Expression of levD promoter:cat fusion in wild type UA159, reconstituted GPS®-LS mutant SLS65 and its derivatives, as measured by CAT assays.

aThe data are presented as the average results of at least three independent cultures. Cells were cultured in TV broth with 0.5% of the indicated carbohydrates and assays were performed as described in Materials and Methods. Activity is expressed as nmol of chloramphenicol acetylated (mg of protein−1×min−1).