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a The standard free energy (AG,') for the reduction of CoQ by FADH2 (consult Table 20.1) is -61.7 kJ/mol Citrate must be isomerized to Isocitrate because the tertiary alcohol group of Citrate is not oxidizable but the secondary b group of Isocitrate can be oxidized a-Ketoglutarate Dehydrogenase is a multi-enzyme complex analogous to Glyceraldehyde 3-Phosphate Dehydrogenase

a The standard free energy (AG,') for the reduction of CoQ by FADH2 (consult Table 20.1) is -61.7 kJ/mol Citrate must be isomerized to Isocitrate because the tertiary alcohol group of Citrate is not oxidizable but the secondary b group of Isocitrate can be oxidized a-Ketoglutarate Dehydrogenase is a multi-enzyme complex analogous to Glyceraldehyde 3-Phosphate Dehydrogenase

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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The standard free energy (AG,') for the reduction of CoQ by FADH2 (consult Table 20.1) is -61.7 kJ/mol a Citrate must be isomerized to Isocitrate because the tertiary alcohol group of Citrate is not oxidizable but the secondary b group of Isocitrate can be oxidized a-Ketoglutarate Dehydrogenase is a multi-enzyme complex analogous to Glyceraldehyde 3-Phosphate Dehydrogenase Under anaerobic conditions skeletal muscle generates lactate from Pyruvate to regenerate NAD+ for further Glycolysis For the Pyruvate Kinase reaction the correct sequence of events is substrate level phosphorylation - tautomerization keto form of Pyruvate – enol form of Pyruvate e Dihydroxyacetone Phosphate is an enantiomer of Glyceraldehyde-3-Phosphate CoQ shuttles electrons from Complex I and Il to Complex IV If[1-"C] Ribose-5-phosphate is incubated with a mixture of purified transketolase- transaldolase-phosphopentose h isomerase-phosphopentose epimerase and glyceraldehyde-3-phosphate the Erythrose-4-phosphate will be labeled in the 1 and 3 positions i Pyruvate Carboxylase activates CO, by ATP through formation of carboxyphosphate as an intermediate
Transcribed Image Text:The standard free energy (AG,') for the reduction of CoQ by FADH2 (consult Table 20.1) is -61.7 kJ/mol a Citrate must be isomerized to Isocitrate because the tertiary alcohol group of Citrate is not oxidizable but the secondary b group of Isocitrate can be oxidized a-Ketoglutarate Dehydrogenase is a multi-enzyme complex analogous to Glyceraldehyde 3-Phosphate Dehydrogenase Under anaerobic conditions skeletal muscle generates lactate from Pyruvate to regenerate NAD+ for further Glycolysis For the Pyruvate Kinase reaction the correct sequence of events is substrate level phosphorylation - tautomerization keto form of Pyruvate – enol form of Pyruvate e Dihydroxyacetone Phosphate is an enantiomer of Glyceraldehyde-3-Phosphate CoQ shuttles electrons from Complex I and Il to Complex IV If[1-"C] Ribose-5-phosphate is incubated with a mixture of purified transketolase- transaldolase-phosphopentose h isomerase-phosphopentose epimerase and glyceraldehyde-3-phosphate the Erythrose-4-phosphate will be labeled in the 1 and 3 positions i Pyruvate Carboxylase activates CO, by ATP through formation of carboxyphosphate as an intermediate
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