View source for Inulin fructotransferase (DFA-I-forming)

{{infobox enzyme
| Name       = Inulin fructotransferase (DFA-I-forming)
| EC_number  = 4.2.2.17
| CAS_number = 125008-19-7
| GO_code    =
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The [[enzyme]] '''inulin fructotransferase (DFA-I-forming)''' ({{EnzExplorer|4.2.2.17}}) [[catalysis|catalyzes]] the following process:
:Produces α-<small>D</small>-fructofuranose β-<small>D</small>-fructofuranose 1,2′:2,1′-dianhydride (DFA I) by successively eliminating the diminishing (2→1)-β-<small>D</small>-fructan (inulin) chain from the terminal <small>D</small>-fructosyl-<small>D</small>-fructosyl disaccharide.
This enzyme belongs to the family of [[lyase]]s, specifically those carbon-oxygen lyases acting on polysaccharides.  The [[List of enzymes|systematic name]] of this enzyme class is '''(2→1)-β-<small>D</small>-fructan lyase (α-<small>D</small>fructofuranose-β-<small>D</small>-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 <small>D</small>-fructosyl-D-fructosyltransferase''', '''(1,2':1',2-dianhydride-forming)''', '''inulin <small>D</small>-fructosyl-<small>D</small>-fructosyltransferase (forming''', and '''α-<small>D</small>-fructofuranose β-<small>D</small>-fructofuranose 1,2':1',2-dianhydride)'''.
==References==
{{reflist|1}}
* {{cite journal | vauthors = Seki K, Haraguchi K, Kishimoto M, Kobayashi S, Kainuma K | date = 1989 | title = Purification and properties of a novel inulin fructotransferase (DFA I-producing) from Arthrobacter globiformis S14-3 | journal = Agric. Biol. Chem.  | volume = 53 | issue = 8 | pages = 2089&ndash;2094 | doi=10.1271/bbb1961.53.2089| doi-access = free }}
{{Carbon-oxygen lyases}}
{{Enzymes}}
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[[Category:EC 4.2.2]]
[[Category:Enzymes of unknown structure]]
{{4.2-enzyme-stub}}