ML297抑制劑ML297 is a selective Kir3.1/3.2 (GIRK1/2) channel activator (IC50 values are 160, 887 and 914 nM for GIRK1/2, GIRK1/4 and GIRK1/3 respectively). ML297 exhibits no effect on GIRK2, GIRK2/3, Kir2.1 and Kv7.4 channels, and has minimal effect on a pan