1 Biochemistry III-Regensburg Center for Biochemistry, Institute for Biochemistry, Genetics and Microbiology, University of Regensburg, Regensburg, Germany.
2 Department of Life and Environmental Science, New York-Marche Structural Biology Center (NY-MaSBiC), Polytechnic University of Marche, Ancona, Italy.
3 Department Molecular Medicine, Policlinico Umberto I°Viale Regina, University of Rome Sapienza, Rome, Italy.