1. Department of Biochemistry and Molecular Dentistry, and
2. Department of Orthodontics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan,
3. Advanced Research Center for Oral and Craniofacial Sciences, Okayama University Dental School, Okayama, Japan, and
4. Department of Membrane Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan