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Biosynthesis: The enzyme 3-dehydroquinate dehydratase uses 3-dehydroquinate to produce 3-dehydroshikimate and H 2 O. 3-Dehydroshikimate is then reduced to shikimic acid by the enzyme shikimate dehydrogenase, which uses nicotinamide adenine dinucleotide phosphate (NADPH) as a cofactor. Biosynthesis of shikimic acid from 3-dehydroquinate
In enzymology, a shikimate dehydrogenase (EC 1.1.1.25) is an enzyme that catalyzes the chemical reaction shikimate + NADP + ⇌ {\displaystyle \rightleftharpoons } 3-dehydroshikimate + NADPH + H + Thus, the two substrates of this enzyme are shikimate and NADP + , whereas its 3 products are 3-dehydroshikimate , NADPH , and H + .
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The enzyme 3-dehydroquinate dehydratase (EC 4.2.1.10) catalyzes the chemical reaction 3-dehydroquinate ⇌ {\displaystyle \rightleftharpoons } 3-dehydroshikimate + H 2 O This enzyme belongs to the family of lyases , specifically the hydro-lyases, which cleave carbon-oxygen bonds.
3-dehydroshikimate dehydratase (EC 4.2.1.118) is an enzyme with systematic name 3-dehydroshikimate hydro-lyase. [ 1 ] [ 2 ] This enzyme catalyses the following chemical reaction 3-dehydro-shikimate ⇌ {\displaystyle \rightleftharpoons } 3,4-dihydroxybenzoate + H 2 O
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Title English title Original airdate Production code 1 "Bolnica" The Hospital: December 22, 1974 (): 101: 2 "Garaža" The Garage: December 29, 1974 (): 102: 3 "Izdajnik" The Traitor
The fifth enzyme involved is the shikimate kinase, an enzyme that catalyzes the ATP-dependent phosphorylation of shikimate to form shikimate 3-phosphate (shown in the figure below). [1] [2] Shikimate 3-phosphate is then coupled with phosphoenol pyruvate to give 5-enolpyruvylshikimate-3-phosphate via the enzyme 5-enolpyruvylshikimate-3-phosphate ...