1. Department of Chemistry, Manchester Institute of Biotechnology, University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K.
2. Prozomix Ltd, Building 4, West End Ind. Estate, Haltwhistle NE49 9HA, U.K.
3. Sterling Pharma Solutions, Sterling Place, Dudley, Northumberland NE23 7QG, U.K.