BacteriocinsGenes, BacterialGenesPediococcusLactobacillusMolecular Sequence DataBase SequenceAmino Acid SequenceCloning, MolecularPlasmidsEscherichia coliDNA, BacterialNisinListeriaBacterial ProteinsOperonLactococcus lactisLactococcusMutationLactobacillaceaeEnterococcus faecalisLactobacillus acidophilusGram-Positive Asporogenous RodsGenes, RegulatorRestriction MappingEnterococcus faeciumGene Expression Regulation, BacterialSerratia marcescensPropionibacterium