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Abiraterone and galeterone induce type I differential spectral changes in human sterol 14α-demethylase (cytochrome P450 51A1, CYP51A1) with the sigmoidal shape of the binding curve. After approximation of the data by Hill model, the half-saturation concentrations (K0.5) were estimated as 22 ± 1 μM and 16 ± 1 μM and the Hill coefficients as 2.4 ± 0.2 and 1.97 ± 0.23 for abiraterone and galeterone,...
Method for electrochemical determination of l-tyrosine with screen-printed electrodes (SPE) modified with multi-walled CNT or CNT/TiO2 as sensing elements was used for the electroanalysis of l-tyrosine (Tyr). It was demonstrated that SPE/CNT and SPE/CNT/TiO2 exhibited high electrocatalytic activity and good analytical performance towards oxidation of l-tyrosine. The linear range of Tyr in human serum...
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