Ability of cecropin B to penetrate the enterobacterial outer membrane.

  title={Ability of cecropin B to penetrate the enterobacterial outer membrane.},
  author={Martti Vaara and Timo Vaara},
  journal={Antimicrobial agents and chemotherapy},
  volume={38 10},
The cationic amphipathic insect peptide cecropin B was almost as active on wild-type enteric bacteria as it was on their lipopolysaccharide and lipid A mutants that have very defective outer membrane. The polymyxin-resistant strains, which elaborate altered, less anionic lipopolysaccharide, were completely susceptible to cecropin B. No synergism was found between cecropin B and hydrophobic antibiotics. Throughout the study, the activity of cecropin B resembled that of quaternary detergents. 

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