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Lysine Residue 133 serves as the nucleophile and attacks the carbonyl group of 2-Keto-3-deoxy-6-phosphogluconate to form a protonated carbinolamine intermediate, also known as a Schiff base intermediate. [7] [9] [10] The intermediate is stabilized by hydrogen bonding with residues in the active site. [9]
Uses the unique enzymes 6-phosphogluconate dehydratase and 2-keto-deoxy-6-phosphogluconate (KDPG) aldolase and other common metabolic enzymes to other metabolic pathways to catabolize glucose to pyruvate. [1] In the process of breaking down glucose, a net yield of 1 ATP is formed per every one glucose molecule processed, as well as 1 NADH and 1 ...
In those microorganisms which host the Entner-Doudoroff pathway, 6-phosphogluconic acid may also be acted upon by 6-phosphogluconate dehydratase to produce 2-keto-3-deoxy-6-phosphogluconate. v t
KDPG-aldolase RNAs appear to be in the 5′ untranslated regions of enterobacterial genes that are annotated as encoding aldolases of 2-keto-3-deoxy-6-phosphogluconate or 2-keto-4-hydroxyglutarate. References
The systematic name of this enzyme class is ATP:2-dehydro-3-deoxy-D-gluconate 6-phosphotransferase. Other names in common use include 2-keto-3-deoxygluconokinase , 2-keto-3-deoxy-D-gluconic acid kinase , 2-keto-3-deoxygluconokinase (phosphorylating) , 2-keto-3-deoxygluconate kinase , and ketodeoxygluconokinase .
The systematic name of this enzyme class is 6-phospho-D-gluconate hydro-lyase (2-dehydro-3-deoxy-6-phospho-D-gluconate-forming). Other names in common use include 6-phosphogluconate dehydratase , 6-phosphogluconic dehydrase , gluconate-6-phosphate dehydratase , gluconate 6-phosphate dehydratase , 6-phosphogluconate dehydrase , and 6-phospho- D ...
The hydroxyl on carbon 1 of glucose 6-phosphate turns into a carbonyl, generating a lactone, and, in the process, NADPH is generated. 6-phosphoglucono-δ-lactone + H 2 O: → 6-phosphogluconate + H + 6-phosphogluconolactonase: Hydrolysis: 6-phosphogluconate + NADP + → ribulose 5-phosphate + NADPH + CO 2: 6-phosphogluconate dehydrogenase ...
Without pyruvate kinase, A. baylyi can produces pyruvate from the cleavage of 2-keto-3-deoxy-6-phosphogluconate. Additional pyruvate is produced from the enzymatic conversion of phosphoenolpyruvate to oxalacetate, then malate, and then pyruvate. [27]