PP2 is a substance used in cancer research as a selective inhibitor for Src-family kinases with 10,000-fold selectivity over ZAP-70 and JAK2.PP2 strongly inhibits the kinases Lck (IC50=4 nM), Fyn (5 nM) and Hck (5 nM), shows weaker inhibition of EGFR (480 nM) and practically no inhibition of ZAP-70 (100M) and JAK2 (50M).A Preformed Signaling Complex Mediates GnRH-Activated ERK Phosphorylation of Paxillin and FAK at Focal Adhesions in LT2 Gonadotrope Cells.VASCULAR BIOLOGY Cooperation between integrin 5 and tetraspan TM4SF5 regulates VEGF-mediated angiogenic activity .PKC and cofilin activation affects peripheral actin reorganization and cell-cell contact in cells expressing integrin 5 but not its tailless mutant.Binding of IgG-Opsonized Particles to FcR Is an Active Stage of Phagocytosis That Involves Receptor Clustering and Phosphorylation.