The Gab1 docking protein links the b cell antigen receptor to the phosphatidylinositol 3-kinase/Akt signaling pathway and to the SHP2 tyrosine phosphatase.
Ingham RJ, Santos L, Dang-Lawson M, Holgado-Madruga M, Dudek P, Maroun CR, Wong AJ, Matsuuchi L, Gold MR, J Biol Chem, 2001 Apr 13 - link

A conserved inositol phospholipid binding site within the pleckstrin homology domain of the Gab1 docking protein is required for epithelial morphogenesis.
Maroun CR, Moscatello DK, Naujokas MA, Holgado-Madruga M, Wong AJ, Park M, J Biol Chem, 1999 Oct 29 - link