The bacteriophage lambda attachment site in wild strains of Escherichia coli.

Abstract excerpt

The attachment site (attlambda) of bacteriophage lambda was examined in wild strains of Escherichia coli. Although the att region is non-coding, the DNA sequence was invariant in the 13 strains examined. Two other non-coding regions showed nine changes, all associated with a single strain. In four of 33 strains, sequences were inserted in or near the attlambda site and in two of these the insert was related to...

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