This journal provides immediate access to some articles. Volume 68(12); December 1971 Article NATIONAL ACADEMY OF SCIENCES AUTUMN MEETING PMCID: PMC389632 Biological Sciences: Biochemistry Vitamin B6-Responsive Histidine Deficiency in Mutants of Salmonella typhimurium PMCID: PMC389556 Specific Cleavage of Simian Virus 40 DNA by Restriction Endonuclease of Hemophilus Influenzae PMCID: PMC389558 Restrictions of Sequence on the Thickness of Globular Protein Molecules PMCID: PMC389562 Role of 5S RNA in the Functions of 50S Ribosomal Subunits PMCID: PMC389563 ATP-Catalyzed Preconditioning of Phosphofructokinase PMCID: PMC389564 Fractionation of Liver Chromatin PMCID: PMC389565 The Structure of Chromatin PMCID: PMC389566 Modulation of Glutamine Synthetase Adenylylation and Deadenylylation Is Mediated by Metabolic Transformation of the PII-Regulatory Protein PMCID: PMC389567 Slow Joining of Newly Replicated DNA Chains in DNA Polymerase I-Deficient Escherichia coli Mutants PMCID: PMC389568 Transformation of Hamster Cells In Vitro by Polycyclic Hydrocarbons without Cytotoxicity PMCID: PMC389569 New Polarity Suppressors in Escherichia coli: Suppression and Messenger RNA Stability PMCID: PMC389570 In Vitro Excision-Repair of Ultraviolet-Irradiated Transforming DNA from Bacillus subtilis PMCID: PMC389571 Bacterial Mutants in Which the Gene N Function of Bacteriophage Lambda Is Blocked Have an Altered RNA Polymerase PMCID: PMC389573 Enzymatic Conversion of 5-Oxo-L-Proline (L-Pyrrolidone Carboxylate) to L-Glutamate Coupled with Cleavage of Adenosine Triphosphate to Adenosine Diphosphate, a Reaction in the γ-Glutamyl Cycle PMCID: PMC389574 Molecular Structures of DNA-Dependent RNA Polymerases (II) from Calf Thymus and Rat Liver PMCID: PMC389577 Comparative Immunology of Algal Biliproteins PMCID: PMC389579 Ribosome Formation is Blocked by Camptothecin, a Reversible Inhibitor of RNA Synthesis PMCID: PMC389580 Size Changes in Eukaryotic Ribosomes PMCID: PMC389582 Reconstitution of Horse Heart Cytochrome c: Interaction of the Components Obtained upon Cleavage of the Peptide Bond following Methionine Residue 65 PMCID: PMC389585 Regulation of the Nucleolar DNA-Dependent RNA Polymerase by Amino Acids in Ehrlich Ascites Tumor Cells PMCID: PMC389586 Structure of the Replicating DNA from Bacteriophage T4 PMCID: PMC389588 Procollagen Peptidase: An Enzyme Excising the Coordination Peptides of Procollagen PMCID: PMC389589 A Supernatant Factor Involved in Initiation Complex Formation with Eukaryotic Ribosomes PMCID: PMC389590 Three Forms of Cytochrome b559 and Their Relation to the Photosynthetic Activity of Chloroplasts PMCID: PMC389591 Virus-Specific Proteins Synthesized in Encephalomyocarditis Virus-Infected HeLa Cells PMCID: PMC389595 DNA Polymerases of Tumor Virus: Specific Effect of Ethidium Bromide on the Use of Different Synthetic Templates PMCID: PMC389602 A Complex Between Initiation Factor IF2, Guanosine Triphosphate, and fMet-tRNAf: An Intermediate in Initiation Complex Formation PMCID: PMC389604 Analysis of DNA Polymerases II and III in Mutants of Escherichia coli Thermosensitive for DNA Synthesis PMCID: PMC389610 Hydrolysis of fMet-tRNA by Peptidyl Transferase PMCID: PMC389613 Chemical Events in Conducting and Synaptic Membrances during Electrical Activity PMCID: PMC389615 The Molecular Organization of Lipids in the Membrane of Escherichia coli: Phase Transitions PMCID: PMC389617 A Structure of Pyridine Nucleotides in Solution PMCID: PMC389621 Inhibition of Replication in Functional Mouse Adrenal Tumor Cells by Adrenocorticotropic Hormone Mediated by Adenosine 3′:5′-Cyclic Monophosphate PMCID: PMC389622 Purification and Base Composition Analysis of Phage Lambda Early Promoters PMCID: PMC389623 Mechanism of Action of Bacitracin: Complexation with Metal Ion and C55-Isoprenyl Pyrophosphate PMCID: PMC389626 Base Composition Differences between Avian Myeloblastosis Virus Transfer RNA and Transfer RNA Isolated from Host Cells PMCID: PMC389628 In Vitro Formation of Assimilatory Reduced Nicotinamide Adenine Dinucleotide Phosphate: Nitrate Reductase from a Neurospora Mutant and a Component of Molybdenum-Enzymes PMCID: PMC389631 Biological Sciences: Cell Biology On the Similarity Between the tRNAs of Organelles and Prokaryotes PMCID: PMC389572 Adenosine Triphosphate-Induced