1. Department of Medicine, Division of Endocrinology, Metabolism and Molecular Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
2. Center for Genetic Medicine, Northwestern University, Chicago, IL 60611, USA.
3. Medical Scientist Training Program, University of Chicago, Chicago, IL 60637, USA.
4. Graduate Program in the Biophysical Sciences, University of Chicago, Chicago, IL 60637, USA.
5. James Franck Institute, University of Chicago, Chicago, IL 60637, USA.
6. McArdle Laboratory for Cancer Research, University of Wisconsin, Madison, WI 52705, USA.
7. Department of Chemistry, University of Chicago, Chicago, IL 60637, USA.