1JBD

NMR Structure of the Complex Between alpha-bungarotoxin and a Mimotope of the Nicotinic Acetylcholine Receptor


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

NMR structure of alpha-bungarotoxin free and bound to a mimotope of the nicotinic acetylcholine receptor.

Scarselli, M.Spiga, O.Ciutti, A.Bernini, A.Bracci, L.Lelli, B.Lozzi, L.Calamandrei, D.Di Maro, D.Klein, S.Niccolai, N.

(2002) Biochemistry 41: 1457-1463

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • A combinatorial library approach was used to produce synthetic peptides mimicking the snake neurotoxin binding site of nicotinic receptors. Among the sequences, which inhibited binding of alpha-bungarotoxin to muscle and neuronal nicotinic receptors, ...

    A combinatorial library approach was used to produce synthetic peptides mimicking the snake neurotoxin binding site of nicotinic receptors. Among the sequences, which inhibited binding of alpha-bungarotoxin to muscle and neuronal nicotinic receptors, HRYYESSLPWYPD, a 14-amino acid peptide with considerably higher toxin-binding affinity than the other synthesized peptides, was selected, and the structure of its complex with the toxin was analyzed by NMR. Comparison of the solution structure of the free toxin and its complex with this peptide indicated that complex formation induced extensive conformational rearrangements mainly at finger II and the carboxy terminus of the protein. The peptidyl residues P10 and Y4 seemed to be critical for peptide folding and complex stability, respectively. The latter residue of the peptide strongly interacted with the protein by entering a small pocket delimited by D30, C33, S34, R36, and V39 toxin side chains.


    Related Citations: 
    • Peptide-protein interactions studied by surface plasmon and nuclear magnetic resonances
      Spiga, O.,Bernini, A.,Scarselli, M.,Ciutti, A.,Bracci, L.,Lozzi, L.,Lelli, B.,Di Maro, D.,Calamandrei, D.,Niccolai, N.
      (2002) FEBS Lett. 511: 33


    Organizational Affiliation

    Department of Molecular Biology and Biomolecular Structure Research Center, University of Siena, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
LONG NEUROTOXIN 1
A
74Bungarus multicinctus
Find proteins for P60615 (Bungarus multicinctus)
Go to UniProtKB:  P60615
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
MIMOTOPE OF THE NICOTINIC ACETYLCHOLINE RECEPTOR
B
14N/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-06-27
    Type: Initial release
  • Version 1.1: 2007-10-21
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance