HD domain-containing protein may function as a metal dependent phosphohydrolase; similar to Homo sapiens 5'-deoxynucleotidase HDDC2, which catalyzes the dephosphorylation of the nucleoside 5'-monophosphates deoxyadenosine monophosphate (dAMP), deoxycytidine monophosphate (dCMP), deoxyguanosine monophosphate (dGMP) and deoxythymidine monophosphate (dTMP)
5'-deoxynucleotidase YfbR-like; This entry contains Escherichia coli (strain K12) YfbR. It a 5 ...
78-127
2.55e-03
5'-deoxynucleotidase YfbR-like; This entry contains Escherichia coli (strain K12) YfbR. It a 5'-deoxynucleotidase that functions as a dCMP phosphohydrolase in a salvage pathway for the synthesis of dUMP in a dcd/deoA mutant. YfbR contains a conserved HD domain. YfbR has phosphatase activity with deoxyribonucleoside 5'-monophosphates and does not hydrolyze ribonucleotides or deoxyribonucloside 3'-monophosphates. Crystal structures of YfbR have been solved, it was suggested that the biological unit is a dimer. This family also includes phage HD domain-containing hydrolase-like enzymes, such as A0A2H5BHG9 and A0A2L0V156 from Acinetobacter phage SH-Ab15497, which are associated with PurZ, an enzyme that catalyzes the synthesis of diaminopurine (Z), a DNA modification that gives phages an advantage for evading host restriction enzymes activity. They have 2'-deoxyadenine 5'-triphosphate triphosphohydrolase (dATPase) activity and catalyze the hydrolysis of 2'-deoxyadenine 5'-triphosphate dATP to 2'-deoxyadenine (dA) and triphosphate. These enzymes are highly specific for dATP and also catalyze the hydrolysis of dADP and dAMP into dA, releasing pyrophosphate and phosphate, respectively. Thus, these dATPases facilitate the synthesis of Z-genome synthesis removing dATP and dADP from the nucleotide pool of the host.
Pssm-ID: 432874 Cd Length: 182 Bit Score: 37.49 E-value: 2.55e-03
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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