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Information on EC 3.2.1.204 - 1,3-alpha-isomaltosidase

for references in articles please use BRENDA:EC3.2.1.204
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IUBMB Comments
The enzyme, characterized from the bacteria Bacillus sp. NRRL B-21195 and Kribbella flavida, participates in the degradation of starch. The cyclic tetrasaccharide cyclobis-(1->6)-alpha-nigerosyl is formed from starch extracellularly and imported into the cell, where it is degraded to glucose.
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The enzyme appears in viruses and cellular organisms
Reaction Schemes
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Synonyms
CADE, cycloalternan isomaltosylhydrolase, Kfla1895, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
alpha-isomaltosyl-(1->3)-isomaltose + H2O = 2 isomaltose
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(1b)
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cyclobis-(1->6)-alpha-nigerosyl + 2 H2O = 2 isomaltose
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overall reaction
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cyclobis-(1->6)-alpha-nigerosyl + H2O = alpha-isomaltosyl-(1->3)-isomaltose
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(1a)
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