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Volume 59(2);  February 1968
The cover of the journal
A CHALLENGE TO THE SCIENTIFIC COMMUNITY
Emilio Q. Daddario
Proc Natl Acad Sci U S A. 1968 February; 59(2): 305–312.
PMCID: PMC224669
NUMEROLOGY OF THE CONSTANTS OF NATURE
G. Gamow
Proc Natl Acad Sci U S A. 1968 February; 59(2): 313–318.
PMCID: PMC224670
AN INERATIVE PROCEDURE FOR THE SOLUTION OF PERTURBATION EQUATIONS
Donald K. Harriss and Joseph O. Hirschfelder
Proc Natl Acad Sci U S A. 1968 February; 59(2): 319–325.
PMCID: PMC224671
FUNDAMENTAL EQUATIONS OF ELECTROM AGNETODYNAMICS OF FLUIDS: VARIOUS CONSEQUENCES
John Carstoiu
Proc Natl Acad Sci U S A. 1968 February; 59(2): 326–331.
PMCID: PMC224672
SPIN-COUPLED WAVE FUNCTIONS FOR ATOMS AND MOLECULES
J. Gerratt and W. N. Lipscomb
Proc Natl Acad Sci U S A. 1968 February; 59(2): 332–335.
PMCID: PMC224673
THE SURFACE TENSION OF BINARY LIQUID MIXTURES
Sung Wan Kim, Mu Shik Jhon, Taikyue Ree, and Henry Eyring
Proc Natl Acad Sci U S A. 1968 February; 59(2): 336–342.
PMCID: PMC224674
RETRACTING MULTIFUNCTIONS
Gordon T. Whyburn
Proc Natl Acad Sci U S A. 1968 February; 59(2): 343–348.
PMCID: PMC224675
ERGODIC THEORY AND TRANSLATION-INVARIANT OPERATORS
A. P. Calderón
Proc Natl Acad Sci U S A. 1968 February; 59(2): 349–353.
PMCID: PMC224676
A SQUARE INTEGRABILITY CRITERION FOR THE COHOMOLOGY OF ARITHMETIC GROUPS
H. Garland and W. C. Hsiang
Proc Natl Acad Sci U S A. 1968 February; 59(2): 354–360.
PMCID: PMC224677
ON QUASI-COMPLEMENTED SUBSPACES OF BANACH SPACES
Haskell P. Rosenthal
Proc Natl Acad Sci U S A. 1968 February; 59(2): 361–364.
PMCID: PMC224678
SUBINTEGRALS OF SET-VALUED FUNCTIONS WITH SEMIANALYTIC GRAPHS
Hubert Halkin and Edward C. Hendricks
Proc Natl Acad Sci U S A. 1968 February; 59(2): 365–367.
PMCID: PMC224679
SOME NONLINEAR NETWORKS CAPABLE OF LEARNING A SPATIAL PATTERN OF ARBITRARY COMPLEXITY
Stephen Grossberg
Proc Natl Acad Sci U S A. 1968 February; 59(2): 368–372.
PMCID: PMC224680
ON A NEW COMPUTING TECHNIQUE IN OPTIMAL CONTROL THEORY AND THE MAXIMUM PRINCIPLE
A. V. Balakrishnan
Proc Natl Acad Sci U S A. 1968 February; 59(2): 373–375.
PMCID: PMC224681
A RAPID PHOTOREVERSIBLE RESPONSE OF BARLEY ROOT TIPS IN THE PRESENCE OF 3-INDOLEACETIC ACID
Takuma Tanada
Proc Natl Acad Sci U S A. 1968 February; 59(2): 376–380.
PMCID: PMC224682
Note on convergence of pyramidal and primary afferent impulses in the spinal cord of the cat.
D P Lloyd
Proc Natl Acad Sci U S A. 1968 February; 59(2): 381–384.
PMCID: PMC224683
Separation and description of adenovirus 12-induced cellular antigens which react with hamster tumor antisera.
A C Hollinshead, T C Alford, S Oroszlan, H C Turner, and R J Huebner
Proc Natl Acad Sci U S A. 1968 February; 59(2): 385–392.
PMCID: PMC224684
Immunochemical identification of cytophilic antibody in human lymphocytes.
E Merler and C A Janeway
Proc Natl Acad Sci U S A. 1968 February; 59(2): 393–397.
PMCID: PMC224685
A molecular approach to the study of genic heterozygosity in natural populations. 3. Direct evidence of coadaptation in gene arrangements of Drosophila.
