Formation of Φ80 hybrids also depend on phage recombinase.

<p>A: map of the 300 bp region of 96% identity between the Φ80 region near attP site and <i>E. coli</i> gene <i>yecD</i>. B: Map of the 980 bp homology region between Dlp12 and Φ80, spanning through the essential terminase genes <i>A</i> and <i>nu1</i>. C: Highly divergent 500 bp homology region between the non-essential nin region of Φ80 and Dlp12. D: Frequency of recombinants for each homology region, as a function of Redβ and RecA (genotypes are indicated below the bars). Mean ± standard deviation of at least 3 independent recombination assays are indicated.