Reversible Ligand Binding :Theory and Experiment

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Chapter

1.8 Replacement Reactions: Competitive Ligands

1.9 Heterotropic Linkage: Non-Competitive Binding of Two Ligands

1.10 Allostery and Allosteric Phenomena in Monomeric Proteins

1.11 The Special Case of Cys Ligands (and Similar Reactions)

1.12 Other Special Cases

References

Chapter 2 Ligand-Binding Kinetics for Single-Site Proteins

2.1 Basic Concepts of Chemical Kinetics: Irreversible Reactions

2.2 Reversible Reactions: Equilibrium and Kinetics

2.3 More Complex Kinetic Mechanisms

2.4 Reactions with Molecularity Higher Than Two

2.5 Classical Methods for the Study of Ligand-Binding Kinetics

2.6 Photochemical Kinetic Methods

2.7 The Kinetics of Replacement Reactions

References

Appendix to Chapter 2: Principles of Data Analysis

Chapter 3 Practical Considerations and Commonly Encountered Problems

3.1 Design of the Experiment: The Free Ligand Concentration

3.2 The Signal and the Concentration of the Target

3.3 Test of the Reversibility of the Reaction

3.4 Frequent Abuses of the Concept of X1/2

3.5 Two Common Problems: Protein Precipitation and Baseline Shifts

3.6 Low-Affinity Ligands

3.7 High-Affinity Ligands

3.8 Determination of Binding Stoichiometry

3.9 Ligands Occupying a Thermodynamic Phase Different from the Protein

3.10 Mixtures of Isoforms

3.11 Poor or Absent Signal

References

PART II Ligand Binding to Multiple Binding Site Proteins

Chapter 4 Proteins with Multiple Binding Sites

4.1 Multiple Binding Sites: Determination of the Binding Stoichiometry

4.2 The Binding Polynomial of a Homooligomeric Protein Made Up of Identical Subunits

4.3 Intramolecular Heterogeneity

4.4 Oligomeric Proteins with Interacting Binding Events: Homotropic Linkage

4.5 Cooperativity: Biochemistry and Physiology

4.6 Allostery and Symmetry: The Allosteric Model of Cooperativity

4.7 Two Alternative Concepts of Cooperativity

4.8 Ligand Replacement in Oligomeric Proteins

4.9 Heterotropic Linkage in Multimeric Proteins

4.10 Heterotropic Linkage and the Allosteric Model

References

Appendix 4.1 Statistical Distribution of the Ligand Among the Binding Sites: Statistical Factors

Appendix 4.2 Symmetry of the X̄ Versus Log([X]) Plot: The Concept of Xm

Chapter 5 Ligand-Linked Association and Dissociation

5.1 Quaternary Constraint and Quaternary Enhancement

5.2 The Reversibly Dissociating Homodimer Devoid of Ligand-Linked Association Equilibria

5.3 Ligand-Linked Association-Dissociation in the Non-Cooperative Homodimer

5.4 Oligomers That Dissociate Into Monomers Upon Ligand Binding

5.5 Monomers That Self-Associate to Homodimers Upon Ligation

5.6 Ligand-Linked Association-Dissociation in Cooperative Proteins

5.7 One Ligand Per Dimer: Ligand-Binding Sites at Intersubunit Interfaces

5.8 Ligand-Linked Association-Dissociation in the Framework of the Allosteric Model

5.9 Practical Considerations

References

Chapter 6 Kinetics of Ligand Binding to Proteins with Multiple Binding Sites

6.1 Stepwise Ligand Binding to Homooligomeric Proteins

6.2 Ligand Association to Heterooligomeric Proteins

6.3 Study of the Time Course of Ligand Dissociation

6.4 Practical Problems in the Study of Ligand‐Binding Kinetics with Oligomeric Proteins

6.5 Advanced Techniques for the Study of Ligation Intermediates

6.6 Integration of Equilibrium and Kinetic Data for Cooperative Systems

6.7 Ligand-Binding Kinetics in the Framework of the Allosteric Model

References

Appendix 6.1 Kinetic Statistical Factors

Chapter 7 Hemoglobin and its Ligands

7.1 The Heme and Its Ligands

7.2 Reversible Ligand Binding and Cooperativity

7.3 The Structure of Hemoglobin

7.4 Ligation-Dependent Structural Changes

7.5 Quaternary Constraint

7.6 Structural Aspects of Cooperativity: Allostery

7.7 Structure and Energy Degeneracy

7.8 Kinetics of Ligand Binding

7.9 Ligation Intermediates: Measurement and Structure

7.10 Ligand-Linked Dissociation Into Dimers

7.11 Non-Human Hemoglobins and Human Hemoglobin Mutants

References

PART III Enzymes: A Special Case of Ligand-Binding Proteins

Chapter 8 Single-Substrate Enzymes and their Inhibitors

8.1 Enzymes, Substrates, and Inhibitors: A Special Case of Ligand Binding

8.2 Importance of Initial Velocity Studies: Zero Order Kinetics

8.3 Linearizations of the Michaelis‐Menten Hyperbola

8.4 Enzymatic Catalysis of Reversible Reactions

8.5 The Study of Enzyme Inhibitors Under the Pseudo-Equilibrium Approximation

8.6 Inhibitors that Bind to the Same Site as the Substrate (Pure Competitive Inhibitors)

8.7 Different Types of Heterotropic (Non-Competitive) Inhibitors

8.8 Heterotropic Regulation of Enzyme Activity

References

Chapter 9 Two-Substrate Enzymes and their Inhibitors

9.1 Two Basic Catalytic Mechanisms for Two‐Substrate Enzymes

9.2 Steady-State Parameters of Two-Substrate Enzymes that Do Not Form a Ternary Complex

9.3 Competitive Inhibitors of Two‐Substrate Enzymes That Do Not Form a Ternary Complex

9.4 Steady-State Parameters of Two-Substrate Enzymes Forming a Ternary Complex

9.5 Competitive Inhibitors of Two-Substrate Enzymes Forming a Ternary Complex

References

Chapter 10 Beyond the Steady State: Rapid Kinetic Methods for Studying Enzyme Reactions

10.1 Structural and Catalytic Properties of Copper-Containing Amine Oxidases

10.2 Experimentally Accessible Information on Copper-Amine Oxidases

10.3 From Kinetic Constants to Steady-State Parameters

10.4 The Method of King-Altman to Derive Steady-State Parameters

References

Chapter 11 Slowly Binding and Irreversible Enzyme Inhibitors

11.1 Definitions and Classifications

11.2 Test of Reversibility of Binding

11.3 Slowly Equilibrating Competitive Inhibitors

11.4 Rapidly Binding Irreversible Inhibitors

11.5 Slowly Binding Irreversible Inhibitors

11.6 Mechanism-Based Inhibitors

References

Index

Supplemental Images

EULA

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