The thesis describes the investigation on ligand-protein and protein-protein interactions, concentrating on the interaction of p53 with MDM2/X. A new screening, NMR-based method is described that allows for rapid, robust testing of the binding of small-molecular weight compounds to MDM2/X. Inhibition of the p53-MDM2/X complexation can also be monitored and novel compounds were found which effectively disrupt the p53-MDM2 interaction. The binding constant of these compounds is in the range of 5-10 µM. Crystal structures of MDM2 and MDMX show that, despite similarities in their amino acid sequences, there are significant differences in the structures of the p53 binding pockets for these proteins. These results indicate that inhibitors which were developed for MDM2 will only poorly bind to MDMX. The thesis indicates that to release of p53 from its complex with MDM2 or MDMX special inhibitors for both proteins have to be designed.
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The thesis describes the investigation on ligand-protein and protein-protein interactions, concentrating on the interaction of p53 with MDM2/X. A new screening, NMR-based method is described that allows for rapid, robust testing of the binding of small-molecular weight compounds to MDM2/X. Inhibition of the p53-MDM2/X complexation can also be monitored and novel compounds were found which effectively disrupt the p53-MDM2 interaction. The binding constant of these compounds is in the range of 5-1...
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