[1] Univ Tokushima, Sch Med, Dept Nutr, Tokushima 7708503, Japan
[2] Natl Ctr Neurol & Psychiat, Natl Inst Neurosci, Tokyo 1878502, Japan
[3] Univ Calif Irvine, Dept Physiol & Biophys, Irvine, CA 92697 USA
[4] Natl Space Dev Agcy Japan, Tokyo 1050013, Japan
[5] Natl Ctr Neurol & Psychiat, Dept Neuromuscular Res, Tokyo 1878551, Japan
[6] Univ Tokushima, Inst Enzyme Res, Div Enzyme Chem, Tokushima 7708503, Japan