[1] Graduate School of Pharmaceutical Sciences,
[2] University of Tokyo,undefined
[3] Bunkyo-ku,undefined
[4] Tokyo 113-0033,undefined
[5] Japan,undefined
[6] Rowe Program in Genetics,undefined
[7] Department of Biological Chemistry,undefined
[8] University of California,undefined
[9] Davis,undefined
[10] California 95616,undefined
[11] USA,undefined