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Title

A flagellin-producing Lactococcusstrain: Interactions with mucin and enteropathogens

AuthorsSánchez García, Borja ; López, Patricia ; González Rodríguez, Irene ; Suárez, Ana; Margolles Barros, Abelardo ; Urdaci, María C.
Issue DateMay-2011
PublisherBlackwell Publishing
CitationFEMS Microbiology Letters 318(2): 101-107 (2011)
AbstractBacillus cereus CH is a probiotic strain used in human nutrition whose adhesion to mucin is dependent on its surface-associated flagellin. Flagellins from the surface of several probiotic Bacillus strains were efficiently extracted with 5M LiCl and identified by peptide fingerprinting. Based on the proteomic analysis, cloning of the gene coding for the flagellin of B. cereus CH was performed in the lactococcal vector pNZ8110 under the control of a nisin-inducible promoter. The resulting strain, Lactococcus lactis CH, produced a surface-associated flagellin after 6h of induction with nisin. The recombinant Lactococcus strain adhered strongly to mucin-coated polystyrene plates, whilst inhibiting competitively the adhesion of the pathogens Escherichia coli LMG2092 and Salmonella enterica ssp. enterica LMG15860 to the same molecule. Strain CH could be used in further experimentation for the characterization of the molecular mechanism of action of this probiotic B. cereus CH flagellin. © 2011 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd.
URIhttp://hdl.handle.net/10261/78379
DOI10.1111/j.1574-6968.2011.02244.x
Identifiersdoi: 10.1111/j.1574-6968.2011.02244.x
issn: 0378-1097
e-issn: 1574-6968
Appears in Collections:(IPLA) Artículos
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