title: Characterization and heterologous expression of a class IIa bacteriocin, plantaricin 423 from Lactobacillus plantarum 423, in Saccharomyces cerevisiae.
abstract: Lactobacillus plantarum 423 produces a small heat-stable antimicrobial protein designated plantaricin 423. This protein is bactericidal for many Gram-positive foodborne pathogens and spoilage bacteria, including Listeria spp., Staphylococcus spp., Pediococcus spp., Lactobacillus spp., etc. The DNA sequence of the plantaricin 423-encoding region on plasmid pPLA4 revealed a four open reading frame (ORF) operon structure similar to pediocin PA-1/AcH from Pediococcus acidilactici and coagulin from Bacillus coagulans I(4). The first ORF, plaA, encodes a 56-amino acid prepeptide consisting of a 37-amino acid mature molecule, with a 19-amino acid N-terminal leader peptide. The second ORF, plaB, encodes a putative immunity protein with protein sequence similarities to several bacteriocin immunity proteins. The plaC and plaD genes are virtually identical to pedC and pedD of the pediocin PA-1 operon, as well as coaC and coaD of the coagulin operon. Plantaricin 423 was cloned on a shuttle vector under the control of a yeast promoter and heterologously produced in Saccharomyces cerevisiae.
authors.affiliation: Department of Microbiology, University of Stellenbosch, J.C. Smuts Building, Block A De Beer Avenue, 7600, Stellenbosch, South Africa.
authors.forename: C A
authors.initials: CA
authors.lastname: Van Reenen
authors.forename: M L
authors.initials: ML
authors.lastname: Chikindas
authors.forename: W H
authors.initials: WH
authors.lastname: Van Zyl
authors.forename: L M T
authors.initials: LM
authors.lastname: Dicks
mesh_terms: D000595:Amino Acid Sequence; D001430:Bacteriocins / Q000737:chemistry* / Q000235:genetics* / Q000302:isolation & purification; D001483:Base Sequence; D004269:DNA, Bacterial / Q000737:chemistry; D007778:Lactobacillus / Q000378:metabolism*; D008969:Molecular Sequence Data; D016366:Open Reading Frames; D010957:Plasmids; D012441:Saccharomyces cerevisiae / Q000378:metabolism; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D001430:Bacteriocins; D004269:DNA, Bacterial; C471833:plantaricin 423