1. Department of Applied Biological Science, Faculty of Agriculture and Department of Biotechnology, United Graduate School of Agriculture, Tokyo University of Agriculture & Technology, Fuchu-shi, Tokyo 183-8509, Japan
2. Integrated Proteomics System Project, Ministry of Education, Culture, Sports, Science & Technology of Japan
3. Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Hachioji-shi, Tokyo 192-0397, Japan
4. Division of Proteomics Research, Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan