Eukaryotic Translation Initiation Factor 5A (eIF5A) Regulates Mitochondrial Protein Import by Alleviating Ribosome Stalling at the TIM50 Translocase mRNA
Eukaryotic translation initiation factor 5A (eIF5A) is essential for alleviating ribosome stalling at the polyproline-rich region of the TIM50 mRNA, which encodes a key receptor subunit of the mitochondrial inner membrane translocase. Depletion of eIF5A leads to reduced Tim50 protein levels, compromised mitochondrial protein import, and activation of the mitochondrial protein import stress response.