What is the function of glyceraldehyde 3-phosphate dehydrogenase? catalyzes the transfer of a phosphoryl group from ATP to an acceptor oxidation of the alcohol to an aldehyde dehydration and dephosphorylation of GAP hydrolysis of GAP oxidation by NAD+ and formation of acyl-phosphate
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What is the function of glyceraldehyde 3-phosphate dehydrogenase?
catalyzes the transfer of a phosphoryl group from ATP to an acceptor
oxidation of the alcohol to an
dehydration and dephosphorylation of GAP
hydrolysis of GAP
oxidation by NAD+ and formation of acyl-phosphate
Step by step
Solved in 2 steps
- Examine the ActiveModel for alcohol dehydrogenase and describe the structure and function of the catalytic zinc center.Refer to Figure, which indicates ∆G for each glycolytic reaction under intracellular conditions. Assume that glyceraldehyde-3-phosphate dehydrogenase was inhibited with iodoacetate, which reacts with its active site cysteine sulfhydryl group. Which glycolytic intermediate would you expect to accumulate most rapidly, and why?Which one of the following regarding the chemistry of glycolysis & gluconeogenesis is FALSE? Reaction 6 of glycolysis catalyzed by glyceraldehyde-3-phosphate dehydrogenase involves oxidation & addition of a P; group. Reaction 3 of gluconeogenesis catalyzed by enolase involves hydration, the addition of water to a carbon-carbon double bond (C=C) to form an alcohol. Reaction 1 of gluconeogenesis catalyzed by pyruvate carboxylase involves decarboxylation. Reaction 9 of gluconeogenesis catalyzed by fructose-1,6-bisphosphatase involves dephosphorylation (phosphoester hydrolysis). Reaction 1 of glycolysis catalyzed by hexokinase involves phosphorylation (using ATP). O 0000
- Consider the following reaction of the glycolysis pathway. Which statement is NOT true regarding this reaction? P + C-H NADH + H+ NAD+ C-0-P H-C-OH H-C-OH Glyceraldehyde- CH₂0-P 3-phosphate dehydrogenase CH₂0-P 1,3-Bisphosphoglycerate Glyceraldehyde-3- phosphate O A one-carbon compound (1C) is converted into a two-carbon compound (2C). O It requires a coenzyme. O It is a redox reaction catalyzed by the enzyme glyceraldehyde-3-phosphate dehydrogenase. O It is a phosphorylation reaction.Which of the following statements inaccurately describes glutamate dehydrogenase? Glutamate dehydrogenase uses either NAD+ or NADP+ in a redox reaction Glutamate dehydrogenase catalyzes an oxidative deamination reaction Glutamate dehydrogenase equilibrium lies with the reductive amination of glutamate Glutamate dehydrogenase utilizes hydrolysis to release ammonium from an imine intermediateDraw the products of the reaction of xylulose-5-phosphate and erythrose-4-phosphate catalyzed by transketolase in the pentose phosphate pathway. Provide the structure in the protonation state found in physiological conditions. H H H OH FO HO-H H-OH H OPO3²- Q transketolase Draw glyceraldehyde-3- phosphate H H- H H H O OH OH OPO3²- Draw fructose-6- phosphate Q I I
- Arsenate (HAsO42-) can replace inorganic phosphate (Pi) in the reaction catalyzed by glyceraldehyde 3-phosphate dehydrogenase, causing Glyceraldehyde 3-phosphate to be directly converted to 3-phosphoglycerate (NADH is still formed). If a cell is expose to Arsenate, which of the following metabolites of glycolysis will not be detectable in the cell? 2-phosphoglycerate 3-phosphoglycerate Fructose 6-phosphate Glucose 6-phosphate 1,3-bisphosphoglycerateArsenate (HASO42-) can replace inorganic phosphate (Pi) in the reaction catalyzed by glyceraldehyde 3-phosphate dehydrogenase, causing Glyceraldehyde 3-phosphate to be directly converted to 3-phosphoglycerate (NADH is still formed). If a cell is expose to Arsenate, which of the following metabolites of glycolysis will not be detectable in the cell? 2-phosphoglycerate B 3-phosphoglycerate Fructose 6-phosphate Glucose 6-phosphate E 1,3-bisphosphoglycerateOrder the cofactors based on their use in the mechanism of the a-ketogluterate dehydrogenase complex. 1. Stabilizes a carbanion due to decarboxylation 2. Allows for the splitting of the carbon skeleton from the electron pair generated in a redox reaction 3. Enzyme bond electron carrier that is part of dihydrolipoyl dehydrogenase 4. Final electron acceptor in the overall reaction catalyzed by this complex 1 (Choose ] [Choose ] FAD Lipoamide 2 Fe 2S cluster TPP Biotin 3. NAD+ 4 [Choose ] 2.
- Show the carbon atom that changes oxidation state during the reaction catalyzed by glyceraldehyde-3-phosphate dehydrogenase. What is the functional group that changes during the reaction?Indicate the general type of enzyme that mediates each glycolysis reaction depicted below. (e.g. Transferase, Oxidoreductase, Kinase, Hydrolase, Lyase, or Isomerase) iii. O H Glyceraldehyde-3-phosphate → 1,3-Bisphosphoglycerate H-C-OH + NAD CH₂O-P + P₁ H-O- -C-H Glucose →→ Glucose-6-phosphate H b 0 OH HO OH H-C- 0 -H HO- H ОН H-C-OH + NADH +H+ CH₂O P P ATP ADP 1 H (P-O- -C- H H HO OH 2-Phosphoglycerate → Phosphoenolpyruvate 0 OH H ОН -O~(P) + HOHWhat if the phosphate group for the glycolysis reaction with enzyme glyceraldehyde 3-phosphate dehydrogenase was from ATP instead of Pi? What would the complete, balanced, net rxn of glycoslysisequation be and how does this impact the overall glycolysis rxn?