arbitrium widespread

You may recall reading about the discovery of arbitrium, a peptide produced by Bacillus phages to regulate lysogeny decisions. A new paper by Avigail Stokar-Avihail and colleagues in the Sorek lab at the Weizmann Institute has shown that arbitrium-like systems are widespread in phages! What's more, they're frequently located on mobile pathogenicity elements, and seem to be controlled by anti-sense RNA.