1. Walther-Straub-Institut für Pharmakologie und Toxikologie (A.B., V.B., H.J.S., S.M., E.G., T.G.), Ludwig-Maximilians-Universität München, München, Germany 80336
2. The Institute of Molecular, Cell and Systems Biology (S.J.Y.), College of Medical, Veterinary and Life Science, University of Glasgow, Glasgow GC12 8QQ, United Kingdom