Riaan Conradie

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During adrenal steroidogenesis the competition between 3β-hydroxysteroid dehydrogenase/Δ(5)-Δ(4) isomerase (3βHSD) and cytochrome P450 17α-hydroxylase/17,20 lyase (CYP17A1) for Δ(5) steroid intermediates greatly influences steroidogenic output. Cytochrome-b(5) (Cyt-b(5)), a small electron transfer hemoprotein, known to augment the lyase activity of CYP17A1,(More)
The metabolism of progesterone (PROG) by cytochrome P450 17α-hydroxylase/17,20-lyase (CYP17A1) results in the formation of both 17α-hydroxyprogesterone (17-OHPROG) and 16α-hydroxyprogesterone (16-OHPROG) in humans. Unlike 17-OHPROG, 16-OHPROG is not metabolised further in steroidogenic tissue. While this metabolite can be readily detected in serum and(More)
In this contribution we report on the JWS Online project and the progress that has been made since the first ESCEC meeting. Whilst maintaining the same user interface, we have completely redesigned the server part of JWS Online, now a) using webMathematica as the interface between the HTML pages and the Mathematica [1] Kernel and b) storing all models as(More)
Systems Biology requires a tight integration of experimental data and detailed computer models to obtain a quantitative understanding of the system under study. To facilitate this integration a standardization of data and model representation and storage is important. We illustrate here such an integration using JWS Online, the modeling tool developed in(More)
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