Sliding of Tubules in Trypsin-Treated Flagella of Sea-Urchin Sperm PMCID: PMC389597 Stimulation of Glucose Transport in Cultures of Density-Inhibited Chick Embryo Cells PMCID: PMC389611 Synaptogenesis in Reaggregating Brain Cell Culture PMCID: PMC389625 Biological Sciences: Genetics Cattanach's Translocation: Cytological Characterization by Quinacrine Mustard Staining PMCID: PMC389559 Expression of Differentiated Functions in Hepatoma Cell Hybrids: Reappearance of Tyrosine Aminotransferase Inducibility after the Loss of Chromosomes PMCID: PMC389583 Karyological Properties of Human-Mouse Somatic Hybrids PMCID: PMC389598 Genetics of Somatic Mammalian Cells: Lethal Antigens as Genetic Markers for Study of Human Linkage Groups PMCID: PMC389599 An Escherichia coli Mutant with Increased Messenger Ribonuclease Activity PMCID: PMC389608 Is Drosophila dAT on the Y Chromosome? PMCID: PMC389609 Localized Mutagenesis of Any Specific Small Region of the Bacterial Chromosome PMCID: PMC389612 The Population Variance of the Proportion of Genetic Admixture in Human Intergroup Hybrids PMCID: PMC389614 Purification and Some Characteristics of 5S DNA from Xenopus laevis PMCID: PMC389616 Host-Gene Control of C-Type RNA Tumor Virus: Inheritance of the Group-Specific Antigen of Murine Leukemia Virus PMCID: PMC389619 Mutagenicity to Mammalian Cells of Epoxides and Other Derivatives of Polycyclic Hydrocarbons PMCID: PMC389620 Detection of Human and Chick Nuclear Antigens in Nuclei of Chick Erythrocytes during Reactivation in Heterokaryons with HeLa Cells PMCID: PMC389627 Biological Sciences: Immunology Immunoglobulin G and Free Kappa-Chain Synthesis in Different Clones of a Hybrid Cell Line PMCID: PMC389587 Inhibition or Enhancement of Immunological Injury of Virus-Infected Cells PMCID: PMC389593 Immunologic Enhancement of Allogeneic Tumor Growth with Soluble Histocompatibility-2 Antigens PMCID: PMC389594 Autoimmune-Like Antibodies to the Ligand-Binding Sites of Myeloma Proteins PMCID: PMC389606 Reaction of Anti-idiotypic Antibody with the Hapten-Binding Site of a Myeloma Protein PMCID: PMC389607 Biological Sciences: Medical Sciences Parathyroid Hormone: Secretion and Metabolism In Vivo PMCID: PMC389575 Three Closely Linked Genetic Systems Relevant to Transplantation PMCID: PMC389584 Biological Sciences: Microbiology Chemical Induction of Focus-Forming Virus from Nonproducer Cells Transformed by Murine Sarcoma Virus PMCID: PMC389592 Persistence of a Repressed Epstein-Barr Virus Genome in Burkitt Lymphoma Cells Made Resistant to 5-Bromodeoxyuridine PMCID: PMC389618 Biological Sciences: Physiology The Cochlea of the Dolphin, Tursiops truncatus: Hair Cells and Ganglion Cells PMCID: PMC389557 Gap Junctions between Electrotonically Coupled Cells in Tissue Culture and in Brown Fat PMCID: PMC389561 On the — 1.9 Volt (Alternating Current) Polarographic Signal of Tissues PMCID: PMC389576 Melatonin Metabolism: Neural Regulation of Pineal Serotonin: Acetyl Coenzyme A N-Acetyltransferase Activity PMCID: PMC389600 Biological Sciences: Zoology The Cortex of Xenopus laevis Embryos: Regional Differences in Composition and Biological Activity PMCID: PMC389560 Albumin Evolution in Frogs: A Test of the Evolutionary Clock Hypothesis PMCID: PMC389605 Physical Sciences: Chemistry Tetrahedral Iron in the Active Center of Plant Ferredoxins and Beef Adrenodoxin PMCID: PMC389581 Nuclear Magnetic Resonance Studies of Lysine-Vasopressin: Structural Constraints PMCID: PMC389596 Evidence for Hydrogen Abstraction by Classical Radicals in the Norbornenyl-Nortricyclyl System PMCID: PMC389624 Pyrolysis of Organomercury Compounds: Investigation by the Method of Matrix Isolation PMCID: PMC389629 Physical Sciences: Physics Visualization of Single Heavy Atoms by Dark Field Electron Microscopy PMCID: PMC389578 A Note on the Ground State Energy of an Assembly of Interacting Electrons PMCID: PMC389601 Van der Waals Interactions and Exciton Condensation PMCID: PMC389603 Correction Collagen biosynthesis: synthesis and secretion of a high molecular weight collagen precursor PMCID: PMC389630 Corrects: Collagen Biosynthesis: Synthesis and Secretion of a High Molecular Weight Collagen Precursor (Procollagen). Proc Natl Acad Sci U S A. 1971 November; 68(11): 2638–2642. Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||