*Which of the following statements about allosteric enzymes is NOT true? Question 10 options: - They are regulated by positive and negative modulators - They have more than one native conformation - Their activity is altered by phosphorylation - They often catalyse a reaction at the beginning of a metabolic pathway please explain than give answer

*Which of the following statements about allosteric enzymes is NOT true? Question 10 options: - They are regulated by positive and negative modulators - They have more than one native conformation - Their activity is altered by phosphorylation - They often catalyse a reaction at the beginning of a metabolic pathway please explain than give answer

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter27: Metabolic Integration And Organ Specialization

Section: Chapter Questions

Problem 20P: Figure 27.3 illustrates the response of R (ATP-regenerating) and U (ATP-utilizing) enzymes to energy...

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Consider two enzymes catalyzing two reactions (A --> B --> C ) in a metabolic cascade with their properties summarized below: Keg (for reaction) Enzyme Reaction KM Kcat / KM 102 M-1s-1 108 M-1s-1 1 A --> B 1 1 mM 2 B --> C 10 10 mM Initial concentrations are [A] = 0.1 mM and [B] = [C] = 0 and both enzymes are present at concentrations of 1 mM. After waiting for 1 ms, the concentrations of A, B, and C are measured. How do you expect the concentrations to be ordered? O [B] > [A] > [C] O [C] > [B] > [A] O [A] > [B] > [C] O [A] > [C] > [B] [C] > [A] > [B]
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hich of the following are advantages of quaternary structure? Choose all correct nswers 1) The genes may be for single subunits, rather than requirement for transcription and translation of giant sequences 2) Subunit construction may provide the structural basis for protein regulation 3) Multi-subunit proteins are more water soluble than single subunit proteins of the same size 4) Defects in protein synthesis may be fixed at the subunit level, rather than giant polypeptide level 5) May have multiple active sites - one on each subunit
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