Table 1

Plasmids used in this study

Plasmid nameDescriptionSource or reference
pBBR1MCS-4Broad-host-range cloning vector; Ampr21
pNPTS138Cloning vector; contains sacB gene; Kanr38
pMR15Broad-host-range vector containing a promoterless lacZ gene; Kanr3
pC3015In-frame deletion of ohr plus 1 kb of each flanking region in pNPTS138This study
pC3016In-frame deletion of ohrR plus 1 kb of each flanking region in pNPTS138This study
pC3018ohr locus including the entire promoter region in pBBR1MCS-4This study
pC3019ohrR locus including the entire promoter region in pBBR1MCS-4This study
pC3020ohr promoter region cloned into pMR15This study
pC3021ohrR promoter region cloned into pMR15This study