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  • Title: Temperature-dependent intermediates in HIV-1 envelope glycoprotein-mediated fusion revealed by inhibitors that target N- and C-terminal helical regions of HIV-1 gp41.
    Author: Gallo SA, Clore GM, Louis JM, Bewley CA, Blumenthal R.
    Journal: Biochemistry; 2004 Jun 29; 43(25):8230-3. PubMed ID: 15209519.
    Abstract:
    Peptides derived from the N- (N-HR) and C- (C-HR) terminal heptad repeat regions adjacent to the fusion peptide and transmembrane domains, respectively, of human immunodeficiency virus (HIV)-1 gp41 inhibit HIV-1 viral envelope glycoproteins (Env)-mediated cell fusion specifically. The mechanism of HIV-1 Env-mediated cell fusion and its inhibition by agents that target the N- and C-HR regions was investigated. Priming experiments with Env-expressing cells indicate that the N-HR region but not the C-HR region is exposed by treatment with sCD4 at 31 degrees C, whereas both the N- and C-HR regions are exposed at 37 degrees C.
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