1. Structural Biophysics Laboratory,
Center for Cancer Research, Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702, United
States
2. Chemical Biology
Laboratory,
Center for Cancer Research, Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702, United
States
3. Macromolecular Crystallography
Laboratory, Center for Cancer Research, Frederick National Laboratory for Cancer Research, Frederick, Maryland
21702, United States
4. Basic
Research Program, SAIC-Frederick, Frederick,
Maryland 21702, United States