|Superclasses:||Reactions Classified By Conversion Type → Simple Reactions → Chemical Reactions|
|Reactions Classified By Substrate → Small-Molecule Reactions|
EC Number: 18.104.22.168
Enzymes and Genes:
5'-deoxyribonucleotidase : ushA
CPS-53 (KpLE1) prophage; deoxyribonucleoside 5'-monophosphate phosphatase : yfdR
dCMP phosphohydrolase : yfbR
acid phosphatase / phosphotransferase : aphA
Reaction Locations: periplasmic space (sensu Gram-negative Bacteria), cytosol
The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the Enzyme Commission system.
Mass balance status: Balanced.
dTMP + H2O → thymidine + phosphate (22.214.171.124)
dAMP + H2O → 2'-deoxyadenosine + phosphate (126.96.36.199)
dCMP + H2O → 2'-deoxycytidine + phosphate (188.8.131.52)
dGMP + H2O → 2'-deoxyguanosine + phosphate (184.108.40.206)
dUMP + H2O → 2'-deoxyuridine + phosphate (220.127.116.11)
Enzyme Commission Primary Name: 5′-deoxynucleotidase
Enzyme Commission Synonyms: yfbR (gene name)
Enzyme Commission Summary:
The enzyme, characterized from the bacterium Escherichia coli, shows strict specificity towards deoxyribonucleoside 5'-monophosphates and does not dephosphorylate 5'-ribonucleotides or ribonucleoside 3'-monophosphates. A divalent metal cation is required for activity, with cobalt providing the highest activity.
Proudfoot04: Proudfoot M, Kuznetsova E, Brown G, Rao NN, Kitagawa M, Mori H, Savchenko A, Yakunin AF (2004). "General enzymatic screens identify three new nucleotidases in Escherichia coli. Biochemical characterization of SurE, YfbR, and YjjG." J Biol Chem 279(52);54687-94. PMID: 15489502
Zimmerman08: Zimmerman MD, Proudfoot M, Yakunin A, Minor W (2008). "Structural insight into the mechanism of substrate specificity and catalytic activity of an HD-domain phosphohydrolase: the 5'-deoxyribonucleotidase YfbR from Escherichia coli." J Mol Biol 378(1);215-26. PMID: 18353368
©2014 SRI International, 333 Ravenswood Avenue, Menlo Park, CA 94025-3493