A Prob(e)able Route to Lysine Acylation.

Non-enzymatic modification of proteins by acyl-CoA species involved in intermediary metabolism is a possible explanation for widespread protein acylation. In this issue, Kulkarni et al. (2017) develop a set of chemoproteomic probes to interrogate the role of malonyl-CoA in mediating protein malonylation and find malonylation influences glycolysis in cancer cells.

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