ENZYME entry: EC 3.2.1.153

Accepted Name
Fructan beta-(2,1)-fructosidase.
Alternative Name(s)
1-FEH II.
1-FEH w1.
1-FEH w2.
1-fructan exohydrolase.
Beta-(2,1)-D-fructan fructohydrolase.
Beta-(2-1)-D-fructan fructohydrolase.
Beta-(2-1)-linkage-specific fructan-beta-fructosidase.
Beta-(2-1)fructan exohydrolase.
Inulinase.
Reaction catalysed
Hydrolysis of terminal, non-reducing (2->1)-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 inulin-type fructans, such as 1-kestose (beta-D-fructofuranosyl-(2->1)-beta-D-fructofuranosyl alpha-D-glucopyranoside) and 1,1-nystose (beta-D-fructofuranosyl- (2->1)-beta-D-fructofuranosyl-(2->1)-beta-D-fructofuranosyl alpha-D- glucopyranoside), some (but not all) levan-type fructans can also be hydrolyzed, but more slowly (see EC 3.2.1.154).
  • Sucrose, while being a very poor substrate, can substantially inhibit enzyme activity in some cases.
Cross-references
BRENDA3.2.1.153
EC2PDB3.2.1.153
ExplorEnz3.2.1.153
PRIAM enzyme-specific profiles3.2.1.153
KEGG Ligand Database for Enzyme Nomenclature3.2.1.153
IUBMB Enzyme Nomenclature3.2.1.153
IntEnz3.2.1.153
MEDLINEFind literature relating to 3.2.1.153
MetaCyc3.2.1.153
UniProtKB/Swiss-Prot
Q84PN8, 1FEH1_WHEAT;  Q84LA1, 1FEH2_WHEAT;  B6DZC8, 1FEH3_WHEAT;  
B6DZD1, 1FEH_AEGSP;  B6DZD2, 1FEH_AEGTA;  D2IGW7, 1FEH_BROPI;  
Q70AT7, 1FEH_HORVU;  B6DXP5, 1FEH_LEYCH;  B6DZD0, 1FEH_TRIUA;  

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