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Literature summary extracted from

  • Tsai, C.Y.
    Sucrose-UDP glucosyltransferase of Zea mays endosperm (1974), Phytochemistry, 13, 885-891.
No PubMed abstract available

Inhibitors

EC Number Inhibitors Comment Organism Structure
2.4.1.13 ADP sucrose cleavage, not synthesis Zea mays
2.4.1.13 AMP not inhibitory Zea mays
2.4.1.13 ATP inhibition of cleavage, not synthesis Zea mays
2.4.1.13 Ca2+
-
Zea mays
2.4.1.13 glucose uncompetitive to UDPglucose Zea mays
2.4.1.13 Mg2+
-
Zea mays
2.4.1.13 additional information no inhibition by K+, Na+ Zea mays
2.4.1.13 UDP at high concentrations; strong Zea mays
2.4.1.13 UTP sucrose cleavage; synthesis Zea mays
2.4.1.13 Zn2+ strong Zea mays

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
2.4.1.13 0.14 0.15 UDP
-
Zea mays
2.4.1.13 0.98 1.66 fructose cosubstrate UDPglucose, ADP Zea mays
2.4.1.13 2.08 3.1 fructose
-
Zea mays
2.4.1.13 16.9 40 sucrose
-
Zea mays

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
2.4.1.13 Ca2+ inhibition Zea mays
2.4.1.13 Ca2+ activation of sucrose synthesis Zea mays
2.4.1.13 Mg2+ activation Zea mays
2.4.1.13 Mg2+ inhibition of sucrose cleavage Zea mays

Organism

EC Number Organism UniProt Comment Textmining
2.4.1.13 Zea mays
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
2.4.1.13
-
Zea mays

Source Tissue

EC Number Source Tissue Comment Organism Textmining
2.4.1.13 endosperm
-
Zea mays
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
2.4.1.13 128
-
sucrose cleavage Zea mays
2.4.1.13 180
-
sucrose synthesis Zea mays

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.4.1.13 UDP + sucrose
-
Zea mays UDP-glucose + D-fructose
-
?
2.4.1.13 UDPglucose + D-fructose
-
Zea mays UDP + sucrose
-
r

Temperature Stability [°C]

EC Number Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
2.4.1.13 55
-
pH 6.5: t1/2: 1 min, complete inactivation after 10 min, pH 8: 20% loss of activity after 1 min, 80% loss of activity within 10 min Zea mays

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
2.4.1.13 6.5
-
sucrose cleavage Zea mays
2.4.1.13 8
-
sucrose synthesis Zea mays

pH Stability

EC Number pH Stability pH Stability Maximum Comment Organism
2.4.1.13 6.5
-
t1/2: 1 min, 55°C, complete inactivation within 10 min Zea mays
2.4.1.13 8
-
55°C: 20% loss of activity within 1 min, 80% loss of activity within 10 min Zea mays