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. 1986 Apr 25;14(8):3521-6.
doi: 10.1093/nar/14.8.3521.

Sequences of three promoters for the bacteriophage SP6 RNA polymerase

J E Brown, J F Klement, W T McAllister
Free PMC article

Sequences of three promoters for the bacteriophage SP6 RNA polymerase

J E Brown et al. Nucleic Acids Res. .
Free PMC article

Abstract

Fragments of SP6 DNA generated by cleavage with Hpa II or Taq I were cloned into the Cla I site of pBR322 and the recombinant plasmids were screened for the presence of SP6 promoter activity by transcription in vitro with purified SP6 RNA polymerase. Three plasmids having promoter activity and small inserts of SP6 DNA were characterized. Hybridization studies showed that all three cloned promoters arose from different regions of the SP6 genome. Comparison of the consensus promoter sequence (5' ATTTAGGtgGACACTATAGAAGgaG 3') with the consensus sequences of promoters recognized by the T3 and T7 RNA polymerases reveals a common core sequence (5'-CACTA-3') extending from -7 to -3, as well as other features that may be important in selective promoter recognition by the phage RNA polymerases.

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