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Information on EC 1.1.1.312 - 2-hydroxy-4-carboxymuconate semialdehyde hemiacetal dehydrogenase

for references in articles please use BRENDA:EC1.1.1.312

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IUBMB Comments

The enzyme does not act on unsubstituted aliphatic or aromatic aldehydes or glucose; NAD+ can replace NADP+, but with lower affinity. The enzyme was initially believed to act on 4-carboxy-2-hydroxy-cis,cis-muconate 6-semialdehyde and produce 4-carboxy-2-hydroxy-cis,cis-muconate . However, later studies showed that the substrate is the hemiacetal form , and the product is 2-oxo-2H-pyran-4,6-dicarboxylate [2,4].

The expected taxonomic range for this enzyme is: Bacteria, Archaea

Synonyms
4-carboxy-2-hydroxymuconate-6-semialdehyde dehydrogenase, chms dehydrogenase, more

REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
4-carboxy-2-hydroxymuconate semialdehyde hemiacetal + NADP+ = 2-oxo-2H-pyran-4,6-dicarboxylate + NADPH + H+
show the reaction diagram
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