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  • Molecular Cell Biology  (19)
  • Wiley-Blackwell  (19)
  • Wiley
  • 2020-2023
  • 2010-2014
  • 1970-1974  (19)
  • 1972  (19)
Sammlung
Schlagwörter
Verlag/Herausgeber
  • Wiley-Blackwell  (19)
  • Wiley
Erscheinungszeitraum
  • 2020-2023
  • 2010-2014
  • 1970-1974  (19)
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    The kinetics of colicin E3 induced fragmentation of Escherichia coli 16S ribosomal RNA in vivo (1972)
    New York, N.Y. : Wiley-Blackwell
    Journal of Supramolecular Structure 1 (1972), S. 135-144 
    Details
    ISSN: 0091-7419
    Schlagwort(e): Life Sciences ; Molecular Cell Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Notizen: Fixation of colicin E3 to sensitive bacteria is followed, after a lag of 2 to 6 min, by the rapid degradation of all the RNA of the 30S ribosomal subunits, yielding a large 15.5S fragment and a smaller fragment, containing the 3′-terminal end of the 16S RNA. The small RNA fragment which was estimated to consist of about 52 nucleotides, was retained within the 30S subunit in vivo and was subsequently recovered quantitatively without apparent further degradation. Kinetic studies of the cleavage of 16S RNA indicated that this is the primary and lethal effect of colicin E3 and the primary cause of the observed inhibition of protein synthesis in vivo. Small amounts of an RNA fragment, apparently identical in size to the small E3-fragment, were also isolated from 30S particles obtained from untreated bacteria.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jss.400010206
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  • 2
    Digitale Medien
    Digitale Medien
    The effect of cytoplasmic proteins on the reaggregation of dissociated ghost membranes of Bacillus megaterium KM (1972)
    New York, N.Y. : Wiley-Blackwell
    Journal of Supramolecular Structure 1 (1972), S. 153-158 
    Details
    ISSN: 0091-7419
    Schlagwort(e): Life Sciences ; Molecular Cell Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Notizen: The effect of cytoplasmic proteins on the reassociation of membrame proteins and lipids which have been solubilized in sodium dodecyl sulfate and urea has been investigated. The cytoplasmic proteins have been found to inhibit the reassociation of the membrane proteins. Moreover, approximately 15% of the cytoplasmic proteins co-aggregate with the membrane components after removal of the sodium dodecyl sulfate and urea.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jss.400010208
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  • 3
    Digitale Medien
    Digitale Medien
    Recombination in yeast mitochondrial DNA (1972)
    New York, N.Y. : Wiley-Blackwell
    Journal of Supramolecular Structure 1 (1972), S. 145-152 
    Details
    ISSN: 0091-7419
    Schlagwort(e): Life Sciences ; Molecular Cell Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Notizen: When haploid yeast strains containing mitochondrial DNAs (mtDNAs) of different buoyant densities are mated, the resulting zygotes contain a mixed population of mitochondria and mitochondrial DNAs. During vegetative growth of diploid cells formed from such a cross between a petite strain with mtDNA of density 1.677 g cm-3 and a respiratory competent strain with mtDNA of density 1.684 g cm-3, mtDNAs with intermediate buoyant densities are obtained. Virtually all newly synthesized mtDNA in diploid ρ- progeny has the intermediate buoyant density. Therefore, within 2 generations of growth of the diploid cells, the intermediate buoyant density species predominate. In crosses between a respiratory competent strain and other petite strains with different values of genetic suppressiveness, it was found that the amount of recombination yielding mtDNAs of intermediate buoyant densities roughly parallels the degree of suppressiveness. Individual clones of respiratory deficient cells from such crosses were also isolated to confirm that stable mtDNAs with intermediate buoyant densities were obtained. Thus, it is apparent that some form of recombination takes place within the mtDNAs of yeast cells that results in stable mtDNA species.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jss.400010207
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  • 4
    Digitale Medien
    Digitale Medien
    Structure of the lipid phase of rauscher murine leukemia virus (1972)
    New York, N.Y. : Wiley-Blackwell
    Journal of Supramolecular Structure 1 (1972), S. 50-54 
    Details
    ISSN: 0091-7419
    Schlagwort(e): Life Sciences ; Molecular Cell Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Notizen: The lipid-containing membrane of Rauscher murine leukemia virus was studied using stearic acid spin labels with the nitroxide ring on the C5 and C16 positions. The environment of the C5 spin label was found to be much more rigid than that of the C16 spin label. This result, which parallels similar observations in red cell membranes and influenza virus, suggests that the lipid phase of Rauscher murine leukemia virus is arranged in a bilayer.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jss.400010107
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  • 5
    Digitale Medien
    Digitale Medien
    Association of newly synthesized major fl coat protein with infected host cell inner membrane (1972)
    New York, N.Y. : Wiley-Blackwell
    Journal of Supramolecular Structure 1 (1972), S. 8-18 
    Details
    ISSN: 0091-7419
    Schlagwort(e): Life Sciences ; Molecular Cell Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Notizen: The bacteriophage fl major coat protein becomes associated with the host cell inner membrane very shortly after it is synthesized. Pulse-chase experiments suggest that the virus is never stably associated with the host cell outer membrane; we propose that it passes directly from the inner membrane to the growth medium.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jss.400010103
