1. Institute of Biological Chemistry; Faculty of Chemistry; Währinger Straße 38 1090 Vienna Austria
2. School of Chemical Sciences; The University of Auckland; 23 Symonds St. Auckland 1142 New Zealand
3. School of Biological Sciences; The University of Auckland; 3 Symonds St. Auckland 1142 New Zealand
4. Maurice Wilkins Centre for Molecular Biodiscovery; The University of Auckland; 3 Symonds St. Auckland 1142 New Zealand