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 [1,2]. Oligosaccharides with 1→6 linkages cannot function as donors, but can act as acceptors . Unlike EC 2.4.1.25, 4-α-glucanotransferase, this enzyme can transfer only a single glucosyl residue.
The expected taxonomic range for this enzyme is: Bacteria, Eukaryota
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REACTION
REACTION DIAGRAM
COMMENTARY
ORGANISM
UNIPROT
LITERATURE
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
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 [3], while the enzyme from amoeba does not accept maltose [1,2]. Oligosaccharides with 1->6 linkages cannot function as donors, but can act as acceptors [3]. Unlike EC 2.4.1.25, 4-alpha-glucanotransferase, this enzyme can transfer only a single glucosyl residue.
Substrates: transfers the nonreducing terminal alpha-D-glucose residue from a 1,4-alpha-D-glucan to the 4-position of an alpha-D-glucan, thus bringing about the hydrolysis of oligosaccharides, acts on amylose, amylopectin, glycogen and maltooligosaccharides and on 4-nitrophenol-alpha-glucoside to 4-nitrophenylmaltoheptaoside Products: hydrolysis of oligosaccharides, no detectable free glucose is formed
Substrates: transfers the nonreducing terminal alpha-D-glucose residue from a 1,4-alpha-D-glucan to the 4-position of an alpha-D-glucan, thus bringing about the hydrolysis of oligosaccharides, acts on amylose, amylopectin, glycogen and maltooligosaccharides and on 4-nitrophenol-alpha-glucoside to 4-nitrophenylmaltoheptaoside Products: -
Substrates: transfers the nonreducing terminal alpha-D-glucose residue from a 1,4-alpha-D-glucan to the 4-position of an alpha-D-glucan, thus bringing about the hydrolysis of oligosaccharides, acts on amylose, amylopectin, glycogen and maltooligosaccharides Products: -
Substrates: transfers the nonreducing terminal alpha-D-glucose residue from a 1,4-alpha-D-glucan to the 4-position of an alpha-D-glucan, thus bringing about the hydrolysis of oligosaccharides, acts on amylose, amylopectin, glycogen and maltooligosaccharides Products: -
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