Inulin fructotransferase (DFA-III-forming) | |||||||||
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Identifiers | |||||||||
EC no. | 4.2.2.18 | ||||||||
CAS no. | 50936-42-0 | ||||||||
Databases | |||||||||
IntEnz | IntEnz view | ||||||||
BRENDA | BRENDA entry | ||||||||
ExPASy | NiceZyme view | ||||||||
KEGG | KEGG entry | ||||||||
MetaCyc | metabolic pathway | ||||||||
PRIAM | profile | ||||||||
PDB structures | RCSB PDB PDBe PDBsum | ||||||||
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The enzyme inulin fructotransferase (DFA-III-forming) (EC 4.2.2.18) catalyzes the following process:
This enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides. The systematic name of this enzyme class is (2→1)-β-D-fructan lyase (α-D-fructofuranose-β-D-fructofuranose-1,2′:2,3′-dianhydride-forming). Other names in common use include inulin fructotransferase (DFA-III-producing), inulin fructotransferase (depolymerizing), inulase II, inulinase II, inulin fructotransferase (depolymerizing, difructofuranose-1,2′:2,3′-dianhydride-forming), inulin D-fructosyl-D-fructosyltransferase, (1,2′:2,3′-dianhydride-forming), inulin D-fructosyl-D-fructosyltransferase (forming, and α-D-fructofuranose β-D-fructofuranose 1,2′:2,3'-dianhydride).
A fructan is a polymer of fructose molecules. Fructans with a short chain length are known as fructooligosaccharides. Fructans can be found in over 12% of the angiosperms including both monocots and dicots such as agave, artichokes, asparagus, leeks, garlic, onions, yacón, jícama, barley and wheat.
Fructosides are glycosides where the glycone group is fructose.
Glucan 1,4-α-glucosidase is an enzyme located on the brush border of the small intestine with systematic name 4-α-D-glucan glucohydrolase. It catalyses the following chemical reaction
The enzyme cysteine lyase catalyzes the chemical reaction
The enzyme threonine aldolase is an enzyme that catalyzes the chemical reaction
The enzyme tryptophanase (EC 4.1.99.1) catalyzes the chemical reaction
The enzyme inulin fructotransferase (DFA-I-forming) catalyzes the following process:
The enzyme levan fructotransferase (DFA-IV-forming) catalyzes the following process:
The enzyme mannonate dehydratase (EC 4.2.1.8) catalyzes the chemical reaction
The enzyme galactolipase (EC 3.1.1.26) catalyzes the reaction
In enzymology, a 2,1-fructan:2,1-fructan 1-fructosyltransferase is an enzyme that catalyzes the chemical reaction
In enzymology, a 6G-fructosyltransferase is an enzyme that catalyzes the chemical reaction
In enzymology, an inulosucrase is an enzyme that catalyzes the chemical reaction
Levansucrase is an enzyme that catalyzes the chemical reaction
Inulinase is an enzyme with systematic name 1-β-D-fructan fructanohydrolase. It catalyses the reaction
Glucan 1,3-β-glucosidase is an enzyme with systematic name 3-β-D-glucan glucohydrolase. It catalyses the successive hydrolysis of β-D-glucose units from the non-reducing ends of (1→3)-β-D-glucans, releasing α-glucose.
Isoamylase is an enzyme with systematic name glycogen 6-α-D-glucanohydrolase. It catalyses the hydrolysis of (1→6)-α-D-glucosidic branch linkages in glycogen, amylopectin and their β-limit dextrins. It also readily hydrolyses amylopectin.
Fructan β-fructosidase is an enzyme with systematic name β-D-fructan fructohydrolase. It catalyses the hydrolysis of terminal, non-reducing (2→1)- and (2→6)-linked β-D-fructofuranose residues in fructans.
Fructan beta-(2,1)-fructosidase is an enzyme with systematic name beta-(2->1)-D-fructan fructohydrolase. This enzyme catalyses the following chemical reaction
Gellan lyase is an enzyme with systematic name gellan β-D-glucopyranosyl-(1→4)-D-glucopyranosyluronate lyase. This enzyme catalyses the following process: