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Literature summary for 2.4.1.14 extracted from
- Sucrose phosphate synthetase from various plant origins (1972), Agric. Biol. Chem., 36, 1877-1884.
No PubMed abstract available
Activating Compound
| Activating Compound | Comment | Organism | Structure |
|---|---|---|---|
| Mg2+ | stimulates enzyme activity | Solanum tuberosum |  |
| Mg2+ | stimulates enzyme activity | Ipomoea batatas | |
| Mn2+ | stimulates enzyme activity | Solanum tuberosum | |
| Mn2+ | stimulates enzyme activity | Ipomoea batatas | |
Inhibitors
| Inhibitors | Comment | Organism | Structure |
|---|---|---|---|
| Mg2+ | - |
Hordeum vulgare | |
| Mn2+ | - |
Hordeum vulgare | |
| Mn2+ | - |
Trifolium repens | |
| UDP | competitive with UDP-glucose | Ipomoea batatas | |
KM Value [mM]
| KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 2.5 | - |
UDP-glucose | - |
Solanum tuberosum | |
| 2.7 | - |
UDP-glucose | - |
Hordeum vulgare | |
| 3 | - |
UDP-glucose | - |
Trifolium repens | |
| 4.2 | - |
UDP-glucose | - |
Brassica napus | |
| 5.4 | - |
UDP-glucose | - |
Ipomoea batatas | |
Metals/Ions
| Metals/Ions | Comment | Organism | Structure |
|---|---|---|---|
| Mg2+ | inhibitory | Hordeum vulgare | |
| Mg2+ | stimulates enzyme activity | Solanum tuberosum | |
| Mg2+ | stimulates enzyme activity | Ipomoea batatas | |
| Mn2+ | inhibitory | Hordeum vulgare | |
| Mn2+ | inhibitory | Trifolium repens | |
| Mn2+ | stimulates enzyme activity | Solanum tuberosum | |
| Mn2+ | stimulates enzyme activity | Ipomoea batatas | |
Natural Substrates/ Products (Substrates)
| Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| UDP-alpha-D-glucose + D-fructose 6-phosphate | Hordeum vulgare | catalyzes the penultimate step of sucrose synthesis | UDP + sucrose 6-phosphate | - |
? | |
| UDP-alpha-D-glucose + D-fructose 6-phosphate | Solanum tuberosum | catalyzes the penultimate step of sucrose synthesis | UDP + sucrose 6-phosphate | - |
? | |
| UDP-alpha-D-glucose + D-fructose 6-phosphate | Brassica napus | catalyzes the penultimate step of sucrose synthesis | UDP + sucrose 6-phosphate | - |
? | |
| UDP-alpha-D-glucose + D-fructose 6-phosphate | Trifolium repens | catalyzes the penultimate step of sucrose synthesis | UDP + sucrose 6-phosphate | - |
? | |
| UDP-alpha-D-glucose + D-fructose 6-phosphate | Ipomoea batatas | catalyzes the penultimate step of sucrose synthesis | UDP + sucrose 6-phosphate | - |
? | |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Brassica napus | - |
rape | - |
| Hordeum vulgare | - |
barley | - |
| Ipomoea batatas | - |
sweet potato, decreasing activity during root development | - |
| Solanum tuberosum | - |
potato | - |
| Trifolium repens | - |
ladino clover | - |
Purification (Commentary)
| Purification (Comment) | Organism |
|---|---|
| partial | Solanum tuberosum |
| partial | Ipomoea batatas |
Source Tissue
| Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|
| leaf | - |
Hordeum vulgare | - |
| leaf | - |
Brassica napus | - |
| leaf | - |
Trifolium repens | - |
| root | very low activity | Ipomoea batatas | - |
| tuber | - |
Solanum tuberosum | - |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| additional information | ADP-glucose can not replace UDP-glucose | Ipomoea batatas | ? | - |
? | |
| UDP-alpha-D-glucose + D-fructose 6-phosphate | - |
Hordeum vulgare | UDP + sucrose 6-phosphate | - |
? | |
| UDP-alpha-D-glucose + D-fructose 6-phosphate | - |
Solanum tuberosum | UDP + sucrose 6-phosphate | - |
? | |
| UDP-alpha-D-glucose + D-fructose 6-phosphate | - |
Brassica napus | UDP + sucrose 6-phosphate | - |
? | |
| UDP-alpha-D-glucose + D-fructose 6-phosphate | - |
Trifolium repens | UDP + sucrose 6-phosphate | - |
? | |
| UDP-alpha-D-glucose + D-fructose 6-phosphate | - |
Ipomoea batatas | UDP + sucrose 6-phosphate | - |
? | |
| UDP-alpha-D-glucose + D-fructose 6-phosphate | catalyzes the penultimate step of sucrose synthesis | Hordeum vulgare | UDP + sucrose 6-phosphate | - |
? | |
| UDP-alpha-D-glucose + D-fructose 6-phosphate | catalyzes the penultimate step of sucrose synthesis | Solanum tuberosum | UDP + sucrose 6-phosphate | - |
? | |
| UDP-alpha-D-glucose + D-fructose 6-phosphate | catalyzes the penultimate step of sucrose synthesis | Brassica napus | UDP + sucrose 6-phosphate | - |
? | |
| UDP-alpha-D-glucose + D-fructose 6-phosphate | catalyzes the penultimate step of sucrose synthesis | Trifolium repens | UDP + sucrose 6-phosphate | - |
? | |
| UDP-alpha-D-glucose + D-fructose 6-phosphate | catalyzes the penultimate step of sucrose synthesis | Ipomoea batatas | UDP + sucrose 6-phosphate | - |
? | |
pH Optimum
| pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|
| 6 | - |
broad optimum | Ipomoea batatas |
| 6.5 | - |
broad optimum | Hordeum vulgare |
pH Range
| pH Minimum | pH Maximum | Comment | Organism |
|---|---|---|---|
| 4.5 | 9 | very low activity at pH 4.5 | Hordeum vulgare |
| 4.5 | 9 | very low activity at pH 4.5 | Ipomoea batatas |
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Release 2023.1 (January 2023)
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