1. Centro de Química e Bioquímica , Departamento de Química e Bioquímica, Faculdade de Ciências , Universidade de Lisboa , Ed. C8, Piso 5 , Campo Grande, 1749-016 Lisboa , Portugal
2. European Bioinformatics Institute (EMBL-EBI), Wellcome Genome Campus , Hinxton, Cambridge CB10 1SD , United Kingdom
3. Beilstein-Institut zur Förderung der Chemischen Wissenschaften , Trakehner Str. 7 – 9 , 60487 Frankfurt , Germany
4. Instituto Superior Técnico , Universidade de Lisboa, Av. Rovisco Pais , 1041-001 Lisboa , Portugal
5. Department of Chemistry , The American University , Washington DC , USA
6. School of Biological and Chemical Sciences , Queen Mary University of London , Mile End Road , London E1 4NS , United Kingdom
7. Department for Bioinformatics and Biochemistry, BRICS, Braunschweig Integrated Centre for Systems Biology , Technische Universität Braunschweig , Rebenring 56 , 38106 Braunschweig , Germany