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Literature summary for 5.1.3.2 extracted from

  • Fukasawa, T.; Obonai, K.; Segawa, T.; Nogi, Y.
    The enzymes of the galactose cluster in Saccharomyces cerevisiae. II. Purification and characterization of uridine diphosphoglucose 4-epimerase (1980), J. Biol. Chem., 255, 2705-2707.
    View publication on PubMed

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.22
-
UDPgalactose
-
Saccharomyces cerevisiae

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
78000
-
2 * 78000, SDS-PAGE Saccharomyces cerevisiae
183000 187000 sucrose density gradient centrifugation, gel filtration Saccharomyces cerevisiae

Organism

Organism UniProt Comment Textmining
Saccharomyces cerevisiae
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Saccharomyces cerevisiae

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
31.8
-
-
Saccharomyces cerevisiae

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
UDP-galactose
-
Saccharomyces cerevisiae UDP-glucose
-
?

Subunits

Subunits Comment Organism
dimer 2 * 78000, SDS-PAGE Saccharomyces cerevisiae

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
25
-
60 min, 26% loss of activity Saccharomyces cerevisiae
30
-
53% loss of activity within 10 min, partial protection by NAD+, up to a concentration of 7 mM Saccharomyces cerevisiae
37
-
85% loss of activity within 20 min, partial protection by NAD+, up to a concentration of 7 mM. Partial protection by addition of NAD+ up to a concentration of 1 mM Saccharomyces cerevisiae

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
64.8
-
UDPgalactose
-
Saccharomyces cerevisiae

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.8 8
-
Saccharomyces cerevisiae

Cofactor

Cofactor Comment Organism Structure
NAD+ each dimer contains one molecule of NAD+ tightly bound Saccharomyces cerevisiae