PMID:2126011
Yamada, H, Muramatsu, S and Mizuno, T (1990) An Escherichia coli protein that preferentially binds to sharply curved DNA.J. Biochem. 108:420-5
| Abstract | We attempted to find Escherichia coli proteins which preferentially bind to a curved DNA sequence even in the presence of an excess amount of a non-curved DNA sequence as a competitor, mainly by means of a DNA-binding gel retardation assay. Since the two sequences used had nearly the same nucleotide compositions, including consecutive dA5 stretches, we reasoned that this strategy would allow us to identify proteins which preferentially recognize an overall DNA curvature. We purified such a protein from E. coli. Its preferential binding to the curved DNA was found to be inhibited by distamycin, which removes the curvature from appropriate DNA sequences. The purified protein was identified as the E. coli nucleoid protein, H-NS. |
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