1. Departments of Structural Biology and Developmental Neurobiology, St. Jude Children’s Research Hospital, Memphis, Tennessee 38105, United States
2. Chemical Biology & Therapeutics Department, St. Jude Children’s Research Hospital, Memphis, Tennessee 38105, United States
3. Center for Proteomics and Metabolomics, St. Jude Children’s Research Hospital, Memphis, Tennessee 38105, United States