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Analysis of pucBA mRNA levels in the wild type (WT) and in the PPSRK mutant strains grown under photosynthetic (PS) or under semiaerobic (SA) conditions. (A) Total RNA was extracted from the wild type and the PPSRK mutant and then hybridized with a pucBA-specific probe. Approximately 10 μg of total RNA was loaded in each lane. (B) Values were normalized by the levels of 23S and 16S rRNAs.
