[1] Department of Biochemistry, Tulane University School of Medicine, New Orleans, LA 70112, United States
[2] Wake Forest Univ. School of Medicine, Winston-Salem, NC 27157-1016, United States
[3] Dept. of Applied Biological Sciences, Faculty of Agriculture, Saga University, Saga 840, Japan
[4] Department of Bio-Organic Chemistry, Gifu University, Gifu 501-11, Japan
[5] Dept. of Biochemistry, Tulane University School of Medicine, 1430 Tulane Ave., New Orleans, LA 70112, United States