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Chem Biol Drug Des. 2009 Dec;74(6):547-59. doi: 10.1111/j.1747-0285.2009.00884.x. Epub 2009 Oct 20.

The design, synthesis and potential utility of fluorescence probes that target DFG-out conformation of p38alpha for high throughput screening binding assay.

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Pfizer Research Technology Center, 620 Memorial Drive, Cambridge, MA 02139, USA.


The design, synthesis and utility of fluorescence probes that bind to the DFG-out conformation of p38alpha kinase are described. Probes that demonstrate good affinity for p38alpha, have been identified and one of the probes, PF-04438255, has been successfully used in an high throughput screening (HTS) assay to identify two novel non-classical p38alpha inhibitors. In addition, a cascade activity assay was utilized to validate the selective binding of these non-classical kinase inhibitors to the unactive form of the enzyme.

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