Oxidative stress induces coordinated remodeling of RNA-enzyme interactions

RNA-binding proteins (RBPs) are key post-transcriptional regulators that play a substantial role during stress adaptation. Recent proteome-wide surveys have uncovered a large number of new and unconventional'' RBPs such as metabolic enzymes, yet little is known about the reconfiguration of the RNA-binding proteome (RBPome) and RNA-enzyme interactions in response to cellular stress. Here, we applied RNA-interactome capture to monitor the dynamics of the mRBPome upon mild oxidative stress in the yeast Saccharomyces cerevisiae. Among the 257 proteins that significantly changed RNA associations, we observed the coordinated remodeling of RNA-binding enzymes - particularly of the central carbon metabolism - that complemented known metabolic responses. Furthermore, we recognized the propensity for paralogous specific alterations of enzyme-RNA interactions. Our results suggest coordinated cross talk between RNA-enzyme interactions and intermediary metabolism to maintain the physiological and molecular balance upon oxidative stress, perhaps through specialization of paralogous during evolution.

Automated summary

RNA-binding proteins (RBPs) play a substantial role in post-transcriptional regulation during stress adaptation. Recent studies have revealed the reconfiguration of the RNA-binding proteome (RBPome) and RNA-enzyme interactions in response to cellular stress, showing coordinated remodeling of RNA-binding enzymes, particularly in central carbon metabolism, and paralogous specific alterations of enzyme-RNA interactions. The results suggest a coordinated cross talk between RNA-enzyme interactions and intermediary metabolism to maintain physiological and molecular balance under oxidative stress, possibly through specialization of paralogous genes during evolution.