1. Rensselaer Polytechnic Institute; Biological Sciences; 110 8th St. Troy New York 12180
2. Department of Bioengineering and Therapeutic Sciences; University of California; San Francisco San Francisco California 94143-2530
3. Rensselaer Polytechnic Institute; Chemistry and Chemical Biology; 110 8th St. Troy New York 12180
4. Laboratory of Computational and Structural Biology; Wadsworth Center; P.O. Box 509 Albany New York 12201-0509