Liposome destabilization induced by the HIV-1 fusion peptide effect of a single amino acid substitution.
FEBS Letters (1995)
- PubMed: 7720880
Available from www.ncbi.nlm.nih.gov
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Abstract
The 23-residue synthetic peptide representing the N-terminus of HIV-1 gp41 is known to induce either leakage or fusion of lipid vesicles depending on the experimental conditions. In this paper we report that a polar amino acid substitution V->E at position 2, known to block gp41 activity in vivo, makes the peptide unable to destabilize and/or fuse membranes. Moreover this variant, unlike the parent peptide, is never found in the membrane-associated beta conformation.
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