Starch synthase
In enzymology, a starch synthase (EC2.4.1.21) is an enzyme that catalyzes the chemical reaction
Thus, the two substrates of this enzyme are ADP-glucose and a chain of D-glucose residues joined by 1,4-alpha-glycosidic bonds, whereas its two products are ADP and an elongated chain of glucose residues. Plants use these enzymes in the biosynthesis of starch.