Biochemistry
Biochemistry
8th Edition
ISBN: 9781464126109
Author: Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr., Lubert Stryer
Publisher: W. H. Freeman
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Chapter 22, Problem 52P
Interpretation Introduction

(a)

Interpretation:

The effect of enzyme mutation on enzyme activity with varying concentrations of carnitine must be determined.

The KM and Vmax values of wild-type and mutant enzymes must be determined.

Concept introduction:

Carnitine palmitoyl transferase I is a mitochondrial enzyme, which forms acyl carnitine by catalyzing the reaction between acyl CoA, and l-carnitine. This allows the transfer of fatty acid chain from cytosol to the mitochondria of the cell. there are three isoforms of CPT I enzyme, CPT1A, CPT1B, and CPT1C.

Interpretation Introduction

(b)

Interpretation:

The effect of enzyme mutation on enzyme activity with varying concentrations of palmitoyl CoA must be determined.

The KM and Vmax values of wild-type and mutant enzymes must be determined.

Concept introduction:

Carnitine palmitoyl transferase I is a mitochondrial enzyme, which forms acyl carnitine by catalyzing the reaction between acyl CoA, and l-carnitine. This allows the transfer of fatty acid chain from cytosol to the mitochondria of the cell. there are three isoforms of CPT I enzyme, CPT1A, CPT1B, and CPT1C.

Interpretation Introduction

(c)

Interpretation:

The enzyme that is more sensitive to malonyl CoA inhibition must be determined.

Concept introductionCarnitine palmitoyl transferase I is a mitochondrial enzyme, which forms acyl carnitine by catalyzing the reaction between acyl CoA, and l-carnitine. This allows the transfer of fatty acid chain from cytosol to the mitochondria of the cell. there are three isoforms of CPT I enzyme, CPT1A, CPT1B, and CPT1C.

Interpretation Introduction

(d)

Interpretation:

Effect of 100 µM palmitoyl CoA, 100 µM carnitine, and malonyl CoA 10µM on mutant enzyme and wild type enzyme must be determined.

Concept introduction:

Carnitine palmitoyl transferase I is a mitochondrial enzyme, which forms acyl carnitine by catalyzing the reaction between acyl CoA, and l-carnitine. This allows the transfer of fatty acid chain from cytosol to the mitochondria of the cell. there are three isoforms of CPT I enzyme, CPT1A, CPT1B, and CPT1C.

Interpretation Introduction

(e)

Interpretation:

Role of glutamate 3 in CPTI function should be determined.

Concept introduction:

Carnitine palmitoyl transferase I is a mitochondrial enzyme, which forms acyl carnitine by catalyzing the reaction between acyl CoA, and l-carnitine. This allows the transfer of fatty acid chain from cytosol to the mitochondria of the cell. there are three isoforms of CPT I enzyme, CPT1A, CPT1B, and CPT1C.

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