In an article published in the journal Nature Communication, LOB scientists have just surprisingly suggested the existence of gene transfer from bacteria to eukaryotes. This discovery is based on the study of thymidylate synthase, an enzyme necessary for the de novo synthesis of DNA. These observations provided new insight into the evolution of DNA by suggesting that the metabolic capacity of modern eukaryotes to synthesize DNA could also come from bacteria and not only from archaea as assumed so far.