S Prakash and R C Lewontin
Proc Natl Acad Sci U S A. 1968 February; 59(2): 398–405.
PMCID: PMC224686
Base composition and metabolism of various RNA fractions in Acetabularia mediterranea.
E Baltus, J E Edström, J Hanocq-Quertier, R Tencer, and J Brachet
Proc Natl Acad Sci U S A. 1968 February; 59(2): 406–413.
PMCID: PMC224687
Extraretinal light perception in the sparrow. I. Entrainment of the biological clock.
M Menaker
Proc Natl Acad Sci U S A. 1968 February; 59(2): 414–421.
PMCID: PMC224688
Mutants of yeast with temperature-sensitive isoleucyl-tRNA synthetases.
L H Hartwell and C S McLaughlin
Proc Natl Acad Sci U S A. 1968 February; 59(2): 422–428.
PMCID: PMC224689
Genetic heterozygosity in pneumococcal transformation.
F Guerrini and M S Fox
Proc Natl Acad Sci U S A. 1968 February; 59(2): 429–436.
PMCID: PMC224690
Glucose-6-phosphatase deficiency caused by radiation-induced alleles at the albino locus in the mouse.
R P Erickson, S Gluecksohn-Waelsch, and C F Cori
Proc Natl Acad Sci U S A. 1968 February; 59(2): 437–444.
PMCID: PMC224691
Chemical identification of specific immunoglobulins as the product of a cell-free system from plasmocytoma tumors.
B Mach, H Koblet, and D Gros
Proc Natl Acad Sci U S A. 1968 February; 59(2): 445–452.
PMCID: PMC224692
Modification in transfer RNA during the differentiation of wheat seedlings.
B S Vold and P S Sypherd
Proc Natl Acad Sci U S A. 1968 February; 59(2): 453–458.
PMCID: PMC224693
In vitro synthesis of T4 late messenger RNA.
L Snyder and E P Geiduschek
Proc Natl Acad Sci U S A. 1968 February; 59(2): 459–466.
PMCID: PMC224694
A change in the specificity of transfer RNA after partial deamination with nitrous acid.
J Carbon and J B Curry
Proc Natl Acad Sci U S A. 1968 February; 59(2): 467–474.
PMCID: PMC224695
LIGHT-EMITTING MOLECULE IN A NEW PHOTOPROTEIN TYPE OF LUMINESCENCE SYSTEM FROM THE EUPHAUSID SHRIMP Meganyctiphanes norvegica
Osamu Shimomura and Frank H. Johnson
Proc Natl Acad Sci U S A. 1968 February; 59(2): 475–477.
PMCID: PMC224696
The extent of base pairing in 5S ribosomal RNA.
C R Cantor
Proc Natl Acad Sci U S A. 1968 February; 59(2): 478–483.
PMCID: PMC224697
Protonic conductance across phospholipid bilayer membranes induced by uncoupling agents for oxidative phosphorylation.
U Hopfer, A L Lehninger, and T E Thompson
Proc Natl Acad Sci U S A. 1968 February; 59(2): 484–490.
PMCID: PMC224698
The role of alpha-lactalbumin and the A protein in lactose synthetase: a unique mechanism for the control of a biological reaction.
K Brew, T C Vanaman, and R L Hill
Proc Natl Acad Sci U S A. 1968 February; 59(2): 491–497.
PMCID: PMC224699
Metalloenzymes: the entatic nature of their active sites.
B L Vallee and R J Williams
Proc Natl Acad Sci U S A. 1968 February; 59(2): 498–505.
PMCID: PMC224700
Direct participation of a host protein in the replication of viral RNA in vitro.
T S Eikhom, D J Stockley, and S Spiegelman
Proc Natl Acad Sci U S A. 1968 February; 59(2): 506–512.
PMCID: PMC224701
Identification of guanosine triphosphate as the 5'-terminus of RNA from bacteriophage Q-beta and R23.
M Watanabe and J T August
Proc Natl Acad Sci U S A. 1968 February; 59(2): 513–518.
PMCID: PMC224702
The substrate binding site of pepsin.
R E Humphreys and J S Fruton
Proc Natl Acad Sci U S A. 1968 February; 59(2): 519–525.
PMCID: PMC224703
Reciprocal binding of oxygen and diphosphoglycerate by human hemoglobin.
R Benesch, R E Benesch, and C I Yu
Proc Natl Acad Sci U S A. 1968 February; 59(2): 526–532.
