High resolution nuclear magnetic resonance studies of the conformation and orientation of melittin bound to a lipid-water interface

L. R. Brown, W. Braun, A. Kumar, K. Wüthrich

Research output: Contribution to journalArticle

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Abstract

Previously, the size and stoichiometry of mixed micelles of perdeuterated dodecylphosphocholine and melittin were characterized and the 1H NMR spin systems of most amino acid residues of micelle-bound melittin identified. One- and two-dimensional 1H-1H Overhauser experiments have now been used to obtain qualitative information on intramolecular proton-proton distances. These data show that the N-terminal and the C-terminal segments of melittin form two spatially distinct, compact domains; using lipid spin labels these could be located near the micelle surface. For the C-terminal domain a detailed conformation was determined by using the distance contraints from the Overhauser studies as input for a distance geometry algorithm.

Original languageEnglish (US)
Pages (from-to)319-328
Number of pages10
JournalBiophysical Journal
Volume37
Issue number1
DOIs
StatePublished - Jan 1 1982

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ASJC Scopus subject areas

  • Biophysics

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