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  • Title: Envelope alteration of Escherichia coli HB101 carrying pEAP31 caused by Kil peptide and its involvement in the extracellular release of periplasmic penicillinase from an alkaliphilic Bacillus.
    Author: Aono R.
    Journal: Biochem J; 1991 May 01; 275 ( Pt 3)(Pt 3):545-53. PubMed ID: 1903920.
    Abstract:
    The plasmid pEAP31 contains the colicin E1 kil gene. Peptidoglycan and outer-membrane components (lipopoly-saccharide, proteins and phosphatidylethanolamine) decreased concurrently in the envelope fraction from Escherichia coli HB101 carrying pEAP31 during the stationary phase of growth. At almost the same time. D-alanine residues in peptidoglycan decreased. The Kil peptide is suggested to affect, directly or indirectly, the turnover of peptidoglycan in stationary phase and, as a result, to cause partial exfoliation of the outer membrane. Periplasmic proteins are liberated from E. coli HB101 (pEAP31) probably because of the exfoliation of outer membrane.
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