GAB1 is a member of the IRS1-like multisubstrate docking protein family and is a direct substrate of the epidermal growth factor receptor and the insulin receptor. GAB1 is tyrosine phosphorylated upon stimulation of cells with various cytokines, growth factors, and antigen receptor. Tyrosine phosphorylation of GAB1 mediates interaction with several proteins that contain SH2 domains such as SHP2 and phosphatidylinositol 3-kinase. GAB1 is an important mediator of branching tubulogenesis and plays a central role in cellular growth response, transformation and apoptosis.
The Journal of biological chemistry, 281(29), 19925-19938 (2006-05-12)
Grb2-associated binder 1 (GAB1) is a scaffold protein involved in numerous interactions that propagate signaling by growth factor and cytokine receptors. Here we explore in silico and validate in vivo the role of GAB1 in the control of mitogenic (Ras/MAPK)
The protein Grb2 plays a central role in signalling by receptor protein-tyrosine kinases, where its SH2 domain binds to the receptor and its two SH3 domains link to effectors. One target effector is Sos, so Grb2 links receptor protein-tyrosine kinases
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