The protein encoded by GAB1（GRB2 associated binding protein 1） is a member of the IRS1-like multisubstrate docking protein family. It is an important mediator of branching tubulogenesis and plays a central role in cellular growth response, transformation and apoptosis. Two transcript variants encoding different isoforms have been found for GAB1.蛋白别名为：GRB2-associated-binding protein 1 (GRB2-associated binder 1) (Growth factor receptor bound protein 2-associated protein 1);基因ID为：2549；蛋白质ID:Q13480
