FIGURE 1.
Titration of the intrinsic protein fluorescence of YghU with GSH. The experimental data were fit to two binding-site model (eq. 2) with a Kd1 = 0.07 ± 0.03 mM, ΔF1 = (2.1 ± 0.6) × 105 and Kd2 = 1.3 ± 0.2 mM, ΔF2 = (-8.7 ± 0.5) × 105, r = 0.999.