Table of Contents

Biological Sciences: Botany

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Biological Sciences: Botany:
- Verne Grant
- and Karen A. Grant
Natural Hybridization between the Cholla Cactus Species Opuntia spinosior and Opuntia versicolor
PNAS 1971 68:1993-1995
- Abstract
- Full Text (PDF)

Biological Sciences: Microbiology

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Biological Sciences: Microbiology:
- H. B. Maruyama,
- M. Hatanaka,
- and R. V. Gilden
The 3′-Terminal Nucleosides of the High Molecular Weight RNA of C-Type Viruses
PNAS 1971 68:1999-2001
- Abstract
- Full Text (PDF)
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Biological Sciences: Microbiology:
- R. A. Parejko
- and P. W. Wilson
Kinetic Studies on Klebsiella pneumoniae Nitrogenase
PNAS 1971 68:2016-2018
- Abstract
- Full Text (PDF)
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Biological Sciences: Microbiology:
- T. Miyake,
- I. Haruna,
- T. Shiba,
- Y. H. Itoh,
- K. Yamane,
- and I. Watanabe
Grouping of RNA Phages Based on the Template Specificity of Their RNA Replicases
PNAS 1971 68:2022-2024
- Abstract
- Full Text (PDF)
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Biological Sciences: Microbiology:
- N. C. Goodman
- and S. Spiegelman
Distinguishing Reverse Transcriptase of an RNA Tumor Virus from Other Known DNA Polymerases
PNAS 1971 68:2203-2206
- Abstract
- Full Text (PDF)

Physical Sciences: Physics

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Physical Sciences: Physics:
- Keith W. Reiss
- and Walter Gordy
Electron Spin Resonance of an Irradiated Single Crystal of 5-Chlorouridine
PNAS 1971 68:2008-2010
- Abstract
- Full Text (PDF)
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Physical Sciences: Physics:
- Douglas Henderson
Tunnel Model for Hard-Sphere Bosons in Their Ground State
PNAS 1971 68:2011
- Abstract
- Full Text (PDF)

Biological Sciences: Genetics

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Biological Sciences: Genetics:
- M. D. De La Guardia,
- C. M. G. Aragón,
- F. J. Murillo,
- and E. Cerdá-Olmedo
A Carotenogenic Enzyme Aggregate in Phycomyces: Evidence from Quantitive Complementation
PNAS 1971 68:2012-2015
- Abstract
- Full Text (PDF)
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Biological Sciences: Genetics:
- Hubert Condamine,
- R. Philip Custer,
- and Beatrice Mintz
Pure-Strain and Genetically Mosaic Liver Tumors Histochemically Identified with the β-Glucuronidase Marker in Allophenic Mice
PNAS 1971 68:2032-2036
- Abstract
- Full Text (PDF)
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Biological Sciences: Genetics:
- D. Korn
- and M. Thomas
Control of Plasmid Replication in Escherichia coli: Correlation of the Membrane Site of DNA Replication with the Bacterial Segregation Unit
PNAS 1971 68:2047-2051
- Abstract
- Full Text (PDF)
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Biological Sciences: Genetics:
- Maximo E. Drets
- and Margery W. Shaw
Specific Banding Patterns of Human Chromosomes
PNAS 1971 68:2073-2077
- Abstract
- Full Text (PDF)
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Biological Sciences: Genetics:
- Ronald J. Konopka
- and Seymour Benzer
Clock Mutants of Drosophila melanogaster
PNAS 1971 68:2112-2116
- Abstract
- Full Text (PDF)
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Biological Sciences: Genetics:
- D. L. Williamson,
- Lee Ehrman,
- and R. P. Kernaghan
Induction of Sterility in Drosophila paulistorum: Effect of Cytoplasmic Factors
PNAS 1971 68:2158-2160
- Abstract
- Full Text (PDF)
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Biological Sciences: Genetics:
- Arthur P. Bollon
- and P. T. Magee
Involvement of Threonine Deaminase in Multivalent Repression of the Isoleucine-Valine Pathway in Saccharomyces cerevisiae
PNAS 1971 68:2169-2172
- Abstract
- Full Text (PDF)
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Biological Sciences: Genetics:
- L.-N. Chan
- and W. Gehring
Determination of Blastoderm Cells in Drosophila melanogaster
PNAS 1971 68:2217-2221
- Abstract
- Full Text (PDF)
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Biological Sciences: Genetics:
- A. Garcia-Bellido
- and J. R. Merriam
Genetic Analysis of Cell Heredity in Imaginal Discs of Drosophila melanogaster
PNAS 1971 68:2222-2226
- Abstract
- Full Text (PDF)

