1 Structures Properties and Possible Biological Functions of Polyadenylic Acid. - 1. Introduction. - 2. Isolation and Detection of Poly(A). - 3. Messenger RNA and the 3?-Terminal Poly(A) Sequence. - 4. Possible Biological Functions of Poly(A). - 5. Structure of Poly(A). - 6. Interaction of Poly(A) with Monomers and Polymers. - 7. Conclusions. - 8. References. - 2 Computer Simulation of Density-Gradient Centrifugation. - 1. Introduction. - 2. Some Aspects of the Basic Theory of Gradient Centrifugation. - 3. The Indirect Approach to Simulation of Gradient Centrifugation. - 4. The Compartmental Approach to Simulation of Gradient Centrifugation. - 5. The Analytical Approach to Simulation of Gradient Centrifugation. - 6. General Discussion. - 7. References. - 3 Crown-Gall and Agrobacterium tumefaciens: Survey of a Plant-Cell-Transformation System of Interest to Medicine and Agriculture. - 1. Introduction. - 2. Overview of the Process of Plant-Cell Transformation by Agrobacterium tumefaciens. - 3. Conditions for Plant-Cell Transformation by Agrobacterium tumefaciens. - 4. Properties and Products of Agrobacterium tumefaciens. - 5. Molecular Components Genetic Systems and Search for the Tumor-Inducing Principle (TIP) of Agrobacterium tumefaciens. - 6. Attempts to Define the Crown-Gall Tumor Cell. - 7. On the Genetic Basis of the Formation of the Crown-Gall Tumor Cell. - 8. Medical and Agricultural Interest in Crown-Gall/ Agrobacterium Research. - 9. References. - 4 The Petite Mutation in Yeast. - 1. Discovery and Initial Characterization. - 2. Cytology and Ultrastructure of Petite Mutants. - 3. Mitochondrial DNA in Petite Mutants. - 4. Mitochondrial RNA in Petite Mutants. - 5. Mitochondrial Proteins in Petite Mutants. - 6. Induction of the Petite Mutation. - 7. Petite Mutants and Mitochondrial Genetics. -8. Petite-Negative Yeasts. - 9. The Petite Mutation: A Broader View. - 10. Appendix: Abbreviations and Terms. - 11. References. - 5 The Role of Lipids in the Structure and Function of Membranes. - 1. Introduction. - 2. Properties of the Lipid Bilayer. - 3. Lipid-Protein Interactions and Lipid Organization in Membranes. - 4. Effects of Lipids and Their Physical State on the Properties of Biomembranes. - 5. Roles of Lipids in Membrane Functions. - 6. Summary. - 7. References. - 6 Dehydrogenases of the Plasma Membrane. - 1. Introduction. - 2. Extrinsic Dehydrogenases. - 3. Intrinsic Dehydrogenases. - 4. Relationship of Dehydrogenases to Membrane function. - 5. Conclusions. - 6. References. - 7 Transport Processes in Membranes: A Consideration of Membrane Potential across Thick and Thin Membranes. - 1. Introduction. - 2. Biological and Lipid Bilayer Membranes. - 3. Membrane Potential. - 4. Summary. - 5. Appendix: Mathematical and Electrochemical Terms and Symbols. - 6. References. - Some Recent Books in Cell Biochemistry and Biology. - 1. Molecular Biology and Cell Organelles. - 2. Membrane Research. - 3. Plant Biochemistry and Morphology. - 4. Educational Texts. Language: English