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Literature summary for 2.7.4.8 extracted from

  • Zhang, Y.; Li, Y.; Wu, Y.; Yan, H.
    Structural and functional roles of tyrosine 78 of yeast guanylate kinase (1997), J. Biol. Chem., 272, 19343-19350.
    View publication on PubMed

Protein Variants

Protein Variants Comment Organism
Y78F affinity for MgATP2- similar to wild type but affinity for GMP decreases by a factor of 12 Saccharomyces cerevisiae

Inhibitors

Inhibitors Comment Organism Structure
GMP
-
Saccharomyces cerevisiae
MgATP2-
-
Saccharomyces cerevisiae

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.091
-
GMP pH 7.7, 25ºC Saccharomyces cerevisiae
0.2
-
MgATP2- pH 7.7, 25ºC Saccharomyces cerevisiae
0.45
-
MgATP2- pH 7.7, 25ºC, Y78F mutant Saccharomyces cerevisiae
1.8
-
GMP pH 7.7, 25ºC, Y78F mutant Saccharomyces cerevisiae

Organism

Organism UniProt Comment Textmining
Saccharomyces cerevisiae
-
-
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
GMP + MgATP2-
-
Saccharomyces cerevisiae MgADP- + GDP
-
?

Ki Value [mM]

Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
0.035
-
GMP pH 7.7, 25ºC Saccharomyces cerevisiae
0.08
-
MgATP2- pH 7.7, 25ºC Saccharomyces cerevisiae
0.16
-
MgATP2- pH 7.7, 25ºC, Y78F mutant Saccharomyces cerevisiae
0.63
-
GMP pH 7.7, 25ºC, Y78F mutant Saccharomyces cerevisiae