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This journal provides immediate access to some articles. Volume 68(2); February 1971 Biological Sciences: Biochemistry The Comparative Specificity of Acid Proteinases PMCID: PMC388910 Characterization of the Initial Peptide of Qβ RNA Polymerase and Control of Its Synthesis PMCID: PMC388916 Defective Production of Mitochondrial Ribosomes in the Poky Mutant of Neurospora crassa PMCID: PMC388919 Isolation of Saccharomyces cerevisiae Mitochondrial Formyltetrahydrofolic Acid:Methionyl-tRNA Transformylase and the Hybridization of Mitochondrial fMet-tRNA with Mitochondrial DNA PMCID: PMC388921 Promitochondria of Anaerobically Grown Yeast, V. Energy Transfer in the Absence of an Electron Transfer Chain PMCID: PMC388924 Synchronization of Converging Metabolic Pathways: Activation of the Cystathionine γ-Synthase of Neurospora crassa by Methyltetrahydrofolate PMCID: PMC388925 Loss of Feedback Control of Hydroxymethylglutaryl Coenzyme A Reductase in Hepatomas PMCID: PMC388926 Isolation and Properties of Polypeptide Chain Initiation Factor FII from Escherichia coli: Evidence for a Dual Function PMCID: PMC388927 Specific Inhibitors of the Three RNA Polymerases from the Aquatic Fungus Blastocladiella emersonii PMCID: PMC388932 Morphological Transformation of Chinese Hamster Cells by Dibutyryl Adenosine Cyclic 3′:5′-Monophosphate and Testosterone PMCID: PMC388937 Separate Transport Systems for Sugars and Amino Acids in Developing Rat Kidney Cortex PMCID: PMC388940 Association of Chromosomal RNA with Repetitive DNA PMCID: PMC388944 Dissociation of Mammalian Polyribosomes into Subunits by Puromycin PMCID: PMC388945 Rapid and Complete Purification of Acetylcholinesterases of Electric Eel and Erythrocyte by Affinity Chromatography PMCID: PMC388946 Absence of a Natural Inhibitor of the tRNA Methylases from Fetal and Tumor Tissues PMCID: PMC388949 The Acyl Dihydroxyacetone Phosphate Pathway for Glycerolipid Biosynthesis in Mouse Liver and Ehrlich Ascites Tumor Cells PMCID: PMC388950 Photoinactivation of Aldolases by Pyridoxal Phosphate and Its Analogues PMCID: PMC388951 Restoration of Several Morphological Characteristics of Normal Fibroblasts in Sarcoma Cells Treated with Adenosine-3′:5′-Cyclic Monophosphate and Its Derivatives PMCID: PMC388953 Cellular Site of Escherichia coli Ribosomal RNA Synthesis PMCID: PMC388955 Chick Embryo Ribosome Crystals: Analysis of Bonding and Functional Activity In Vitro PMCID: PMC388956 NMR Studies on the Conformation of Derivatives of the Side Chain of Oxytocin: Examples of cis-trans Isomerism PMCID: PMC388958 The Nature of the Collagen Synthesized by Cultured Human Fibroblasts PMCID: PMC388959 Interactions between ADP and the Coupling Factor of Photophosphorylation PMCID: PMC388961 DNA-Dependent RNA Polymerase from Yeast Mitochondria PMCID: PMC388963 Inhibition of Serine Proteases by Arylboronic Acids PMCID: PMC388964 Reinitiation of RNA Synthesis on Transcription of Chromatin DNA by Escherichia coli RNA Polymerase PMCID: PMC388965 Drastic Alteration of Ribosomal RNA and Ribosomal Proteins in Showdomycin-Resistant Escherichia coli PMCID: PMC388967 Puromycin-Peptide Bond Formation with Reticulocyte Initiation Factors M1 and M2 PMCID: PMC388968 Asynchronous Synthesis of the Complementary Strands of the Reovirus Genome PMCID: PMC388970 Biological Sciences: Botany Cyanophycin Granules from the Blue-Green Alga Anabaena cylindrica: A Reserve Material Consisting of Copolymers of Aspartic Acid and Arginine PMCID: PMC388913 Cytokinin and Growth of Excised Roots of Bryophyllum calycinum PMCID: PMC388934 Zoospore Germination in Blastocladiella emersonii: Cell Differentiation without Protein Synthesis? PMCID: PMC388960 Biological Sciences: Genetics Spontaneous Recombination in Drosophila melanogaster Males PMCID: PMC388914 