1. Protein Bioinformatics Research Group, Institute of Enzymology, Research Centre for Natural Sciences , Magyar Tudósok körútja 2, Budapest 1117, Hungary
2. Department of Bioinformatics, Semmelweis University , Tűzoltó u. 7, Budapest 1094, Hungary
3. Faculty of Information Technology and Bionics, Pázmány Péter Catholic University , Práter u. 50/A, Budapest 1083, Hungary
4. ICBMS UMR CNRS 5246, University Lyon 1 , Rue Victor Grignard, Villeurbanne 69622, France
5. UMR CNRS 5086, University Lyon 1 , 7 Passage du Vercors, Lyon 69367, France
6. Structural and Computational Biology Unit, European Molecular Biology Laboratory , Meyerhofstraße 1, Heidelberg 69117, Germany