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Fructoside
Fructosides are glycosides where the glycone group is fructose. Fructosyl transferases In enzymology, enzymes that add a fructose group to a molecule are called ''fructosyl-transferases'', ''beta-D-fructofuranosyl transferases'' or ''fructotranferases''. Examples are: * aldose beta-D-fructosyltransferase * 2,1-fructan:2,1-fructan 1-fructosyltransferase * 6G-fructosyltransferase * Inulin fructotransferase (DFA-I-forming) * Inulin fructotransferase (DFA-III-forming) * Levan fructotransferase (DFA-IV-forming) * Levansucrase Levansucrase () is an enzyme that catalyzes the chemical reaction :sucrose + (2,6-beta-D-fructosyl)n \rightleftharpoons glucose + (2,6-beta-D-fructosyl)n+1 Thus, the two substrates of this enzyme are sucrose and (2,6-beta-D-fructosyl)n, whereas ... References Glycosides by glycone type {{biochem-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aldose Beta-D-fructosyltransferase
In enzymology, an aldose beta-D-fructosyltransferase () is an enzyme that catalyzes the chemical reaction :alpha-D-aldosyl1 beta-D-fructoside + D-aldose2 \rightleftharpoons D-aldose1 + alpha-D-aldosyl2 beta-D-fructoside Thus, the two substrates of this enzyme are alpha-D-aldosyl1 beta-D-fructoside and D-aldose2, whereas its two products are D-aldose1 and alpha-D-aldosyl2 beta-D-fructoside. This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name A systematic name is a name given in a systematic way to one unique group, organism, object or chemical substance, out of a specific population or collection. Systematic names are usually part of a nomenclature. A semisystematic name or semitrivial ... of this enzyme class is alpha-D-aldosyl-beta-D-fructoside:aldose 1-beta-D-fructosyltransferase. References * EC 2.4.1 Enzymes of unknown structure {{2.4-enzyme-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glycoside
In chemistry, a glycoside is a molecule in which a sugar is bound to another functional group via a glycosidic bond. Glycosides play numerous important roles in living organisms. Many plants store chemicals in the form of inactive glycosides. These can be activated by enzyme hydrolysis, which causes the sugar part to be broken off, making the chemical available for use. Many such plant glycosides are used as medications. Several species of ''Heliconius'' butterfly are capable of incorporating these plant compounds as a form of chemical defense against predators. In animals and humans, poisons are often bound to sugar molecules as part of their elimination from the body. In formal terms, a glycoside is any molecule in which a sugar group is bonded through its anomeric carbon to another group via a glycosidic bond. Glycosides can be linked by an O- (an ''O-glycoside''), N- (a ''glycosylamine''), S-(a ''thioglycoside''), or C- (a '' C-glycoside'') glycosidic bond. According to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glycone
In chemistry, a glycoside is a molecule in which a sugar is bound to another functional group via a glycosidic bond. Glycosides play numerous important roles in living organisms. Many plants store chemicals in the form of inactive glycosides. These can be activated by enzyme hydrolysis, which causes the sugar part to be broken off, making the chemical available for use. Many such plant glycosides are used as medications. Several species of ''Heliconius'' butterfly are capable of incorporating these plant compounds as a form of chemical defense against predators. In animals and humans, poisons are often bound to sugar molecules as part of their elimination from the body. In formal terms, a glycoside is any molecule in which a sugar group is bonded through its anomeric carbon to another group via a glycosidic bond. Glycosides can be linked by an O- (an ''O-glycoside''), N- (a ''glycosylamine''), S-(a ''thioglycoside''), or C- (a ''C-glycoside'') glycosidic bond. According to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fructose
Fructose, or fruit sugar, is a Ketose, ketonic monosaccharide, simple sugar found in many plants, where it is often bonded to glucose to form the disaccharide sucrose. It is one of the three dietary monosaccharides, along with glucose and galactose, that are absorbed by the gut directly into the blood of the portal vein during digestion. The liver then converts both fructose and galactose into glucose, so that dissolved glucose, known as blood sugar, is the only monosaccharide present in circulating blood. Fructose was discovered by French chemist Augustin-Pierre Dubrunfaut in 1847. The name "fructose" was coined in 1857 by the English chemist William Allen Miller. Pure, dry fructose is a sweet, white, odorless, crystalline solid, and is the most water-soluble of all the sugars. Fructose is found in honey, tree and vine fruits, flowers, Berry, berries, and most List of root vegetables, root vegetables. Commercially, fructose is derived from sugar cane, sugar beets, and maize. Hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
6G-fructosyltransferase
In enzymology, a 6G-fructosyltransferase () is an enzyme that catalyzes the chemical reaction : 1)-">-beta-D-fructofuranosyl-(2->1)-+1 alpha-D-glucopyranoside + 1)-">-beta-D-fructofuranosyl-(2->1)-+1 alpha-D-glucopyranoside \rightleftharpoons 1)-">-beta-D-fructofuranosyl-(2->1)- alpha-D-glucopyranoside + 1)-">-beta-D-fructofuranosyl-(2->1)-+1 beta-D-fructofuranosyl-(2->6)-alpha-D-glucopyranoside (m > 0; n >\rightleftharpoons 0) Thus, the two substrates of this enzyme are -beta-D-fructofuranosyl-(2->1)-+1 alpha-D-glucopyranoside"> 1)-">-beta-D-fructofuranosyl-(2->1)-+1 alpha-D-glucopyranoside and -beta-D-fructofuranosyl-(2->1)-+1 alpha-D-glucopyranoside"> 1)-">-beta-D-fructofuranosyl-(2->1)-+1 alpha-D-glucopyranoside, whereas its 4 products are -beta-D-fructofuranosyl-(2->1)- alpha-D-glucopyranoside"> 1)-">-beta-D-fructofuranosyl-(2->1)- alpha-D-glucopyranoside, -beta-D-fructofuranosyl-(2->1)-+1"> 1)-">-beta-D-fructofuranosyl-(2->1)-+1, 6)-alpha-D-glucopyranoside (m > 0; n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inulin Fructotransferase (DFA-I-forming)
The enzyme inulin fructotransferase (DFA-I-forming) () catalyzes the following process: :Produces α-D-fructofuranose β-D-fructofuranose 1,2′:2,1′-dianhydride (DFA I) by successively eliminating the diminishing (2→1)-β-D-fructan (inulin) chain from the terminal D-fructosyl-D-fructosyl disaccharide. This enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides. The systematic name A systematic name is a name given in a systematic way to one unique group, organism, object or chemical substance, out of a specific population or collection. Systematic names are usually part of a nomenclature. A semisystematic name or semitrivial ... of this enzyme class is (2→1)-β-D-fructan lyase (α-Dfructofuranose-β-D-fructofuranose-1,2′:2,1′-dianhydride-forming). Other names in common use include inulin fructotransferase (DFA-I-producing), inulin fructotransferase (depolymerizing,, difructofuranose-1,2':2',1-dianhydride-forming), inul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inulin Fructotransferase (DFA-III-forming)
The enzyme inulin fructotransferase (DFA-III-forming) () 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 A systematic name is a name given in a systematic way to one unique group, organism, object or chemical substance, out of a specific population or collection. Systematic names are usually part of a nomenclature. A semisystematic name or semitrivial ... 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, inul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Levan Fructotransferase (DFA-IV-forming)
The enzyme levan fructotransferase (DFA-IV-forming) () catalyzes the following process: :Produces di-β-D-fructofuranose 2,6′:2′,6-dianhydride (DFA IV) by successively eliminating the diminishing (2→6)-β-D-fructan (levan) chain from the terminal D-fructosyl-D-fructosyl disaccharide This enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides. The systematic name A systematic name is a name given in a systematic way to one unique group, organism, object or chemical substance, out of a specific population or collection. Systematic names are usually part of a nomenclature. A semisystematic name or semitrivial ... of this enzyme class is 2→6-β-D-fructan lyase (di-β-D-fructofuranose-2,6′:2′,6-dianhydride-forming). Other names in common use include 2,6-β-D-fructan D-fructosyl-D-fructosyltransferase (forming, di-β-Dfructofuranose 2,6′:2′,6-dianhydride), and levan fructotransferase. References * * * EC 4. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Levansucrase
Levansucrase () is an enzyme that catalyzes the chemical reaction :sucrose + (2,6-beta-D-fructosyl)n \rightleftharpoons glucose + (2,6-beta-D-fructosyl)n+1 Thus, the two substrates of this enzyme are sucrose and (2,6-beta-D-fructosyl)n, whereas its two products are glucose and (2,6-beta-D-fructosyl)n+1. This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is sucrose:2,6-beta-D-fructan 6-beta-D-fructosyltransferase. Other names in common use include sucrose 6-fructosyltransferase, beta-2,6-fructosyltransferase, and beta-2,6-fructan:D-glucose 1-fructosyltransferase. This enzyme participates in starch and sucrose metabolism and two-component system - general. Structural studies As of late 2007, 3 structures A structure is an arrangement and organization of interrelated elements in a material object or system, or the object or system so organized. Material structures include man-made objects ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
