Fig. 6.
CAT activities of SgWT carrying PatlS-cat cultured in TY medium containing 25 mM galactose at different growth phases, under aerobic or anaerobic conditions (A), SgWT and its derivatives cultured in TY medium containing 25 mM galactose and collected at stationary phase, under aerobic or anaerobic conditions (B), and SgWT2 carrying PlytT-cat and its derivatives cultured in BHI broth, under aerobic or anaerobic conditions (C). Cells were collected at the midexponential phase of growth. The values of the columns are the average of a minimum of nine separate cultures for each strain and condition. *, statistically significant differences between the same strain cultured anaerobically or aerobically (P < 0.05 [Student t test]). †, statistically significant differences between the wild-type and mutant strains cultured under the same conditions (P < 0.05 [Student t test]).