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ENZYME entry: EC 2.4.1.125

Accepted Name
Sucrose--1,6-alpha-glucan 3(6)-alpha-glucosyltransferase.
Alternative Name(s)
Water-soluble-glucan synthase.
Reaction catalysed
  • Sucrose + ((1->6)-alpha-D-glucosyl)(n) <=> D-fructose + ((1->6)-alpha-D-glucosyl)(n+1)
  • Sucrose + ((1->6)-alpha-D-glucosyl)(n) <=> D-fructose + (1->3)-alpha-D-glucosyl-((1->6)-alpha-D-glucosyl)(n)
Comment(s)
  • The glucansucrases transfer a D-glucosyl 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 (1->6)-alpha-D-glucans by both alpha(1->3) and alpha(1->6) linkages, with one of the linkage types being dominant.
  • Cf. EC 2.4.1.140.
Cross-references
BRENDA2.4.1.125
EC2PDB2.4.1.125
ExplorEnz2.4.1.125
PRIAM enzyme-specific profiles2.4.1.125
KEGG Ligand Database for Enzyme Nomenclature2.4.1.125
IUBMB Enzyme Nomenclature2.4.1.125
IntEnz2.4.1.125
MEDLINEFind literature relating to 2.4.1.125
MetaCyc2.4.1.125
Rhea expert-curated reactions2.4.1.125

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.4.1.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.4.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.-.-.-