Transient expression of KvLQT1, IsK/MinK, and KvLQT1 + IsK/MinK in transfected chinese hamster ovary (CHO, Panel a) or african green monkey kidney (COS, Panel b) cells induce a current nearly identical to cardiac IKs. KvLQT1is the pore forming, while MinK/IsK is the auxiliary subunit of the IKs current. [from Ref. 27 (Panel a) and Ref. 28 (Panel b), used with permission].