- Phosphorylation of focal adhesion kinase (FAK) on Ser732 is induced by rho-dependent kinase and is essential for proline-rich tyrosine kinase-2-mediated phosphorylation of FAK on Tyr407 in response to vascular endothelial growth factor. Le Boeuf, F., Houle, F., Sussman, M., Huot, J. Mol. Biol. Cell (2006)