Biological Sciences: Immunology

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Biological Sciences: Immunology:
- J. Michael Kehoe
- and J. Donald Capra
Localization of Two Additional Hypervariable Regions in Immunoglobulin Heavy Chains
PNAS 1971 68:2019-2021
- Abstract
- Full Text (PDF)
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Biological Sciences: Immunology:
- Yong Sung Choi
- and Robert A. Good
New Immunoglobulin-like Molecules in the Serum of Bursectomized-Irradiated Chickens
PNAS 1971 68:2083-2086
- Abstract
- Full Text (PDF)
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Biological Sciences: Immunology:
- Jack F. Woodruff
- and Judith J. Woodruff
Modification of Severe Coxsackievirus B₃ Infection in Marasmic Mice by Transfer of Immune Lymphoid Cells
PNAS 1971 68:2108-2111
- Abstract
- Full Text (PDF)

Physical Sciences: Mathematics

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Physical Sciences: Mathematics:
- J. A. Donaldson
New Integral Representations for Solutions of Cauchy's Problem for Abstract Parabolic Equations
PNAS 1971 68:2025-2027
- Abstract
- Full Text (PDF)

Physical Sciences: Chemistry

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Physical Sciences: Chemistry:
- Henry F. Epstein,
- Alan N. Schechter,
- and Jack S. Cohen
Folding of Staphylococcal Nuclease: Magnetic Resonance and Fluorescence Studies of Individual Residues
PNAS 1971 68:2042-2046
- Abstract
- Full Text (PDF)
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Physical Sciences: Chemistry:
- Charles R. Cantor
- and Philip Pechukas
Determination of Distance Distribution Functions by Singlet-Singlet Energy Transfer
PNAS 1971 68:2099-2101
- Abstract
- Full Text (PDF)
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Physical Sciences: Chemistry:
- S. H. Lin,
- L. J. Colangelo,
- and H. Erying
Theoretical Analysis of Emission Spectra of Electronic Transitions of Molecules in Dense Media
PNAS 1971 68:2135-2140
- Abstract
- Full Text (PDF)
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Physical Sciences: Chemistry:
- Hans Brockmann, Jr.,
- Gerrit Knobloch,
- Hans Plieninger,
- K. Ehl,
- J. Ruppert,
- Albert Moscowitz,
- and C. J. Watson
The Absolute Configuration of Natural (-)-Stercobilin and Other Urobilinoid Compounds
PNAS 1971 68:2141-2144
- Abstract
- Full Text (PDF)
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Physical Sciences: Chemistry:
- R. Zand,
- B. B. L. Agrawal,
- and I. J. Goldstein
pH-Dependent Conformational Changes of Concanavalin A
PNAS 1971 68:2173-2176
- Abstract
- Full Text (PDF)
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Physical Sciences: Chemistry:
- Peter N. Lewis,
- Frank A. Momany,
- and Harold A. Scheraga
Folding of Polypeptide Chains in Proteins: A Proposed Mechanism for Folding
PNAS 1971 68:2293-2297
- Abstract
- Full Text (PDF)
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Physical Sciences: Chemistry:
- Andre S. Meyer,
- Edith Hanzmann,
- and Robert C. Murphy
Absolute Configuration of Cecropia Juvenile Hormone
PNAS 1971 68:2312-2315
- Abstract
- Full Text (PDF)

Biological Sciences: Cell Biology

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Biological Sciences: Cell Biology:
- Maurice H. Vaughan, Jr.,
- Philip J. Pawlowski,
- and J. Forchhammer
Regulation of Protein Synthesis Initiation in HeLa Cells Deprived of Single Essential Amino Acids
PNAS 1971 68:2057-2061
- Abstract

Natural Hybridization between the Cholla Cactus Species Opuntia spinosior and Opuntia versicolor

Kinetics of Sodium Dodecyl Sulfate Solubilization of Mycoplasma laidlawii Plasma Membranes

Mercurated Dextran Column Chromatography for Fractionating Mononucleotides

Autoinhibition of Acetylcholine Binding to Torpedo Electroplax; A Possible Molecular Mechanism for Desensitization

Heterogeneity of Tubulin Subunits

The Detection of Ionophorous Antibiotic-Cation Complexes in Water with Fluorescent Probes

The Control of Morphogenesis: An Enzymatic Mechanism for the Initiation of Septum Formation in Yeast

Mechanism of the Enhancement of the Bohr Effect in Mammalian Hemoglobins by Diphosphoglycerate

Pantetheine-Linked Peptide Intermediates in Gramicidin S and Tyrocidine Biosynthesis

Preparation of a “Chemical Vaccine” Against Tumor Progression

Dihydropteridine Reductase: Implication on the Regulation of Catecholamine Biosynthesis

Decrease in Liver Aromatic L-Amino-Acid Decarboxylase Produced by Chronic Administration of L-Dopa

Toluene-Treated Escherichia coli Replicate Only That DNA Which Was About To Be Replicated In Vivo

Conditions Leading to Enhanced Response to Glucagon, Epinephrine, or Prostaglandins by Adenylate Cyclase of Normal and Malignant Cultured Cells

Regulation by Calcium of In Vivo Synthesis of 1,25-Dihydroxycholecalciferol and 21,25-Dihydroxycholecalciferol

