Figure 2.

(A) Alignment of sequences of two nonsymbiotic strains CJ4 (AF049244) and CJ7 (AF049245) at the site of insertion. The phe-tRNA gene is marked in yellow and homologous flanking sequences are marked in blue. A phe-tRNA sequence from Neisseria gonorrhoeae (U82700) is included for comparison. (B) Alignment of sequences of six symbiotic strains at the left junction. Identical nucleotides upstream of the element are marked in blue, the phe-tRNA gene is marked in yellow, and the adjoining element DNA is in brown. (C) Alignment of sequences of six symbiotic strains at the right junction. Element sequence is marked in brown and the 17 nucleotides of the 3′ end of the phe-tRNA are marked in yellow. The three homology groups beyond the junction are indicated by like colors.