1. Department of Agricultural Biotechnology; Seoul National University; Seoul 151-921 Korea
2. Department of Biochemistry; University of Wisconsin-Madison; Madison WI 53706
3. Center for Eukaryotic Structural Genomics; University of Wisconsin-Madison; Madison WI 53706
4. Department of Biochemistry and Cell biology; Rice University; Houston TX 77005
5. Center for Food and Bioconvergence; Seoul National University; Seoul 151-921 Korea
6. Research Institute of Agriculture and Life Sciences; Seoul National University; Seoul 151-921 Korea