A specialized lysine-linked co-enzyme often participates in the transfer of carbon fragments within an enzyme complex. Which group of three enzymes belowmake use of lysine-linked co-enztmes.Pyruvate dehydrogenase complex, a-Ketoglutarate dehydrogenase complex, NADH-Q oxidoreductasePyruvate dehydrogenase complex, Succinate-Q oxidoreductase, Pyruvate carboxylasePyruvate dehydrogenase complex, a-Ketoglutarate dehydrogenase complex, Pyruvate carboxylasePyruvate dehydrogenase complex, Succinate-Q oxidoreductase, NADH-QoxidoreductaseCoordinate regulation occurs when different metabolic pathways are impact by a common compound. Which molecules below are compounds of coordinatedregulation?Acety-CoAMolecular oxygenATPNADH

The small non-protein organic molecules which work along with enzymes in various catalytic reactions…

Answered: A specialized lysine-linked co-enzyme…

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter19: The Tricarboxylic Acid Cycle

Section: Chapter Questions

Problem 22P: Study Figure 19.18 and decide which of the following statements is false. Pyruvate dehydrogenase is...

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Which of the following is true about comparing the α-ketoglutarate dehydrogenase complex and the pyruvate dehydrogenase complex? Group of answer choices They catalyze reactions that produce the exact same set of products They are both dehydrogenase complexes, but have very different structures They both catalyze reactions that oxidize NADH to NAD+ They both use the same E3 enzyme component Which of the following best describes stage 2 of the citric acid cycle? Group of answer choices ATP production by the electron transport chain production of acetyl CoA regeneration of oxaloacetate release of 2 carbons as carbon dioxide
Of the allosteric enzymes listed below, which are suppressed by NADH? Select all that apply. the pyruvate dehydrogenase complex a-ketoglutarate dehydrogenase complex U isocitrate dehydrogenase pyruvate kinase Ophosphofructokinase hexokinase Oglucokinase
Identify the Krebs cycle enzyme that consumes a 3-carbon substrate molecule, producing a 2- carbon product molecule (attached to acetyl-CoA), along with NADH, and one molecule of CO2. succinyl CoA synthetase a-ketoglutarate dehydrogenase pyruvate dehydrogenase isocitrate dehydrogenase malate dehydrogenase
Which of the following is NOT a cofactor for the pyruvate dehydrogenase complex? Lipoate COA FAD NADP+ All of the above are cofactors for the PDH complex.
Which of the following catalyzes a step that does NOT produce CO2? Group of answer choices alpha-ketoglutarate dehydrogenase complex malate dehydrogenase pyruvate dehydrogenase complex isocitrate dehydrogenase Citrate synthase is regulated by... Group of answer choices Concentrations of substrate and products Fructose-2,6-Bisphosphate Covalent modification Allosteric regulation by the levels of NADDH
What is the first cofactor to accept electrons from pyruvate in the Pyruvate dehydrogenase complex? Thymine pyroposphate lipoyllysine FAD NAD⁺
Most defects in pyruvate dehydrogenase complex are due to mutations in ______, so supplements with ______ are given. E2 and TPP E1 and lipoamide E3 and NAD+ E2 and lipoamide E1 and TPP
Because dichloroacetate inhibits the enzyme pyruvatedehydrogenase kinase, this compound has been used,with limited results, to treat lactic acidosis. The phosphorylation of the a-subunit of the pyruvate dehydrogenasecomponent of the pyruvate dehydrogenase complex bypyruvate dehydrogenase kinase causes complete loss ofenzymatic activity. Describe the theory behind the clinicaluse of dichloroacetate.
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Arsenate (HAsO42-) can replace inorganic phosphate (Pi) in the reaction catalyzed by glyceraldehyde 3-phosphate dehydrogenase, causing Glyceraldehyde 3-phosphate to be directly converted to 3-phosphoglycerate (NADH is still formed). If a cell is expose to Arsenate, which of the following metabolites of glycolysis will not be detectable in the cell? 2-phosphoglycerate 3-phosphoglycerate Fructose 6-phosphate Glucose 6-phosphate 1,3-bisphosphoglycerate
. Identify the Krebs cycle enzyme which acts on a five-carbon substrate, produces a four-carbon product substituent (attached to coenzyme A), and generates one molecule of NADH. a-ketoglutarate dehydrogenase pyruvate dehydrogenase citrate synthase malate dehydrogenase succinate dehydrogenase Which of the following enzymes consumes one molecule of NADH, during anaerobic fermentation in yeast, as it converts a two-carbon substrate molecule into a two-carbon product molecule? succinate dehydrogenase pyruvate decarboxylase C. isocitrate dehydrogenase lactate dehydrogenase alcohol dehydrogenase
Arsenate (HASO42-) can replace inorganic phosphate (Pi) in the reaction catalyzed by glyceraldehyde 3-phosphate dehydrogenase, causing Glyceraldehyde 3-phosphate to be directly converted to 3-phosphoglycerate (NADH is still formed). If a cell is expose to Arsenate, which of the following metabolites of glycolysis will not be detectable in the cell? 2-phosphoglycerate B 3-phosphoglycerate Fructose 6-phosphate Glucose 6-phosphate E 1,3-bisphosphoglycerate

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