FIG. 1.

(A) Organization of the bmp locus of B. burgdorferi and locations of primers, probes, and relevant restriction enzyme sites. The transcription start site of the bmpAB operon is indicated by a bent arrow, and the putative transcription terminator within bmpB is depicted by a hairpin. (B) Northern analysis of transcripts expressed from the bmp locus of B. burgdorferi. The lane containing bmpC is not shown, as no mRNA species was detected for this gene. (C) Characterization of the bmpAB RNAs by RNase H digestion. (D) Mapping of the bmpAB promoter by primer extension. The two dominant transcription start site A's at −30 and −32 are circled.