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Literature summary extracted from

  • Nussbaum, R.L.; Caskey, C.T.
    Purification and characterization of hypoxanthine-guanine phosphoribosyltransferase from Saccharomyces cerevisiae (1981), Biochemistry, 20, 4584-4590.
    View publication on PubMed

Inhibitors

EC Number Inhibitors Comment Organism Structure
2.4.2.8 6-thioguanine competitive to hypoxanthine Saccharomyces cerevisiae
2.4.2.8 adenine
-
Saccharomyces cerevisiae
2.4.2.8 guanine competitve against hypoxanthine Saccharomyces cerevisiae
2.4.2.8 xanthine
-
Saccharomyces cerevisiae

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
2.4.2.8 0.011
-
hypoxanthine
-
Saccharomyces cerevisiae

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
2.4.2.8 29500
-
2 * 29500, SDS-PAGE Saccharomyces cerevisiae
2.4.2.8 54500 54800 equilibrium sedimentation analysis, gel filtration Saccharomyces cerevisiae

Organism

EC Number Organism UniProt Comment Textmining
2.4.2.8 Saccharomyces cerevisiae
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
2.4.2.8
-
Saccharomyces cerevisiae

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
2.4.2.8 additional information
-
-
Saccharomyces cerevisiae

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.4.2.8 guanine + 5-phospho-alpha-D-ribose 1-diphosphate
-
Saccharomyces cerevisiae GMP + diphosphate
-
?
2.4.2.8 hypoxanthine + 5-phospho-alpha-D-ribose 1-diphosphate
-
Saccharomyces cerevisiae IMP + diphosphate
-
?
2.4.2.8 additional information no substrate: adenine Saccharomyces cerevisiae ?
-
?
2.4.2.8 xanthine + 5-phospho-alpha-D-ribose 1-diphosphate no activity Saccharomyces cerevisiae XMP + diphosphate
-
?

Subunits

EC Number Subunits Comment Organism
2.4.2.8 dimer 2 * 29500, SDS-PAGE Saccharomyces cerevisiae

Ki Value [mM]

EC Number Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
2.4.2.8 0.0008
-
6-thioguanine
-
Saccharomyces cerevisiae
2.4.2.8 0.004
-
guanine
-
Saccharomyces cerevisiae
2.4.2.8 0.14
-
adenine
-
Saccharomyces cerevisiae
2.4.2.8 0.14
-
xanthine
-
Saccharomyces cerevisiae