FIG. 3.

Structures of the wlb locus in B. pertussis (top) and in B. bronchiseptica (bottom) (1, 2). Grey arrows identify genes for which the DNA sequence is available; e.g., in the case of B. bronchiseptica, only the wlbH gene has been sequenced so far (1, 2). The integration sites of Tn5 in the wlbA and wlbL genes of B. bronchiseptica BB-PS1 and BB-PS3, respectively, are indicated by downward arrows. The black boxes in the wlbA and wlbL structures of B. bronchiseptica indicate those parts of the two genes sequenced during this study.