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Gene ontology
Version 2014-12-22
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Details for inulin fructotransferase (DFA-I-forming) activity
4.2.2.17
Gene ontology ID
GO:0033997
Definition
Catalysis of the reaction: [(2->1)-beta-D-fructosyl](n) = [(2->1)-beta-D-fructosyl](n-1) + alpha-D-fructofuranose-beta-D-fructofuranose 1,2':1,2'-dianhydride. This reaction is the production of 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
Synonyms
1. 2,1-beta-D-fructan lyase (alpha-D-fructofuranose-beta-D-fructofuranose-1,2':2,1'-dianhydride-forming) activity
2. inulin D-fructosyl-D-fructosyltransferase (1,2':1',2-dianhydride-forming) activity
3. inulin D-fructosyl-D-fructosyltransferase (forming alpha-D-fructofuranose beta-D-fructofuranose 1,2':1',2-dianhydride) activity
4. inulin fructotransferase (depolymerizing, difructofuranose-1,2':2',1-dianhydride-forming) activity
5. inulin fructotransferase (DFA-I-producing) activity
References
1. EC 4.2.2.17
2. MetaCyc 4.2.2.17-RXN
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