Research Article

Calorimetric Study of Helix aspersa Maxima Hemocyanin Isoforms

Table 1

Arrhenius equation parameters, estimated for the two-state irreversible model of the thermal denaturation of isoform β-HaH, at neutral pH.

ParameterTemperature scan rate (°C min−1)
0.240.51.01.5

Tm (°C)77.9078.8079.8881.40
ΔHcal (MJ·mol−1)118.6127.4145.0154.0
Ea (kJ·mol−1)307 ± 7316 ± 4302 ± 6306 ± 8
(°C)84.6 ± 0.584.8 ± 0.385.0 ± 0.484.9 ± 0.3
r0.9920.9930.9960.994