Figure 6. Activity of H2O2-sensitive nvTRPM2 variants in measurements of intracellular Ca2+ (calcium imaging).
(a)–(c), (e), (f) Representative experiments on hTRPM2, nvTRPM2, empty vector control, nvTRPM2-hNUD and nvTRPM2-(Δ15) as indicated, showing the F340/F380 ratio over time. Extracellular H2O2 (10 mM) was added at time points marked with arrows. Maximal increases in F340/F380 are summarized in d. The inhibiting effect of extracellular Ca2+ removal is shown in panel f. ***Indicates a significant difference (P = 0.001) evaluated with a one-way ANOVA and the Bonferroni correction. n = 12–19. Error bars are s.e.