In order to define the mean DNA bend angle and distribution of DNA bend angles in the catabolite activator protein (CAP)-DNA complex in solution under standard transcription initiation conditions, we have performed nanosecond time-resolved fluorescence measurements quantifying energy transfer between a probe incorporated at a specific site in CAP, and a complementary probe incorporated at each of five specific sites in DNA. The results indicate that the mean DNA bend angle is 77(+/-3) degrees...Expand abstract
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Mean DNA bend angle and distribution of DNA bend angles in the CAP-DNA complex in solution.
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