Fig. 2.
Properties of targeted HyPer and SypHer variants in HEK 293 cells (A) Typical microscopy images of HEK293 cells stably expressing HyPer in the cytosol (cyto-HyPer) and mitochondrial matrix (mito-HyPer). (B) Effect of various extracellular H2O2 concentrations on the maximal cyto-HyPer ratio. The latter was calculated by dividing the maximal ratio value (Rmax) by the pre-H2O2 ratio (R0) for multiple cells (n=5) measured in two independent experiments. The experimental data was fitted using a sigmoidal (Logistic) fitting equation. (C) Effect of extracellular H2O2 application on the ratio signal (480 nm/420 nm) of cyto-HyPer and mito-HyPer (upper panel) and their individual 420 nm and 480 nm signals (lower panel). (D) Same as panel B but now for the effect of extracellular H2O2, the reducing agent dithiothreitol (DTT) and NH4Cl on the signals of cyto-HyPer (left part) and cyto-SypHer (right part).
