FIG. 3.

Alignment of the partial sequences of the purHD regions from S. suis reference strains and DAT1. The sequences are aligned bidirectionally from the purH and purD regions (lower sequences), and the extra portions are shown in the upper alignment and are connected by the lines with the lower sequences. Strains are indicated to the left of the sequences; reference strains are referred to as S plus the serotype number. Numbers of nucleotides not appearing in the upper alignment are indicated in white type in black parallelograms. Dots, nucleotides identical to those of the aligned sequence of DAT1; dashes, gaps in the aligned sequences; boxes, stop and start codons of the genes appearing in the sequences.