Affiliation: | 1. NCMH Physical Biochemistry Laboratory, University of Nottingham, School of Biosciences , Sutton Bonington , LE12 5RD , UK Steve.Harding@nottingham.ac.uk;3. NCMH Physical Biochemistry Laboratory, University of Nottingham, School of Biosciences , Sutton Bonington , LE12 5RD , UK |