(D) Representative Western Blot analysis of increasing amount of GST-STIM1 (cytoplasmic domain) pulled down by Cap-Gly-CC1-p150Glued-V5-coated beads, in absence or presence of FLAG-EB1 C-terminal. Colors label the protein as in (c). Negative control was performed using equal amount of empty GST protein, together with Cap-Gly-CC1-p150Glued. 