Galactose-1-phosphate thymidylyltransferase
In enzymology, a galactose-1-phosphate thymidylyltransferase (EC 2.7.7.32) is an enzyme that catalyzes the chemical reaction
- dTTP + alpha-D-galactose 1-phosphate diphosphate + dTDP-galactose
| galactose-1-phosphate thymidylyltransferase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 2.7.7.32 | ||||||||
| CAS number | 9023-25-0 | ||||||||
| 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 | ||||||||
| |||||||||
Thus, the two substrates of this enzyme are dTTP and alpha-D-galactose 1-phosphate, whereas its two products are diphosphate and dTDP-galactose.
This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing nucleotide groups (nucleotidyltransferases). The systematic name of this enzyme class is dTTP:alpha-D-galactose-1-phosphate thymidylyltransferase. Other names in common use include dTDP galactose pyrophosphorylase, galactose 1-phosphate thymidylyl transferase, thymidine diphosphogalactose pyrophosphorylase, thymidine triphosphate:alpha-D-galactose 1-phosphate, and thymidylyltransferase. This enzyme participates in nucleotide sugars metabolism.
References
- Pazur JH, Anderson JS (October 1963). "Thymidine triphosphate: alpha-D-galactose 1-phosphate thymidylyltransferase from Streptococcus faecalis grown on D-galactose". The Journal of Biological Chemistry. 238: 3155–60. PMID 14085355.