K2P9.1 (also named TASK3 or KCNK9) is a member of the 2-pore (2P) domain K+ channels family that probably assemble as dimers to constitute a functional channel.1 These channels show little time or voltage dependence and are considered to be “leak” or “background” K+ channels, thereby generating background currents which help set the membrane resting potential and cell excitation.
