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The enzyme ATCase (Aspartate TransCarbamoylase) catalyzes an early step in the synthesis of the pyrimidine nucleotides. The activities of the ATCase reactions are shown in the following plots. Which one of the following statements is most correct description about this enzyme and/or this enzyme-catalyzed reaction? ATP No allosteric effectors Vo CTP ATCase 10 20 30 40 [Aspartate) (mM) O A. This enzyme is allosterically inhibited by ATP. O B. This enzyme is composed of multiple subunits. OC. "ATP" binds to catalytic subunits of ATCase. D."CTP" binds to the R-state enzyme. E. At high concentrations of ATP, ATP binds to the T-state enzyme, thus increase the affinity for the substrate [S).

The enzyme ATCase (Aspartate TransCarbamoylase) catalyzes an early step in the synthesis of the pyrimidine nucleotides. The activities of the ATCase reactions are shown in the following plots. Which one of the following statements is most correct description about this enzyme and/or this enzyme-catalyzed reaction? ATP No allosteric effectors Vo CTP ATCase 10 20 30 40 [Aspartate) (mM) O A. This enzyme is allosterically inhibited by ATP. O B. This enzyme is composed of multiple subunits. OC. "ATP" binds to catalytic subunits of ATCase. D."CTP" binds to the R-state enzyme. E. At high concentrations of ATP, ATP binds to the T-state enzyme, thus increase the affinity for the substrate [S).

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
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The enzyme ATCase (Aspartate TransCarbamoylase) catalyzes an early step in the synthesis of the pyrimidine nucleotides. The activities of the ATCase reactions are shown in the following plots. Which one of the following statements is most correct description about this enzyme and/or this enzyme-catalyzed reaction? ATP No allosteric effectors Vo CTP ATCase 10 20 30 40 (Aspartate] (mM) O A. This enzyme is allosterically inhibited by ATP. B. This enzyme is composed of multiple subunits. C. "ATP" binds to catalytic subunits of ATCase. O D."CTP" binds to the R-state enzyme. O E. At high concentrations of ATP, ATP binds to the T-state enzyme, thus increase the affinity for the substrate [S].
Transcribed Image Text:The enzyme ATCase (Aspartate TransCarbamoylase) catalyzes an early step in the synthesis of the pyrimidine nucleotides. The activities of the ATCase reactions are shown in the following plots. Which one of the following statements is most correct description about this enzyme and/or this enzyme-catalyzed reaction? ATP No allosteric effectors Vo CTP ATCase 10 20 30 40 (Aspartate] (mM) O A. This enzyme is allosterically inhibited by ATP. B. This enzyme is composed of multiple subunits. C. "ATP" binds to catalytic subunits of ATCase. O D."CTP" binds to the R-state enzyme. O E. At high concentrations of ATP, ATP binds to the T-state enzyme, thus increase the affinity for the substrate [S].
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