Domain:PTB domain mediates receptor interaction. ,Function:DOK proteins are enzymatically inert adaptor or scaffolding proteins. They provide a docking platform for the assembly of multimolecular signaling complexes. DOK2 may modulate the cellular proliferation induced by IL-4 , as well as IL-2 and IL-3. May be involved in modulating Bcr-Abl signaling. Attenuates EGF-stimulated MAP kinase activation. ,PTM:On immunoreceptor stimulation , phosphorylated on C-terminal tyrosine residues. Phosphorylation on Tyr-345 is required for binding to the SH2 domain of NCK. Phosphorylation on both Tyr-271 and Tyr-299 is required for interaction with RASGAP. ,similarity:Belongs to the DOK family. Type A subfamily. ,similarity:Contains 1 IRS-type PTB domain. ,similarity:Contains 1 PH domain. ,subunit:Interacts with phosphorylated RASGAP and EGFR. Interacts with RET and NCK. ,tissue specificity:Highly expressed in peripheral blood leukocytes , lymph nodes and spleen. Lower expression in thymus , bone marrow and fetal liver. ,
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