Chemicals such as sodium chloride (NaCl), 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES), inositol hexaphosphate (IHP), and bezafibrate (BZF), the highest purity available, were purchased from Sigma-Aldrich. All samples were prepared in 100 mM HEPES, pH 7.4 with double distilled water. IHP was used in a final concentration of 2 mM, BZF in 10 mM, and the NaCl concentration was 100 mM. All the allosteric effectors were added in a concentration to ensure saturation of the binding sites (of 60 μM protein).
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