PMCID: PMC224704
Identification of the membrane protein and "core" protein of Sindbis virus.
J H Strauss, Jr, B W Burge, E R Pfefferkorn, and J E Darnell, Jr
Proc Natl Acad Sci U S A. 1968 February; 59(2): 533–537.
PMCID: PMC224705
Interrelation of stromal NAD(P)ase and human erythrocytic 6-phosphogluconic dehydrogenase.
F Ajmar, B Scharrer, F Hashimoto, and P E Carson
Proc Natl Acad Sci U S A. 1968 February; 59(2): 538–545.
PMCID: PMC224706
The synthesis and secretion of gamma-globulin by lymph node cells. 3. The slow acquisition of the carbohydrate moiety of gamma-globulin and its relationship to secretion.
R M Swenson and M Kern
Proc Natl Acad Sci U S A. 1968 February; 59(2): 546–553.
PMCID: PMC224707
Requirement of granosine 5'-triphosphate for ribosomal binding of aminoacyl-SRNA.
J Lucas-Lenard and A L Haenni
Proc Natl Acad Sci U S A. 1968 February; 59(2): 554–560.
PMCID: PMC224708
Acetyl CoA carboxylase. I. Requirement for two protein fractions.
A W Alberts and P R Vagelos
Proc Natl Acad Sci U S A. 1968 February; 59(2): 561–568.
PMCID: PMC224709
Function of chloroplast DNA. I. Hybridization studies involving nuclear and chloroplast DNA with RNA from cytoplasmic (80S) and chloroplast (70S) ribosomes.
K K Tewari and S G Wildman
Proc Natl Acad Sci U S A. 1968 February; 59(2): 569–576.
PMCID: PMC224710
The process of infection with bacteriophage phi-X174. XXI. Replication and fate of the replicative form.
R Knippers, T Komano, and R L Sinsheimer
Proc Natl Acad Sci U S A. 1968 February; 59(2): 577–581.
PMCID: PMC224711
Stimulation of globin-chain initiation by hemin in the reticulocyte cell-free system.
W V Zucker and H M Schulman
Proc Natl Acad Sci U S A. 1968 February; 59(2): 582–589.
PMCID: PMC224712
In vitro synthesis of native myosin, actin, and tropomyosin from embryonic chick polyribosomes.
S M Heysood and A Rich
Proc Natl Acad Sci U S A. 1968 February; 59(2): 590–597.
PMCID: PMC224713
Mechanism of DNA chain growth. I. Possible discontinuity and unusual secondary structure of newly synthesized chains.
R Okazaki, T Okazaki, K Sakabe, K Sugimoto, and A Sugino
Proc Natl Acad Sci U S A. 1968 February; 59(2): 598–605.
PMCID: PMC224714
PHOTOSYNTHETIC PHOSPHORYLATION AS ENERGY SOURCE FOR PROTEIN SYNTHESIS AND CARBON DIOXIDE ASSIMILATION BY CHLOROPLASTS
Juan M. Ramírez, Francisca F. Del Campo, and Daniel I. Arnon
Proc Natl Acad Sci U S A. 1968 February; 59(2): 606–612.
PMCID: PMC224715
Unique features of the variable regions of Bence Jones proteins and their possible relation to antibody complementarity.
E A Kabat
Proc Natl Acad Sci U S A. 1968 February; 59(2): 613–619.
PMCID: PMC224716
Acetylcholinesterase. II. Crystallization, absorption spectra, isoionic point.
W Leuzinger, A L Baker, and E Cauvin
Proc Natl Acad Sci U S A. 1968 February; 59(2): 620–623.
PMCID: PMC224717
The conformational basis of energy transformations in membrane systems. I. Conformational changes in mitochondria.
J T Penniston, R A Harris, J Asai, and D E Green
Proc Natl Acad Sci U S A. 1968 February; 59(2): 624–631.
PMCID: PMC224718
A two-step mechanism for the interaction of estradiol with rat uterus.
E V Jensen, T Suzuki, T Kawashima, W E Stumpf, P W Jungblut, and E R DeSombre
Proc Natl Acad Sci U S A. 1968 February; 59(2): 632–638.
PMCID: PMC224719
Amino acids in Precambrian sediments: an assay.
J W Schopf, K A Kvenvolden, and E S Barghoorn
Proc Natl Acad Sci U S A. 1968 February; 59(2): 639–646.
PMCID: PMC224720
Journal Matter
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