D-arabinose isomerase EC#: 5.3.1.3; ChemWhat Code: 1383186
| Product Name | D-arabinose isomerase |
| Example Structure |  |
| Synonyms | D-AI, D-arabinose aldose-ketose-isomerase, D-Arabinose isomerase, D-arabinose ketol-isomerase, D-Arabinose(L-fucose) isomerase, EC 5.1.3.25, Isomerase, arabinose, L-Fucose isomerase |
| EC Number | 5.3.1.3 |
| CAS Registry Number | 9023-81-8 |
| Comments | Requires a divalent metal ion (the enzyme from the bacterium?Escherichia coli?prefers Mn2+). The enzyme binds the closed form of the sugar and catalyses ring opening to generate a form of open-chain conformation that facilitates the isomerization reaction, which proceeds via an ene-diol mechanism [3]. The enzyme catalyses the aldose-ketose isomerization of several sugars. Most enzymes also catalyse the reaction of EC?5.3.1.25,?L-fucose isomerase [3]. The enzyme from the bacterium?Falsibacillus pallidus?also converts?D-altrose to?D-psicose [4].?cf. EC?5.3.1.4,?L-arabinose isomerase. |
| Cofactor | Mn2+ |
| History | |
| Reactions | D-arabinose = D-ribulose. |
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