FIG. 2. Binding of Annexin II with SHP2 was affected by extra cellular calcium chelator.
Western blot analysis was carried out with lysates of the COS-1 cells pre-treated with the indicated calcium chelators for 20 min, and then either untreated or treated with EGF (100 ng/ml) for 10 min. SHP2, Annexin II or Src antibodies were used in western blots to detect the levels of the specific proteins (Input). The cell lysates were immunoprecipitated with anti-SHP2 polyclonal antibodies, followed by western blot analysis using anti -SHP2, -Annexin II or -4G10 antibodies. As a control, cell lysates were immunoprecipitated with normal rabbit serum, first lanes in lower panel.