Abstract
The HIV-1 gp41 envelope glycoprotein promotes fusion of the virus and cell membranes through the formation of a trimer-of-hairpins structure, in which the amino- and carboxyl-terminal regions of the gp41 ectodomain are brought together. Synthetic peptides derived from these two regions (called N and C peptides, respectively) inhibit HIV-1 entry. In contrast to C peptides, which inhibit in the nanomolar range, N peptides are weak inhibitors with IC 50 values in the micromolar range. To test the hypothesis that the weak inhibition of N peptides results from their tendency to aggregate, we have constructed chimeric variants of the N-peptide region of gp41 in which soluble trimeric coiled coils are fused to portions of the gp41 N peptide. These molecules, which present the N peptide in a trimeric coiled-coil conformation, are remarkably more potent inhibitors than the N peptides themselves and likely target the carboxyl-terminal region of the gp41 ectodomain. The best inhibitors described here inhibit HIV-1 entry at nanomolar concentrations.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 10:34 a.m.) |
Deposited | 3 years, 4 months ago (April 13, 2022, 6:56 a.m.) |
Indexed | 40 minutes ago (Aug. 30, 2025, 6:22 a.m.) |
Issued | 23 years, 11 months ago (Sept. 25, 2001) |
Published | 23 years, 11 months ago (Sept. 25, 2001) |
Published Online | 23 years, 11 months ago (Sept. 25, 2001) |
Published Print | 23 years, 11 months ago (Sept. 25, 2001) |
@article{Eckert_2001, title={Design of potent inhibitors of HIV-1 entry from the gp41 N-peptide region}, volume={98}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.201392898}, DOI={10.1073/pnas.201392898}, number={20}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Eckert, Debra M. and Kim, Peter S.}, year={2001}, month=sep, pages={11187–11192} }