Difructose-anhydride synthase

Difructose-anhydride synthase
difructose-anhydride synthase
Identifiers
EC number 3.2.1.134
CAS number 121479-55-8
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum
Gene Ontology AmiGO / EGO

In enzymology, a difructose-anhydride synthase (EC 3.2.1.134) is an enzyme that catalyzes the chemical reaction

bis-D-fructose 2',1:2,1'-dianhydride + H2O \rightleftharpoons inulobiose

Thus, the two substrates of this enzyme are bis-D-fructose 2',1:2,1'-dianhydride and H2O, whereas its product is inulobiose.

This enzyme belongs to the family of hydrolases, specifically those glycosidases that hydrolyse O- and S-glycosyl compounds. The systematic name of this enzyme class is bis-D-fructose 2',1:2,1'-dianhydride fructohydrolase. This enzyme is also called inulobiose hydrolase.

References

  • Matsuyama T and Tanaka K (1989). "On the enzyme of Aspergillus fumigatus producing difructose anhydride I from inulobiose". Agric. Biol. Chem. 53: 831–832. 
  • Matsuyama T, Tanaka K, Mashiko M, Kanamoto M (Tokyo). "Enzymic formation of di-D-fructose 1,2'; 2,1' dianhydride from inulobiose by Aspergillus fumigatus". J. Biochem. (4): 1325–8. PMID 6757245. 
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