.... 2014; Wolfe et al. 2014; Modelska et al. 2015). In yeast, Ded1 (the ortholog of DDX3X in mammals), rather than EIF4A, seems to act as a major helicase that resolves secondary 5′ UTR structures (Sen et al. 2015). Accordingly, in yeast, changes in EIF4A activity uniformly affect translation of most mRNAs...