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Literature summary for 2.7.9.4 extracted from
- The glucan phosphorylation mediated by alpha-glucan, water dikinase (GWD) is also essential in the light phase for a functional transitory starch turn-over (2014), Plant Signal. Behav., 9, e28892.
Activating Compound
| Activating Compound | Comment | Organism | Structure |
|---|---|---|---|
| additional information | light increases the enzyme activity | Arabidopsis thaliana |
Localization
| Localization | Comment | Organism | GeneOntology No. | Textmining |
|---|---|---|---|---|
| starch granule | - |
Arabidopsis thaliana | - |
- |
Metals/Ions
| Metals/Ions | Comment | Organism | Structure |
|---|---|---|---|
| Mg2+ | required | Arabidopsis thaliana |  |
Natural Substrates/ Products (Substrates)
| Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| ATP + alpha-glucan + H2O | Arabidopsis thaliana | GWD phosphorylates the hydroxyl group at carbon atoms 6 | AMP + phospho-alpha-glucan + phosphate | - |
? | |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Arabidopsis thaliana | Q9SAC6 | - |
- |
Source Tissue
| Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|
| leaf | - |
Arabidopsis thaliana | - |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| ATP + alpha-glucan + H2O | GWD phosphorylates the hydroxyl group at carbon atoms 6 | Arabidopsis thaliana | AMP + phospho-alpha-glucan + phosphate | - |
? | |
Synonyms
| Synonyms | Comment | Organism |
|---|---|---|
| GWD | - |
Arabidopsis thaliana |
Cofactor
| Cofactor | Comment | Organism | Structure |
|---|---|---|---|
| ATP | - |
Arabidopsis thaliana | |
General Information
| General Information | Comment | Organism |
|---|---|---|
| physiological function | glucan phosphorylation mediated by alpha-glucan, water dikinase is essential in the light phase for a functional transitory starch turnover. The length of the light phase affects the phosphorylation state of the transitory starch and, by this, the average leaf starch content and the resulting growth of the plants. The longer the light period, the higher the starch phosphorylation rate at G-6 of alpha-glucan and the lower the starch content. Starch phosphorylation by GWD in the light phase is in parts necessary for proper starch degradation in the following night | Arabidopsis thaliana |
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