期刊
JOURNAL OF MEDICINAL CHEMISTRY
卷 52, 期 15, 页码 4683-4693出版社
AMER CHEMICAL SOC
DOI: 10.1021/jm9001499
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资金
- Deutsche Forschungsgerneinschaft [BI 1044/2-2]
- Europrofession Foundation (Saarbrucken, Germany)
- Deutsche Jose Carreras Leukamie-Stiftung [DJCLS R 06/07]
- German Federal Ministry or Education and Science
The modulation of protein kinase activities by low molecular weight compounds is a major goal of current pharmaceutical developments. In this line, important efforts are directed to the development of drugs targeting the conserved ATP binding site. However, there is very little experience on targeting allosteric, regulatory sites, different from the ATP binding site, in protein kinases. Here we describe the synthesis, cell-free activation potency, and calorimetric binding analysis of 3,5-diphenylpent-2-enoic acids and derivatives as allosteric modulators of the phosphoinositide-dependent kinase-1 (PDK 1) catalytic activity. Our SAR results combined with thermodynamic binding analyses revealed both favorable binding enthalpy and entropy and confirmed the PIF-binding pocket of PDK I as a druggable site. In conclusion, we defined the minimal structural requirements for compounds to bind to the PIF-binding pocket and to act as allosteric modulators and identified two new lead structures (12Z and 13Z) with predominating binding enthalpy.
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