1. Division of Biochemistry, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
2. Center for Renewable Energy and Sustainable Technology, International Cooperative Research Project, Japan Science and Technology Corporation, Tokyo 108-8639, Japan
3. Division of Molecular Neurobiology, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
4. Calcium Oscillation Project, International Cooperative Research Project, Japan Science and Technology Corporation, Tokyo 108-8639, Japan
5. Department of Veterinary and Animal Sciences, Paige Laboratory, University of Massachusetts, Amherst, MA 01003
6. Division of Gene Expression and Regulation, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
7. RIKEN Brain Science Institute, Wako, Saitama 351-0198, Japan