title: Bacteriocin-like activity production and resistance in selected enterococci and streptococci of animal origin.
abstract: Antimicrobial proteins and peptides produced by bacteria, termed bacteriocins, are widely acknowledged to be important contributors to their producer organism survival. Enterocin A, enterocin B, enterocin P and enterolysin A belong to the best studied enterocins, i.e., bacteriocins produced by enterococci and streptococci. Twenty-one enterococcal and seven streptococcal isolates were analysed for bacteriocin-like activity production and resistance by overlay test. Up to 50% of tested strains showed antibacterial activity at least against one indicator strain. The occurrence of enterocin B structural gene in several isolates was confirmed by PCR method. The results of this study should broaden knowledge of bacteriocin-like activity production and resistance among gram-positive bacteria.
authors.affiliation: Institute of Animal Physiology, Slovak Academy of Sciences, Kosice, Slovak Republic.
authors.forename: Katarína
authors.initials: K
authors.lastname: Nigútová
authors.forename: Peter
authors.initials: P
authors.lastname: Pristas
authors.forename: Peter
authors.initials: P
authors.lastname: Javorský
mesh_terms: D000818:Animals; D001430:Bacteriocins / Q000096:biosynthesis* / Q000494:pharmacology; D004269:DNA, Bacterial / Q000032:analysis*; D024881:Drug Resistance, Bacterial; D016983:Enterococcus / Q000187:drug effects / Q000378:metabolism; D041981:Gastrointestinal Tract / Q000382:microbiology; D008826:Microbial Sensitivity Tests; D016133:Polymerase Chain Reaction; D013291:Streptococcus / Q000187:drug effects / Q000378:metabolism
chemical_list: D001430:Bacteriocins; D004269:DNA, Bacterial