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. 2010 Oct 15;286(1):270–279. doi: 10.1074/jbc.M110.174102

TABLE 2.

Dissociation constants for the binding of −10 oligos to free σ70, σ70 RNAP holoenzyme, and the (β′-σ70) complex

The Kd values presented are averages from 2 to 3 individual experiments, the error is ±15%.

Oligo Kd, free σ Kd holo-RNAP Kd (β′-σ) Kd (σ)/Kd (holo) Kd (σ)/Kd (β′-σ)
μm μm μm
−12/+2 41 0.15 5.1 270 8
−12/−3 43 1.5 8.7 29 4.9
−12/−6 220 80 110 2.8 2
lacUV5, −18 + 1 37 0.4 93