FIG. 1.

Chromosomal arrangement of flagellin genes of V. fischeri (Vf) (A) and other Vibrio species, including V. anguillarum (Va), V. cholerae (Vc), V. parahaemolyticus (Vp), and V. vulnificus (Vv) (B) (21, 23, 28). The arrows indicate the direction of transcription, and, when known, the presence of promoter consensus sequences is indicated by arrowheads. Empirical evidence that transcription requires the alternative sigma factors σ⁵⁴ and σ²⁸ is indicated by solid arrowheads, while the presence of putative promoter consensus sequences upstream of the corresponding genes is indicated by open arrowheads.