1. Departments of *Molecular Genetics and
2. Division of Molecular Biology, Nara Institute of Science and Technology, Ikoma, Nara 630-0101, Japan;
3. Molecular Biology, Osaka Medical Center for Cancer and Cardiovascular Diseases, Osaka, Osaka 537-8511, Japan;
4. Kan Research Institute, Kyoto, Kyoto 600-8815, Japan; and
5. Department of Internal Medicine and McDermott Center for Human Growth and Development, The University of Texas Southwestern Medical School, Dallas, TX 75390