Abstract.
The pst operon of Escherichia coli, which encodes the phosphate-specific transport system, is composed of five genes, pstS, pstC, pstA, pstB and phoU, whose transcription is induced by phosphate starvation. A phosphate-regulated promoter located upstream of the most proximal gene (pstS) controls the transcription of the entire operon. Though the full-length pst mRNA could be detected by an improved RT-PCR protocol, Northern analysis using several pst-specific probes failed to reveal this transcript. Instead, smaller but distinct pst mRNA species were evident. Primer-extension experiments localized the 5′ ends of pst mRNAs within the operon. The data suggest that the full-length mRNA is rapidly processed post-transcriptionally.
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Aguena, .M., Yagil, .E. & Spira, .B. Transcriptional analysis of the pst operon of Escherichia coli . Mol Gen Genomics 268, 518–524 (2002). https://doi.org/10.1007/s00438-002-0764-4
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DOI: https://doi.org/10.1007/s00438-002-0764-4