1. Department of Chemistry, Washington University in St. Louis, St. Louis, Missouri, USA
2. The Genome Institute, Washington University School of Medicine, St. Louis, Missouri, USA
3. Department of Genetics, Washington University School of Medicine, St. Louis, Missouri, USA
4. Bioinformatics Core, Discovery Park, Purdue University, West Lafayette, Indiana, USA
5. Department of Biochemistry, Purdue University, West Lafayette, Indiana, USA