Abstract
Shorter analogues of a continuous epitope of hepatitis A virus, VP3(110-121) peptide, failed to react with convalescent sera, indicating the importance of the entire peptide in the epitope structure. To better understand the influence of the structural properties of the 12-mer peptide epitope on its biological activity, the interaction of smaller peptide analogues with phospholipid biomembrane models was investigated by a combination of spectroscopic and biophysical techniques. In this article we describe our findings concerning the surface activity and the interaction of peptides with simple mono- and bilayer membranes composed of a zwitterionic phospholipid (dipalmitoyl phosphatidylcholine, DPPC), an anionic phospholipid (dipalmitoyl phosphatidylglicerol, DPPG), or a DPPC/DPPG mixture. The results indicate that the net negative charge of the peptide is in some way responsible of the specific interactions between VP3(110-121) and membrane phospholipids, and necessary to induce β-type conformations upon vesicle interaction.
Original language | English |
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Pages (from-to) | 477-488 |
Number of pages | 12 |
Journal | Biopolymers |
Volume | 54 |
Issue number | 7 |
DOIs | |
Publication status | Published - Dec 2000 |
Externally published | Yes |
Keywords
- Biomembrane models
- CD
- Fluorescence
- Hepatitis A virus
- Monolayers
- Synthetic peptides