Summary of redox regulation of Ca2+ homeostasis. See text for details. ⊕, activation; ø, inhibition; ASIC1, acid-sensing ion channel 1; DAG, diacylglycerol; IP3(R), inositol triphosphate (receptor); ORAI1, calcium release-activated calcium modulator 1; RISP, Rieske iron-sulfur protein; RyR, ryanodine receptor; SERCA, sarco-/endoplasmic reticulum calcium ATPase; SOC/ROC, store-operated channels/receptor-operated channels; SR, sarcoplasmic reticulum; STIM1, stromal interaction molecule 1; TRPC, transient receptor potential channel.