1. Department of Biomedical Chemistry, Hiroshima University Graduate School of Biomedical Science, Hiroshima, Japan.
2. Departments of Cardiovascular Physiology and Medicine, Hiroshima University Graduate School of Biomedical Science, Hiroshima, Japan.
3. Present address: Department of Biochemistry, Tohoku University Graduate School of Medicine, Sendai, Japan.
4. Department of Molecular Genetics, Alton Ochsner Medical Foundation and Department of Biochemistry and Molecular Biology, Louisiana State University Medical Center, New Orleans, Louisiana.