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Global regulator of mRNA editing found
Date:2/6/2014

An international team of researchers, led by scientists from the University of California, San Diego School of Medicine and Indiana University, have identified a protein that broadly regulates how genetic information transcribed from DNA to messenger RNA (mRNA) is processed and ultimately translated into the myriad of proteins necessary for life.

The findings, published today in the journal Cell Reports, help explain how a relatively limited number of genes can provide versatile instructions for making thousands of different messenger RNAs and proteins used by cells in species ranging from sea anemones to humans. In clinical terms, the research might also help researchers parse the underlying genetic mechanisms of diverse diseases, perhaps revealing new therapeutic targets.

"Problems with RNA editing show up in many human diseases, including those of neurodegeneration, cancer and blood disorders," said Gene Yeo, PhD, assistant professor in the Department of Cellular and Molecular Medicine at UC San Diego. "This is the first time that a single protein has been identified that broadly regulates RNA editing. There are probably hundreds more. Our approach provides a method to screen for them and opens up new ways to study human biology and disease."

"To be properly expressed, all genes must be carefully converted from DNA to messenger RNA, which can then be translated into working proteins," said Heather Hundley, PhD, assistant professor of biochemistry and molecular biology at Indiana University and co-senior author of the study. RNA editing alters nucleotides (the building blocks of DNA and RNA) within the mRNA to allow a single gene to create multiple mRNAs that are subject to different modes of regulation. How exactly this process can be modulated, however, has never been clear.

Using the nematode Caenorhabditis elegans as their model organism and a novel computational framework, Hundley, Yeo and colleagues ide
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Contact: Scott LaFee
slafee@ucsd.edu
619-543-6163
University of California - San Diego
Source:Eurekalert  

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