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NMR STRUCTURE OF THE COMPLEX BETWEEN ALPHA-BUNGAROTOXIN AND MIMOTOPE OF THE NICOTINIC ACETYLCHOLINE RECEPTOR WITH ENHANCED ACTIVITY


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 
  • Selection Criteria: structures with favorable non-bond energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

NMR and MD studies on the interaction between ligand peptides and alpha-bungarotoxin.

Bernini, A.Ciutti, A.Spiga, O.Scarselli, M.Klein, S.Vannetti, S.Bracci, L.Lozzi, L.Lelli, B.Falciani, C.Neri, P.Niccolai, N.

(2004) J.Mol.Biol. 339: 1169-1177

  • DOI: 10.1016/j.jmb.2004.04.041

  • PubMed Abstract: 
  • The interaction between alpha-bungarotoxin and linear synthetic peptides, mimotope of the nicotinic acetylcholine receptor binding site, has been characterised extensively by several methods and a wealth of functional, kinetic and structural data are ...

    The interaction between alpha-bungarotoxin and linear synthetic peptides, mimotope of the nicotinic acetylcholine receptor binding site, has been characterised extensively by several methods and a wealth of functional, kinetic and structural data are available. Hence, this system represents a suitable model to explore in detail the dynamics of a peptide-protein interaction. Here, the solution structure of a new complex of the protein toxin with a tridecapeptide ligand exhibiting high affinity has been determined by NMR. As observed for three other previously reported mimotope-alpha-bungarotoxin complexes, also in this case correlations between biological activity and kinetic data are not fully consistent with a static discussion of structural data. Molecular dynamics simulations of the four mimotope-toxin complexes indicate that a relevant contribution to the complex stability is given by the extent of the residual flexibility that the protein maintains upon peptide binding. This feature, limiting the entropy loss caused by protein folding and binding, ought to be generally considered in a rational design of specific protein ligands.


    Organizational Affiliation

    Biomolecular Structure Research Center and Department of Molecular Biology, University of Siena, via Fiorentina 1, I-53100 Siena, Italy. andrea.bernini@unisi.it




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
long neurotoxin 1
A
74Bungarus multicinctusMutation(s): 0 
Find proteins for P60615 (Bungarus multicinctus)
Go to UniProtKB:  P60615
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
MIMOTOPE OF THE NICOTINIC ACETYLCHOLINE RECEPTOR
B
13N/AMutation(s): 0 
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 favorable non-bond energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-11-25
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance