Inulin fructotransferase (DFA-III-forming)

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Inulin fructotransferase (DFA-III-forming)
Identifiers
EC no. 4.2.2.18
CAS no. 50936-42-0
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The enzyme inulin fructotransferase (DFA-III-forming) (EC 4.2.2.18) catalyzes the following process:

Produces α-D-fructofuranose β-D-fructofuranose 1,2′:2,3′-dianhydride (DFA III) by successively eliminating the diminishing (2→1)-β-D-fructan (inulin) chain from the terminal D-fructosyl-D-fructosyl disaccharide.

Nomenclature

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).

Related Research Articles

<span class="mw-page-title-main">Fructan</span> Fructose polymer

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.

<span class="mw-page-title-main">Fructoside</span>

Fructosides are glycosides where the glycone group is fructose.

Glucan 1,4-α-glucosidase Enzyme that hydrolyses terminal α-1,4-D-glucose residues of polysaccharides

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

<span class="mw-page-title-main">Threonine aldolase</span>

The enzyme threonine aldolase is an enzyme that catalyzes the chemical reaction

<span class="mw-page-title-main">Tryptophanase</span> Enzyme that converts tryptophan into indole

The enzyme tryptophanase (EC 4.1.99.1) catalyzes the chemical reaction

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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

<span class="mw-page-title-main">Levansucrase</span>

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

<span class="mw-page-title-main">Glucan 1,3-β-glucosidase</span>

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.

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Fructan beta-(2,1)-fructosidase is an enzyme with systematic name beta-(2->1)-D-fructan fructohydrolase. This enzyme catalyses the following chemical reaction

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References