Front Cover; Current Topics in Membranes and Transport, Volume 6; Copyright Page; Contents; List of Contributors; Contents of Previous Volumes; Peter Ferguson Curran, 1931-1974; Chapter 1. Role of Cholesterol in Biomembranes and Related Systems; I. Introduction and Scope; II. Distribution of Cholesterol in Biological Systems; III. Solubilisation and Dispersion of Cholesterol; IV. Correlative Relationships of Cholesterol Content; V. State of Cholesterol in Organized Lipid Aggregates; VI. Molecular Aspects of Organization of Cholesterol in Bilayers; References

Chapter 2. Ionic Activities in CellsI. Introduction; II. Definition of "Single Ion Activities"; III. Experiments with Model Polyelectrolyte Systems as Supporting Evidence for the Physical Validity of Single Ion Activity Parameters; IV. Microelectrodes for Measuring Intracellular Ionic Activities; V. Techniques for Measuring Intracellular Ionic Activities; VI. Intracellular Ionic Activities; VII. Conclusion; References; Chapter 3. Active Calcium Transport and Ca2+-Activated ATPase in Human Red Cells; I. Calcium Transport; II. Membrane ATPases Activated by Calcium in Human Red Cells

III. Relationship between Calcium Transport and Calcium + Magnesium-Activated ATPaseIV. Relation between Calcium-Transport-ATPase and Sodium-Potassium Transport-ATPase; V. Comparison with Other Systems Transporting Calcium; VI. Physiological Significance of Calcium Pumps; References; Chapter 4. The Effect of Insulin on Glucose Transport in Muscle Cells; I. Introduction; II. Preparations Used for the Study of Insulin Action on Sugar Transport; III. Cellular Structures Involved in Sugar Transport; IV. The Function of the Glucose Transport System

V. Cellular Signals Controlling Glucose TransportVI. Mechanisms for the Mode of Act.ion of Insulin; References; Chapter 5. Recognition Sites for Material Transport and Information Transfer; I. Introduction. Summary List of Principal Transport Systems for the Amino Acids; II. Description of the Neutral Systems; III. The Cationic Amino Acid Systems; IV. Extension to System ASC of Approaches to Site Description Taught by the Basic Amino Acids; V. Efforts to Develop System-Specific, Nonmetabolizable Substrates for the Neutral Systems

VI. System-Specific Substrates for the Transport System for the Cationic Amino AcidsVII. Stimulation of Release of Pancreatic Hormones by Amino Acids; VIII. Concluding Discussion; References; Subject Index