1. Department
of Pharmacology, The University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
2. Protein/Peptide
Sequencing Facility, National Institute of Neurological Disorders and Stroke, Bethesda, Maryland 20824, United States
3. Laboratory
of Structural Bioinformatics, Department of Chemical Biology, University of Buenos Aires, Buenos Aires, Argentina
4. Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., Dortmund, Germany