Summary
Escherichia coli RNA polymerase bound to Streptomyces phage SH10 DNA was visualized by electron microscopy. Six specific binding sites were observed at map units 53, 85, 93, 97, 98, and 99 on the physical map of the 48 kb long genome. Electron microscopy of partially denatured SH10 DNA revealed a characteristic melting pattern of A+T-rich regions around map units 1, 3, 48, 52, and 99. A comparison of the denaturation map with the RNA polymerase binding sites indicates that three binding sites are located in the most A+T-rich regions, two in other early melting regions and one in a segment of higher DNA helix stability.
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Klaus, S., Vogel, F., Gautschi, J. et al. DNA of the Streptomyces phage SH10: Binding sites for Escherichia coli RNA polymerase and denaturation map. Molec Gen Genet 189, 21–26 (1983). https://doi.org/10.1007/BF00326050
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DOI: https://doi.org/10.1007/BF00326050