1. Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, USA
2. Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37232, USA
3. Department of Neurology, Vanderbilt University Medical Center, Nashville, Tennessee 37232, USA
4. Vanderbilt Memory & Alzheimer's Center, Vanderbilt University Medical Center, Nashville, Tennessee 37212, USA
5. Vanderbilt Brain Institute, Vanderbilt University, Nashville, Tennessee 37232, USA