3.2.1.B8: malto-alpha-amylase (reducing end)
This is an abbreviated version!
For detailed information about malto-alpha-amylase (reducing end), go to the full flat file.
Reaction
hydrolysis of (1->4)-alpha-D-glucosidic linkages in polysaccharides so as to remove successive alpha-maltose residues from the reducing ends of the chains =
Synonyms
cyclodextrinase, MAase, maltogenic amylase, MalZ, More, SMMA, TMG, YvdF
ECTree
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Natural Substrates Products on EC 3.2.1.B8 - malto-alpha-amylase (reducing end)
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NATURAL SUBSTRATE 
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate)
(Substrate)
LITERATURE
(Substrate)
(Substrate)
COMMENTARY
(Product)
(Product)
LITERATURE
(Product)
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
r=reversible
ir=irreversible
?=not specified
linear maltoheptaose + H2O
maltose + D-glucose
-
SMMA preferentially hydrolyzed the first and second glycosidic bonds from the reducing end
primary products
-
?
linear maltohexaose + H2O
maltose + D-glucose
-
best substrate
primary products
-
?
linear maltooligosaccharide + H2O
maltose + D-glucose
-
maximal activity of SMMA toward G6, but almost no activity toward G3
primary products
-
?
additional information
?
-
TMG is an exo-acting glucosidase possessing the characteristics of both CD-/pullulan hydrolyzing enzyme and alpha-glucosidase. It hydrolyzes various maltodextrins including maltotriose to maltoheptaose and cyclomaltodextrins to mainly glucose and maltose, but it cannot hydrolyze pullulan, but acarbose
-
-
?
alpha-cyclodextrin + H2O
maltose + D-glucose
-
-
primary products
-
?
gamma-cyclodextrin + H2O
maltose + D-glucose
-
-
primary products
-
?
