Figure 8. Titrations of hCBS with SAM in the absence or presence of 200 mM NaCl by ITC.
A) and B) show raw calorimetric data, while C and D) display binding isotherms, with the corresponding fittings to two (solid line) or one (dashed line) independent type of sites. Experiments were performed using 8.5 μM (no salt) and 20 μM enzyme (200 mM NaCl) calculated per hCBS tetramer and 0.7 mM (no salt) or 1.0 mM SAM (200 mM NaCl) .