Table 2 Thermodynamic parameters.

The parameters were determined by fitting the data in Fig. 3 with the expression Embedded Image. The range of A values was 30 to 40% of the values in the table (when taking into account the error bars in Fig. 3).

pH 7pH 10
Ea (kJ/mol)ln AEa (kJ/mol)ln A
Heme b oxidation
(560-nm first decay)
17 ± 21840 ± 427
PR formation
(610-nm increase)
60 ± 53460 ± 534