Translational regulation of Chk1 expression by eIF3a via interaction with the RNA-binding protein HuR

eIF3a is a putative subunit of the eukaryotic translation initiation factor 3 complex. Accumulating evidence suggests that eIF3a may have a translational regulatory function by suppressing translation of a subset of mRNAs while accelerating that of other mRNAs. Albeit the suppression of mRNA translation may derive from eIF3a binding to the 5′-UTRs of target mRNAs, how eIF3a may accelerate mRNA translation remains unknown. In this study, we show...