... panel), St2.3 (middle panel) and St3.2 (right panel). The first lane of each panel (lanes 1, 4 and 7) corre-sponds to each St protein incubated with CD extract. Lanes 2, 5 and 8 correspond to ... anti-GS (lane 2) or anti-D123 (lane 3)serum. (E) Pull-down assays for D1 (left panel), D2 (middle panel) and D3 (right panel). The first lane of each panel (lanes 1, 4 and 7) corre-sponds to each ... 1): a64 kDa band, corresponding to D123, and a 48 kDaband, corresponding to the CD protein as detected bywestern blot analysis (Fig. 2A, bottom panel). The D123 protein bound to the Ni2+resin...