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Listeriolysin O (LLO) is an essential determinant of Listeria monocytogenes pathogenesis that mediates the escape of L. monocytogenes from host cell vacuoles, thereby allowing replication in the cytosol without causing appreciable cell death. As a member of the cholesterol‐dependent cytolysin (CDC) family of pore‐forming toxins, LLO is unique in that it is secreted by a facultative intracellular pathogen,...
Cyclic diadenosine monophosphate (c‐di‐AMP) is a conserved nucleotide second messenger critical for bacterial growth and resistance to cell wall‐active antibiotics. In Listeria monocytogenes, the sole diadenylate cyclase, DacA, is essential in rich, but not synthetic media and ΔdacA mutants are highly sensitive to the β‐lactam antibiotic cefuroxime. In this study, loss of function mutations in the...
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