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Updated: May 24, 2025

In Vitro Transcribed RNA-based Luciferase Reporter Assay to Study Translation Regulation in Poxvirus-infected Cells
Published on: May 1, 2019
Epitope tags are not created equal: Disruption of cellular function of a translation factor by a short viral tag
Brooke Barker1, Chloe Cannon1, Hannah Umphlett1
1Biochemistry & Molecular Biology, Brody School of Medicine, East Carolina University, Greenville, North Carolina, United States.
Abstract:
Cellular identity and fate are determined by the proteins synthesized. Initiation of mRNA translation requires an important translation factor, eIF4G ( ifg-1 in C. elegans ). Embryos use mRNA translational control for spatial and temporal regulation of protein synthesis. Using CRISPR engineering, we added in-frame epitope and fluorescent tags (V5, Myc, Flag, GFP, and mCherry) to IFG-1 . Tagged forms containing the V5 epitope caused embryonic arrest. Internal disruption of the V5 tag restored viability at 25°C. This study demonstrates that the molecular nature of a small epitope tag is sufficient to disrupt C. elegans embryogenesis.
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