Fig 2. Time-course of the rate constant of denaturation of myosin in muscles with faster rates of pH fall. Rates of pH are 0.01, 0.02, 0.04, 0.07 and 0.1 units/min as indicated. Initial and final pH 7 and 5.5 respectively. Initial and final temperature, 39 ^oC and 4^oC, respectively. Half-cooling time 180 min.