FIG. 1.

Detection of kdpFABC transcripts by Northern blot analysis. (A) For Northern blot analysis 20 μg of RNA was loaded in each lane and kdpFABC transcripts were detected using a radiolabeled PCR product complementary to kdpA. Shown also are an RNA standard (left) and ethidium bromide-stained rRNA of the same samples used for the Northern blot (bottom). (B) kdpFABC transcripts quantified by PhosphorImager analysis.