BIOCHEM-ACHIEVE(FIRST DAY DISCOUNTED)
9th Edition
ISBN: 2818000069358
Author: BERG
Publisher: MAC HIGHER
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Question
Chapter 10, Problem 1P
Interpretation Introduction
Interpretation: The function of aspartate transcarbamoylase is to be stated.
Concept introduction: Enzymes being the catalysts increase the
Expert Solution & Answer
Answer to Problem 1P
The function of aspartate transcarbamoylase is to convert aspartate and carbamoyl phosphate into the compound, N-carbamoylaspartate and inorganic phosphate.
Explanation of Solution
The enzyme, aspartate transcarbamoylase contains two polypeptides which are having different roles. The first polypeptide chain works as a catalytic subunit that helps in carrying the amino acid carbamylation. The second polypeptide chain works as a regulatory subunit. This second polypeptide possesses regulatory sites.
Thus, the enzyme, aspartate transcarbamoylase helps in the condensation of aspartate and carbamoyl phosphate into the compound, N-carbamoylaspartateand also into the inorganic phosphate.
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The enzyme lactate dehydrogenase (LDH) catalyzes the conversion of pyruvate to lactatein skeletal muscle cells using NAD/NADH during anaerobic “balanced” fermentation.Answer the following questions about this reaction.
(a) Write out the two reductive half reactions and indicate the E ̊' for each half reaction. Write out the full balanced reaction for the pyruvate to lactate rxn and indicate the ∆E ̊' for the reaction.
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Why did the authors worry about the temperature-dependent solubility of the carriers in thebilayer? How did the authors determine whether the effect of freezing the lipid bilayer wasto decrease the solubility of the carriers (nonactin and valinomycin) or whether the effectwas to impair their ability to diffuse through the membrane (decrease their mobility)?
Kranse et. al. measured the temperature dependence of conductance using membranescontaining the phospholipids glyceryl dipalmitate and glyceryl distearate. Describe themodifications in membrane content that you would employ to:
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Chapter 10 Solutions
BIOCHEM-ACHIEVE(FIRST DAY DISCOUNTED)
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