Neutron diffraction studies of amphipathic helices in phospholipid bilayers
- Univ. of Edinburgh (United Kingdom)
- Univ. of Edinburgh Medical School (United Kingdom)
- Brookhaven National Laboratory, Upton, NY (United States)
The structural feature which is thought to facilitate the interaction of many peptides with phospholipid bilayers is the ability to fold into an amphipathic helix. In most cases the exact location and orientation of this helix with respect to the membrane is not known, and may vary with factors such as pH and phospholipid content of the bilayer. The growing interest in this area is stimulated by indications that similar interactions can contribute to the binding of certain hormones to their cell-surface receptors. We have been using the techniques of neutron diffraction from stacked phospholipid bilayers in an attempt to investigate this phenomenon with a number of membrane-active peptides. Here we report some of our findings with three of these: the bee venom melittin; the hormone calcitonin; and a synthetic peptide representing the ion channel fragment of influenza A M2 protein.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- OSTI ID:
- 381083
- Report Number(s):
- LA-UR-96-634; CONF-9410223-; ON: DE96006681; TRN: 96:005198-0016
- Resource Relation:
- Conference: 3. conference on neutrons in biology, Santa Fe, NM (United States), 24-28 Oct 1994; Other Information: PBD: [1994]; Related Information: Is Part Of Proceedings of the neutrons in biology conference, Santa Fe, NM, October 1994; Schoenborn, B.P.; PB: 354 p.
- Country of Publication:
- United States
- Language:
- English
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