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Literature summary for 2.4.1.21 extracted from
- Mutations affecting starch synthase III in Arabidopsis alter leaf starch structure and increase the rate of starch synthesis (2005), Plant Physiol., 138, 663-674.
Natural Substrates/ Products (Substrates)
| Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| ADP-glucose + alpha-1,4-polyglucan | Arabidopsis thaliana | two insertion mutations at the AtSS3 gene locus, termed Atss3-1 and Atss3-2, condition complete loss of SSIII activity and prevent normal gene expression at both the mRNA and protein levels. Total SS activity is increased in both Atss3 mutants and a specific SS activity appears to be upregulated. In addition to its expected direct role in starch assembly, SSIII also has a negative regulatory function in the biosynthesis of transient starch in Arabidopsis | ADP + alpha-1,4-polyglucan | - |
? |  |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Arabidopsis thaliana | - |
- |
- |
Source Tissue
| Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|
| leaf | - |
Arabidopsis thaliana | - |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| ADP-glucose + alpha-1,4-polyglucan | two insertion mutations at the AtSS3 gene locus, termed Atss3-1 and Atss3-2, condition complete loss of SSIII activity and prevent normal gene expression at both the mRNA and protein levels. Total SS activity is increased in both Atss3 mutants and a specific SS activity appears to be upregulated. In addition to its expected direct role in starch assembly, SSIII also has a negative regulatory function in the biosynthesis of transient starch in Arabidopsis | Arabidopsis thaliana | ADP + alpha-1,4-polyglucan | - |
? | |
Synonyms
| Synonyms | Comment | Organism |
|---|---|---|
| SSIII | - |
Arabidopsis thaliana |
| starch synthase III | - |
Arabidopsis thaliana |
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