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  • Title: Mapping the B and D gene promoters of bacteriophage S13 by footprinting and exonuclease III analysis.
    Author: Arquint M, Spencer JH.
    Journal: J Virol; 1987 Dec; 61(12):3694-700. PubMed ID: 2824808.
    Abstract:
    The region of the bacteriophage S13 genome which contains the B, K, and C genes and most of the A, D, and E genes (map positions 627 to 2198) was analyzed for Escherichia coli RNA polymerase-binding sites by combined DNase I footprinting, exonuclease III analysis, and DNA sequencing. Two high-affinity binding sites that correspond to the B and D gene promoters were mapped at positions 936 to 995 and 1779 to 1848, respectively. Positions 936 to 995 are in gene A, preceding the B gene, and positions 1779 to 1848 are in gene C, just preceding the D gene. In addition, two lower-affinity binding sites were identified at positions 1527 to 1538 and 1705 to 1756 preceding the C and D genes, respectively. The footprinting studies described here, in combination with previous studies on transcription, provide definitive evidence on the position of the B and D gene promoters in S13 and the closely related phage phi X174.
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