1. Department of Chemistry; Umeå University; SE-901 87 Umeå Sweden
2. Bioinformatics Infrastructure for Life Sciences (BILS); Linköping Sweden
3. U1038 INSERM/CEA/UJ; Institut de Recherches en Technologies et Sciences pour le Vivant; Grenoble Cedex 9 France
4. Department of Biological and Environmental Sciences; Gothenburg University; 40530 Gothenburg Sweden