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ENZYME entry: EC 3.2.1.154

Accepted Name
Fructan beta-(2,6)-fructosidase.
Alternative Name(s)
6-FEH.
Beta-(2-6)-fructan exohydrolase.
Levanase.
Reaction catalysed
Hydrolysis of terminal, non-reducing (2->6)-linked beta-D-fructofuranose residues in fructans
Comment(s)
  • Possesses one of the activities of EC 3.2.1.80.
  • While the best substrates are the levan-type fructans such as 6-kestotriose (beta-D-fructofuranosyl-(2->6)-beta-D-fructofuranosyl alpha-D-glucopyranoside) and 6,6-kestotetraose (beta-D- fructofuranosyl-(2->6)-beta-D-fructofuranosyl-(2->6)-beta-D- fructofuranosyl alpha-D-glucopyranoside), some (but not all) inulin- type fructans can also be hydrolyzed, but more slowly (cf. EC 3.2.1.153).
  • Sucrose, while being a very poor substrate, can substantially inhibit enzyme activity in some cases.
Cross-references
BRENDA3.2.1.154
EC2PDB3.2.1.154
ExplorEnz3.2.1.154
PRIAM enzyme-specific profiles3.2.1.154
KEGG Ligand Database for Enzyme Nomenclature3.2.1.154
IUBMB Enzyme Nomenclature3.2.1.154
IntEnz3.2.1.154
MEDLINEFind literature relating to 3.2.1.154
MetaCyc3.2.1.154
UniProtKB/Swiss-Prot
Q70XE6, 6FEH_BETVU;  Q2UXF7, 6FEH_WHEAT;  

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 3.2.1.-
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