Lactococcal 949 group phages recognize a carbohydrate receptor on the host cell surface

Walter Randazzo, Luca Settanni, Jennifer Mahony, Walter Randazzo, Horst Neve, Douwe Van Sinderen

Risultato della ricerca: Article

18 Citazioni (Scopus)

Abstract

Lactococcal bacteriophages represent one of the leading causes of dairy fermentation failure and product inconsistencies. A new member of the lactococcal 949 phage group, named WRP3, was isolated from cheese whey from a Sicilian factory in 2011. The genome sequence of this phage was determined, and it constitutes the largest lactococcal phage genome currently known, at 130,008 bp. Detailed bioinformatic analysis of the genomic region encoding the presumed initiator complex and baseplate of WRP3 has aided in the functional assignment of several open reading frames (ORFs), particularly that for the receptor binding protein required for host recognition. Furthermore, we demonstrate that the 949 phages target cell wall phospho-polysaccharides as their receptors, accounting for the specificity of the interactions of these phages with their lactococcal hosts. Such information may ultimately aid in the identification of strains/strain blends that do not present the necessary saccharidic target for infection by these problematic phages.
Lingua originaleEnglish
pagine (da-a)3299-3305
Numero di pagine7
RivistaApplied and Environmental Microbiology
Volume81
Stato di pubblicazionePublished - 2015

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All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Food Science
  • Applied Microbiology and Biotechnology
  • Ecology

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