[Under review]  Computational Design of Transmembrane Channels Chunfu Xu*, Peilong Lu*, Tamer M. Gamal El-Din, Xue-Yuan Pei, Matthew C. Johnson, Atsuko Uyeda, Matthew J. Bick, Daohua Jiang, Yang Hsia, TJ Brunette, Dan Ma, Eric Lynch, Scott E. Boyken, Po-Ssu Huang, Lance Stewart, Justin M. Kollman, Ben F. Luisi, Tomoaki Matsuura, William A. Catterall, David Baker