Max Planck Institute of Molecular Cell Biology and Genetics, Dresden 01307, Germany.|Janelia Farm Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA.|Max Planck Institute of Molecular Cell Biology and Genetics, Dresden 01307, Germany.|Max Planck Institute of Molecular Cell Biology and Genetics, Dresden 01307, Germany.|Max Planck Institute of Molecular Cell Biology and Genetics, Dresden 01307, Germany.|Max Planck Institute of Molecular Cell Biology and Genetics, Dresden 01307, Germany.