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  • 6
    Digitale Medien
    Digitale Medien
    Cell surface glycoproteins I: Accumulation of a glycoprotein on the outer surface of mouse LS cells during mitosis (1972)
    New York, N.Y. : Wiley-Blackwell
    Journal of Supramolecular Structure 1 (1972), S. 1-7 
    Details
    ISSN: 0091-7419
    Schlagwort(e): Life Sciences ; Molecular Cell Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Notizen: Surface glycopeptides derived from vertebrate cells have been separated into 4 classes by chromatography on DEAE cellulose columns. Among different cell types tested, significant differences were observed in the relative amounts of these 4 glycopeptide classes present on the cell surface. This type of heterogeneity is consistent with the expected biological role of cell surface glycoproteins. One glycopeptide, as revealed by the DEAE column analysis, was found to have a characteristic metabolic pattern in mouse LS cells. New accumulation of this structure, called glycopeptide 4, on the cell surface was detected only around the period of cell division (M phase) and not at other times during the cell cycle.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jss.400010102
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  • 7
    Digitale Medien
    Digitale Medien
    Regulation of polar cap formation in the life cycle of Escherichia coli (1972)
    New York, N.Y. : Wiley-Blackwell
    Journal of Supramolecular Structure 1 (1972), S. 29-37 
    Details
    ISSN: 0091-7419
    Schlagwort(e): Life Sciences ; Molecular Cell Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Notizen: Polar cap formation has been studied in synchronized Escherichia coli cells. It is dependent on a signal given after completion of a round of DNA replication. A 20 min time interval between the release of this signal and physical cell separation is probably the time required for the completion of polar caps. During this time murein is synthesized at an increased rate and cells are especially sensitive to penicillin.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jss.400010105
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  • 8
    Digitale Medien
    Digitale Medien
    Magnetic resonance studies on membrane and model membrane systems: II. Phosphorus spectra and relaxation rates in dispersions of lecithin (1972)
    New York, N.Y. : Wiley-Blackwell
    Journal of Supramolecular Structure 1 (1972), S. 19-28 
    Details
    ISSN: 0091-7419
    Schlagwort(e): Life Sciences ; Molecular Cell Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Notizen: We present phosphorus magnetic resonance (PhMR) spectra, relaxation rates, and chemical shifts for unsonicated and sonicated lecithins in aqueous dispersions and for egg lecithin in chloroform and methanol. Aqueous lecithin dispersions are characterized by long values for T1 and considerably shorter values for T2. Both of these values as well as the value of the linewidth change with sonication. Lecithin dispersions in methanol and chloroform have relaxation rates shorter than those seen for sonicated lecithin. We do not, at this time, present a detailed interpretation of these results. On an empirical level, however, since the relaxation rates are sensitive to the type of dispersion and possibly to the solvent, we are optimistic that they will be sensitive to structural changes involving the headgroup region.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jss.400010104
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  • 9
    Digitale Medien
    Digitale Medien
    Four gel systems for electrophoretic fractionation of membrane proteins using ionic detergentsThis work was supported by U.S.P.H.S. Grant No. AM05507 and N.S.F Grant No. GB-8702 to Dr. H. M. Kalckar, and by U.S.P.H.S. Grant No. FR05528 to the Worcester Foundation (1972)
    New York, N.Y. : Wiley-Blackwell
    Journal of Supramolecular Structure 1 (1972), S. 66-75 
    Details
    ISSN: 0091-7419
    Schlagwort(e): Life Sciences ; Molecular Cell Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Notizen: Membrane proteins were fractionated electrophoretically in polyacrylamide gels containing either anionic or cationic detergent at either pH 2.4 or 8.3. In all four systems, polypeptides migrated as monomers bearing the charge of the detergent ion and semi-logarithmic molecular weight-mobility relationships pertained. Electrophoresis of erythrocyte membrane proteins in these systems yielded very similar protein staining patterns but revealed significant differences in sialoglycoprotein migration.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jss.400010110
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  • 10
    Digitale Medien
    Digitale Medien
    Small-angle X-ray scattering of human serum high-density lipoproteins (1972)
    New York, N.Y. : Wiley-Blackwell
    Journal of Supramolecular Structure 1 (1972), S. 98-104 
    Details
    ISSN: 0091-7419
    Schlagwort(e): Life Sciences ; Molecular Cell Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Notizen: Small-angle x-ray scattering (SAXRS) studies of the human serum high-density lipoprotein HDL2 indicate a symmetrical particle with a radius of gyration Rg = 46 Å. The positions and intensities of subsidiary maxima in the scattering curves are not consistent with those of a uniformly electron dense sphere. Scattering curves calculated for spheres with a step-model radial electron density distribution, show good agreement with the experimental scattering curve for HDL2 only for specific values of the step function used. The dimensions obtained for the electron-deficient core and electron-rich shell model are quantitatively consistent with a predominantly surface location for the HDL2 protein and phospholipid head groups, the more hydrocarbon species being located in the interior of the particle.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jss.400010203
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