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Information on EC 4.2.2.16 - levan fructotransferase (DFA-IV-forming)

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EC Tree
     4 Lyases
         4.2 Carbon-oxygen lyases
             4.2.2 Acting on polysaccharides
                4.2.2.16 levan fructotransferase (DFA-IV-forming)
IUBMB Comments
This enzyme, like EC 4.2.2.17 [inulin fructotransferase (DFA-I-forming)] and EC 4.2.2.18 [inulin fructotransferase (DFA-III-forming)] eliminates the fructan chain from the terminal disaccharide leaving a difructose dianhydride. These enzymes have long been known as fructotransferases, so this is retained in the accepted name. Since the transfer is intramolecular, the reaction is an elimination and, hence, the enzyme is a lyase, belonging in EC 4.
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Word Map
The enzyme appears in viruses and cellular organisms
Synonyms
lftase, levan fructotransferase, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
[levan]n = di-beta-D-fructofuranose 2,6':2',6-dianhydride + [Levan]n-2
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