(A) Plot of ln(scan rate/Tm2) versus 1/Tm for the thermal denaturation of rhodopsin. Rhodopsin Tm was determined at 0 (black squares), 5 (gray squares), 10 (light gray squares), 20 (black triangles), 50 (gray triangles), 100 (light gray triangles), and 200 (black circles) mM OG. (B) Plot of ln(scan rate/Tm2) versus 1/Tm for the thermal denaturation of opsin. Opsin Tm was determined at 0 (black squares), 10 (gray squares), and 20 (light gray squares) mM OG. Each Tm was determined at scan rates of 1.5, 1.0, 0.5, and 0.25 K/min.