Journal
FEBS LETTERS
Volume 569, Issue 1-3, Pages 261-266Publisher
WILEY
DOI: 10.1016/j.febslet.2004.06.006
Keywords
Ebola glycoprotein; viral fusion peptide; peptide-lipid interaction; peptide conformation; protein insertion into membranes; proline
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The structural determinants underlying the functionality of viral internal fusion peptides (IFPs) are not well understood. We have compared EBOwt (GAAIGLAWIPYFGPAAE), representing the IFP of the Ebola fusion protein GP, and EBOmut (GAAIGLAWIPYFGRAAE) derived from a non-functional mutant with conserved Pro537 substituted by Arg. P537R substitution did not abrogate peptide-membrane association, but interfered with the ability to induce bilayer destabilization. Structural determinations suggest that Pro537 is required to preserve a membrane-perturbing local conformation in apolar environments. (C) 2004 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
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