1. Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, University of Gdansk , Abrahama 58, 80-307 Gdansk , Poland
2. Laboratory of Protein Structure, International Institute of Molecular and Cell Biology in Warsaw , Księcia Trojdena 4, 02-109 Warsaw , Poland
3. Centro de Investigaciones Biológicas – CSIC , E28040 Madrid , Spain