Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
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1,5-anhydro-D-fructose | Gracilariopsis lemaneiformis | 1,5-anhydro-D-fructose = 2-hydroxy-2-(hydroxymethyl)-2H-pyran-3(6H)-one + H2O (overall reaction), (1a) 1,5-anhydro-D-fructose = 1,5-anhydro-4-deoxy-D-glycero-hex-3-en-2-ulose + H2O, (1b) 1,5-anhydro-4-deoxy-D-glycero-hex-3-en-2-ulose = 2-hydroxy-2-(hydroxymethyl)-2H-pyran-3(6H)-one. This enzyme catalyses two of the steps in the anhydrofructose pathway, which leads to the degradation of glycogen and starch via 1,5-anhydro-D-fructose. The other enzymes involved in this pathway are EC 4.2.1.111 (1,5-anhydro-D-fructose dehydratase), EC 4.2.2.13 (exo-(1,4)-alpha-D-glucan lyase) and EC 5.3.3.15 (ascopyrone tautomerase). This is a bifunctional enzyme that acts as both a lyase and as an isomerase. Differs from EC 4.2.1.111, which can carry out only reaction 1a | 2-hydroxy-2-(hydroxymethyl)-2H-pyran-3(6H)-one + H2O | i.e. microthecin | ? |
Organism | UniProt | Comment | Textmining |
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Gracilariopsis lemaneiformis | - |
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Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
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1,5-anhydro-D-fructose | 1,5-anhydro-D-fructose = 2-hydroxy-2-(hydroxymethyl)-2H-pyran-3(6H)-one + H2O (overall reaction), (1a) 1,5-anhydro-D-fructose = 1,5-anhydro-4-deoxy-D-glycero-hex-3-en-2-ulose + H2O, (1b) 1,5-anhydro-4-deoxy-D-glycero-hex-3-en-2-ulose = 2-hydroxy-2-(hydroxymethyl)-2H-pyran-3(6H)-one. This enzyme catalyses two of the steps in the anhydrofructose pathway, which leads to the degradation of glycogen and starch via 1,5-anhydro-D-fructose. The other enzymes involved in this pathway are EC 4.2.1.111 (1,5-anhydro-D-fructose dehydratase), EC 4.2.2.13 (exo-(1,4)-alpha-D-glucan lyase) and EC 5.3.3.15 (ascopyrone tautomerase). This is a bifunctional enzyme that acts as both a lyase and as an isomerase. Differs from EC 4.2.1.111, which can carry out only reaction 1a | Gracilariopsis lemaneiformis | 2-hydroxy-2-(hydroxymethyl)-2H-pyran-3(6H)-one + H2O | i.e. microthecin | ? |