Trimeric heptad repeat synthetic peptides HR1 and HR2 efficiently inhibit HIV-1 entry
نویسندگان
چکیده
منابع مشابه
Generation of HIV-1 potent and broad neutralizing antibodies by immunization with postfusion HR1/HR2 complex.
BACKGROUND The envelope glycoproteins are major targets for HIV vaccines. The N-terminal and the C-terminal regions of the gp41 interact to form six helix bundles that are responsible for the fusion between the viral and the target cell membranes. Monoclonal antibodies (Abs) able to disrupt the formation of this complex or to interfere with it could inhibit HIV fusion. Most of the well describe...
متن کاملShort constrained peptides that inhibit HIV-1 entry.
Peptides corresponding to the C-terminal heptad repeat of HIV-1 gp41 (C-peptides) are potent inhibitors of HIV-1 entry into cells. Their mechanism of inhibition involves binding in a helical conformation to the central coiled coil of HIV-1 gp41 in a dominant-negative manner. Short C-peptides, however, have low binding affinity for gp41 and poor inhibitory activity, which creates an obstacle to ...
متن کامل830 Jenwitheesuk
derived from the heptad repeat 2 (HR2) region of HIV1 glycoprotein 41 (gp41). The inhibitor binds to the gp41 heptad repeat 1 (HR1) region, thereby blocking viral HR1/HR2 association. Mutations in HR1 have been reported to cause enfuvirtide resistance and reduce viral fitness. In this study, we first showed that scores obtained by a residue-specific all-atom probability discriminatory function ...
متن کاملThe core of the respiratory syncytial virus fusion protein is a trimeric coiled coil.
Entry into the host cell by enveloped viruses is mediated by fusion (F) or transmembrane glycoproteins. Many of these proteins share a fold comprising a trimer of antiparallel coiled-coil heterodimers, where the heterodimers are formed by two discontinuous heptad repeat motifs within the proteolytically processed chain. The F protein of human respiratory syncytial virus (RSV; the major cause of...
متن کاملHIV-1 adapts to a retrocyclin with cationic amino acid substitutions that reduce fusion efficiency of gp41.
Retrocyclin (RC)-101 is a cationic theta-defensin that inhibits HIV-1 entry. Passaging HIV-1(BAL) under selective pressure by this cyclic minidefensin resulted in only a 5- to 10-fold decrease in viral susceptibility to RC-101. Emergent viral isolates had three amino acid substitutions in their envelope glycoprotein. One was in a CD4-binding region of gp120, and the others were in the heptad re...
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ژورنال
عنوان ژورنال: Bioscience Reports
سال: 2019
ISSN: 0144-8463,1573-4935
DOI: 10.1042/bsr20192196