Purification and Characterization of a Novel Class IIa Bacteriocin , Piscicocin CS 526 , from Surimi-Associated Carnobacterium piscicola CS 526

The bacteriocin piscicocin CS526 was inactivated by proteolytic enzymes, was stable at 100°C for 30 min, had a pH range of 2 to 8, and was active against Enterococcus, Listeria, Pediococcus, and Leuconostoc. The N-terminal sequence was YGNGL, not the YGNGV consensus motif common in class IIa bacteriocins (alternate residues underlined). The molecular mass of piscicocin CS526, which had a bactericidal mode of action, was 4,430 Da.

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