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Literature summary for 2.4.1.21 extracted from
- Overlapping functions of the starch synthases SSII and SSIII in amylopectin biosynthesis in Arabidopsis (2008), BMC Plant Biol., 8, 96.
Natural Substrates/ Products (Substrates)
| Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| ADP-glucose + (1,4-alpha-D-glucosyl)n | Arabidopsis thaliana | SSIII is able to partially function in production of DP12 to DP25 chains. SSIII is not required for the normal population of these chains | ADP + (1,4-alpha-D-glucosyl)n+1 | - |
? |  |
| ADP-glucose + (1,4-alpha-D-glucosyl)n | Arabidopsis sp. | the activity of SSII is required in Arabidopsis for production of the normal frequency of amylopectin chains of DP12 to DP25. None of the other SS classes can completely compensate for loss of SSII, however, SSIII is able to partially function in production of DP12 to DP25 chains | ADP + (1,4-alpha-D-glucosyl)n+1 | - |
? | |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Arabidopsis sp. | - |
- |
- |
| Arabidopsis thaliana | - |
ecotype Columbia | - |
Source Tissue
| Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|
| leaf | - |
Arabidopsis thaliana | - |
| leaf | - |
Arabidopsis sp. | - |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| ADP-glucose + (1,4-alpha-D-glucosyl)n | SSIII is able to partially function in production of DP12 to DP25 chains. SSIII is not required for the normal population of these chains | Arabidopsis thaliana | ADP + (1,4-alpha-D-glucosyl)n+1 | - |
? | |
| ADP-glucose + (1,4-alpha-D-glucosyl)n | the activity of SSII is required in Arabidopsis for production of the normal frequency of amylopectin chains of DP12 to DP25. None of the other SS classes can completely compensate for loss of SSII, however, SSIII is able to partially function in production of DP12 to DP25 chains | Arabidopsis sp. | ADP + (1,4-alpha-D-glucosyl)n+1 | - |
? | |
Synonyms
| Synonyms | Comment | Organism |
|---|---|---|
| AtSS2 | - |
Arabidopsis sp. |
| AtSSII | - |
Arabidopsis sp. |
| AtSSIII | - |
Arabidopsis thaliana |
| starch synthase | - |
Arabidopsis thaliana |
| starch synthase | - |
Arabidopsis sp. |
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