1. Laboratory of Genetics and Physiology (J.M.S., K.M., L.H.), National Institutes of Health, Bethesda, Maryland 20892
2. Department of Biochemistry (K.M.), School of Dentistry, University of Tokushima, Tokushima 770-8504, Japan
3. Department of Molecular Genetics, Biochemistry, and Microbiology (M.F., G.S.), University of Cincinnati, Cincinnati, Ohio 45221