1. Graduate School of Medical Science and Engineering (K.K., C.-M.O., S.P., J.N., H.K.), Korea Advanced Institute of Science and Technology, Daejeon 305–701, Republic of Korea
2. Department of Biochemistry (M.O.-I., S.N.), Kyorin University School of Medicine, Mitaka, Tokyo 181–8611, Japan
3. Department of Biochemistry (S.P.), Catholic Kwandong University College of Medicine, Gangneung, Gangwondo 210–701, Republic of Korea
4. Department of Biochemistry (J.N.), Yonsei University Wonju College of Medicine, Wonju, Gangwondo 220–701, Republic of Korea
5. Department of Genetics and Development (V.K.Y., G.K.), Columbia University Medical Center, New York, New York 10032
6. Department of Medicine (N.A.T., L.H.P.), The University of Chicago, Chicago, Illinois 60637
7. Departments of Medicine and Cell and Developmental Biology (M.W.R.), State University of New York Upstate Medical University, Syracuse, New York 13210
8. Diabetes Center (M.S.G.), Hormone Research Institute and Department of Medicine, University of California San Francisco, San Francisco, California 94143