Ans. In enzymology, a dextran sucrase is a protein that catalyzes the chemical reaction sucrase. Also, Dextran sucrases are extracellular proteins that serve a dual purpose by forming the initial polymer and introducing various types of branch points – no other enzymes are needed. This enzyme is a member of the glycosyltransferases family, specifically hexosyl transferase. Sucrase:1,6-alpha-D-glucan 6-alpha-D-glucosyltransferase is the scientific name for this enzyme class. Sucrase 6-glucosyltransferase is also known as SGE, CEP, and sucrase-1,6-alpha-glucan glucosyltransferase. This enzyme is involved in the metabolism of starch and sucrase, as well as the two-component system in general.