Aldose

Aldose

An aldose is a monosaccharide (a simple sugar) containing one aldehyde group per molecule and having a chemical formula of the form Cn(H2O)n(n>=3).

With only 3 carbon atoms, glyceraldehyde is the simplest of all aldoses.

Aldoses isomerize to ketoses in the Lobry-de Bruyn-van Ekenstein transformation. Aldose differs from ketose in that it has a carbonyl group at the end of the carbon chain whereas the carbonyl group of a ketose is in the middle; this fact allows them to be chemically differentiated through Seliwanoff's test.

List of aldoses

* Triose: glyceraldehyde, dihydroxylacetone
* Tetroses: erythrose, threose
* Pentoses: ribose, arabinose, xylose, lyxose
* Hexoses: allose, altrose, glucose, mannose, gulose, idose, galactose, talose

See also

* Carbohydrate
* Ketose
* Monosaccharide


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  • aldose — [ aldoz ] n. m. • 1890; de ald(éhyde) et 1. ose ♦ Chim. Sucre contenant un groupe aldéhydique. ● aldose nom masculin Ose renfermant une fonction aldéhyde. aldose [aldoz] n. m. ÉTYM. 1904, in Rev. gén. des sc., no 14, p. 707; de ald(éhyde), et… …   Encyclopédie Universelle

  • aldose — |ó| s. f. Nome genérico dos glicídios que apresentam funções de aldeído …   Dicionário da Língua Portuguesa

  • aldose — [al′dōs΄] n. [ ALD(EHYDE) + OSE2] Chem. any sugar containing the aldehyde group, CHO …   English World dictionary

  • Aldose — Projection de Fischer du D glycéraldéhyde, un aldose triose. Les aldoses sont l une des deux familles d oses avec les cétoses. La fonction carbonyle est une fonction aldéhyde, et elle définit la position du premier carbone. Si le groupe c …   Wikipédia en Français

  • aldose — aldozė statusas T sritis chemija apibrėžtis Monosacharidas, turintis aldehido grupę. formulė Formulę žr. priede. priedas( ai) Grafinis formatas atitikmenys: angl. aldose rus. альдоза …   Chemijos terminų aiškinamasis žodynas

  • Aldose reductase — (or aldehyde reductase) is an enzyme in carbohydrate metabolism that converts an aldose to a sugar alcohol, using NADPH as the reducing agent.The enzyme can be inhibited by aldose reductase inhibitors.ReactionsSpecific reactions catalyzed by this …   Wikipedia

  • Aldose reductase inhibitor — Aldose reductase inhibitors are a class of drugs being studied as a way to prevent eye and nerve damage in people with diabetes. MechanismTheir target, aldose reductase, is an enzyme that is normally present in many other parts of the body, and… …   Wikipedia

  • aldose reductase — aldose reductase. См. альдоредуктаза. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Aldose-6-phosphate reductase (NADPH) — In enzymology, an aldose 6 phosphate reductase (NADPH) (EC number|1.1.1.200) is an enzyme that catalyzes the chemical reaction:D sorbitol 6 phosphate + NADP+ ightleftharpoons D glucose 6 phosphate + NADPH + H+Thus, the two substrates of this… …   Wikipedia

  • Aldose-1-phosphate adenylyltransferase — In enzymology, an aldose 1 phosphate adenylyltransferase (EC number|2.7.7.36) is an enzyme that catalyzes the chemical reaction:ADP + alpha D aldose 1 phosphate ightleftharpoons phosphate + ADP aldoseThus, the two substrates of this enzyme are… …   Wikipedia

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