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  • Articles  (30)
  • Springer  (30)
  • 1980-1984  (3)
  • 1970-1974  (11)
  • 1905-1909  (16)
  • Chemistry and Pharmacology  (30)
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  • Articles  (30)
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  • 1
    Electronic Resource
    Electronic Resource
    Preparation of a human lung purified plasma membrane fraction: Confirmation by enzyme markers, electron microscopy, and histamine H1 receptor binding (1984)
    Springer
    The journal of membrane biology 79 (1984), S. 33-39 
    Details
    ISSN: 1432-1424
    Keywords: plasma membrane ; lung ; histamine receptors ; 5′ nucleotidase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary A simple and rapid method of isolating plasma membranes from human peripheral lung tissue is described. The method involves homogenization of tissue in 0.25m sucrose-buffered medium followed by differential and sucrose density gradient centrifugation. Enzymatic and morphological characterization of the plasma membrane fraction revealed minimal contamination by nonplasma membrane fragments. The isolated plasma membranes showed an 18-fold purification of 5′-nucleotidase activity compared to the original homogenate. Electronmicroscopic studies of the plasma membrane fraction revealed the presence of small membrane vesicles having a trilaminar membrane structure. To further examine the purity of the plasma membrane preparation, the binding of the H1 receptor antagonist,3H pyrilamine, to the plasma membrane-enriched fraction was compared to the binding to crude membrane preparations. Both the plasma membrane-enriched fraction and the crude membrane preparation had similar Kd's for the histamine antagonist, but the plasma membrane-enriched fraction had a threefold greater binding capacity, reflecting the relative enrichment of plasma membranes of the preparation. Thus, a method has been developed for the isolation of plasma membranes from human peripheral lung which should provide material for a variety of biochemical and pharmacological studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01868524
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  • 2
    Electronic Resource
    Electronic Resource
    The conductivity of aqueous zinc chloride solutions (1982)
    Springer
    Journal of applied electrochemistry 12 (1982), S. 1-5 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The conductivity of aqueous zinc chloride reaches a maximum of 10.7 Ω−1 m−1 at 3.7 M ZnCl2. Measurements on chlorinated ZnCl2 showed that at low chlorine concentrations, the conductivity increased linearly with the square root of the chlorine concentration. The increase was due to the three species: dissolved chlorine, Cl 3 − and HClO. Ammonium chloride additions increased the conductivity of aqueous zinc chloride substantially.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01112058
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  • 3
    Electronic Resource
    Electronic Resource
    The effect of additives on the morphology of zinc electrodeposited from a zinc chloride electrolyte at high current densities (1981)
    Springer
    Journal of applied electrochemistry 11 (1981), S. 677-683 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract There are advantages if zinc can be deposited electrochemically at high current densities. In order to improve the deposit at current densities exceeding 2000 Am−2, various additions were made to the electrolyte. It was found that proteinous additives produced planar deposits with a (10.2) (10.3) orientation and a current efficiency of around 85% in a small laboratory cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00615170
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  • 4
    Electronic Resource
    Electronic Resource
    Biochemical polymorphisms in feral and inbred mice (Mus musculus) (1971)
    Springer
    Biochemical genetics 5 (1971), S. 457-466 
    Details
    ISSN: 1573-4927
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Examination of the frequencies of several loci controlling isozymes in three geographically distinct feral populations of mice showed the average animal to be heterozygous at 10.3% of his loci. There was no evidence for interaction between loci, nor any evidence for inbreeding in the populations. Thirty-nine inbred strains, including four newly derived ones, were also characterized for their alleles for as many as 16 polymorphic loci. Among these strains, variability is at least as great as in any single feral population, but probably less than that found among all feral populations of the species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00487135
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  • 5
    Electronic Resource
    Electronic Resource
