1. Department of Structural Biology, Van Andel Institute, Grand Rapids, Michigan 49503, United States
2. Department of Pediatrics and Human Development, College of Human Medicine, Michigan State University, Grand Rapids, Michigan 49546, United States
3. Department of Chemistry and Biochemistry, The University of Lethbridge, Lethbridge, AB T1K3M4, Canada
4. Department of Translational Neuroscience, Integrated Mass Spectrometry Unit, College of Human Medicine, Michigan State University, Grand Rapids, Michigan 49503, United States
5. Northwestern University Synchrotron Research Center, Life Sciences Collaborative Access Team, Northwestern University, Argonne, Illinois 60439, United States
6. Department of Chemistry and Biochemistry, The University of Montana, Missoula, Montana 59812, United States