1. Manchester Institute of Biotechnology, University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K.
2. School of Chemistry, University of Manchester, Chemistry Building, Oxford Road, Manchester M13 9PL, U.K.
3. Innovation/Biodomain, Shell International Exploration and Production, Westhollow Technology Center, 3333 Highway 6 South, Houston, Texas 77082-3101, United States