If an enzyme name is shown in bold, there is experimental evidence for this enzymatic activity.
Locations of Mapped Genes:
Synonyms: D-arabinose catabolism
|Superclasses:||Degradation/Utilization/Assimilation → Carbohydrates Degradation → Sugars Degradation → D-arabinose Degradation|
E. coli K-12 uses the enzymes of the fucose degradation pathway for utilization of D-arabinose. Expression of the enzymes in this pathway is normally induced by L-fucose and not by D-arabinose; thus, wild-type E. coli K-12 can not use D-arabinose as a sole source of carbon and energy without prior induction by growth on L-fucose [LeBlanc71]. Growth on D-arabinose requires a mutation in the transcriptional regulator FucR [Zhu86].
D-arabinose is metabolized yielding dihydroxy-acetone phosphate, an intermediate of glycolysis, which thereby enters central metabolism, and glycolaldehyde. Glycolaldehyde may be further catabolized to glycolate [LeBlanc71].
E. coli B uses a different pathway to catabolize D-arabinose; see D-arabinose degradation II.
Review: Mayer, C. and E. Boos, Hexose/Pentose and Hexitol/Pentitol Metabolism. EcoSal Module 3.4.1 [ECOSAL]
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