Please provide the reaction mechanism of the following reaction and indicate the direction of electron transfer 6 CH,OPO- CH,OPO- H HO aldolase OH 3 OH H 1,6-bisphosphate H (4) C (1) CH₂OPO3- (2) C=O T (5) CHOH | (3) CH₂OH (6)CH,OPO3 Dihydroxyacetone phosphate Glyceraldehyde 3-phosphate H Fructose +
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- The high phosphoryl transfer potential of 1,3-bisphosphoglycerate is explained by the resonance stability of the product, 3-phosphoglycerate. The same explanation applies to the reaction that generates resonance stabilized pyruvate from phosphoenolpyruvate. Show the resonance structures for both products, 3-phosphoglycerate and pyruvate, and state why the reactant in both reactions is not resonance stabilized.If you were to determine the P/O ratio for oxidation of α-ketoglutarate,you would probably include some malonate in your reaction system. Why?Under these conditions, what P/O ratio would you expect to observe?The mechanism involved in the reaction catalyzed by phosphoglyceromutase is known to involve a phosphorylatedenzyme intermediate. If 3-phosphoglycerate is radioactively labeledwith 32P, the product of the reaction, 2-phosphoglycerate, does nothave any radioactive label. Design a mechanism to explain these facts.
- Given each set of information which may include common name(s) and the reaction catalyzed, you are required to identify the main class of the specific enzyme described. _____________________1. Name: alkaline phosphataseReaction: a phosphate monoester + H2O = an alcohol + phosphate_____________________2. Reaction: L-threonine = D-threonine.Other information: Inverts both chiral centers, a racemase. _____________________3. Name: glycine-N-acylaseReaction: acyl-COA + glycine = CoA + N-acylglycine_____________________ 4. Name: lysine decarboxylaseReaction: L-lysine = cadaverine + CO2 _____________________5. Name: methanol dehydrogenaseReaction: methanol + NAD+ = formaldehyde + NADH + H+ _____________________6. Name: citryl-CoA synthetaseReaction: ATP + citrate + CoA = ADP + phosphate + (3S)-citryl-CoA_____________________7. Name: D-xylulose reductaseReaction: xylitol + NAD+ = D-xylulose + NADH + H+ _____________________8. Name: cellobiose phosphorylaseReaction: cellobiose phosphate =…If you were to determine the P/O ratio for oxidation of a-ketoglutarate, you would probably include some malonate in your reaction system. Why? Under these conditions, what P/O ratio would you expect to observe?The isoelectric point (pI) of 6-phosphogluconate dehydrogenase is 6.0. Explain why the buffer used in DEAE cellulose chromatography must have a pH greater than 6 but less than 9 in order for the enzyme to bind to the DEAE resin.
- Draw the structure of two different aldohexoses that yield the followingaldaric acid when oxidized with HNO3. Use Figure to name eachaldohexose5-phosphate) and an aldopentose (ribose-5-phosphate) to an aldotriose (glyceraldehyde-3-phosphate) and a ketoheptose (sedoheptulose-7-phosphate). Notice that the total number of carbons in the reactants andproducts is the same (5 + 5 = 3 + 7). Propose a mechanism for this reaction. xylulose-5-PCH2OH CH2OPO32−C OHOHHOH sedoheptulose-7-PIn order to function as an oxidative phosphorylation uncoupler, 2,4-dinitrophenol must act catalytically, not stoichiometrically. What does this mean? Identify and discuss an important implication of this conclusion.
- The equilibrium constant Kc for the reaction fructose-1,6-diphosphate ⇋ glyceraldehyde-3-phosphate + dihydroxyacetone phosphate is 8.9 x 10-5 M at 250C and the behavior is assumed to be ideal. Calculate .for the process (standard state: 1M) Suppose that we have a mixture that is initially 0.010 M in fructose-1,6-diphosphate and 1.0 x 10-5 M in both glyceraldehyde-3-phosphate and dihydroxyacetone phosphate. What is ?Assume that the reaction Arabinose +Pi <> Arabinose-6-P has a delta G of +13.0 kJ/mol and the reaction XTP <> XDP + Pi has a delta G of -25.7 kJ/mol. Calculate the delta G for the combined reaction Arabinose + XTP <> Arabinose-6-P + ADP, in kJ/mol to four significant figures.The equilibrium constant Kc for the reaction fructose-1,6-diphosphate ⇋ glyceraldehyde-3-phosphate + dihydroxyacetone phosphate is 8.9 x 10-5 M at 250C and the behavior is assumed to be ideal. Calculate the delta G for the process Suppose that we have a mixture that is initially 0.010 M in fructose-1,6-diphosphate and 1.0 x 10-5 M in both glyceraldehyde-3-phosphate and dihydroxyacetone phosphate. What is the delta G