(1âÂÂ4)-ñ-<small>D</small>-Glucan 1-ñ-<small>D</small>-glucosylmutase (, malto-oligosyltrehalose synthase, maltodextrin alpha-D-glucosyltransferase) is an enzyme with systematic name (1->4)-alpha-D-glucan 1-alpha-D-glucosylmutase. This enzyme catalyses the following chemical reaction
The enzyme from Arthrobacter sp., Sulfolobus acidocaldarius acts on (1->4)-alpha-D-glucans containing three or more (1->4)-alpha-linked D-glucose units.