can you tell me step by step, what is happening to convert L-luciferin to D-luciferin? the chemistru behind it Vu IacIVI Conations. H,N COOH COOH HS L-cysteine L-luciferin D-luciferin Luciferyl-CoA synthase (Luciferase) ATP, Mg, COA OH d-s-COA CoA L-luciferyl-CoA (enol) D-luciferyl-CoA hydrolysis enzyme hydrolysis enzyme COOH L-luciferin D-luciferin Download : Download full-size image

can you tell me step by step, what is happening to convert L-luciferin to D-luciferin? the chemistru behind it Vu IacIVI Conations. H,N COOH COOH HS L-cysteine L-luciferin D-luciferin Luciferyl-CoA synthase (Luciferase) ATP, Mg, COA OH d-s-COA CoA L-luciferyl-CoA (enol) D-luciferyl-CoA hydrolysis enzyme hydrolysis enzyme COOH L-luciferin D-luciferin Download : Download full-size image

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter29: The Organic Chemistry Of Metabolic Pathways

Section29.SE: Something Extra

Problem 51AP: In glycerol metabolism, the oxidation of sn-glycerol 3-phosphate to give dihydroxyacetone phosphate...

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Write the mechanism of the reaction shown in Figure 21-9 between coenzyme A and acetyl adenylate to give acetyl CoA.
1. a.) What is the toxic product of the oxidative deamination of of glutamate? b.) How does the body get rid of it? c.) If the urea cycle is inhibited, in what other ways can the body get rid of NH4+ ions? d.) The metabolism of the carbon skeleton of tyrosine yields pyruvate. Why is tyrosine a glucogenic amino acid?
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Which of the reactions are spontaneous (favorable)? 1)DHAP↽−−⇀glyceraldehyde-3-phosphateΔ?=3.8 kJ/mol 2)L-malate+NAD+⟶oxaloacetate+NADH+H+Δ?=29.7 kJ/mol- 3) glutamate+NAD++H2O⟶NH+4+α-ketoglutarate+NADH+H+Δ?=3.7 kcal/ 4) C6H13O9P+ATP⟶C6H14O12P2+ADPΔ?=−14.2KJ/mol 5) −Rh(I)C2H6Δ?=−150.97 kJ/molC2H4+H2→Rh(I)C2H6ΔG=−150.97 kJ/mol 6) C4H4O5⟶C4H2O4+H2OΔ?=3.1 kJ/mol
What does carboxypeptidase means? And please ɡive example when it reacts with fraɡments
please please help me to answer it >>> i have an exam Human xanthine oxidase catalyzes the oxidation of hypoxanthine to xanthine and can furthercatalyze the oxidation of xanthine to uric acid. For the treatment of hyperuricemia and gout,several medications are used to inhibit the activity of xanthine oxidase and reduce theproduction of uric acid. You are a biochemist and just discovered a chemical that can inhibitthe activity of the human xanthine oxidase. When analyzing its mode of inhibition, you foundthat the enzyme inhibitor complex requires 450 J.mol-1 to dissociate and that it displayskinetics somehow similar to noncompetitive inhibition. You sent your inhibitor to the ministryof health for approval as a medication for gout. Based on the data provided, are they going toauthorize it as a medication or not? Explain?
The vitamin Niacin is used to form nicotinamide adenosine dinucleotide, which readily shuttles between its oxidized (NAD+) and reduced (NADH) forms. The latter serves as a cellular equivalent to NaBH4. The essential portions of the structures are shown below. Outline a mechanism for the cellular conversion of pyruvate to lactate. (Note: like NaBH4, NADH cannot reduce carboxylic acid carbonyls).
The final step in the metabolic degradation of uracil is the oxidation of malonic semialdehyde to give malonyl CoA. Propose a mechanism.
In glycerol metabolism, the oxidation of sn-glycerol 3-phosphate to give dihydroxyacetone phosphate is catalyzed by sn-glycerol-3-phosphate dehydrogenase, with NAD+ as cofactor. The reaction is stereospecific, occurring exclusively on the Re face of the nicotinamide ring.
An experimenter using acetyl-CoA with a 14C on the carbonyl group traces the radioactive label in cells synthesizing cholesterol. On what atoms of mevalonate will the label appear?
① H+ + HCO3─ + Pi → Carboxyphosphate + H2O ∆G0’ =+19.7 kJ mol-1 ② ATP + H2O → ADP + Pi + H+ ∆G0’ = ─30.5 kJ mol-1 ③ Carboxyphosphate + pyruvate → oxaloacetate + Pi ∆G0’ = ??? kJ mol-1 ④ Overall reaction: ATP + HCO3─ + pyruvate → oxaloacetate + ADP + Pi ∆G0’ = ─2.1 kJ mol-1 a) Use reactions ①, ② and overall reaction ④ to calculate the ∆G0’ for the formation of oxaloacetate from pyruvate and carboxyphosphate (reaction ③ above). Use reactions ①, ② and overall reaction ④ to calculate the ∆G0’ for the formation of oxaloacetate from pyruvate and carboxyphosphate (reaction ③ above). b) Now calculate ∆G0’ for the formation of oxaloacetate from pyruvate and bicarbonate in the absence of ATP. c) Explain the difference in your answers to parts a and b.
Identify all the reducing sugars: