E3 of the pyruvate dehydrogenase complex performs which main function? A) removing a proton from TPP forming a carbanion b) catalyzing the condensation of the TPP carbanion with pyruvate to form hydroxyethyl-TPP c) oxidation and transfer of the hydroxyethyl group to lipoic acid d) reoxidation of lipoic acid in order to keep the reaction goingOnce acetyl-CoA is formed, it usually takes one of two paths. The first is further oxidation in the citric acid cycle. The second is: a) conversion to oxaloacetate which generates glucose by gluconeogenesis b) synthesis of galactose c) activates transcription factors which signal the synthesis of peptidase enzymes d) it is used in the synthesis of fatty acids.

The objective of the first question is to identify the main function of E3, also known as…

Answered: E3 of the pyruvate dehydrogenase…

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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E3 of the pyruvate dehydrogenase complex performs which main function? A) removing a proton from TPP forming a carbanion b) catalyzing the condensation of the TPP carbanion with pyruvate to form hydroxyethyl-TPP c) oxidation and transfer of the hydroxyethyl group to lipoic acid d) reoxidation of lipoic acid in order to keep the reaction going

Once acetyl-CoA is formed, it usually takes one of two paths. The first is further oxidation in the citric acid cycle. The second is: a) conversion to oxaloacetate which generates glucose by gluconeogenesis b) synthesis of galactose c) activates transcription factors which signal the synthesis of peptidase enzymes d) it is used in the synthesis of fatty acids.

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