[1] Max Planck Inst Biophys Chem, Abt Membranbiophys, D-37077 Gottingen, Germany
[2] Max Planck Inst Expt Med, Abt Mol Neurobiol, D-37075 Gottingen, Germany
[3] Max Planck Inst Expt Med, Abt Neurogenet, D-37075 Gottingen, Germany
[4] Univ Texas, SW Med Ctr, Howard Hughes Med Inst, Ctr Basic Neurosci,Dept Mol Genet, Dallas, TX 75390 USA
[5] Mitsubishi Kasei Inst Life Sci, Tokyo 1948511, Japan