Fig. 3. SAXS data from titration series of OaPAC with ATP.

(i) SAXS profiles of OaPAC in the presence of various concentrations of ATP [ATP]. (ii) Guinier plots shown for 50 μΜ (black line), 100 μΜ (red line) and 150 μΜ (blue line) [ATP]. (iii) Plot of Rg derived from the Guinier analysis vs [ATP]. (iv) Dimensionless Kratky plots of OaPAC in the presence of various concentrations of ATP. (v) Porod-Debye plots of OaPAC (black line) and of OaPAC in the presence of 10 μΜ ATP (orange line) and 200μΜ ATP (green line). (vi) Plot of the Kratky values vs [ATP] at q = 0.05 Å⁻¹ and q = 0.11 Å⁻¹ (vii) Plot of Dmax derived from the pair distribution function (viii) vs [ATP]. (viii) Pair distribution function P(r) at selected ATP concentrations (0 μΜ: black line, 50 μΜ: orange line, 150 μΜ: blue line, 300 μΜ: green line, 1000 μΜ: violet line).