 aa）
Chain D 1–71（71 aa）
Chain E 1–71（71 aa）
Not recorded QJE 3-[2-[2-[2-[2-[2-(2-azanylethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]propan-1-ol × 2 1PE PENTAETHYLENE GLYCOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；293 K；0.1 M Carboxylic acids (sodium formate / ammonium acetate / sodium citrate / sodium potassium tartrate / sodium oxamate), 0.1 M HEPES / MOPS pH7.5, 30.0 % v/v PEG 500 MME / PEG 20000
Resolution 1.90 Å R-free 0.230
7PC0 GABA-A receptor bound by a-Cobratoxin Deposited 2021-08-03 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain K 1–71（71 aa）
Chain L 1–71（71 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 4 HSM HISTAMINE × 1 ZN ZINC ION × 1 HEX HEXANE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
7ULG recombinant alpha cobra toxin Deposited 2022-04-04 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–71（71 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.9；291.15 K；110 mg/ml in 200 mM NH4Ac (pH 7.0/25 DC), 1:1 with 0.1 M HEPES (pH 7.9), 30% Jeffamine M-600 (pH 7.0), 18 DC
Resolution 1.57 Å R-free 0.181
7ULG recombinant alpha cobra toxin Deposited 2022-04-04 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–71（71 aa）
Not recorded EPE 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.9；291.15 K；110 mg/ml in 200 mM NH4Ac (pH 7.0/25 DC), 1:1 with 0.1 M HEPES (pH 7.9), 30% Jeffamine M-600 (pH 7.0), 18 DC
Resolution 1.57 Å R-free 0.181
7ULG recombinant alpha cobra toxin Deposited 2022-04-04 Assembly 3 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain C 1–71（71 aa）
Not recorded ACT ACETATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.9；291.15 K；110 mg/ml in 200 mM NH4Ac (pH 7.0/25 DC), 1:1 with 0.1 M HEPES (pH 7.9), 30% Jeffamine M-600 (pH 7.0), 18 DC
Resolution 1.57 Å R-free 0.181
7ULG recombinant alpha cobra toxin Deposited 2022-04-04 Assembly 4 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain D 1–71（71 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.9；291.15 K；110 mg/ml in 200 mM NH4Ac (pH 7.0/25 DC), 1:1 with 0.1 M HEPES (pH 7.9), 30% Jeffamine M-600 (pH 7.0), 18 DC
Resolution 1.57 Å R-free 0.181
9BK5 Structure of LNG binder complex Deposited 2024-04-26 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–71（71 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；1.5 M Ammonium Sulfate and 25% (v/v) glycerol
Resolution 2.68 Å R-free 0.268
9FYT mAbs in complex with cobratoxin at pH 4.5 Deposited 2024-07-03 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 1–71（71 aa）
Chain B 1–71（71 aa）
Not recorded CL CHLORIDE ION × 3 GOL GLYCEROL × 5 SO4 SULFATE ION × 1 NA SODIUM ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；293 K；0.1 M Bis-Tris pH 6.5, 0.2 M Ammonium Sulfate, 25% PEG 3350
Resolution 1.55 Å R-free 0.237
9GCN Co-crystal VHH (TPL1158_01_C09) - alpha-cobratoxin (Naja kaouthia) Deposited 2024-08-02 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain Z 1–71（71 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；298.15 K；1.5 mM Tris and 6.5 mM NaCl, 17% (w/v) PEG1500. 20% (v/v) glycerol as cryopreservative.
Resolution 3.00 Å R-free 0.292
9GCN Co-crystal VHH (TPL1158_01_C09) - alpha-cobratoxin (Naja kaouthia) Deposited 2024-08-02 Assembly 2 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain Y 1–71（71 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；298.15 K；1.5 mM Tris and 6.5 mM NaCl, 17% (w/v) PEG1500. 20% (v/v) glycerol as cryopreservative.
Resolution 3.00 Å R-free 0.292
9GCN Co-crystal VHH (TPL1158_01_C09) - alpha-cobratoxin (Naja kaouthia) Deposited 2024-08-02 Assembly 3 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain V 1–71（71 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；298.15 K；1.5 mM Tris and 6.5 mM NaCl, 17% (w/v) PEG1500. 20% (v/v) glycerol as cryopreservative.
Resolution 3.00 Å R-free 0.292
9GCN Co-crystal VHH (TPL1158_01_C09) - alpha-cobratoxin (Naja kaouthia) Deposited 2024-08-02 Assembly 4 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain X 1–71（71 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；298.15 K；1.5 mM Tris and 6.5 mM NaCl, 17% (w/v) PEG1500. 20% (v/v) glycerol as cryopreservative.
Resolution 3.00 Å R-free 0.292
9HUO A01 mAbs bound to cobratoxin at pH 5.5 Deposited 2024-12-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 1–71（71 aa）
Not recorded GOL GLYCEROL × 2 CL CHLORIDE ION × 1 K POTASSIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 5.5；293 K；25% PEG3350, 0.1M Bis-Tris pH5.5, 0.25 M AmS
Resolution 1.60 Å R-free 0.225
9HUO A01 mAbs bound to cobratoxin at pH 5.5 Deposited 2024-12-23 Assembly 2 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 1–71（71 aa）
Not recorded GOL GLYCEROL × 3 NA SODIUM ION × 2 SO4 SULFATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 5.5；293 K；25% PEG3350, 0.1M Bis-Tris pH5.5, 0.25 M AmS
Resolution 1.60 Å R-free 0.225
9HXO A01 mAbs bound to cobratoxin at pH 6.0 Deposited 2025-01-07 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–71（71 aa）
Not recorded CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 6；293 K；25% PEG3350, 0.1M Bis-Tris pH 6.0, 0.3 M Ammonium Sulphate
Resolution 1.49 Å R-free 0.248
9HXO A01 mAbs bound to cobratoxin at pH 6.0 Deposited 2025-01-07 Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain B 1–71（71 aa）
Not recorded GOL GLYCEROL × 1 TRS 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 6；293 K；25% PEG3350, 0.1M Bis-Tris pH 6.0, 0.3 M Ammonium Sulphate
Resolution 1.49 Å R-free 0.248

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.