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inulin fructotransferase Inulin fructotransferase (IFTase; EC 4.2.2.17 and EC 4.2.2.18), a member of the glycoside hydrolase family 91, catalyzes depolymerization of beta-2,1-fructans inulin by successively removing the terminal difructosaccharide units as cyclic anhydrides via intramolecular fructosyl transfer. As a result, IFTase produces DFA-I (alpha-D-fructofuranose-beta-D-fructofuranose 2',1:2,1'-dianhydride) and DFA-III (alpha-D-fructofuranose-beta-D-fructofuranose 2',1:2,3'-dianhydride). |
Jiyao W et al.(2023). "The conserved domain database in 2023.",