2ABX

THE CRYSTAL STRUCTURE OF ALPHA-BUNGAROTOXIN AT 2.5 ANGSTROMS RESOLUTION. RELATION TO SOLUTION STRUCTURE AND BINDING TO ACETYLCHOLINE RECEPTOR


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The crystal structure of alpha-bungarotoxin at 2.5 A resolution: relation to solution structure and binding to acetylcholine receptor.

Love, R.A.Stroud, R.M.

(1986) Protein Eng. 1: 37-46


  • PubMed Abstract: 
  • We report collection of 2.5 A resolution X-ray diffraction data from newly grown crystals of the rare 'small unit cell' form of the long snake neurotoxin, alpha-bungarotoxin. The previous model of the molecule has been rebuilt, and refined using leas ...

    We report collection of 2.5 A resolution X-ray diffraction data from newly grown crystals of the rare 'small unit cell' form of the long snake neurotoxin, alpha-bungarotoxin. The previous model of the molecule has been rebuilt, and refined using least-square methods to a crystallographic residual of 0.24 at 2.5 A resolution. alpha-Bungarotoxin's crystal structure is compared with the crystal structures of two other snake neurotoxins (cobratoxin and erabutoxin), and with its solution structure inferred from spectroscopic studies. Significant differences include less beta-sheet in bungarotoxin's crystal structure than in solution, or in the crystal structures of other neurotoxins, and an unusual orientation in the crystal of the invariant tryptophan. The functional, binding surface of bungarotoxin is described; it consists primarily of hydrophobic and hydrogen-bonding groups and only a few charged side-chains. The structure is compared with experimental binding parameters for neurotoxins.


    Related Citations: 
    • Alpha-Bungarotoxin Structure Revealed by a Rapid Method for Averaging Electron Density of Non-Crystallographically Translationally Related Molecules
      Agard, D.A.,Stroud, R.M.
      (1982) Acta Crystallogr.,Sect.A 38: 186


    Organizational Affiliation

    Department of Biochemistry and Biophysics, University of California, San Francisco 94143-0448.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ALPHA-BUNGAROTOXIN
A, B
74Bungarus multicinctusMutation(s): 0 
Find proteins for P60615 (Bungarus multicinctus)
Go to UniProtKB:  P60615
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 67.800α = 90.00
b = 78.400β = 90.00
c = 22.400γ = 90.00
Software Package:
Software NamePurpose
PROLSQrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1986-02-19 
  • Released Date: 1986-05-07 
  • Deposition Author(s): Love, R., Stroud, R.
  • This entry supersedes: 1ABX

Revision History 

  • Version 1.0: 1986-05-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance