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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：P50983 New Search
13PDB entries
13Biological assembly
28chain/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
1CNL ALPHA-CONOTOXIN IMI Deposited 1999-05-20 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–12（12 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 3.1；280 K
NMR sample composition 10% D2O/90% H2O
Resolution not provided
1E74 NMR SOLUTION STRUCTURE OF ALPHA-CONOTOXIN IM1 POINT MUTATION VARIANT R11E Deposited 2000-08-24 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–12（12 aa）
Mutation：YES Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 3.1；298 K
Resolution not provided
1E75 NMR SOLUTION STRUCTURE OF ALPHA-CONOTOXIN IM1 POINT MUTATION VARIANT R7L Deposited 2000-08-24 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–12（12 aa）
Mutation：YES Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 3.7；298 K
Resolution not provided
1E76 NMR SOLUTION STRUCTURE OF ALPHA-CONOTOXIN IM1 POINT MUTATION VARIANT D5N Deposited 2000-08-24 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–12（12 aa）
Mutation：YES Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 4.1；298 K
Resolution not provided
1G2G MINIMAL CONFORMATION OF THE ALPHA-CONOTOXIN IMI FOR THE ALPHA7 NEURONAL NICOTINIC ACETYLCHOLINE RECEPTOR RECOGNITION Deposited 2000-10-19 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–12（12 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 5.8；278 K；Ionic strength (raw mmCIF value) 0.1；Pressure ambient
NMR sample composition 5-6 mM alpha-ImI; 90 % H2O, 10 % D2O; 0.1 M potassium phosphate buffer pH 5.8 | 90 % H2O, 10 % D2O; 0.1 M potassium phosphate buffer pH 5.8
Resolution not provided
1IM1 NMR SOLUTION STRUCTURE OF ALPHA-CONOTOXIN IM1, 20 STRUCTURES Deposited 1998-11-18 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–12（12 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 3；298 K
NMR sample composition 90% H2O/10% D2O OR 100% D2O
Resolution not provided
1IMI SOLUTION STRUCTURE OF ALPHA-CONOTOXIN IM1 Deposited 1998-11-27 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–12（12 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 5.5；278 K；Pressure 1
NMR sample composition 90% H2O/ 10% D2O
Resolution not provided
2BC7 Solution structure of [Sec2,8]-ImI Deposited 2005-10-18 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 5–16（12 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 3.5；290 K；Ionic strength (raw mmCIF value) 1；Pressure ambient
NMR sample composition 1mM peptide | 90% H2O/10% D2O
Resolution not provided
2BC8 [Sec2,3,8,12]-ImI Deposited 2005-10-18 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 5–16（12 aa）
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 3.5；290 K；Ionic strength (raw mmCIF value) 1；Pressure ambient
NMR sample composition 2mM [Sec2,3,8,12]-ImI | 90% D2O, 10% H2O
NMR sample composition 2mM [Sec2,3,8,12]-ImI | 100% D2O
Resolution not provided
2BYP Crystal structure of Aplysia californica AChBP in complex with alpha- conotoxin ImI Deposited 2005-08-03 Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain F 5–16（12 aa）
Chain G 5–16（12 aa）
Chain H 5–16（12 aa）
Chain I 5–16（12 aa）
Chain J 5–16（12 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.5；11-14% PEG-4000, 0.1 M TRIS, PH 7.5, 0.4 M MGCL2
Resolution 2.07 Å R-free 0.214
2C9T Crystal Structure Of Acetylcholine Binding Protein (AChBP) From Aplysia Californica In Complex With alpha-Conotoxin ImI Deposited 2005-12-14 Assembly 1 Protein heterocomplex Heteromer；Protein × 18 PDB declaration: octadecameric（18） Consistent with protein count
Chain K 5–16（12 aa） Fragment：RESIDUES 5-16
Chain M 5–16（12 aa） Fragment：RESIDUES 5-16
Chain O 5–16（12 aa） Fragment：RESIDUES 5-16
Chain P 5–16（12 aa） Fragment：RESIDUES 5-16
Chain Q 5–16（12 aa） Fragment：RESIDUES 5-16
Chain R 5–16（12 aa） Fragment：RESIDUES 5-16
Chain S 5–16（12 aa） Fragment：RESIDUES 5-16
Chain T 5–16（12 aa） Fragment：RESIDUES 5-16
Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions 100 MM SODIUM ACETATE PH 5.5, 12.5% PEG5000 MME
Resolution 2.25 Å R-free 0.227
2MOA Solution NMR structure of peptide ImI1 (peak 2) Deposited 2014-04-24 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 5–16（12 aa） Fragment：UNP residues 5-16
Mutation：C2(81S), C3A Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 5.8；278 K；Ionic strength (raw mmCIF value) 0.1；Pressure ambient
NMR sample composition 1 mM ImI1, 90% H2O/10% D2O | 90% H2O/10% D2O
Resolution not provided
9NX0 Alpha7-nicotinic acetylcholine receptor bound to conotoxin ImI Deposited 2025-03-25 Assembly 1 Other combination Heteromer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain F 5–16（12 aa） Fragment：residues 5-16
Chain G 5–16（12 aa） Fragment：residues 5-16
Chain H 5–16（12 aa） Fragment：residues 5-16
Chain I 5–16（12 aa） Fragment：residues 5-16
Chain J 5–16（12 aa） Fragment：residues 5-16
Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 5 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 3.06 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.