1. Center for Structural
Genomics of Infectious Diseases, Department of Biochemistry and Molecular
Genetics, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, United States
2. Department of Chemistry and Biochemistry, San Francisco State University, San Francisco, California 94132, United States
3. LS-CAT,
Synchrotron Research Center, Northwestern University, Argonne, Illinois 60439, United States