RNA helicase A is necessary for translation of selected messenger RNAs

Tiffiney Roberts Hartman, Shuiming Qian, Cheryl Bolinger, Soledad Fernandez, Daniel R. Schoenberg, Kathleen Boris-Lawrie

Research output: Contribution to journalArticlepeer-review

147 Scopus citations

Abstract

RNA helicase A (RHA) is a highly conserved DEAD-box protein that activates transcription, modulates RNA splicing and binds the nuclear pore complex. The life cycle of typical mRNA involves RNA processing and translation after ribosome scanning of a relatively unstructured 5′ untranslated region (UTR). The precursor RNAs of retroviruses and selected cellular genes harbor a complex 5′ UTR and use a yet-to-be-identified host post-transcriptional effector to stimulate efficient translation. Here we show that RHA recognizes a structured 5′-terminal post-transcriptional control element (PCE) of a retrovirus and the JUND growth-control gene. RHA interacts with PCE RNA in the nucleus and cytoplasm, facilitates polyribosome association and is necessary for its efficient translation. Our results reveal a previously unidentified role for RHA in translation and implicate RHA as an integrative effector in the continuum of gene expression from transcription to translation.

Original languageEnglish (US)
Pages (from-to)509-516
Number of pages8
JournalNature Structural and Molecular Biology
Volume13
Issue number6
DOIs
StatePublished - Jun 26 2006

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