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circular bacteriocin, circularin A/uberolysin family Circular bacteriocins are antibiotic proteins made by ribosomal translation of a precursor molecular, followed by cleavage and circularization. Members of this subclass of the circular bacteriocins include circularin A from Clostridium beijerinckii, bacteriocin AS-48 from Enterococcus faecalis, uberolysin from Streptococcus uberis, and carnocyclin A from Carnobacterium maltaromaticum. The mature circularized peptides average about 70 amino acids in size. [Cellular processes, Toxin production and resistance]
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