    Observations on the regulation of uricase activity during development of Drosophila melanogaster (1973)
    Springer
    Biochemical genetics 8 (1973), S. 37-45 
    Details
    ISSN: 1573-4927
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract To elucidate the mechanisms involved in the regulation of uricase activity in Drosophila melanogaster, a comparative analysis of the patterns of uricase activity during development was undertaken for the wild type, Ore-R, and the mutants ry 2 and ma-1. Uricase activity in ry 2 and ma-l, unlike that in Ore-R, increased rapidly following emergence of the adult. This study indicates that uricase in Drosophila, in contrast to that in several microorganisms, is not induced by uric acid, since ry 2 and ma-l with no detectable uric acid have higher activity than the wild type.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00485555
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  • 6
    Electronic Resource
    Electronic Resource
    Mitochondrial malate dehydrogenase and malic enzyme: Mendelian inherited electrophoretic variants in the mouse (1970)
    Springer
    Biochemical genetics 4 (1970), S. 707-718 
    Details
    ISSN: 1573-4927
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Malate dehydrogenase and malic enzyme each possess supernatant and mitochondrial molecular forms which are structurally and genetically independent. We describe electrophoretic variants of the mitochondrial enzymes of malate dehydrogenase and malic enzyme in mice. Progeny testing from genetic crosses indicated that the genes which code for mitochondrial malate dehydrogenase and malic enzyme were not inherited maternally but as independent unlinked nuclear autosomal genes. The locus for mitochondrial malic enzyme was located on linkage group I. Linkage analysis with a third mitochondrial enzyme marker, glutamic oxaloacetic transaminase, showed that the nuclear genes which code for the three mitochondrial enzymes were not closely linked to each other. This evidence suggests that clusters of nuclear genes coding for mitochondrial function are unlikely in mice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00486384
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  • 7
    Electronic Resource
    Electronic Resource
    Control of lysosomal acid phosphatase expression in man-mouse cell hybrids (1974)
    Springer
    Biochemical genetics 11 (1974), S. 121-139 
    Details
    ISSN: 1573-4927
    Keywords: gene expression ; gene mapping ; lysosomal enzymes ; cell fusion ; gel electrophoresis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Lysosomal acid phosphatase activity in human and mouse cells was separated into multiple zones by starch gel electrophoresis. One of the two major zones in the mouse was apparently extinguished when genetic information from man and the mouse was combined in proliferating man-mouse somatic cell hybrids. The evidence suggested that the absence of the mouse lysosomal acid phosphatase (mAP-1) was influenced by the human genome. The gene coding for human acid phosphatase (hAP-1) was shown to be unlinked to the presumed human component which extinguished the mouse acid phosphatase (mAP-1). The mechanism of “extinction” is postulated to be a modification in the processing of the mouse lysosomal enzyme. A dimeric structure was suggested for acid phosphatase-1 of man, mouse, and rat since a single hybrid enzyme was expressed in man-mouse and mouse-rat somatic cell hybrids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00485769
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  • 8
    Electronic Resource
    Electronic Resource
    Genetics of human-mouse somatic cell hybrids: Linkage of human genes for isocitrate dehydrogenase and malate dehydrogenase (1972)
    Springer
    Biochemical genetics 7 (1972), S. 193-204 
    Details
    ISSN: 1573-4927
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Based on somatic cell genetic analysis, autosomal gene linkage is reported for the supernatant enzymes of human isocitrate dehydrogenase (IDH) and malate dehydrogenase (MDH) in human-mouse cell hybrids. The IDH, MDH linkage was not linked to the X and E 17 chromosomes or to 12 additional human enzyme markers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00484817
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  • 9
    Electronic Resource
    Electronic Resource
    Hydrolyse des Erbsenlegumins (1909)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 48 (1909), S. 692-698 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01349048
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  • 10
    Electronic Resource
    Electronic Resource
    Ein neues Zersetzungsprodukt des Gliadins (1909)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 48 (1909), S. 429-433 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01424937
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