L-arabinitol 4-dehydrogenase

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L-arabinitol 4-dehydrogenase
EC no.
CAS no.9028-19-7
IntEnzIntEnz view
ExPASyNiceZyme view
MetaCycmetabolic pathway
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO

In enzymology, a L-arabinitol 4-dehydrogenase (EC is an enzyme that catalyzes the chemical reaction

L-arabinitol + NAD+ L-xylulose + NADH + H+

Thus, the two substrates of this enzyme are L-arabinitol and NAD+, whereas its 3 products are L-xylulose, NADH, and H+.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is L-arabinitol:NAD+ 4-oxidoreductase (L-xylulose-forming). Other names in common use include pentitol-DPN dehydrogenase, and L-arabitol dehydrogenase. This enzyme participates in pentose and glucuronate interconversions.


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  • Chiang C, Knight SG (1961). "L-Arabinose metabolism by cell-free extracts of Penicillium chrysogenum". Biochim. Biophys. Acta. 46 (2): 271–8. doi:10.1016/0006-3002(61)90750-8. PMID 13692999.