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A new class EC 7, Translocases, has been added to the EC list. It will be part of ENZYME from release 2018_10. Read more about EC 7 here.

ENZYME entry: EC

Accepted Name
D-arabinitol dehydrogenase (NADP(+)).
Alternative Name(s)
D-arabinitol dehydrogenase 1.
NADP(+)-dependent D-arabinitol dehydrogenase.
Reaction catalysed
  • D-arabinitol + NADP(+) <=> D-xylulose + NADPH
  • D-arabinitol + NADP(+) <=> D-ribulose + NADPH
  • The enzyme from the rust fungus Uromyces fabae can use D-arabinitol and D-mannitol as substrates in the forward direction and D-xylulose, D-ribulose and, to a lesser extent, D-fructose as substrates in the reverse direction.
  • This enzyme carries out the reactions of both EC and EC, but unlike them, uses NADP(+) rather than NAD(+) as cofactor.
  • D-arabinitol is capable of quenching reactive oxygen species involved in defense reactions of the host plant.
PRIAM enzyme-specific profiles1.1.1.287
KEGG Ligand Database for Enzyme Nomenclature1.1.1.287
IUBMB Enzyme Nomenclature1.1.1.287
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