EC - 4-α-glucanotransferase

  IntEnz view ENZYME view

IntEnz Enzyme Nomenclature


Accepted name:
Other names:
debranching enzyme maltodextrin glycosyltransferase
dextrin glycosyltransferase
dextrin transglycosylase
disproportionating enzyme
1,4-α-D-glucan:1,4-α-D-glucan 4-α-D-glycosyltransferase
Systematic name:
(1→4)-α-D-glucan:(1→4)-α-D-glucan 4-α-D-glycosyltransferase



This entry covers the former separate entry for EC (amylomaltase). The plant enzyme has been termed D-enzyme. An enzymic activity of this nature forms part of the mammalian and yeast glycogen debranching system (see EC amylo-1,6-glucosidase).

Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , UniPathway
Structural data: CSA , EC2PDB
Gene Ontology: GO:0004134 , GO:0102500
CAS Registry Number: 9032-09-1
UniProtKB/Swiss-Prot: (32) [show] [UniProt]


  1. Hehre, E.J.
    Enzymic synthesis of polysaccharides: a biological type of polymerization.
    Adv. Enzymol. Relat. Subj. Biochem. 11 : 297-337 (1951).
  2. Lukomskaya, I.S.
    Synthesis of oligosaccharides with α-1,6-bonds by enzyme preparations from liver and muscle.(in Russian).
    Dokl. Akad. Nauk S.S.S.R. 129 : 1172-1175 (1959).
  3. Pazur, J.H. and Okada, S.
    The isolation and mode of action of a bacterial glucanosyltransferase.
    J. Biol. Chem. 243 : 4732-4738 (1968). [PMID: 4972097]
  4. Walker, G.J. and Whelan, W.J.
    Synthesis of amylose by potato D-enzyme.
    Nature 183 : 46 (1959).
  5. Whelan, W.H.
    Enzymic explorations of the structures of starch and glycogen.
    Biochem. J. 122 : 609-622 (1971).

[EC created 1965 (EC created 1961, incorporated 1972)]