3-Dehydroquinic acid (BioDeep_00000004525)

描述信息

3-Dehydroquinic acid belongs to the class of organic compounds known as alpha-hydroxy acids and derivatives. These are organic compounds containing a carboxylic acid substituted with a hydroxyl group on the adjacent carbon. 3-Dehydroquinic acid is an extremely weak basic (essentially neutral) compound (based on its pKa). In most organisms, 3-dehydroquinic acid is synthesized from D-erythrose-4-phosphate in two steps. However, archaea genomes contain no orthologs for the genes that encode these first two steps. Instead, archaeabacteria appear to utilize an alternative pathway in which 3-dehydroquinic acid is synthesized from 6-deoxy-5-ketofructose-1-phosphate and L-aspartate-semialdehyde. These two compounds are first condensed to form 2-amino-3,7-dideoxy-D-threo-hept-6-ulosonate, which cyclizes to 3-dehydroquinic acid. From 3-dehydroquinic acid and on to chorismate, the archaeal pathway appears to be identical to the bacterial pathway.
In most organisms, 3-dehydroquinate is synthesized from D-erythrose-4-phosphate in two steps . However, the genomes of the archaea contain no orthologs for the genes that encode these first two steps. Instead, archaeabacteria appear to utilize an alternative pathway in which 3-dehydroquinate is synthesized from 6-deoxy-5-ketofructose-1-phosphate and L-aspartate-semialdehyde . These two compounds are first condensed to form 2-amino-3,7-dideoxy-D-threo-hept-6-ulosonate , which cyclizes to 3-dehydroquinate . From 3-dehydroquinate and on to chorismate , the archaeal pathway appears to be identical to the bacterial pathway [HMDB]. 3-Dehydroquinate is found in many foods, some of which are allium (onion), cashew nut, american cranberry, and common wheat.

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