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Target intelligence / Profile preview
HIV-1 envelope glycoprotein (Env)
- Target
- Env
- Molecular classification
- Viral protein, Glycoprotein, Type I transmembrane protein (gp41), Surface glycoprotein (gp120)
01
Overview
The HIV-1 envelope glycoprotein (Env) is a trimeric complex of gp120 and gp41 subunits on the surface of HIV-1 virions. It mediates viral entry into host cells by binding to CD4 and a coreceptor (CCR5 or CXCR4), triggering membrane fusion. Env is the primary target for neutralizing antibodies and vaccine development, but its high variability and glycosylation pose significant challenges.
- Other names
- gp160gp120gp41HIV-1 Env
02
Mechanism of action
Entry inhibitors block viral entry by targeting gp41 (enfuvirtide) or CCR5 (maraviroc). bNAbs block viral entry by binding to conserved epitopes on gp120 and/or gp41.
03
Biological functions
Viral entryCD4 receptor bindingCCR5/CXCR4 coreceptor bindingMembrane fusion
04
Disease associations
HIV-1 infectionAIDS pathogenesis
05
Safety considerations
High sequence variability leading to immune escapeExtensive glycosylation shielding conserved regionsChallenges in eliciting broadly neutralizing antibodies through vaccination
06
Interacting drugs
Entry inhibitors (e.g., enfuvirtide, maraviroc)
1 more in the full profile.
07
Biomarkers
Env sequence variants (tropism, resistance)Neutralization sensitivity to antibodies
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