1. Department of Chemistry and Biochemistry, Wichita State University, Wichita, Kansas 67260, United States
2. Department of Diagnostic Medicine & Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506, United States
3. Protein Structure and X-ray Crystallography Laboratory, The University of Kansas, Lawrence, Kansas 66047, United States
4. NYX, New York Structural Biology Center, Upton, New York 11973, United States