STUDIES ON GROUP-A (PHAGE TAIL) BACTERIOCINS OF SERRATIA-MARCESCENS .6. CALCIUM ION-DEPENDENT BIOLOGICAL-ACTIVITY OF SUBGROUP-2 BACTERIOCINS

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  • 1 January 1976
    • journal article
    • research article
    • Vol. 234  (4) , 528-535
Abstract
The biological activity of subgroup II group A (phage tail) bacteriocins of S. marcescens against susceptible indicator cells was completely abolished on 2-defined, agarose-containing media. The addition of 0.002 M CaCl2 to these 2 media fully restored the lethal activity of these phage tails. Subgroup I phage tail bacteriocins, had no requirement for divalent cations. These observations are an additional biological criterion for the differentiation of subgroup I and II phage tail bacteriocins of S. marcescens.

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