作者单位:Manchester Inst Biotechnol, Sch Chem, Manchester M1 7DN, Lancs, England[1]Univ Manchester, Fac Life Sci, Manchester M13 9PL, Lancs, England[2]Univ St Andrews, Sch Biol, St Andrews KY16 9ST, Fife, Scotland[3]York St John Univ, Vice Chancellors Off, York YO31 7EX, N Yorkshire, England[4]