1 Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, IL 60612, USA.
2 Department of Biomedical Informatics, Jacobs School of Medicine and Biomedical Sciences, State University of New York (SUNY), University at Buffalo, 77 Goodell Street, Buffalo, NY 14203, USA.
3 NovaScan Inc., 950 N. 12th Street, Milwaukee,, WI 53233, USA.
4 Structural Biology Center, Advanced Photon Source, Argonne National Laboratory, 9700 S Cass Ave, Lemont, IL 60439, USA.