Fig. 2.
Effect of yohimbine on guanine oxidation in human IRE RNA. (Left) Lanes 1–6, [RuO2+] = 100 μM. [yohimbine]: lane 1, 0 μM; lane 2, 1 μM; lane 3, 5 μM; lane 4, 10 μM; lane 5, 20 μM; lane 6, aniline-treated control; lane 7, RNA only control. (Right) Quantitations of [32P]RNA bands. Cleavage intensity is in arbitrary units normalized to cleavage at G0.