1. Fungal Genetics and Biotechnology Department of Microbiology University of Helsinki University of Helsinki Biocenter 1 PO Box 56 Viikinkaari 9 Helsinki FI‐00014 Finland
2. Department of Chemistry University of Helsinki P.O. Box 55 A. I. Virtasen Aukio 1 Helsinki FI‐00014 Finland
3. EaStCHEM School of Chemistry University of St Andrews Fife UK