Figure 2

Map of the msaABCR operon. Rapid amplification of cDNA ends (RACE) and Northern blot analyses were used to determine the length and ends (5′ and 3′) of the RNA transcripts produced by the msaABCR operon. Long thin arrows represent the various RNAs identified in this study, the direction and length in nucleotides (nt) is also indicated. Short thick arrows indicate the positions and directions of the gene-specific primers used in the separate reactions. Reporter gene fusion studies showed the presence of only one active promoter (P) in this operon.