Expasy logo

ENZYME

ENZYME entry: EC 2.4.1.161

Accepted Name
oligosaccharide 4-alpha-D-glucosyltransferase
Alternative Name(s)
alpha-1,4-transglucosylase
amylase III
Reaction catalysed
Transfers the non-reducing terminal alpha-D-glucose residue from a (1->4)-alpha-D-glucan to the 4-position of a free glucose or of a glucosyl residue at the non-reducing terminus of a (1->4)-alpha-D-glucan, thus bringing about the rearrangement of oligosaccharides
Comment(s)
  • The enzyme acts on amylose, amylopectin, glycogen and maltooligosaccharides.
  • No detectable free glucose is formed, indicating the enzyme does not act as a hydrolase.
  • The enzyme from the bacterium Cellvibrio japonicus has the highest activity with maltotriose as a donor, and also accepts maltose, while the enzyme from amoeba does not accept maltose.
  • Oligosaccharides with 1->6 linkages cannot function as donors, but can act as acceptors.
  • Unlike EC 2.4.1.25, this enzyme can transfer only a single glucosyl residue.
Cross-references
BRENDA2.4.1.161
EC2PDB2.4.1.161
ExplorEnz2.4.1.161
PRIAM enzyme-specific profiles2.4.1.161
KEGG Ligand Database for Enzyme Nomenclature2.4.1.161
IUBMB Enzyme Nomenclature2.4.1.161
IntEnz2.4.1.161
MEDLINEFind literature relating to 2.4.1.161
MetaCyc2.4.1.161
Rhea expert-curated reactions2.4.1.161
UniProtKB/Swiss-Prot
B3PEE6, OL4AG_CELJU

View entry in original ENZYME format
View entry in raw text format (no links)
All UniProtKB/Swiss-Prot entries referenced in this entry, with possibility to download in different formats, align etc.
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.-.-.-