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Literature summary for 2.4.1.13 extracted from
- Sucrose synthase isoforms in cultured tobacco cells (2004), Plant Physiol. Biochem., 42, 299-306.
Activating Compound
| Activating Compound | Comment | Organism | Structure |
|---|---|---|---|
| actin | activity of SuSy2 in breakdown direction is stimulated by 60% | Nicotiana tabacum |  |
| fructose 2,6-bisphosphate | stimulates SuSy2 in presence of actin | Nicotiana tabacum | |
Inhibitors
| Inhibitors | Comment | Organism | Structure |
|---|---|---|---|
| actin | 0.001 mM, 17% inhibition of SuSy1 | Nicotiana tabacum | |
| D-fructose | 10 mM, about 80% loss of activity, SuSy1 | Nicotiana tabacum | |
KM Value [mM]
| KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 0.0076 | - |
UDP | 25°C, isoform SuSy1 | Nicotiana tabacum | |
| 0.032 | - |
UDP | 25°C, isoform SuSy2 | Nicotiana tabacum | |
| 0.42 | - |
UDP-glucose | 25°C, isoform SuSy1 | Nicotiana tabacum | |
| 0.45 | - |
UDP-glucose | 25°C, isoform SuSy2 | Nicotiana tabacum | |
| 1.05 | - |
D-fructose | 25°C, isoform SuSy1 | Nicotiana tabacum | |
| 2.65 | - |
D-fructose | 25°C, isoform SuSy2 | Nicotiana tabacum | |
| 22.3 | - |
sucrose | 25°C, isoform SuSy1 | Nicotiana tabacum | |
| 30.3 | - |
sucrose | 25°C, isoform SuSy2 | Nicotiana tabacum | |
Localization
| Localization | Comment | Organism | GeneOntology No. | Textmining |
|---|---|---|---|---|
| cytoskeleton | associated to | Nicotiana tabacum | 5856 | - |
| cytosol | - |
Nicotiana tabacum | 5829 | - |
| membrane | bound to | Nicotiana tabacum | 16020 | - |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Nicotiana tabacum | - |
- |
- |
Purification (Commentary)
| Purification (Comment) | Organism |
|---|---|
| isoform SuSy1 and SuSy2 | Nicotiana tabacum |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| UDP + sucrose | - |
Nicotiana tabacum | UDP-glucose + D-fructose | - |
r | |
Synonyms
| Synonyms | Comment | Organism |
|---|---|---|
| SuSy | - |
Nicotiana tabacum |
Turnover Number [1/s]
| Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 4.97 | - |
sucrose | SuSy1, 25°C | Nicotiana tabacum | |
| 39.5 | - |
sucrose | SuSy2, 25°C | Nicotiana tabacum | |
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Release 2023.1 (January 2023)
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