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Table 1 The equilibrium model parameters for SOD Ss and rSOD Ss

From: Improving the thermostability and stress tolerance of an archaeon hyperthermophilic superoxide dismutase by fusion with a unique N-terminal domain

Enzyme

ΔG ‡acat (kJ mol−1)

ΔG ‡binact (kJ mol−1)

ΔH ceq (kJ mol−1)

T deq (°C)

SOD Ss

67.2

119.1

83.2

65.8

rSOD Ss

67.1

183.9

112.7

76.7

  1. aGibbs’ free energy of activation for an enzyme-catalyzed reaction
  2. bGibbs’ free energy of activation for the irreversible thermal inactivation of an enzyme
  3. cChange in enthalpy for the Eact to Einact transition
  4. dThe temperature at which the Eact–Einact equilibrium is at its midpoint