Determination of three-dimensional solution structure of waglerin I, a toxin from Trimeresurus wagleri, using 2D-NMR and molecular dynamics simulation

Li Chin Chuang, Hui Ming Yu, Chinpan Chen, Tai Huang Huang, Shih Hsiung Wu, Kung Tsung Wang

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The solution conformation of a synthetic snake venom toxin waglerin I, has been determined by using proton nuclear magnetic resonance spectroscopy. By a combination of various two-dimensional NMR techniques, the 1H-NMR spectrum of waglerin I was completely assigned. A set of 247 interproton distance restraints was derived from nuclear Overhauser enhancement (NOE) measurements. These NOE constraints, in addition to the 2 dihedral angle restraints (from coupling constant measurements) and 7 ω torsion angle restraints for prolines, formed the basis of three-dimensional structure determined by molecular dynamics techniques. The 19 structures that were obtained satisfy the experimental restraints, and display small deviation from idealized covalent geometry. Analysis of converged structures indicates that the toxin has no special secondary structure. In the solution structure of waglerin I, the central ring region is well defined but the N- and C-termini possesses more disorder.

Original languageEnglish
Pages (from-to)145-155
Number of pages11
JournalBiochimica et Biophysica Acta - Protein Structure and Molecular Enzymology
Volume1292
Issue number1
DOIs
Publication statusPublished - 1996 Jan 4

Fingerprint

Trimeresurus
Molecular Dynamics Simulation
Molecular dynamics
Nuclear magnetic resonance
Computer simulation
Snake Venoms
Dihedral angle
Proline
Torsional stress
Nuclear magnetic resonance spectroscopy
Conformations
Magnetic Resonance Spectroscopy
Geometry
waglerin
scorpion toxin I''
Proton Magnetic Resonance Spectroscopy

Keywords

  • Molecular dynamics simulation
  • Nuclear magnetic resonance
  • Protein solution structure
  • Snake venom
  • T. wagleri
  • Waglerin

ASJC Scopus subject areas

  • Biophysics
  • Structural Biology
  • Biochemistry
  • Molecular Biology

Cite this

Determination of three-dimensional solution structure of waglerin I, a toxin from Trimeresurus wagleri, using 2D-NMR and molecular dynamics simulation. / Chuang, Li Chin; Yu, Hui Ming; Chen, Chinpan; Huang, Tai Huang; Wu, Shih Hsiung; Wang, Kung Tsung.

In: Biochimica et Biophysica Acta - Protein Structure and Molecular Enzymology, Vol. 1292, No. 1, 04.01.1996, p. 145-155.

Research output: Contribution to journalArticle

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