1. Department of Biochemistry,
UMCN 286, Nijmegen Centre for Molecular Life Sciences, Radboud University
Nijmegen Medical Centre, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands
2. Department of BioOrganic Photochemistry,
Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300
RA, Leiden, The Netherlands