Particularly sensitive to chemical modifications, mRNAs are molecules responsible for transmitting the information encoded in our genome, allowing for the synthesis of proteins. Two teams have focused on a specific type of chemical modification - called methylation - of mRNA molecules in the small worm Caenorhabditis elegans. They found that methylation on a particular sequence of an mRNA leads to its degradation and that this control mechanism depends on the worm's diet.
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