1. Department of Molecular Biology, Swedish University of Agricultural Sciences, POB 590, SE-754 21 Uppsala, Sweden, Department of Biomaterials Sciences, Graduate School for Agricultural and Life Sciences, The University of Tokyo, Japan, Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, S-106 91 Stockholm, Sweden, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden, and Molecular Structural Analysis, German Cancer Research Center, INF 280,...