1. Molecular Structure Section, Laboratory of Experimental and Computational Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, Computational Technologies Laboratory, Screening Technologies Branch, Developmental Therapeutics Program, National Cancer Institute-Frederick, National Institutes of Health, Frederick, Maryland 21702, and Center for Computational Biology and Bioinformatics and Department of Molecular Genetics and Biochemistry,...