1. Department of Structural and
Computational Biology, Max F. Perutz Laboratories, University of Vienna, Campus Vienna Biocenter 5/1, 1030 Vienna,
Austria
2. Institute of Biochemistry,
Center
for Molecular Biosciences (CMBI), University of Innsbruck, Peter-Mayr-Strasse 1a, 6020 Innsbruck, Austria