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CATH Superfamily 2.160.20.10

Single-stranded right-handed beta-helix, Pectin lyase-like

The name of this superfamily has been modified since the most recent official CATH+ release (v4_2_0). At the point of the last release, this superfamily was named:

"
Single-stranded right-handed beta-helix, Pectin lyase-like
".

Functional Families

Overview of the Structural Clusters (SC) and Functional Families within this CATH Superfamily. Clusters with a representative structure are represented by a filled circle.
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FunFam 22239: Inulin fructotransferase [DFA-I-forming]

There are 4 EC terms in this cluster

Please note: EC annotations are assigned to the full protein sequence rather than individual protein domains. Since a given protein can contain multiple domains, it is possible that some of the annotations below come from additional domains that occur in the same protein, but have been classified elsewhere in CATH.

Note: The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.

EC Term Annotations Evidence
Inulin fructotransferase (DFA-I-forming). [EC: 4.2.2.17]
Produces 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.
  • This enzyme, like EC 4.2.2.16 and EC 4.2.2.18 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 description (official name).
  • Since the transfer is intramolecular, the reaction is an elimination and, hence, the enzyme is a lyase, belonging in enzyme class 4.-.-.-.
  • Formerly EC 2.4.1.200.
 58 A0A0B7GE61 A0A0B7GE61 A0A0U5P3E8 A0A0U5P3E8 A0A156R595 A0A156R595 A0A169KA98 A0A169KA98 A0A173TUU1 A0A173TUU1
(48 more...)
Inulin fructotransferase (DFA-III-forming). [EC: 4.2.2.18]
Produces alpha-D-fructofuranose beta-D-fructofuranose 1,2':2,3'-dianhydride (DFA III) by successively eliminating the diminishing (2->1)-beta-D-fructan (inulin) chain from the terminal D-fructosyl-D-fructosyl disaccharide.
  • This enzyme, like EC 4.2.2.16 and EC 4.2.2.17 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 description (official name).
  • Since the transfer is intramolecular, the reaction is an elimination and, hence, the enzyme is a lyase, belonging in enzyme class 4.-.-.-.
  • Formerly EC 2.4.1.93.
 6 F8QV43 F8QV43 O08305 O08305 Q9F235 Q9F235
Difructose-anhydride synthase. [EC: 3.2.1.134]
Bis-D-fructose 2',1:2,1'-dianhydride + H(2)O = inulobiose.
  • Produces difructose anhydride by the reverse reaction of partial hydrolysis, forming an alpha-fructosidic linkage.
 2 A0A0N9RL01 A0A0N9RL01
Transferred entry: 4.2.2.18. [EC: 2.4.1.93]
    		2 Q9FA01 Q9FA01
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