FIG. 4.
Motility and flhDC and yplA expression patterns are altered in Y. enterocolitica serotype O:8 acyltransferase mutants. (A) Results from a motility assay on a semisolid agar plate. Shown are the motilities after 24 h of incubation at RT. Data are presented as means ± SD (n = 3). Strains are listed according to the relevant genotype. (B) Analysis of flhDC expression by strains carrying the transcriptional fusion flhDC::lucFF. Results are given in RLU per OD540. (C) β-Galactosidase activity production by yplA′::lacZYA present in different strains (β-galactosidase values are given in Miller units and are means ± SD [n = 3]). *, results are significantly different (P < 0.05; one-tailed t test) from the results for YeO8 (wild-type strain).