Abstract
1. 1. Calorimetric experiments showed a marked effect of Ca2+ and Mg2+ on the thermotropic behaviour of dimyristoyl phosphatidylglycerol.
2. 2. Concentrations of Ca2+ and Mg2+ lower than 1 ion to 2 molecules of phosphatidylglycerol produced a shift of the phase transition to higher temperatures and an increase in the enthalpy
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