Temperature-Dependent Surface Changes in Cells Infected or Transformed by a Thermosensitive Mutant of Polyoma Virus PMCID: PMC388918 Characterization of Mitochondrial Ribosomes from Yeast PMCID: PMC388928 On Cell Lethals in Drosophila PMCID: PMC388929 DNA-Induced Transformation in Drosophila: Genetic Analysis of Transformed Stocks PMCID: PMC388933 Immunochemical Specificity of Lactate Dehydrogenase-X PMCID: PMC388935 Uptake of Heterologous Genome by Mammalian Spermatozoa and Its Transfer to Ova through Fertilization PMCID: PMC388936 Regulation of Methionine Biosynthesis in Escherichia coli: Mapping of the metJ Locus and Properties of a metJ+/metJ- Diploid PMCID: PMC388939 Biological Sciences: Immunology Membrane-Associated Immunoglobulin of Rabbit Peripheral Blood Lymphocytes: Allelic Exclusion at the b Locus PMCID: PMC388954 Enhanced Immunogenicity of Chemically-Coated Syngeneic Tumor Cells PMCID: PMC388962 Biological Sciences: Medical Sciences Induced Degradation of Glycosaminoglycans in Hurler's and Hunter's Syndromes by Plasma Infusion PMCID: PMC388923 Presynaptic Neuromuscular Inhibition by Porphobilinogen and Porphobilin PMCID: PMC388943 Transformation of Rat and Hamster Embryo Cells by Extracts of City Smog PMCID: PMC388957 Biological Sciences: Microbiology Germination and Growth of Neurospora at Low Water Activities PMCID: PMC388911 Interferon and Transcription of Early Virus-Specific RNA in Cells Infected with Simian Virus 40 PMCID: PMC388922 A Role of Aminoacyl-tRNA in the Regulation of Protein Breakdown in Escherichia coli PMCID: PMC388938 Induction of Staphylococcus aureus Lactose Permease in the Absence of Glycerolipid Synthesis PMCID: PMC388952 Temperature-Sensitive Mutants of Bioluminescent Bacteria PMCID: PMC388969 Biological Sciences: Pathology Hemoglobin Synthesis in Murine Virus-Induced Leukemic Cells In Vitro: Stimulation of Erythroid Differentiation by Dimethyl Sulfoxide PMCID: PMC388942 Biological Sciences: Physiology Calcium as a Regulator of the Proliferation of Normal, but Not of Transformed, Chicken Fibroblasts in a Plasma-Containing Medium PMCID: PMC388915 The Hydration of Sodium Ions Crossing the Nerve Membrane PMCID: PMC388917 Hypothalamic Alpha- and Beta-Adrenergic Systems Regulate Both Thirst and Hunger in the Rat PMCID: PMC388930 Physical Sciences: Applied Mathematics Stochastic Speculative Price PMCID: PMC388931 Physical Sciences: Chemistry Mechanism of Action of Thrombin on Fibrinogen, I. Synthesis of Fibrinogen-like Peptides, and Their Proteolysis by Thrombin and Trypsin PMCID: PMC388909 Synthetic Derivatives of Polyethyleneimine with Enzyme-Like Catalytic Activity (Synzymes) PMCID: PMC388912 Terrestrial and Meteorite Carbon Appear to Have the Same Isotopic Composition PMCID: PMC388941 Calculation of the Reaction Cross Section from a Rate Constant by the Method of Steepest-Descent PMCID: PMC388948 Nonprotein Amino Acids in the Murchison Meteorite PMCID: PMC388966 Physical Sciences: Geophysics Optimal Solutions to a Linear Inverse Problem in Geophysics PMCID: PMC388920 Physical Sciences: Mathematics The Characters of the Symmetric Group PMCID: PMC388947 Corrections The π-cation radical of chlorophyll a PMCID: PMC388971 Corrects: The π-Cation Radical of Chlorophyll a. Proc Natl Acad Sci U S A. 1970 October; 67(2): 813–820. Revised identification of the chromophore of a cell division factor from crown gall tumor cells of Vinca rosea L PMCID: PMC388972 Corrects: Revised Identification of the Chromophore of a Cell Division Factor from Crown Gall Tumor Cells of Vinca rosea L. Proc Natl Acad Sci U S A. 1970 November; 67(3): 1283–1287. Nuclear involvement in poxvirus infection PMCID: PMC388973 Corrects: Nuclear Involvement Poin xvirus Infection. Proc Natl Acad Sci U S A. 1971 January; 68(1): 165–168. Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||
