UTP—hexose-1-phosphate uridylyltransferase

In enzymology, an UTP—hexose-1-phosphate uridylyltransferase (Template:EC number) is an enzyme that catalyzes the chemical reaction

UTP + alpha-D-galactose 1-phosphate $\rightleftharpoons$ diphosphate + UDP-galactose

Thus, the two substrates of this enzyme are UTP and alpha-D-galactose 1-phosphate, whereas its two products are diphosphate and UDP-galactose.

Enzyme family

This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing nucleotide groups (nucleotidyltransferases). The systematic name of this enzyme class is UTP:alpha-D-hexose-1-phosphate uridylyltransferase. Other names in common use include galactose-1-phosphate uridylyltransferase, galactose 1-phosphate uridylyltransferase, alpha-D-galactose 1-phosphate uridylyltransferase, galactose 1-phosphate uridyltransferase, UDPgalactose pyrophosphorylase, uridine diphosphate galactose pyrophosphorylase, and uridine diphosphogalactose pyrophosphorylase. This enzyme participates in galactose metabolism and nucleotide sugars metabolism.

Structural studies

Template:As of, 3 structures have been solved for this class of enzymes, with PDB accession codes Template:PDB link, Template:PDB link, and Template:PDB link.

References

• Template:Cite journal
• Template:Cite journal
• Template:Cite journal
• Template:Cite journal

Template:2.7-enzyme-stub