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Literature summary for 3.1.5.1 extracted from

  • Seto, D.; Bhatnagar, S.K.; Bessman, M.J.
    The purification and properties of deoxyguanosine triphosphate triphosphohydrolase from Escherichia coli (1988), J. Biol. Chem., 263, 1494-1499.
    View publication on PubMed

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.001
-
dGTP
-
Escherichia coli

Metals/Ions

Metals/Ions Comment Organism Structure
Co2+ activation 17% the rate of Mg2+ Escherichia coli
Mg2+ no activity in absence of Escherichia coli
Mn2+ activation 30% the rate of Mg2+ Escherichia coli

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
58900
-
homotetramer, 4 * 58900 Escherichia coli
230000
-
gel filtration Escherichia coli
230000
-
SDS-PAGE Escherichia coli

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
dGTP + H2O Escherichia coli
-
deoxyguanosine + triphosphate
-
?

Organism

Organism UniProt Comment Textmining
Escherichia coli
-
-
-

Purification (Commentary)

Purification (Comment) Organism
16000 fold to homogeneity Escherichia coli

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
dGTP + H2O
-
Escherichia coli deoxyguanosine + triphosphate
-
?
dGTP + H2O highly specific for Escherichia coli deoxyguanosine + triphosphate
-
?
dGTP + H2O triphosphate group required Escherichia coli deoxyguanosine + triphosphate
-
?
dGTP + H2O no activity on dGDP Escherichia coli deoxyguanosine + triphosphate
-
?

Subunits

Subunits Comment Organism
tetramer SDS-PAGE Escherichia coli
tetramer homotetramer, 4 * 58900 Escherichia coli

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
55 60 full activity after 1 h Escherichia coli
65 70 90% denatured after 1 h Escherichia coli

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
4000
-
dGTP
-
Escherichia coli