X-ray crystal structure of bone marrow kinase in the x chromosome: a Tec family kinase.Muckelbauer, J., Sack, J.S., Ahmed, N., Burke, J., Chang, C.Y., Gao, M., Tino, J., Xie, D., Tebben, A.J.
(2011) Chem Biol Drug Des 78: 739-748
- PubMed: 21883956
- DOI: https://doi.org/10.1111/j.1747-0285.2011.01230.x
- Primary Citation of Related Structures:
- PubMed Abstract:
Bone marrow kinase in the X chromosome, a member of the Tec family of tyrosine kinases, plays a role in both monocyte/macrophage trafficking as well as cytokine secretion. Although the structures of Tec family kinases Bruton's tyrosine kinase and IL-2-inducible T-cell kinase are known, the crystal structures of other Tec family kinases have remained elusive. We report the X-ray crystal structures of bone marrow kinase in the X chromosome in complex with dasatinib at 2.4 Å resolution and PP2 at 1.9 Å resolution. The bone marrow kinase in the X chromosome structures reveal a typical kinase protein fold; with well-ordered protein conformation that includes an open/extended activation loop and a stabilized DFG-motif rendering the kinase in an inactive conformation. Dasatinib and PP2 bind to bone marrow kinase in the X chromosome in the ATP binding pocket and display similar binding modes to that observed in other Tec and Src protein kinases. The bone marrow kinase in the X chromosome structures identify conformational elements of the DFG-motif that could potentially be utilized to design potent and/or selective bone marrow kinase in the X chromosome inhibitors.
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