The paper 'The ubiquitous flavonoid quercetin is an atypical KCNQ potassium channel activator', published in 2020 reads:
"Quercetin potentiated KCNQ1/KCNE1, KCNQ2/3 and KCNQ4 currents but, unusually, not KCNQ5. Strikingly, quercetin augmented both activation and inactivation of KCNQ1, via a...