Hepatitis E Virus Protease Inhibits the Activity of Eukaryotic Initiation Factor 2-Alpha Kinase 4 and Promotes Virus Survival.

ABSTRACT: Multiple mechanisms exist in a cell to cope with stress. Four independent stress-sensing kinases constitute the integrated stress response machinery of the mammalian cell, and they sense the stress signals and act by phosphorylating the eukaryotic initiation factor 2α (eIF2α) to arrest cellular translation. Eukaryotic initiation factor 2 alpha kinase 4 (eIF2AK4) is one of the four kinases and is activated under conditions of amino acid starvation, UV radiation, or RNA virus infection, resulting in shutdown of global translation. An earlier study in our laboratory constructed the protein interaction network of the hepatitis E virus (HEV) and identified eIF2AK4 as a host interaction partner of the genotype 1 (g1) HEV protease (PCP). Here, we report that PCP's association with the eIF2AK4 res

SUBMITTER: Kumar A 

PROVIDER: S-EPMC10308950 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature