Dextrin dextranase

In enzymology, a dextrin dextranase is an enzyme that catalyzes the chemical reaction

(1,4-alpha-D-glucosyl)n + (1,6-alpha-D-glucosyl)m rightleftharpoons (1,4-alpha-D-glucosyl)n-1 + (1,6-alpha-D-glucosyl)m+1

Thus, the two substrates of this enzyme are (1,4-alpha-D-glucosyl)n and (1,6-alpha-D-glucosyl)m, whereas its two products are (1,4-alpha-D-glucosyl)n-1 and (1,6-alpha-D-glucosyl)m+1.

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is 1,4-alpha-D-glucan:1,6-alpha-D-glucan 6-alpha-D-glucosyltransferase. Other names in common use include dextrin 6-glucosyltransferase, and dextran dextrinase.


  • Hehre EJ "Enzymic synthesis of polysaccharides: a biological type of polymerization". Adv. Enzymol. Relat. Subj. Biochem. 11 297–337.
  • Hehre EJ and Hamilton DM "Bacterial conversion of dextrin into a polysaccharide with the serological properties of dextran". Proc. Soc. Exp. Biol. Med. 71 336–339.
  • Hehre EJ and Hamilton DM "The biological synthesis of dextran from dextrins". J. Biol. Chem. 192 161–174.

External links

The CAS registry number for this enzyme class is .

Gene Ontology (GO) codes

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