Target intelligence / Profile preview

Envelope Glycoprotein 120 (HIV-1) (gp120)

Target: gp120
Molecular classification: Glycoprotein, Viral Envelope Protein

Overview

Envelope glycoprotein 120 (gp120) is a surface-exposed glycoprotein of the human immunodeficiency virus type 1 (HIV-1). It is essential for viral entry into host cells, mediating attachment to specific cell surface receptors (CD4 and CCR5 or CXCR4) and initiating the fusion process required for infection. It is a challenging vaccine target due to its heavy glycosylation, structural flexibility, and conformational masking.

Mechanism of action

Target of neutralizing antibodies; involved in viral entry, thus drugs could target its interaction with CD4 or co-receptors.

Biological functions

Viral entry into host cellsCD4 receptor bindingCCR5/CXCR4 co-receptor engagementMembrane fusion

Disease associations

InfectionHIV-1 pathogenesisAIDS

Safety considerations

High variability and glycosylation make it difficult to target with drugs or vaccines.Conformational masking further complicates immune recognition.

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