Figure 1. AdamantylSGC Inhibition of Yeast Hsc70 ATPase Activity-Single Turnover Assay.
(A) Yeast Hsc70 (Ssa1p) was preloaded with [32P] ATP ± SV40 T antigen (TAg, J-domain-containing protein) on ice and 32P release from the purified complex ± adaSGC (300 μM added at 50 s) monitored with incubation at 30°C. Means of triplicate determinations ± standard error are shown. ○ Yeast Hsc70 (Ssa1p); ● Yeast Hsc70 (Ssa1p) + 300 μM adaSGC; □ Yeast Hsc70 (Ssa1p) + TAg; ■Yeast Hsc70 (Ssap1) + TAg + 300 μM adaSGC.
(B) Inhibition of T antigen stimulated Hsc70 single-turnover ATPase activity was monitored as a function of adaSGC concentration.
(C) Structure of adamantylSGC (adaSGC).