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Eliyahu E, et al.  (2012) The protein chaperone Ssa1 affects mRNA localization to the mitochondria. FEBS Lett 586(1):64-9

Abstract: Many nuclear-transcribed mRNAs encoding mitochondrial proteins are localized near the mitochondrial outer membrane. A yet unresolved question is whether protein synthesis is important for transport of these mRNAs to their destination. Herein we present a connection between mRNA localization in yeast and the protein chaperone Ssa1. Ssa1 depletion lowered mRNA association with mitochondria while its overexpression increased it. A genome-wide analysis revealed that Ssa proteins preferentially affect mRNAs encoding hydrophobic proteins, which are expected targets for these protein chaperones. Importantly, deletion of the mitochondrial receptor Tom70 abolished the impact of Ssa1 overexpression on mRNAs encoding Tom70 targets. Taken together, our results suggest a role for Ssa1 in mediating localization of nascent peptide-ribosome-mRNA complexes to the mitochondria, consistent with a co-translational transport process.

Status: Published Type: Journal Article PubMed ID: 22138184

Topics addressed in this paper

Number of different genes curated to this paper: 14

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Topics Genes linked to topics (#1 - 10 )
ACO1 ADH3 ADY2 ATP2 CCP1 CYB2 IDH1 POR1 SSA1 SSA2
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Topics Genes linked to topics (#11 - 14 )
SSA3 SSA4 TIM23 TOM70
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Cellular Location blue ball
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