G蛋白通过对膜离子通道的作用调节各种细胞的电活动。在本研究中,利用培养的牛肾上腺嗜铬细胞,采用内面外外膜片钳技术,检测G蛋白对单一高电导钙激活的钾通道(BK通道)的作用。可见,在膜电位为+40mV,胞内钙浓度为1μmol/L时,胞 G proteins regulate the electrical activity of various cells by acting on membrane ion channels. In this study, cultured bovine adrenal chromaffin cells were used to detect the effect of G protein on a single high-conductance calcium-activated potassium channel (BK channel) using the technique of internal and external patch-clamp techniques. Can be seen in the membrane potential of +40 mV, intracellular calcium concentration of 1μmol / L, cells