FIG. 1.

Genetic organization of the L. sakei arc operon and sequence of the ParcA promoter region. The ParcA promoter is indicated by a bent arrow. Putative rho-independent terminators are indicated by hairpins. The major RNA species observed are indicated by arrows under the operon structure. The sequence spanning the ParcA promoter region is shown in detail (positions 20 to 259 in the sequence deposited under EMBL accession no. AJ001330). The arrows at the top indicate a putative rho-independent terminator; the boxes contain putative cre sequences; the potential arcR binding sites are indicated by highlighting; −35 and −10 boxes are indicated by boldface type and underlining; the vertical arrows indicate transcription initiation points; the RBS is indicated by boldface type; and the translation start site of arcA is underlined.