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A widespread extended arbitrium system controls lysis/lysogeny through antirepression.

Stav Kabel1, Shira Omer Bendori1, Tom Borenstein1

  • 1Shmunis School of Biomedicine and Cancer Research, Faculty of Life Sciences, Tel Aviv University, 6139001 Tel Aviv, Israel.

Cell Host & Microbe
|January 31, 2026
PubMed
Summary

Many Bacillus phages use the arbitrium system for lysis-lysogeny decisions. A newly identified antirepressor protein, AimX, binds the phage repressor AimC, controlling lysis activation and phage life cycle strategies.

Keywords:
Bacillus cereusBacillus subtilisarbitriumcell-cell communicationlysis-lysogeny decisionquorum-sensingtemperate phages

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