ENZYME entry: EC 4.2.1.110

Accepted Name
Aldos-2-ulose dehydratase.
Alternative Name(s)
1,5-anhydro-D-fructose dehydratase (microthecin-forming).
AUDH.
Pyranosone dehydratase.
Reaction catalysed
  • 1,5-anhydro-D-fructose <=> 1,5-anhydro-4-deoxy-D-glycero-hex-3-en-2-ulose + H(2)O
  • 1,5-anhydro-4-deoxy-D-glycero-hex-3-en-2-ulose <=> 2-hydroxy-2-(hydroxymethyl)-2H-pyran-3(6H)-one
Comment(s)
  • This enzyme catalyzes two of the steps in the anhydrofructose pathway, which leads to the degradation of glycogen and starch via 1,5-anhydro-D-fructose.
  • Aldose-2-uloses such as 2-dehydroglucose can also act as substrates, but more slowly.
  • This is a bifunctional enzyme that acts as both a lyase and as an isomerase.
  • Differs from EC 4.2.1.111, which can carry out only reaction 1, is inhibited by its product and requires metal ions for activity.
Cross-references
BRENDA4.2.1.110
EC2PDB4.2.1.110
ExplorEnz4.2.1.110
PRIAM enzyme-specific profiles4.2.1.110
KEGG Ligand Database for Enzyme Nomenclature4.2.1.110
IUBMB Enzyme Nomenclature4.2.1.110
IntEnz4.2.1.110
MEDLINEFind literature relating to 4.2.1.110
MetaCyc4.2.1.110
UniProtKB/Swiss-Prot
P84193, AUD_PHACH

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