. "Authored: Akkerman, JW, 2009-09-04"^^ . "Reviewed: Harper, MT, 2009-11-02"^^ . "Reviewed: Poole, AW, 2009-11-02"^^ . "Reviewed: Jones, ML, 2009-11-02"^^ . "Edited: Jupe, S, 2009-11-03"^^ . "Vav interacts directly with PIP2 and PIP3, with a fivefold selectivity for PIP3 over PIP2. PIP3 gives a twofold stimulation of Vav1 GEF activity while PIP2 leads to 90% inhibition. Binding probably occurs through the PH domain, known to bind phosphoinositides."^^ . . . . . . "PIP2 inhibits Vav"^^ . . . .