Abstract
Post-translational modifications (PTMs) play a pivotal role in expanding functional protein diversity. During viral infection, pathogen-associated molecular patterns derived from viruses are recognized by pattern recognition receptors present in the membrane surface and the cytoplasm of infected cells, which subsequently induces the antiviral innate immunity to protect the host from the invading viruses. Fatty acylation modification is identified as a post-translation lipid modification process. Mounting evidence is presented that lipid modification functions as a novel regulatory mechanism of antiviral innate immunity. In mammalian cells, DHHC (Asp-His-His-Cys) domain is indispensable for most of the palmitoylation modification, which belongs to fatty acylation. ZDHHC family proteins are composed of 23 members in human cells. In this review, we will summarize the recent findings of the regulatory mechanism of the palmitoylation in the process of host antiviral innate immunity against viruses.
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