Galactose-6-phosphate isomerase explained

galactose-6-phosphate isomerase
Ec Number:	5.3.1.26
Cas Number:	39433-98-2
Go Code:	0050044

In enzymology, a galactose-6-phosphate isomerase is an enzyme that catalyzes the chemical reaction

D-galactose 6-phosphate

\rightleftharpoons D-tagatose 6-phosphate

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 . 22554 - 60 . 2125052 . 36 .
• 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 . 7176 - 81 . 1901863 . 11 .