1. Institute
of Biochemistry and Molecular Biology, National Yang-Ming University, No. 155 Section 2 Linong Street Taipei, Taiwan
2. Institute
of Structural Biology, Helmholtz Zentrum München, Ingolstädter
Landstrasse 1, 85764 Neuherberg, Germany
3. Center for
Integrated Protein Science Munich at Biomolecular NMR, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany