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Volume 68(3);  March 1971
The cover of the journal
Biological Sciences: Biochemistry
Optical Activity of Human Lysozyme
J. P. Halper, N. Latovitzki, H. Bernstein, and S. Beychok
Proc Natl Acad Sci U S A. 1971 March; 68(3): 517–522.
PMCID: PMC388978
Putrescine and Spermidine Biosynthesis in the Development of Normal and Anucleolate Mutants of Xenopus laevis
Diane H. Russell
Proc Natl Acad Sci U S A. 1971 March; 68(3): 523–527.
PMCID: PMC388979
Light-Induced Electron-transfer Reactions between Chlorophyll a and Hydrogenated Pteridine Derivatives in Solution
A. M. Bobst
Proc Natl Acad Sci U S A. 1971 March; 68(3): 541–543.
PMCID: PMC388983
Biochemical Studies on Adenovirus Multiplication, XIX. Resolution of Late Viral RNA Species in the Nucleus and Cytoplasm
J. Thomas Parsons, Jacqueline Gardner, and Maurice Green
Proc Natl Acad Sci U S A. 1971 March; 68(3): 557–560.
PMCID: PMC388987
Adenyl Cyclase as a Link between Photon Capture and Changes in Membrane Permeability of Frog Photoreceptors
Mark W. Bitensky, Ronnie E. Gorman, and William H. Miller
Proc Natl Acad Sci U S A. 1971 March; 68(3): 561–562.
PMCID: PMC388988
Substrate Anchoring and the Catalytic Power of Enzymes
Jacques Reuben
Proc Natl Acad Sci U S A. 1971 March; 68(3): 563–565.
PMCID: PMC388989
Control of Translation by the Conformation of Messenger RNA
Hiroichi Fukami and Kazutomo Imahori
Proc Natl Acad Sci U S A. 1971 March; 68(3): 570–573.
PMCID: PMC388991
The Leader Sequence from the 5′-Terminus to the A-Protein Initiation Codon in MS2-Virus RNA
R. De Wachter, A. Vandenberghe, J. Merregaert, R. Contreras, and W. Fiers
Proc Natl Acad Sci U S A. 1971 March; 68(3): 585–589.
PMCID: PMC388995
The Mechanism of Protein Synthesis Activation After Fertilization of Sea Urchin Eggs
S. Metafora, L. Felicetti, and R. Gambino
Proc Natl Acad Sci U S A. 1971 March; 68(3): 600–604.
PMCID: PMC388998
Inhibition of the Metabolism of 25-Hydroxycholecalciferol by Actinomycin D and Cycloheximide
Y. Tanaka and H. F. Deluca
Proc Natl Acad Sci U S A. 1971 March; 68(3): 605–608.
PMCID: PMC388999
Heme Binding and Transport—A Spectrophotometric Study of Plasma Glycoglobulin Hemochromogens
David L. Drabkin
Proc Natl Acad Sci U S A. 1971 March; 68(3): 609–613.
PMCID: PMC389000
Compounds I of Catalase and Horse Radish Peroxidase: π-Cation Radicals
D. Dolphin, A. Forman, D. C. Borg, J. Fajer, and R. H. Felton
Proc Natl Acad Sci U S A. 1971 March; 68(3): 614–618.
PMCID: PMC389001
Mammalian Peptide Chain Termination, II. Codon Specificity and GTPase Activity of Release Factor
Arthur L. Beaudet and C. T. Caskey
Proc Natl Acad Sci U S A. 1971 March; 68(3): 619–624.
PMCID: PMC389002
Electron Spin Resonance of Chlorophyll and the Origin of Signal I in Photosynthesis
J. R. Norris, R. A. Uphaus, H. L. Crespi, and J. J. Katz
Proc Natl Acad Sci U S A. 1971 March; 68(3): 625–628.
PMCID: PMC389003
The Question of Histidine Content in c-Type Cytochromes
M. A. Cusanovich, T. Meyer, S. M. Tedro, and M. D. Kamen
Proc Natl Acad Sci U S A. 1971 March; 68(3): 629–631.
PMCID: PMC389004
Specific Transformylation of One Methionyl-tRNA from Cotton Seeding Chloroplasts by Endogenous and Escherichia coli Transformylases
William C. Merrick and L. S. Dure III
Proc Natl Acad Sci U S A. 1971 March; 68(3): 641–644.
PMCID: PMC389007
The Carboxyl Transferase Component of Acetyl CoA Carboxylase: Structural Evidence for Intersubunit Translocation of the Biotin Prosthetic Group
Ras B. Guchhait, Joel Moss, Walter Sokolski, and M. Daniel Lane
Proc Natl Acad Sci U S A. 1971 March; 68(3): 653–657.
PMCID: PMC389010
On the Concept of Orbital Steering in Catalytic Reactions
Thomas C. Bruice, Allister Brown, and David O. Harris
Proc Natl Acad Sci U S A. 1971 March; 68(3): 658–661.
PMCID: PMC389011
The Gramicidin A Transmembrane Channel: A Proposed π(L,D) Helix
D. W. Urry
Proc Natl Acad Sci U S A. 1971 March; 68(3): 672–676.
PMCID: PMC389014
Absence of Histones from the Chromosomal Proteins of Fungi
T. J. Leighton, B. C. Dill, J. J. Stock, and Cornell Phillips
Proc Natl Acad Sci U S A. 1971 March; 68(3): 677–680.
PMCID: PMC389015
The Yeast Phenylalanyl-Transfer RNA Synthetase Recognition Site: The Region Adjacent to the Dihydrouridine Loop
B. Dudock, C. DiPeri, K. Scileppi, and R. Reszelbach
Proc Natl Acad Sci U S A. 1971 March; 68(3): 681–684.
PMCID: PMC389016
Direction of Chain Elongation in the Formation of Escherichia coli Ribosomal Protein
Sun Ao Iwata and Hideko Kaji
Proc Natl Acad Sci U S A. 1971 March; 68(3): 690–694.
PMCID: PMC389018
Biological Sciences: Botany
Pathogenicity Resulting from Mutation at the b Locus of Ustilago maydis
P. R. Day, S. L. Anagnostakis, and J. E. Puhalla
Proc Natl Acad Sci U S A. 1971 March; 68(3): 533–535.
PMCID: PMC388981
Isolation of Glucanase-Containing Particles from Budding Saccharomyces cerevisiae
P. Matile, M. Cortat, A. Wiemken, and A. Frey-Wyssling
Proc Natl Acad Sci U S A. 1971 March; 68(3): 636–640.
PMCID: PMC389006
Biological Sciences: Genetics
Cytological and Biochemical Correlation of Late X-Chromosome Replication and Gene Inactivation in the Mule
Maimon M. Cohen and Mario C. Rattazzi
Proc Natl Acad Sci U S A. 1971 March; 68(3): 544–548.
PMCID: PMC388984
Biological Sciences: Immunology
Expression of H-2 and Moloney Leukemia Virus-Determined Cell-Surface Antigens in Synchronized Cultures of a Mouse Cell Line
Matko Cikes and Sten Friberg, Jr.
Proc Natl Acad Sci U S A. 1971 March; 68(3): 566–569.
PMCID: PMC388990
Amino Acid Sequences of Two Mouse Immunoglobulin Lambda Chains
Ettore Appella
Proc Natl Acad Sci U S A. 1971 March; 68(3): 590–594.
PMCID: PMC388996
Biological Sciences: Medical Sciences
Effects of L-Dopa on Norepinephrine Metabolism in the Brain
J. P. Chalmers, R. J. Baldessarini, and R. J. Wurtman
Proc Natl Acad Sci U S A. 1971 March; 68(3): 662–666.
