Affiliation: | (1) Division of Biochemistry, School of Biological Sciences, Royal Holloway and Bedford New College, University of London, Egham, Surrey, TW20 0EX, UK, GB;(2) Department of Biological Sciences, University of Durham, South Road, Durham DH1 3LE, UK, GB;(3) Advanced Technologies (Cambridge), Unit 210, Cambridge Science Park, Milton Rd., Cambridge, CB4 4WA, UK, GB |