A) Activity of KvAP in bSUMs made of PE:PG (3:1), pulsed from −160 to 180mV at 10 mV steps. B) Recordings from KvAP channels in bSUMs made of DOPC with 9.6 mol% of CHOL. C) G-V for KvAP in bSUMs of DOPC (blue; n=3), PE:PG (3:1, black; n=4), DOPC/CHOL (4.0 mol% in red and 9.6% in brown; n=3) and PE/PG 3:1 BLMs (grey; n=3). Boltzmann fittings (solid lines) yielded (Zδ, V1/2) (e0, mV) for channels in BLM (3.0, −47.5), PE/PG bSUMs (2.0,−45), DOPC bSUMs (1.6, −42.0), 4.0 mol% CHOL (1.6, 118) and 9.6 mol% CHOL (2.0,162) in DOPC bSUMs. Error bars: s.d.