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Information on EC 3.2.1.154 - fructan beta-(2,6)-fructosidase

for references in articles please use BRENDA:EC3.2.1.154

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IUBMB Comments

Possesses one of the activities of EC 3.2.1.80, fructan β-fructosidase. While the best substrates are the levan-type fructans such as 6-kestotriose [β-D-fructofuranosyl-(2→6)-β-D-fructofuranosyl α-D-glucopyranoside] and 6,6-kestotetraose [β-D-fructofuranosyl-(2→6)-β-D-fructofuranosyl-(2→6)-β-D-fructofuranosyl α-D-glucopyranoside], some (but not all) inulin-type fructans can also be hydrolysed, but more slowly [cf. EC 3.2.1.153, fructan β-(2,1)-fructosidase). Sucrose, while being a very poor substrate, can substantially inhibit enzyme activity in some cases.

The expected taxonomic range for this enzyme is: Bacteria, Eukaryota

Synonyms
6-fructan exohydrolase, suc:fructan 6-fructosyltransferase, more

REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
6G,6,6-kestopentaose + H2O = 6G,6-kestotetraose + beta-D-fructofuranose
show the reaction diagram
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