Aharon Katzir memorial volume

1 Fluidity and Phase Transitions of Cell Membranes.- I. Introduction.- II. Phase Transitions and Fluidity of Lipid and Membrane Systems.- III. Triggering Mechanisms.- IV. Conclusions.- References.- 2 Criteria in Carrier Transport.- I. Introduction.- II. Criteria for Diffusion.- A. Fick's Diffusion Law.- B. The Flux Ratio.- III. Carrier-Mediated Transport.- A. Low Saturation.- B. General Case. Flux Ratio.- C. High Saturation.- D. Counter Transport.- E. Other "Exchange" Phenomena.- F. Comparative Considerations.- IV. Active Transport.- A. Uphill Operation.- B. Dependence on Metabolism.- C. Short Circuit Current.- D. Asymmetric Michaelis Constants.- E. The Flux Ratio Criterion of Ussing.- V. Conclusion.- References.- 3 Carotenoid and Merocyanine Probes in Chromatophore Membranes.- I. Introduction.- II. Materials and Methods.- A. Experimental Methods.- B. Preparations.- C. Merocyanine Probes.- D. Binding Determinations.- E. Energy Transfer between Chlorophyll, Carotenoid, and Merocyanine Probes.- III. Experimental Results.- A. Responses to Steady State Illumination.- B. Kinetic Responses.- IV. Discussion.- A. Location of the Probes.- B. Energy Transfer between Chlorophyll, Carotenoid, and Merocyanine Probes.- C. Response of Merocyanine to Valinomycin-Stimulated K+ Diffusion.- D. Responses to Flash Illumination of Chlorophyll, Carotenoid, and Merocyanine.- E. Electrochromic Responses.- References.- 4 Effects of Sulfhydryl Reagents on Basal and Vasopressin-Stimulated Na+ Transport in the Toad Bladder.- I. Introduction.- II. Materials.- III. Methods.- A. Short-Circuit Current Experiments.- B. Assay of Soluble SH Compounds.- C. Effects of Amiloride on Titratable SH Groups.- D. Effects of Vasopressin on Titratable SH Groups.- IV. Results.- A. Penetration of SH Reagents into Toad Bladder Epithelium.- B. Effects of SH Reagents on SCC.- C. Effects of Amiloride on Titratable SH Groups.- D. Effects of Vasopressin on Titratable SH Groups.- V. Discussion.- VI. Summary.- References.- 5 Biogenesis of Chloroplast Membranes in Chlamydomonas Reinhardi: Chloroplast-Controlled Transfer of Cytoplasmic Proteins As Visualized by Quantitative Radioautography.- I. Introduction.- II. Materials and Methods.- A. Radioactive Labeling and Autoradiography.- B. Chemical Determinations.- III. Results.- IV. Discussion.- V. Summary.- References.- 6 Nerve Excitability-Toward an Integrating Concept.- I. Integral Physicochemical Mode for Nerve Excitation.- A. Introduction.- B. Stationary Membrane Potentials.- C. Transient Changes of Membrane Properties.- D. The Cholinergic System and Excitability.- E. The Integral Model.- II. Biochemical Foundation of the Integral Model.- A. Cell Membranes.- B. Chemical Hypothesis of Excitability.- C. Macromolecular Conformation and Ca2+ Ions.- III. Synaptic Transmission.- A. Problem of the Role of AcCh at Junctions.- B. Early Observations That Suggested a Special Function of AcCh at Synaptic Junctions.- C. Evidence Supporting a Similar Role of AcCh Cycle in Pre- and Postsynaptic Junctional Membranes.- D. Alternative Interpretation of the Function of AcCh at Junctions.- IV. Concluding Remarks.- V. Summary.- References.- 7 Peptide Transport.- I. Introduction.- II. Methods of Studying Peptide Transport.- A. Direct Methods.- B. Indirect Methods.- III. Peptide Transport and Peptidases.- A. Bacteria.- B. Yeast.- C. Mammals.- D. Conclusions.- IV. The Properties of Peptide Transport Systems.- A. Bacteria.- B. Yeast.- C. Mammals.- D. Summary.- References.- 8 Factors Influencing the Retention of K in a Halobacterium.- I. Outside KCl Concentration.- A. Introduction.- B. Materials and Methods.- C. Results.- D. Discussion.- E. Summary.- II. pH and Nature and Concentration of Salt in Outside Medium.- A. Introduction.- B. Materials and Methods.- C. Results.- D. Discussion.- E Summary.- References.