Abstract

Serine Incorporators (Serinc) are promising HIV therapeutic targets because of their ability to impair virus-target cell fusion. These all alpha-helical membrane proteins contain ten transmembrane segments, have limited extra-membranous domains, and are conserved in all eukaryotes. Human Serinc5 and Serinc3 inhibit HIV infectivity by impairing virus-target cell fusion through a proposed interaction with the HIV Env glycoprotein. However, Nef, an HIV auxiliary protein, counteracts Serinc's inhibition of membrane fusion by targeting it for degradation via clathrin-mediated endocytosis.

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