| ketole | 1. 2,3-Benzopyrrole;basis of many biologically active substances (e.g., serotonin, tryptophan); formed in degradation of tryptophan. Synonym: ketole. 2. Any of many alkaloids containing the indole structure. (05 Mar 2000) |
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| ketole group | Carbons 1 and 2 of a 2-ketose (HOCH2CO-); trans-ketolation from d-xylose 5-phosphate to C-1 of aldoses is important in various metabolic pathways involving carbohydrates (e.g., photosynthesis, Dickens shunt); the two-carbon unit is transferred as a,beta-dihydroxyethyl thiamin pyrophosphate. (05 Mar 2000) |
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