“…Interestingly, Mu is the most efficient transposable element known (Mizuuchi, 1983;Walker and Harshey, 2020) and can infect and lyse several hosts (Escherichia coli, Shigella sonnei, Citrobacter freundii, Erwinia, and Enterobacter) (Paolozzi and Ghelardini, 2006). Moreover, Mu-like phages were discovered in a wide range of Gramnegative and Gram-positive bacteria (Hull et al, 1978;Hayashi et al, 2001;Toussaint, 2013).…”