[1] Univ Maastricht, CARIM, Dept Biochem & Human Biol, NL-6200 MD Maastricht, Netherlands
[2] Univ Wurzburg, Rudolf Virchow Ctr Expt Biomed, D-97078 Wurzburg, Germany
[3] Max Planck Inst Biochem, Dept Mol Med, D-82152 Martinsried, Germany
[4] Heidelberg Univ, Dept Pharmacol, D-69120 Heidelberg, Germany