Glucan 1,4-α-maltotriohydrolase (, exo-maltotriohydrolase, maltotriohydrolase, 1,4-α-D-glucan maltotriohydrolase) is an enzyme with systematic name 4-α-D-glucan maltotriohydrolase. It catalyses the hydrolysis of (1→4)-α-D-glucosidic linkages in amylaceous polysaccharides, to remove successive maltotriose residues from the non-reducing chain ends.
The products have the α-configuration.
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