Jérémy Scutenaire, Damien Plassard, Mélody Matelot, Tommaso Villa, Julie Zumsteg, Domenico Libri, Bertrand Séraphin
Nucleic Acids Research, gkac640, https://doi.org/10.1093/nar/gkac640
mRNAs molecules carry information contained in genes to direct the formation of proteins. In specific circumstances, the cellular machinery modifies some mRNAs through the formation of m6A residues. To understand the function of these m6A marks, the authors used the yeast Saccharomyces cerevisiae in which their formation only occurs during meiosis that leads to spore formation.
Characterization of the Pho92 protein that specifically recognizes m6A residues revealed its importance for meiosis. m6A sites bound by Pho92 were identified and shown to be biologically functional. Unexpectedly, Pho92 was found to regulate an early step of meiosis by controlling DNA recombination. Overall, this study provides important clues on the role of m6A residues in mRNAs.