FIG. 8.
Diagram of the genetic organization of the cfrA, ceuE, and Cj0178 mutants described in this study. Each mutant was constructed by site-directed deletion and insertional mutagenesis with the chloramphenicol resistance marker (Cmr). The length of each deletion is shown in parentheses (in base pairs). The solid black arrow represents the position and orientation of the inserted chloramphenicol antibiotic resistance cassette in each gene. Given the absence of a transcriptional terminator downstream of the chloramphenicol resistance gene and the orientation of this gene with respect to the mutated gene, the constructed mutations are likely nonpolar. All genes are drawn approximately to scale.