Information on EC 2.4.1.245 - alpha,alpha-trehalose synthase

Requires Mg²⁺ for maximal activity . The enzyme-catalysed reaction is reversible . In the reverse direction to that shown above, the enzyme is specific for α,α-trehalose as substrate, as it cannot use α- or β-paranitrophenyl glucosides, maltose, sucrose, lactose or cellobiose . While the enzymes from the thermophilic bacterium Rubrobacter xylanophilus and the hyperthermophilic archaeon Pyrococcus horikoshii can use ADP-, UDP- and GDP-α-D-glucose to the same extent [2,3], that from the hyperthermophilic archaeon Thermococcus litoralis has a marked preference for ADP-α-D-glucose and that from the hyperthermophilic archaeon Thermoproteus tenax has a marked preference for UDP-α-D-glucose .