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Presented By: Center for RNA Biomedicine

RNA Innovation Seminar: Polly Hsu, Michigan State University

"Roadblocks on mRNAs? Gene Expression Regulation by Upstream Open Reading Frames in Plants"

Polly Hsu, Michigan State University Polly Hsu, Michigan State University
Polly Hsu, Michigan State University
Polly Hsu, Ph.D.
Assistant Professor
Biochemistry and Molecular Biology
Michigan State University

Keywords: translation, uORFs, nonsense-mediated decay

Abstract: 30-70% of mRNAs in humans, mice and plants contain short ORFs, called upstream ORFs (uORFs), in their 5’ leader sequences. The translation of uORFs is expected to repress the protein synthesis of their downstream main ORF (mORF) and to trigger mRNA degradation, presumably through nonsense-mediated decay (NMD). I will share our current progress investigating the global and gene-specific mechanisms by which uORFs regulate gene expression in Arabidopsis and tomato. I will discuss 1) different classes of uORFs revealed by Ribo-seq, 2) the roles of uORFs on transcription factor and protein kinase genes, 3) the mRNA stability of uORF-containing genes, and 4) cellular regulatory mechanisms to include or avoid uORFs on mRNA sequences.

HYBRID SEMINAR:
In-person: BSRB, ABC seminar rooms
zoom option: https://umich.zoom.us/webinar/register/WN_04eu5WLkS56ZK169pLUFdg
Polly Hsu, Michigan State University Polly Hsu, Michigan State University
Polly Hsu, Michigan State University

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