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Site Specific RecA--independent Recombination Between Bacterial Plasmids: Involvement of Palindromes at the Recombinational Loci

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Specialty Science
Date 1975 Apr 1
PMID 1093180
Citations 83
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Abstract

A recA-independent recombinational event is described which results in insertion of an entire plasmid genome at a unique site of another plasmid, and coincident excision of a precisely defined DNA segment originally present at the point of the insertion. The resulting recombinant molecules subsequently can undergo site-specific translocation of their component segments or inversion of their original DNA sequence orientation. The events observed entail nonreciprocal exchange of genetic material, and involve a discrete nucleotide sequences that is duplicated in rotationally symmetrical reverse orientation on plasmid DNA (i.e., inverted repeat; palindrome).

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