PMCID: PMC389012
Biological Sciences: Microbiology
Use of Monkey-Mouse Hybrid Cells for the Study of the Cellular Regulation of Interferon Production and Action
R. Cassingena, C. Chany, M. Vignal, H. Suarez, S. Estrade, and P. Lazar
Proc Natl Acad Sci U S A. 1971 March; 68(3): 580–584.
PMCID: PMC388994
Serum Factor Requirements of Normal and Simian Virus 40-Transformed 3T3 Mouse Fibroblasts
Dieter Paul, Allan Lipton, and Ingrid Klinger
Proc Natl Acad Sci U S A. 1971 March; 68(3): 645–648.
PMCID: PMC389008
Biological Sciences: Physiology
Kinetics of Insulin Release from the Perfused Rat Pancreas Caused by Glucose, Glucosamine, and Galactose
Rüdiger Landgraf, Janina Kotler-Brajtburg, and Franz M. Matschinsky
Proc Natl Acad Sci U S A. 1971 March; 68(3): 536–540.
PMCID: PMC388982
A Mechanochemical Mechanism for Muscle Contraction
William F. Harrington
Proc Natl Acad Sci U S A. 1971 March; 68(3): 685–689.
PMCID: PMC389017
Biological Sciences: Zoology
Absence of Adaptive Modification in Developing Retinotectal Connections in Frogs after Visual Deprivation or Disparate Stimulation of the Eyes
Marcus Jacobson
Proc Natl Acad Sci U S A. 1971 March; 68(3): 528–532.
PMCID: PMC388980
Hour-Glass Behavior of the Circadian Clock Controlling Eclosion of the Silkmoth Antheraea pernyi
James W. Truman
Proc Natl Acad Sci U S A. 1971 March; 68(3): 595–599.
PMCID: PMC388997
Chromosomal Aberrations and Mortality of X-Irradiated Mammalian Cells: Emphasis on Repair
W. C. Dewey, H. H. Miller, and D. B. Leeper
Proc Natl Acad Sci U S A. 1971 March; 68(3): 667–671.
PMCID: PMC389013
Physical Sciences: Applied Physical Sciences
Evidence of Widespread Effects of Cloud Seeding at Two Arizona Experiments
Jerzy Neyman and Herbert B. Osborn
Proc Natl Acad Sci U S A. 1971 March; 68(3): 649–652.
PMCID: PMC389009
Physical Sciences: Astronomy
Performance of an Automated Computerized Plate Scanner
Willem J. Luyten
Proc Natl Acad Sci U S A. 1971 March; 68(3): 513–516.
PMCID: PMC388977
Physical Sciences: Chemistry
Effect of Pressure on the Electronic Structure of Ferric Hydroxamates and Ferrichrome A
D. C. Grenoble and H. G. Drickamer
Proc Natl Acad Sci U S A. 1971 March; 68(3): 549–553.
PMCID: PMC388985
Photocatalytic Production of Organic Compounds from CO and H2O in a Simulated Martian Atmosphere
Jerry S. Hubbard, James P. Hardy, and N. H. Horowitz
Proc Natl Acad Sci U S A. 1971 March; 68(3): 574–578.
PMCID: PMC388992
Physical Sciences: Mathematics
The Weierstrass-Laguerre Transform
H. M. Srivastava
Proc Natl Acad Sci U S A. 1971 March; 68(3): 554–556.
PMCID: PMC388986
Subordinate Quadratic Forms and Their Complementary Forms
Marston Morse
Proc Natl Acad Sci U S A. 1971 March; 68(3): 579.
PMCID: PMC388993
Physical Sciences: Physics
One- and Two-Fluid van der Waals Theories of Liquid Mixtures, II. 6:12 Molecules
Douglas Henderson and Peter J. Leonard
Proc Natl Acad Sci U S A. 1971 March; 68(3): 632–635.
PMCID: PMC389005
Journal Matter
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