EC - Amylosucrase

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IntEnz Enzyme Nomenclature


Accepted name:
Other names:
sucrose-1,4-sucrose:1,4-α-D-glucan 4-α-D-glucosyltransferase-glucan glucosyltransferase
sucrose—glucan glucosyltransferase
sucrose:1,4-α-D-glucan 4-α-D-glucosyltransferase
Systematic name:
sucrose:(1→4)-α-D-glucan 4-α-D-glucosyltransferase



The glucansucrases transfer a D-glusosyl residue from sucrose to a glucan chain. They are classified based on the linkage by which they attach the transferred residue. In some cases, in which the enzyme forms more than one linkage type, classification relies on the relative proportion of the linkages that are generated. This enzyme extends the glucan chain by an α(1→4) linkage.

Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , UniPathway
Structural data: CSA , EC2PDB
Gene Ontology: GO:0047669
CAS Registry Number: 9032-11-5


  1. Feingold, D.S., Avigad, G. and Hestrin, S.
    Enzymic synthesis and reactions of a sucrose isomer α-D-galactopyranosyl-β-D-fructofuranoside.
    J. Biol. Chem. 224 : 295-307 (1957). [PMID: 13398406]
  2. Hehre, E.J.
    Enzymic synthesis of polysaccharides: a biological type of polymerization.
    Adv. Enzymol. Relat. Subj. Biochem. 11 : 297-337 (1951). [PMID: 24540594]
  3. Hehre, E.J., Hamilton, D.M. and Carlson, A.S.
    Synthesis of a polsaccharide of the starch glycogen class from sucrose by a cell-free, bacterial enzyme system (amylosucrase).
    J. Biol. Chem. 177 : 267-279 (1949). [PMID: 18107430]

[EC created 1961]