Probiotics and Antimicrobial Proteins

, Volume 1, Issue 1, pp 60–66 | Cite as

Streptococcal Bacteriocin-Like Inhibitory Substances: Some Personal Insights into the Bacteriocin-Like Activities Produced by Streptococci Good and Bad

  • John Robert TaggEmail author


The background to the discovery and commercial development of the first Streptococcus salivarius probiotic is documented. A 40-year search of the genus Streptococcus for a harmless natural antagonist of Streptococcus pyogenes had as its operational basis a simple deferred antagonism “fingerprinting” procedure, the application of which results in each tested strain being accorded an inhibitor production (P)-type and inhibitor sensitivity (S)-type profile. Systematic application of this schema has opened a “Pandora’s Box” of novel streptococcal bacteriocin-like inhibitory substances (BLIS). The numerically prominent commensal S. salivarius is proposed to have a pivotal population-modulating role within the oral microbiota of humans. The probiotic strain S. salivarius K12 produces several megaplasmid-encoded BLIS including the lantibiotics salivaricin A and salivaricin B. Strain K12 and other BLIS-producing S. salivarius are currently in use or under development for application to the control of a variety of common maladies and infections of the human oral cavity.


Bacteriocins Bacteriocin-like inhibitory substances BLIS Streptococci Probiotic Lantibiotic 


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Copyright information

© Springer Science + Business Media, LLC 2009

Authors and Affiliations

  1. 1.Department of Microbiology and ImmunologyUniversity of OtagoDunedinNew Zealand

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