2OVC:
reference: Structural Insight into KCNQ (Kv7) Channel Assembly and Channelopathy., Howard RJ, Clark KA, Holton JM, Minor DL Jr, Neuron. 2007 Mar 1;53(5):663-675. PMID: 17329207

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).