Chromatin Structure and Function

of Part A.- Section I: What is the Chromatin?.- Properties and Composition of Isolated Chromatin.- Expressed and Nonexpressed Portions of the Genome: Their Separation and Their Characterization.- Discussion.- Section II: Physical, Chemical and Biological Techniques for Studying Nucleosome, Chromatin, Chromosome and Nuclei.- Electron Microscopy: A Tool for Visualizing Chromatin.- Transcriptional Control of Native Chromatin.- Circular Dichroism of DNA, Protein and Chromatin.- Important Hydrodynamic and Spectroscopic Techniques in the Field of Chromatin Structure.- Preparation and Analysis of Core Particles and Nucleosomes: A Conveinient Method For Studying the Protein Composition of Nucleosomes Using Protamine-Release into Triton-Acid-Urea Gels.- The Interaction of Histones with DNA: Equilibrium Binding Studies.- Nucleosome Shape and Structure in Solution from Flow Birefringence.- Scattering and Diffraction by Neutrons and X-rays in the Study of Chromatin.- Nuclear Magnetic Resonance Studies of Nucleic Acids and Proteins.- Techniques for Cytochemical Studies of the Nucleus and its Substructures.- Chromatin Study in Situ: I. Image Analysis.- Chromatin Study in Situ: II. Static and Flow Microfluorimetry.- Chromatin Study in Situ: III. Differential Effects of Feulgen Hydrolysis.- Scanning and Flow Photometry of Chromosomes.- Discussion.- Section III: Various Levels of Chromatin Organization and Mechanisms for Transcriptional Control.- Histones Assembly and Their Structural Role for Nucleosome Core.- Nuclease Digestion and the Structure of Chromatin.- Reconstitution of Nucleosomes.- Conformation of Polynucleosomes in Low Ionic Strength Solution.- Chromatin Structure: Relation of Nucleosomes of DNA Sequences.- Histone Complexes, Nucleosomes, Chromatin and Cell-Cycle Dependent Modification of Histones.- Evidence for Superstructures of Wet Chromatin.- Chromatin Fractionation and the Properties of Transcriptionally Active Regions of Chromatin.- Chromatin Reconstitution and Non-Histone Proteins.- Discussion.- Section IV: Structure-Function of the Genetic Apparatus and Cell Cycle, Aging, Neoplastic Transformation, Differentiation, Chemical Carcinogenesis.- The Structure and Function of Chromatin in Lower Eukaryotes.- Chromatin Structure from Angstrom to Micorn Levels, and Its Relationship to Mammalian Cell Proliferation.- Chromatin Pattern in Situ: Dependence upon Cell Cycle, Preimplantation and Development, and Cellular Aging in Vitro.- Neoplastic Transformation: The Relevance of in Vitro Studies for the Understanding of Tumor Pathenogenesis and Neoplastic Growth.- Cell Differentiation and Malignancy in Leukemia.- Cellular Morphometry in Transformation, Differentiation and Aging.- Basic Mechanisms in Chemical Carcinogenesis.- Carcinogen Induced Alteration in Gene Packing and Its Possible Significance in Carcinogenesis.- Covalent Binding of a Carcinogen to DNA as a Probe of Chromatin Structure.- Carcinogenesis, DNA Repair and Chromatin.- Electromagnetic Induction of Electrochemical Information at Cell Surfaces: Application to Chromatin Structure Modification.- Discussion.- Section V: Review and Summary of the Genetic Apparatus.- Session I: Basic Components of the Genetic Apparatus.- Session II: The Second Level of Organization - Chromatin.- Session III: The Third Level of Organization.- Session IV: Generalized Biological Effects.