The Csk homologous kinase, Chk, binds tyrosine phosphorylated paxillin in human blastic T cells.

Abstract excerpt

In determining the role of Chk in T cell signaling, we have focused on its protein-protein interactions. We detected a tyrosine phosphoprotein that coimmunoprecipitated with Chk from pervanadate stimulated human blastic T cells. Subsequent Western blot analysis identified this tyrosine phosphoprotein as paxillin. Paxillin, a cytoskeletal protein involved in focal adhesions, was first identified as a v-Src...

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