FIG. 3.

Alignment of one representative of each group-specific sequence of the omlA genes of the reference serotypes of A. pleuropneumoniae biovar 1. Serotype (SEROTYP) 1 represents the homologous omlA genes of A. pleuropneumoniae serotypes 1, 9, 11, and 12. Serotype 2 represents a separate group of its own. Serotype 3 represents serotypes 3, 4, 6, 7, and 8. Serotypes 5a, 5b, and 10 are represented by the sequence of serotype 5a. The dots represent sequence identity with the sequence of serotype 1; the dashes represent deletions. The positions of the sequences were calculated from the published omlA gene region (9) of an A. pleuropneumoniae strain of serotype 1. The schematic positions of the sequenced regions are shown in Fig. 1. Nucleotide 1 corresponds to nucleotide 158, and nucleotide 1120 corresponds to nucleotide 1255 of the published omlA gene sequence (9).