comparative anaysis with other disaccharides indicated the existence in saccharomyces cerevisiae , after induction with trehalose , of at least four systems for the uptake of alpha-methyl-d-glucoside , four systems for maltose , together with the two for trehalose , variously shared by the sugars , the total of alpha-glucoside-transporting systems being five .
C0012611
disaccharides
C0024658
maltose