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The antimicrobial peptide Enterocin CRL35, a class II bacteriocin, produces at high concentrations (8 microg ml(-1)) localized holes in the wall and cellular membrane of Listeria monocytogenes, reflected in the efflux of macromolecules such as proteins and other ultraviolet-absorbing materials. At lower concentrations (0.5 microg ml(-1)), neither ultra structural changes nor macromolecules efflux were observed, however potassium and phosphate ions were released, dissipating the proton motive force. As a result the bacteria were killed.
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Minahk et al. (2000) studied this question.
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