Human immunodeficiency virus type 1 Gag-Pol-Env polyproteins (HIV-1 Gag/Pol/Env)

HIV-1 Gag/Pol/Env refers to the three primary polyproteins encoded by the Human Immunodeficiency Virus type 1 genome, which are essential for the viral life cycle. The Gag polyprotein (Pr55) is processed by the viral protease into structural proteins including Matrix (p17), Capsid (p24), and Nucleocapsid (p7), which are critical for viral assembly and core formation [UniProt: P04591]. The Pol polyprotein (Pr160) contains the essential enzymes Reverse Transcriptase, Integrase, and Protease, which facilitate the conversion of viral RNA to DNA, integration into the host genome, and maturation of new virions [UniProt: P03367]. The Env polyprotein (gp160) is cleaved by host cell furin into gp120 and gp41, which mediate viral attachment to CD4 receptors and subsequent membrane fusion [UniProt: P04578]. While most antiretroviral therapies (ART) target specific enzymes within the Pol region, such as reverse transcriptase or integrase, the combination of Gag, Pol, and Env is frequently utilized as a composite target in the development of therapeutic and prophylactic vaccines to elicit broad cellular (T-cell) and humoral (B-cell) immune responses [NIH: HIV.gov]. This target entry is considered 'incorrect' as a single entity because it represents a collection of distinct proteins rather than a single molecular target, though it is a standard grouping in vaccine research and gene therapy [PubMed: PMC3564002].

Other names

HIV-1 structural and enzymatic proteinsGag-Pol-Env complexHIV-1 polyproteinsPr55(Gag)Pr160(Gag-Pol)gp160

Inhibition of viral reverse transcription, integration, or proteolytic processing; blockade of viral entry via gp120/gp41 interference; capsid assembly inhibition; or induction of host immune responses against viral structural and enzymatic components.