Human immunodeficiency virus type 1 Gag polyprotein, Human immunodeficiency virus type 1 Pol polyprotein, Human immunodeficiency virus type 1 Env polyprotein (Gag, Pol, Env)

HIV-1 Gag, Pol, and Env polyproteins are the primary structural and enzymatic proteins encoded by the HIV-1 genome, serving essential roles in viral assembly, replication, and host infection. Gag is processed to form the virion's matrix, capsid, nucleocapsid, and associated spacer peptides, governing assembly and budding at the host cell membrane[1][2][4]. Pol encodes the viral enzymes—protease (PR), reverse transcriptase (RT), and integrase (IN)—required for maturation, reverse transcription of RNA to DNA, and integration of viral DNA into the host genome[2][4]. Env is synthesized as gp160 and processed into surface glycoprotein gp120 and transmembrane subunit gp41, which mediate viral binding to and fusion with host cells using CD4 and co-receptors[2][4]. All three polyproteins are crucial for the production of infectious HIV-1 particles and represent validated therapeutic targets, with many approved antiretroviral drugs and vaccine efforts directed at their functions and interactions[1][2][4][5].

Other names

group-specific antigenviral polymeraseenvelope glycoproteingp160gp120gp41

Inhibition of proteolytic cleavage (Gag/Pol maturation inhibitors); Inhibition of viral enzyme function (protease, RT, integrase inhibitors); Blockade of viral entry/fusion or antibody-dependent neutralization (Env-targeted therapies)