Putative 8-oxo-dGTP diphosphatase YtkD - O35013 (YTKD_BACSU)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for O35013: 4
 
Function
Involved in the GO system responsible for removing an oxidatively damaged form of guanine (7,8-dihydro-8-oxoguanine, 8-oxo-dGTP) from DNA and the nucleotide pool. 8-oxo-dGTP is inserted opposite dA and dC residues of template DNA with almost equal efficiency thus leading to A.T to G.C transversions (By similarity). Functions, in conjuction with MutT, to protect vegetatively growing cells from DNA-damaging agents such as H(2)O(2) or t-BHP (t-butylhydroperoxide). The 2 proteins do not however protect spores. According to PubMed:15576788, phosphohydrolase that catalyzes the hydrolysis of all common nucleoside triphosphates as well as of the mutagenic analog 8-oxo-dGTP. The high catalytic efficiency on dGTP is in contrast to results from PubMed:14761999. According to PubMed:14761999, catalyzes the hydrolysis of 8-oxo-dGTP with a specific activity 413 times higher than that exhibited against dGTP. Preferentially catalyzes the hydrolysis of 8-oxo-dGTP and 8-oxo-GTP. According to PubMed:15576788, hydrolyzes nucleoside triphosphates in a stepwise fashion through the diphosphate to the monophosphate, releasing two molecules of inorganic orthophosphate. UniProt
Catalytic Activity
8-oxo-dGTP + H2O = 8-oxo-dGMP + diphosphate. UniProt
Pathway Maps
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  • Other Gene names: ytkD, mutTA, BSU30630
This protein in other organisms (by gene name):
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Data in green originates from UniProtKB  
Variation data (sourced from UniProt) shows non-genetic variation from the ExPASy   and dbSNP   websites.
Data in yellow originates from Pfam  , by interacting with the HMMER3 web site  
Data in purple originates from Phosphosite  .
Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
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  • Red: potentially disorderd region
  • Blue: probably ordered region.
Hydropathy has been calculated using a sliding window of 15 residues and summing up scores from standard hydrophobicity tables.
  • Red: hydrophobic
  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
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Validation Track

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Data in red indicates combined ranges of Homology Models from SBKB   and the Protein Model Portal  
The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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