Figure 6.
Association of VILIP-2 with CaV2.1 channels via the IQ-like domain and CBD. Transfected cells were cross-linked in situ with DSP, as described in Materials and Methods. A, Lysates from cells transfected with CaV2.1 plus VILIP-2 myc or CaV2.1ΔCBD plus VILIP-2 myc were subjected to immunoprecipitation by anti-CaV2.1 antibodies or control IgG as indicated in the presence of 10 mm EGTA. B, Lysates from cells transfected with CaV2.1, CaV2.1/1965ST, CaV2.1/IM-AA, and CaV2.1ΔCBD/IM-AA plus VILIP-2 myc were subjected to immunoprecipitation by anti-CaV2.1 antibodies or control IgG in the presence of 10 mm EGTA. Blots were probed with either anti-CaV2.1 (top) or anti-myc (bottom). WT, Wild type.