Diagram depicting 3D topological structure of the SG2NA protein variants (A) 35kda (B) 78 kDa (C) 87 kDa. The Caveolin-binding domain in blue (res. 71–79), putative coiled-coil domain in orange (res. 86–132), Calmodulin-binding domain in green (res. 166–183) and WD-40 repeat domain in cyan (res. 353–753) has been shown in both backbone and surface topology styles.