Ribulose

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Ribulose
IUPAC name (3R,4R)-1,3,4,5-Tetrahydroxypentan-2-one
Other names D-erythro-2-Pentulose
Adonose
Arabinulose
Araboketose
Ribosone
Identifiers
CAS number 488-84-6
PubChem 151261
SMILES
 
Properties
Molecular formula C5H10O5
Molar mass 150.13
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox references

Ribulose is a ketopentose — a monosaccharide containing five carbon atoms, and including a ketone functional group. It has chemical formula C5H10O5. Two enantiomers are possible, D-ribulose (D-erythro-pentulose) and L-ribulose (L-erythro-pentulose). D-Ribulose is the diastereomer of D-xylulose.

Ribulose sugars are composed in the pentose phosphate pathway. They are important in the formation of many bioactive substances. For example, D-ribulose is an intermediate in the fungal pathway for D-arabitol production. Also, as the 1,5-bisphosphate, D-ribulose combines with carbon dioxide at the start of the photosynthetic process in green plants (carbon dioxide trap).

A synthetic form of ribulose known as sucroribulose is found in many brands of artificial sweeteners.

See also

External links

v • d • e
Types of Carbohydrates
General:
Geometry
Monosaccharides
Ketotriose (Dihydroxyacetone) · Aldotriose (Glyceraldehyde)
Ketotetrose (Erythrulose) · Aldotetroses (Erythrose, Threose)
Ketopentose (Ribulose, Xylulose)

Aldopentose (Ribose, Arabinose, Xylose, Lyxose)

Deoxy sugar (Deoxyribose)
Multiple
Glycosaminoglycans
Aminoglycosides
Major families of biochemicals
Saccharides · Carbohydrates · Glycosides ·  · Amino acids · Peptides · Proteins · Glycoproteins ·  · Lipids · Terpenes · Steroids · Carotenoids
Alkaloids · Nucleobases · Nucleic acids ·  · Enzyme cofactors · Flavonoids · Polyketides · Tetrapyrroles

Wikipedia content modification information:

  • This page was last modified on 27 November 2008, at 21:14.

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