Arabinose
| Arabinose | |
|---|---|
 |
 |
| IUPAC name | (2R,3S,4S)-2,3,4,5-Tetrahydroxypentanal |
| Identifiers | |
| CAS number | [5328-37-0] |
| PubChem | |
| SMILES | C([C@@H]([C@@H]([C@H](C=O)O)O)O)O |
| 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 disclaimer and references | |
Arabinose is an aldopentose — a monosaccharide containing five carbon atoms, and including an aldehyde (CHO) functional group. It has chemical formula C5H10O5 and a molar mass of 150.13 g/mol.
Isomerism
For biosynthetic reasons, saccharides are almost always more abundant in nature as the "D" form, or structurally analogous to D-(+)-glyceraldehyde.[1] However, L-arabinose is in fact more common than D-arabinose in nature and is found in nature as a component of biopolymers such as hemicellulose and pectin. The L-arabinose operon is a very important operon in molecular biology and bioengineering.
A classic method for the organic synthesis of arabinose from glucose is the Wohl degradation.
References
- For sugars, the D/L nomenclature does not refer to the molecule's optical rotation properties but to its structural analogy to glyceraldehyde.
See also
- L-arabinose operon
- Deoxyribose
- Lyxose
- Ribose
- Ribulose
- Xylose
- Xylulose
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Source: adapted by the editor from Wikipedia, the free encyclopedia; from the article "Arabinose". Image Credit.
