EC Number | Inhibitors | Comment | Organism | Structure |
---|---|---|---|---|
2.7.7.44 | Mg2+ | best fulfills the requirement for a divalent cation, maximal activity of forward reaction at a Mg2+/UTP ratio of 2:1. In the reverse reaction below 5 mM diphosphate, a Mg2+:diphosphate ratio of approximately 1:1 gives optimal activity, excess of Mg2+ is inhibitory | Hordeum vulgare | |
2.7.7.44 | Mn2+ | 53% of the activation with Mg2+, excess of Mn2+ inhibits the reaction in both directions | Hordeum vulgare |
EC Number | KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|---|
2.7.7.44 | 0.33 | - |
D-glucuronic acid 1-phosphate | pH 8.0, 30°C | Hordeum vulgare | |
2.7.7.44 | 0.5 | - |
UDP-D-glucuronic acid | pH 8.0, 30°C | Hordeum vulgare |
EC Number | Metals/Ions | Comment | Organism | Structure |
---|---|---|---|---|
2.7.7.44 | Ca2+ | 36% of the activation with Mg2+ | Hordeum vulgare | |
2.7.7.44 | Co2+ | 40% of the activation with Mg2+ | Hordeum vulgare | |
2.7.7.44 | Mg2+ | best fulfills the requirement for a divalent cation, maximal activity of forward reaction at a Mg2+/UTP ratio of 2:1. In the reverse reaction below 5 mM diphosphate, a Mg2+:diphosphate ratio of approximately 1:1 gives optimal activity, excess of Mg2+ is inhibitory | Hordeum vulgare | |
2.7.7.44 | Mn2+ | can substitute for Mg2+ in either the forward or the reverse direction, 53% of the activation with Mg2+, excess of Mn2+ inhibits the reaction in both directions | Hordeum vulgare | |
2.7.7.44 | Zn2+ | 37% of the activation with Mg2+ | Hordeum vulgare |
EC Number | Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|---|
2.7.7.44 | UTP + D-glucuronic acid 1-phosphate | Hordeum vulgare | predominant route whereby UDPglucuronic acid is termed in young barley seedlings | ? | - |
? |
EC Number | Organism | UniProt | Comment | Textmining |
---|---|---|---|---|
2.7.7.44 | Hordeum vulgare | - |
var. Larker | - |
EC Number | Purification (Comment) | Organism |
---|---|---|
2.7.7.44 | partial | Hordeum vulgare |
EC Number | Source Tissue | Comment | Organism | Textmining |
---|---|---|---|---|
2.7.7.44 | seedling | - |
Hordeum vulgare | - |
EC Number | Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|---|
2.7.7.44 | 3.8 | - |
- |
Hordeum vulgare |
EC Number | Storage Stability | Organism |
---|---|---|
2.7.7.44 | -20°C, if dialyzed and stored deep frozen the enzyme rapidly loses activity | Hordeum vulgare |
EC Number | Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|---|
2.7.7.44 | UTP + D-glucuronic acid 1-phosphate | - |
Hordeum vulgare | diphosphate + UDP-D-glucuronic acid | - |
r | |
2.7.7.44 | UTP + D-glucuronic acid 1-phosphate | at 16% of the activity observed with UTP | Hordeum vulgare | diphosphate + UDP-D-glucuronic acid | - |
r | |
2.7.7.44 | UTP + D-glucuronic acid 1-phosphate | predominant route whereby UDPglucuronic acid is termed in young barley seedlings | Hordeum vulgare | ? | - |
? |
EC Number | pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|---|
2.7.7.44 | 8 | 9 | - |
Hordeum vulgare |