1. Department of Mathematical, Physical and Computer Sciences, University of Parma, Parco Area delle Scienze 7/A-43124 Parma, Italy
2. Structural Biology Initiative, CUNY Advanced Science Research Center, New York, New York 10031, United States
3. Department of Chemistry and Biochemistry, City College of New York, New York, New York 10031, United States
4. Ph.D. Programs in Biochemistry, Chemistry, and Biology, The Graduate Center of the City University of New York, New York, New York 10016, United States
5. Lehrstuhl für Biochemie, Universität Bayreuth, 95447 Bayreuth, Germany
6. Research Center for Bio-Macromolecules, Universität Bayreuth, 95447 Bayreuth, Germany
7. Bayreuth Center for Biochemistry & Molecular Biology, Universität Bayreuth, 95447 Bayreuth, Germany