Prophage induction in Lactococcus lactis by the bacteriocin Lactococcin 972
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منابع مشابه
Prophage induction in Lactococcus lactis by the bacteriocin Lactococcin 972.
Lactococcin 972 (Lcn972) is a non-pore forming bacteriocin with a narrow spectrum of activity restricted to Lactococcus. Lcn972 inhibits the incorporation of cell wall precursors in the septum area, thereby inhibiting cell division. In this work, an additional inhibitory effect is described, namely, the induction of the lytic cycle of resident prophages in the lysogenic strain L. lactis IPLA 51...
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Synthesis of lactococcin 972 is plasmid-encoded. An operon composed of two genes that encode pre-bacteriocin and a putative immunity protein has been identified. The first gene encodes a 91-residue polypeptide that is exported via a sec-dependent system to give the mature 66-aa bacteriocin. The immunity protein is a 563-residue polypeptide with seven potential transmembrane domains. Two transcr...
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Proteinases and bacteriocins are of great importance to the dairy industry, but their interactions have not been studied so far. Lactococcus lactis subsp. lactis BGMN1-5 is a natural isolate from homemade semi-hard cheese which produces two bacteriocins (Lactococcin B and LsbB), as well as proteinase PrtP. A medium-dependent increase in the bacteriocin LcnB activity of L. lactis BGMN1-501, a de...
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A novel bacteriocin, lactococcin MMFII, produced by Lactococcus lactis MMFII isolated from a Tunisian dairy product had been identified. The bacteriocin was purified to homogeneity from fresh overnight M17 broth culture by sulfate ammonium precipitation, cation-exchange chromatography, sep-pack chromatography and two steps of reverse-phase chromatography. The purified bacteriocin was heat stabl...
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ژورنال
عنوان ژورنال: International Journal of Food Microbiology
سال: 2009
ISSN: 0168-1605
DOI: 10.1016/j.ijfoodmicro.2008.11.004