L(+)-Arabinose is a pentose monosaccharide whose transcription is regulated by Ara-C proteins and is a substrate for L-arabinose dehydrogenase, galactose dehydrogenase. It is not fermented by yeast. Used as a one-way or reversible switch for protein expression. It is also used to make arabinosyl nucleosides. L-Arabinose is used as a substrate to identify, differentiate and characterize pentose sugar isomerase(s). L-Arabinose is used in the bioproduction of L-ribose. L-Arabinose is the naturally occurring isomer and is a constituent of plant polysaccharides. Most bacteria contain an inducible arabinose operon that codes for a series of enzymes and transporters that allows L-arabinose to be used as the sole carbon source in microbial culture.

Synonyms:
Beta-L-Arabinopyranose; Beta-L-(+)-ARABINOSE; L-(+)-Arabinose; Pectinose; Arabitol, L-(-)-(RG); L-Arabinopyranose; (2R,3R,4S,5S)-oxane-2,3,4,5-tetrol

CAS No:
87-72-9

Molecular Formula:
C5H10O5

Molecular Weight:
150.13

Purity (HPLC):
≥99%

Appearance:
White crystalline powder

Melting Point:
154-160ºC

Optical Rotation:
pmD20 = +101 to +105º

Moisture:
≤0.5%

Heavy Metals (Pb):
≤0.001%

Storage and Stability:
Powder may be stored at RT. Stable for 12 months.