FIG. 1.

Schematic representation of the AaΦ23 genome. ORFs are numbered consecutively from left to right and indicated by arrows pointing in the direction of transcription. Putative functions are indicated. Filled boxes with diagonal, vertical, and zigzag lines indicate regions of homology to the genome of A. actinomycetemcomitans strain HK1651, the H. influenzae φflu prophage, and the X. fastidiosa Xfp3/Xfp4 prophages, respectively. Rho-independent terminators and promoters are highlighted by hairpins and small black arrows, respectively. The −1 ORF (orf54′) is represented by a black arrow.