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Information on EC 3.2.1.213 - galactan exo-1,6-beta-galactobiohydrolase (non-reducing end)

for references in articles please use BRENDA:EC3.2.1.213

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IUBMB Comments

The enzyme, characterized from the bacterium Bifidobacterium longum, specifically hydrolyses (1→6)-β-galactobiose from the non-reducing terminal of (1→6)-β-D-galactooligosaccharides with a degree of polymerization (DP) of 3 or higher, using an exo mode of action. The enzyme cannot hydrolyse α-L-arabinofuranosylated (1→6)-β-galactans (as found in arabinogalactans) and does not act on (1→3)-β-D- or (1→4)-β-D-galactans. cf. EC 3.2.1.164, galactan endo-1,6-β-galactosidase.

The expected taxonomic range for this enzyme is: Bifidobacterium longum subsp. longum
Reaction Schemes
Hydrolysis of (1->6)-beta-D-galactosidic linkages in arabinogalactan proteins and (1->3):(1->6)-beta-galactans to yield (1->6)-beta-galactobiose as the final product.

Synonyms
1,6gal, more

REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
Hydrolysis of (1->6)-beta-D-galactosidic linkages in arabinogalactan proteins and (1->3):(1->6)-beta-galactans to yield (1->6)-beta-galactobiose as the final product.
show the reaction diagram
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