Institute of Biophysics and Physical Biochemistry, University of Regensburg, Regensburg, Germany.|Institute of Biophysics and Physical Biochemistry, University of Regensburg, Regensburg, Germany.|Institute of Biophysics and Physical Biochemistry, University of Regensburg, Regensburg, Germany.|Institute of Biophysics and Physical Biochemistry, University of Regensburg, Regensburg, Germany.|Institute of Biophysics and Physical Biochemistry, University of Regensburg, Regensburg, Germany.