4.7 Article

The antimicrobial peptide polyphemusin localizes to the cytoplasm of Escherichia coli following treatment

Journal

ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
Volume 50, Issue 4, Pages 1522-1524

Publisher

AMER SOC MICROBIOLOGY
DOI: 10.1128/AAC.50.4.1522-1524.2006

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The horseshoe crab peptide polyphemusin I possesses high antimicrobial activity, but its mechanism of action is as yet not well defined. Using a biotin-labeled polyphemusin I analogue and confocal fluorescence microscopy, we showed that the peptide accumulates in the cytoplasm of wild-type Escherichia coli within 30 min after addition without causing substantial membrane damage.

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