Casein-derived antimicrobial peptides generated by Lactobacillus acidophilus DPC6026

Appl Environ Microbiol. 2006 Mar;72(3):2260-4. doi: 10.1128/AEM.72.3.2260-2264.2006.

Abstract

Three peptides produced by a Lactobacillus acidophilus DPC6026 fermentation of sodium caseinate and showing antibacterial activity against pathogenic strains Enterobacter sakazakii ATCC 12868 and Escherichia coli DPC5063 were characterized. These peptides were all generated from bovine alpha(s1)-casein and identified as IKHQGLPQE, VLNENLLR, and SDIPNPIGSENSEK. These peptides may have bioprotective applicability and potential use in milk-based formula, which has been linked to E. sakazakii infection in neonates.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Anti-Bacterial Agents / chemistry
  • Anti-Bacterial Agents / metabolism*
  • Anti-Bacterial Agents / pharmacology
  • Caseins / chemistry
  • Caseins / metabolism*
  • Cronobacter sakazakii / drug effects
  • Escherichia coli / drug effects
  • Lactobacillus acidophilus / metabolism*
  • Microbial Sensitivity Tests
  • Molecular Sequence Data
  • Peptide Fragments / chemistry
  • Peptide Fragments / metabolism*
  • Peptide Fragments / pharmacology

Substances

  • Anti-Bacterial Agents
  • Caseins
  • Peptide Fragments