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A highly specific inhibitor of human p38 MAP kinase binds in the ATP pocket

Nature Structural Biology volume 4, pages 311–316 (1997)Cite this article

Abstract

The crystal structure of human p38 mitogen-activated protein (MAP) kinase in complex with a potent and highly specific pyridinyl-imidazole inhibitor has been determined at 2.0 Å resolution. The structure of the kinase, which is in its unphosphorylated state, is similar to that of the closely-related ERK2. The inhibitor molecule is bound in the ATP pocket. A hydrogen bond is made between the pyridyl nitrogen of the inhibitor and the main chain amido nitrogen of residue 109, analogous to the interaction from the N1 atom of ATP. The crystal structure provides possible explanations for the specificity of this class of inhibitors. Other protein kinase inhibitors may achieve their specificity through a similar mechanism. The structure also reveals a possible second binding site for this inhibitor, with currently unknown function.

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Authors and Affiliations

  1. Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut, 06877, U.S.A.

    Liang Tong, Susan Pav, Della M. White, Sheri Rogers, Kathy M. Crane, Charles L. Cywin, Maryanne L. Brown & Christopher A. Pargellis

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  2. Susan Pav
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Tong, L., Pav, S., White, D. et al. A highly specific inhibitor of human p38 MAP kinase binds in the ATP pocket. Nat Struct Mol Biol 4, 311–316 (1997). https://doi.org/10.1038/nsb0497-311

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