Galactitol-1-phosphate 5-dehydrogenase

In enzymology, galactitol-1-phosphate 5-dehydrogenase (EC 1.1.1.251) is an enzyme that catalyzes the chemical reaction

galactitol-1-phosphate 5-dehydrogenase
Identifiers
EC no.1.1.1.251
CAS no.167618-25-9
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO
Search
PMCarticles
PubMedarticles
NCBIproteins

The two substrates of this enzyme are galactitol-1-phosphate and oxidised nicotinamide adenine dinucleotide (NAD+). Its 3 products are L-tagatose 6-phosphate (shown in its open-chain keto form), reduced NADH, and a proton.[1][2]

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 galactitol-1-phosphate:NAD+ oxidoreductase. This enzyme participates in galactose metabolism. It employs one cofactor, zinc.

References

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  1. Enzyme 1.1.1.251 at KEGG Pathway Database.
  2. Nobelmann B, Lengeler JW (1995). "Sequence of the gat operon for galactitol utilization from a wild-type strain EC3132 of Escherichia coli". Biochim. Biophys. Acta. 1262 (1): 69–72. doi:10.1016/0167-4781(95)00053-j. PMID 7772602.