Voltage-dependent potassium channel involved in the excitation of muscles operating egg-laying and defecation. Expressed in muscles for egg-laying, anal depressor and sphincter, and the four most anterior head muscles. Found in neurons including enteric motor neurons AVL and DVB and the sensory neuron PHB, the spermatheca, and the distal tip cells of the somatic gonad. Egg-laying defects; retain many more eggs in utero, laid eggs appear later in development. Moderately defective in generating the expulsion step of defecation. Hyperpolarizing shifts in the voltage dependence of channel activation. Belongs to the potassium channel family. C (Shaw) (TC 1.A.1.2) subfamily. Shaw sub-subfamily.