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  • Title: Switch control pocket inhibitors of p38-MAP kinase. Durable type II inhibitors that do not require binding into the canonical ATP hinge region.
    Author: Ahn YM, Clare M, Ensinger CL, Hood MM, Lord JW, Lu WP, Miller DF, Patt WC, Smith BD, Vogeti L, Kaufman MD, Petillo PA, Wise SC, Abendroth J, Chun L, Clark R, Feese M, Kim H, Stewart L, Flynn DL.
    Journal: Bioorg Med Chem Lett; 2010 Oct 01; 20(19):5793-8. PubMed ID: 20800479.
    Abstract:
    Switch control pocket inhibitors of p38-alpha kinase are described. Durable type II inhibitors were designed which bind to arginines (Arg67 or Arg70) that function as key residues for mediating phospho-threonine 180 dependant conformational fluxing of p38-alpha from an inactive type II state to an active type I state. Binding to Arg70 in particular led to potent inhibitors, exemplified by DP-802, which also exhibited high kinase selectivity. Binding to Arg70 obviated the requirement for binding into the ATP Hinge region. X-ray crystallography revealed that DP-802 and analogs induce an enhanced type II conformation upon binding to either the unphosphorylated or the doubly phosphorylated form of p38-alpha kinase.
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