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.
Lee L, Kimura A, Tochikura T (October 1979). "Purification and properties of UDP-glucose (UDP-galactose) pyrophosphorylase from Bifidobacterium bifidum". J. Biochem. Tokyo. 86 (4): 923–8. PMID500588.
Lobelle-Rich PA, Reeves RE (1983). "Separation and characterization of two UTP-utilizing hexose phosphate uridylyltransferases from Entamoeba histolytica". Mol. Biochem. Parasitol. 7 (2): 173–82. doi:10.1016/0166-6851(83)90043-9. PMID6304512.