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The reaction catalyzed by citrate syn- thase, shown on the right, is the first step of the TCA cycle. In glycolysis, two key reactions to produce ATP occur because an unfavorable reaction is coupled to another reaction that is thermodynamically favorable. The reaction catalyzed by citrate synthase, shown on the right, is similarly coupled to an unfavorable reac- tion in the TCA cycle. Write the unfavorable reaction using structural formulas and write the key step that drives the two coupled reactions forward. What is the overall AGO of the coupled reactions? CH3-C 0=0 + S-CoA Acetyl-CoA 0-C-COO™ CH₂-COO™ Oxaloacetate H₂O COA-SH citrate synthase CH₂-C C HỌC—COO 0 CH₂-COO™ Citrate AG'= -32.2 kJ/mol

The reaction catalyzed by citrate syn- thase, shown on the right, is the first step of the TCA cycle. In glycolysis, two key reactions to produce ATP occur because an unfavorable reaction is coupled to another reaction that is thermodynamically favorable. The reaction catalyzed by citrate synthase, shown on the right, is similarly coupled to an unfavorable reac- tion in the TCA cycle. Write the unfavorable reaction using structural formulas and write the key step that drives the two coupled reactions forward. What is the overall AGO of the coupled reactions? CH3-C 0=0 + S-CoA Acetyl-CoA 0-C-COO™ CH₂-COO™ Oxaloacetate H₂O COA-SH citrate synthase CH₂-C C HỌC—COO 0 CH₂-COO™ Citrate AG'= -32.2 kJ/mol

Biochemistry
Biochemistry
6th Edition
ISBN:9781305577206
Author:Reginald H. Garrett, Charles M. Grisham
Publisher:Reginald H. Garrett, Charles M. Grisham
Chapter21: Photosynthesis
Section: Chapter Questions
Problem 5P: The Relative Efficiency of ATP Synthesis in Noncyclic versus Cyclic Photophosphorylation If...
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The reaction catalyzed by citrate syn- thase, shown on the right, is the first step of the TCA cycle. In glycolysis, two key reactions to produce ATP occur because an unfavorable reaction is coupled to another reaction that is thermodynamically favorable. The reaction catalyzed by citrate synthase, shown on the right, is similarly coupled to an unfavorable reac- tion in the TCA cycle. Write the unfavorable reaction using structural formulas and write the key step that drives the two coupled reactions forward. What is the overall AG'o of the coupled reactions? CH3-C >=0 + S-COA Acetyl-CoA 0-C-COO- CH₂-COO Oxaloacetate H₂O COA-SH J citrate synthase CH₂-C HỌ—C—COO SO CH₂-COO Citrate AG'= -32.2 kJ/mol
Transcribed Image Text:The reaction catalyzed by citrate syn- thase, shown on the right, is the first step of the TCA cycle. In glycolysis, two key reactions to produce ATP occur because an unfavorable reaction is coupled to another reaction that is thermodynamically favorable. The reaction catalyzed by citrate synthase, shown on the right, is similarly coupled to an unfavorable reac- tion in the TCA cycle. Write the unfavorable reaction using structural formulas and write the key step that drives the two coupled reactions forward. What is the overall AG'o of the coupled reactions? CH3-C >=0 + S-COA Acetyl-CoA 0-C-COO- CH₂-COO Oxaloacetate H₂O COA-SH J citrate synthase CH₂-C HỌ—C—COO SO CH₂-COO Citrate AG'= -32.2 kJ/mol
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