ENZYME entry: EC 2.4.1.140
| Accepted Name |
|---|
| alternansucrase.
|
| Alternative Name(s) |
|---|
| sucrose:1,6-, 1,3-alpha-D-glucan 3-alpha- and 6-alpha-D-
glucosyltransferase. |
| sucrose-1,6(3)-alpha-glucan 6(3)-alpha-glucosyltransferase. |
| Reaction catalysed |
|---|
| Transfers alternately an alpha-D-glucosyl residue from sucrose to the 6-position and the 3-position of the non-reducing terminal residue of an alpha-D-glucan, thus producing a glucan having alternating alpha-(1->6)-and alpha-(1->3)-linkages |
| Comment(s) |
|---|
- The glucansucrases transfer a D-glusosyl residue from sucrose to a
glucan chain.
- They are classified based on the linkage by which they attach the
transferred residue.
- In some cases, in which the enzyme forms more than one linkage type,
classification relies on the relative proportion of the linkages that
are generated.
- This enzyme forms both alpha(1->3) and alpha(1->6) linkages in
approximately equal amounts by alternating the linkage type.
- Cf. EC 2.4.1.125.
|
| Cross-references |
|---|
| BRENDA | 2.4.1.140 |
| EC2PDB | 2.4.1.140 |
| ExplorEnz | 2.4.1.140 |
| PRIAM enzyme-specific profiles | 2.4.1.140 |
| KEGG Ligand Database for Enzyme Nomenclature | 2.4.1.140 |
| IUBMB Enzyme Nomenclature | 2.4.1.140 |
| IntEnz | 2.4.1.140 |
| MEDLINE | Find literature relating to 2.4.1.140 |
| MetaCyc | 2.4.1.140 |
| Rhea expert-curated reactions | 2.4.1.140 |
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