[1] University of Florence,Centro Risonanze Magnetiche
[2] Max Planck Institute of Biochemistry,Department of Neurobiology
[3] Max-Delbrück-Center for Molecular Medicine,Department of Structural Biology
[4] Karolinska Institutet,Division of Structural Biology
[5] Weizmann Institute of Science,undefined
[6] Weizmann Institute of Science,undefined
[7] Oxford University,undefined