EC 18.104.22.168 - UDP-sugar diphosphatase
IntEnz Enzyme Nomenclature
- UDP-sugar + H2O = UMP + α-D-aldose 1-phosphate
A divalent cation is required for activity. UDP-sugar is the best substrate, although other nucleoside-sugar diphosphates are used as substrates with similar Km values but much lower maximum velocities. Thus, this enzyme has a specificity distinct from that of ADP-sugar diphosphatase (EC 22.214.171.124). Some but not all enzymes of this class also appear to have 5'-nucleotidase (see EC 126.96.36.199) activity.
Links to other databases
Isolation, molecular characterization and expression of the ushB gene of Salmonella typhimurium which encodes a membrane bound UDP-sugar hydrolase.Mol. Microbiol. 3: 177-186 (1989). [PMID: 2548058]
Uridine diphosphate sugar hydrolase. Purification of enzyme and protein inhibitor.J. Biol. Chem. 242: 1944-1954 (1987).
[EC 188.8.131.52 created 1999]