Inulin fructotransferase (DFA-I-forming)

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Inulin fructotransferase (DFA-I-forming)
Identifiers
EC number 4.2.2.17
CAS number 125008-19-7
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum

In enzymology, an inulin fructotransferase (DFA-I-forming) (EC 4.2.2.17) is an enzyme that catalyzes the chemical reaction

Produces alpha-D-fructofuranose beta-D-fructofuranose 1,2':2,1'-dianhydride (DFA I) by successively eliminating the diminishing (2->1)-beta-D-fructan (inulin) chain from the terminal D-fructosyl-D-fructosyl disaccharide.

This enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides, the systematic name of this enzyme class is 2,1-beta-D-fructan lyase (alpha-D-fructofuranose-beta-D-fructofuranose-1,2':2,1'-dianhydride- forming). Other names in common use include inulin fructotransferase (DFA-I-producing), inulin fructotransferase (depolymerizing,, difructofuranose-1,2':2',1-dianhydride-forming), inulin D-fructosyl-D-fructosyltransferase, (1,2':1',2-dianhydride-forming), inulin D-fructosyl-D-fructosyltransferase (forming, and alpha-D-fructofuranose beta-D-fructofuranose 1,2':1',2-dianhydride).

References[edit]

  • K (1989). "Purification and properties of a novel inulin fructotransferase (DFA I-producing) from Arthrobacter globiformis S14-3". Agric. Biol. Chem. 53: 2089–2094. doi:10.1271/bbb1961.53.2089.