1. Division of Hematology, The Children's Hospital of Philadelphia, and University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, Joseph Stokes, Jr., Research Institute, Protein Core Facility, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, Department of Bioinformatics, Chiba University Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan, Department of Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, and Cardeza...