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The endonuclease group of E colicins are a family of bacterial toxins whose cytotoxic activity in a producing host is inactivated… Expand A novel colicin, designated colicin U, was found in two Shigella boydii strains of serovars 1 and 8. Colicin U was active against… Expand The primary structure of a 3.1-kilobase E6 or E3 segment carrying colicin and related genes was determined. Plasmid ColE6-CT14… Expand The nucleotide sequence of a 2.4 kb Dral‐EcoRV fragment of pColD‐CA23 DNA was determined. The segment of DNA contained the… Expand Colicin E8-J and its immunity protein were characterized with regard to their activities and gene structures. Colicin E8 is a… Expand The properties of 30S ribosomal subunits from untreated and from colicin E3-treated (E3-30S) bacteria have been compared… Expand Various catenated and replicating molecules of colicin E1 isolated from minicells have been identified in regions of neutral… Expand The kinetics of killing of Escherichia coli K-12 by colicin CA42-E2 have been studied, and the data were used to estimate the… Expand Abstract It has previously been demonstrated that bacteria carrying the colicine I factor are more resistant to the lethal effect… Expand