Galactose-6-phosphate isomerase
In enzymology, a galactose-6-phosphate isomerase (EC 5.3.1.26) is an enzyme that catalyzes the chemical reaction
- D-galactose 6-phosphate D-tagatose 6-phosphate
| galactose-6-phosphate isomerase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 5.3.1.26 | ||||||||
| CAS number | 39433-98-2 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
| |||||||||
Hence, this enzyme has one substrate, D-galactose 6-phosphate, and one product, D-tagatose 6-phosphate.
This enzyme belongs to the family of isomerases, specifically those intramolecular oxidoreductases interconverting aldoses and ketoses. The systematic name of this enzyme class is D-galactose-6-phosphate aldose-ketose-isomerase. This enzyme participates in galactose metabolism.
References
- de Vos WM, Boerrigter I, van Rooyen RJ, Reiche B, Hengstenberg W (1990). "Characterization of the lactose-specific enzymes of the phosphotransferase system in Lactococcus lactis". J. Biol. Chem. 265 (36): 22554–60. PMID 2125052.
- van Rooijen RJ, van Schalkwijk S, de Vos WM (1991). "Molecular cloning, characterization, and nucleotide sequence of the tagatose 6-phosphate pathway gene cluster of the lactose operon of Lactococcus lactis". J. Biol. Chem. 266 (11): 7176–81. PMID 1901863.
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