Purification of the araC Protein

Effect of Catecholamines on the Adenosine 3′:5′-Cyclic Monophosphate Concentrations of Clonal Satellite Cells of Neurons

Cortisone Stimulation of Nucleolar RNA Polymerase Activity

A Soluble Mitochondrial ATP Synthetase Complex Catalyzing ATP-Phosphate and ATP-ADP Exchange

Control of λ Repressor Synthesis

Establishment and Maintenance of Repression by Bacteriophage Lambda: The Role of the cI, cII, and cIII Proteins

DNA-Directed Cell-Free Synthesis of Biologically Active Transfer RNA: su+III Tyrosyl-tRNA

Inhibition of the DNA Polymerase of Rauscher Leukemia Virus by Single-Stranded Polyribonucleotides

Nucleic Acid Polymerases of the Developing Chicken Embryo: A DNA Polymerase Preferring a Hybrid Template

Transcription of the Polyoma Virus Genome: Synthesis and Cleavage of Giant Late Polyoma-Specific RNA

Control by Cesium and Intermediates of the Citric Acid Cycle of Extracellular Ribonuclease and Other Enzymes Involved in the Assimilation of Nitrogen

Requirement for GTP in the Initiation Process on Reticulocyte Ribosomes and Ribosomal Subunits

A Novel Closed-Circular Mitochondrial DNA with Properties of a Replicating Intermediate

Adenosine 3′:5′-Cyclic Monophosphate Concentration in the Bacterial Host Regulates the Viral Decision between Lysogeny and Lysis

Alteration of a 30S Ribosomal Protein Accompanying the ram Mutation in Escherichia coli

Purification and In Vitro Transcription of a Transfer RNA Gene

Comparison of the Microtubule Proteins of Neuroblastoma Cells, Brain, and Chlamydomonas Flagella

The Isolation and Characterization of a Photochemically Active Complex from Chloropseudomonas ethylica

Sequence Differences of Escherichia coli 30S Ribosomal Proteins as Determined by Immunochemical Methods

Synthesis and Degradation of Liver Acetyl Coenzyme A Carboxylase in Genetically Obese Mice

Nucleoside Diphosphokinase Activity Associated with DNA Polymerases

Protein Synthesis Directed by Encephalomyocarditis Virus RNA: Properties of a Transfer RNA-Dependent System

The 3′-Terminal Nucleosides of the High Molecular Weight RNA of C-Type Viruses

Kinetic Studies on Klebsiella pneumoniae Nitrogenase

Grouping of RNA Phages Based on the Template Specificity of Their RNA Replicases

Distinguishing Reverse Transcriptase of an RNA Tumor Virus from Other Known DNA Polymerases

Electron Spin Resonance of an Irradiated Single Crystal of 5-Chlorouridine

Tunnel Model for Hard-Sphere Bosons in Their Ground State

A Carotenogenic Enzyme Aggregate in Phycomyces: Evidence from Quantitive Complementation

Pure-Strain and Genetically Mosaic Liver Tumors Histochemically Identified with the β-Glucuronidase Marker in Allophenic Mice

Control of Plasmid Replication in Escherichia coli: Correlation of the Membrane Site of DNA Replication with the Bacterial Segregation Unit

Specific Banding Patterns of Human Chromosomes

Clock Mutants of Drosophila melanogaster

Induction of Sterility in Drosophila paulistorum: Effect of Cytoplasmic Factors

Involvement of Threonine Deaminase in Multivalent Repression of the Isoleucine-Valine Pathway in Saccharomyces cerevisiae

Determination of Blastoderm Cells in Drosophila melanogaster

Genetic Analysis of Cell Heredity in Imaginal Discs of Drosophila melanogaster

Localization of Two Additional Hypervariable Regions in Immunoglobulin Heavy Chains

New Immunoglobulin-like Molecules in the Serum of Bursectomized-Irradiated Chickens

Modification of Severe Coxsackievirus B3 Infection in Marasmic Mice by Transfer of Immune Lymphoid Cells

New Integral Representations for Solutions of Cauchy's Problem for Abstract Parabolic Equations

Folding of Staphylococcal Nuclease: Magnetic Resonance and Fluorescence Studies of Individual Residues

Determination of Distance Distribution Functions by Singlet-Singlet Energy Transfer

Theoretical Analysis of Emission Spectra of Electronic Transitions of Molecules in Dense Media

The Absolute Configuration of Natural (-)-Stercobilin and Other Urobilinoid Compounds

pH-Dependent Conformational Changes of Concanavalin A

Folding of Polypeptide Chains in Proteins: A Proposed Mechanism for Folding

Absolute Configuration of Cecropia Juvenile Hormone

Regulation of Protein Synthesis Initiation in HeLa Cells Deprived of Single Essential Amino Acids

DNA-Directed Cell-Free Synthesis of Biologically Active Transfer RNA: su⁺_III Tyrosyl-tRNA

Modification of Severe Coxsackievirus B₃ Infection in Marasmic Mice by Transfer of Immune Lymphoid Cells