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3-Dehydroshikimic acid is a chemical compound related to shikimic acid. 3-DHS is available in large quantity through engineering of the shikimic acid pathway.
Metabolism
Biosynthesis: The enzyme 3-dehydroquinate dehydratase uses 3-dehydroquinate to produce 3-dehydroshikimate and H2O.
3-Dehydroshikimate is then reduced to shikimic acid by the enzyme shikimate dehydrogenase, which uses nicotinamide adenine dinucleotide phosphate (NADPH) as a cofactor.
Gallic acid is also formed from 3-dehydroshikimate by the action of the enzyme shikimate dehydrogenase to produce 3,5-didehydroshikimate. This latter compound spontaneously rearranges to gallic acid.
References
3-Dehydroshikimic acid Wikipedia(Text) CC BY-SA