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Category:GO:0033996 ! levan fructotransferase (DFA-IV-forming) activity
name: levan fructotransferase (DFA-IV-forming) activity
namespace: molecular_function
def: "Catalysis of the reaction: beta-D-fructopyranosyl-(2->6)-[D-fructofuranosyl-(2->6)]n-D-fructofuranoside = beta-D-fructopyranosyl-(2->6)-[D-fructofuranosyl-(2->6)](n-1)-D-fructofuranoside + di-beta-D-fructofuranose 2,6':2',6-dianhydride. This reaction is the production of di-beta-D-fructofuranose 2,6':2',6-dianhydride (DFA IV) by successively eliminating the diminishing (2->6)-beta-D-fructan (levan) chain from the terminal D-fructosyl-D-fructosyl disaccharide." [EC:4.2.2.16]
synonym: "2,6-beta-D-fructan D-fructosyl-D-fructosyltransferase (forming di-beta-D-fructofuranose 2,6':2',6-dianhydride) activity" RELATED [EC:4.2.2.16]
synonym: "2,6-beta-D-fructan lyase (di-beta-D-fructofuranose-2,6':2',6-dianhydride-forming) activity" RELATED [EC:4.2.2.16]
synonym: "levan fructotransferase activity" RELATED [EC:4.2.2.16]
xref: EC:4.2.2.16
xref: MetaCyc:4.2.2.16-RXN
is_a: GO:0016837 ! carbon-oxygen lyase activity, acting on polysaccharides
AmiGO
<GOterm>GO:0033996</GOterm>
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