... determines the specificity for a dehydratasealso became clear in this study.Why does DDR cross-form a complex with glyceroldehydratase, and why does GDR not cross-form acomplex with diol dehydratase? ... subunits were per-formed with the EBI SSM [56] under the pairwise three-dimensional alignment mode. Buried molecular surfaceareas were calculated with the program CNS [57], for whichthe probe ... structure,were 120 500 m)1Æcm)1 for diol dehydratase [35], 112 100m)1Æcm)1 for glycerol dehydratase [49], 58 140 m)1Æcm)1 for DDR [35], and 86 500 m)1Æcm)1 for GDR [37], respectively.Assays...