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DNase I footprinting analysis demonstrating sequence-specific binding of TFO1 (A), TFO17 (B) and TFO19 (C) to the 262 bp target duplex containing SPE and PRR. Lane 1, no TFOs; lanes 2–4, 1, 10 and 20 µM relevant TFO were incubated with 30 nM 262 bp 32P-labeled fragment followed by limited DNase I digestion.
