AskDefine | Define arabinose

User Contributed Dictionary

English

Noun

  1. An aldopentose that occurs most often in polysaccharides such as hemicellulose and pectin

Extensive Definition

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. 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

arabinose in Arabic: أرابينوز
arabinose in German: Arabinose
arabinose in Spanish: Arabinosa
arabinose in Esperanto: Arabinozo
arabinose in French: Arabinose
arabinose in Italian: Arabinosio
arabinose in Hebrew: אראבינוז
arabinose in Dutch: Arabinose
arabinose in Japanese: アラビノース
arabinose in Polish: Arabinoza
arabinose in Portuguese: Arabinose
arabinose in Russian: Арабиноза
arabinose in Finnish: Arabinoosi
arabinose in Swedish: Arabinos
arabinose in Ukrainian: Арабіноза
arabinose in Chinese: 树胶醛糖
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