gene expression ATF4 gene expression by eIF2a ATF4 gene expression by eIF2a is a subtype of gene expression: The process in which a gene sequence is converted into a mature ATF4 gene product or products (proteins or RNA) by eIF2a. Phosphorylation of eIF2-alpha causes increased translation of ATF4 mRNA. In mouse the mRNA of ATF4 contains 2 upstream ORFs (uORFs) (Vattem and Wek 2004). The second uORF overlaps the ORF encoding ATF4 and thus prevents translation of ATF4. When eIF2-alpha is phosphorylated, translation of the uORFs is suppressed and translation of the ORF encoding ATF4 is increased. http://www.reactome.org/PathwayBrowser/#/R-HSA-381119&SEL=R-HSA-381128&PATH=R-HSA-392499