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  • 1
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature structural & molecular biology 12 (2005), S. 294-303 
    ISSN: 1545-9985
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] Proteasome activity is fine-tuned by associating the proteolytic core particle (CP) with stimulatory and inhibitory complexes. Although several mammalian regulatory complexes are known, knowledge of yeast proteasome regulators is limited to the 19-subunit regulatory particle (RP), which confers ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 134 (1934), S. 214-214 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN previous letters to NATURE1,2 Bowden and Moore described experiments on the absorption spectrum of the unsaponifiable fraction of wheat–germ oil, which were carried out with the view of deciding whether vitamin E possesses a characteristic absorp tion. It was found that the ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Molecular biology reports 24 (1997), S. 103-112 
    ISSN: 1573-4978
    Keywords: assembly mechanism ; autocatalytic activation ; circular assemblies ; proteasome ; proteasome maturation ; proprotein processing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Eukaryotic 20S proteasomes are complex oligomeric proteins. The maturation process of the 14 different α- and β-subunits has to occur in a highly coordinate manner. In addition β-subunits are synthesized as proproteins and correct processing has to be guaranteed during complex maturation. The structure formation can be subdivided in different phases. The knowledge of the individual phases is summarized in this publication. As a first step the newly synthesized monomers have to adopt the correct tertiary structure, a process that might be supported in the case of the β-subunits by the intramolecular chaperone activity postulated for the prosequences. Subsequently the α-subunits form ring-like structures thereby providing docking sites for the different β-subunits. The result most likely is a double ring structure (13S precursor) representing half-proteasomes, which contain immature proproteins. Two 13S precursors associate to form the proteolytically inactive 16S assembly intermediate which still contains unprocessed β-monomers. In addition the chaperone Hsc73 is present within these particles suggesting an essential role during the structure formation process. The processing of monomers with an N-terminal threonine occurs within the 16S particles and is achieved autocatalytically by two subsequent processing events finally leading to the mature, active 20S proteasome.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Infection 17 (1989), S. 70-76 
    ISSN: 1439-0973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung 343 gesunde Erwachsene wurden mit fünf verschiedenen Chargen einer rekombinanten Hepatitis-B-Vakzine geimpft. 340 (99,1%) Impflinge bildeten Antikörper gegen Hepatitis B Oberflächenantigen (anti-HBs). Frauen und jüngere Personen wiesen höhere Anti-HBs-Werte auf. Alle Anti-HBs-positiven Personen entwickelten Antikörper gegen die allen Hepatitis-B-Virus-Subtypen gemeinsame Determinante „a“. Die Verträglichkeit des Impfstoffs war sehr gut, schwerere Nebenwirkungen wurden nicht beobachtet. Die Persistenz von Anti-HBs konnte bei 130 Personen drei Jahre und bei 15 Personen vier Jahre lang nach der ersten Impfung verfolgt werden. 21,7% bzw. 32,3% der Impflinge hatten nach dieser Zeit keine schützenden Anti-HBs-Titer mehr. Die Persistenz von Anti-HBs erwies sich als deutlich abhängig von der maximalen Anti-HBs-Konzentration, wobei die Kinetik, mit der Anti-HBs absank, relativ konstant war. Wiederimpfung von Personen, deren Anti-HBs-Spiegel auf Werte von 10 IU/l oder darunter abgesunken waren, führte zu einer sofortigen Immunantwort. Ein Vergleich dieser Befunde mit den Ergebnissen, die mit dem aus Plasma hergestellten Impfstoff erzielt wurden, zeigte keine größeren Unterschiede zwischen beiden Impfstoffen.
    Notes: Summary Three hundred and forty-three healthy adults were vaccinated with five different lots of recombinant hepatitis B vaccine. Three hundred and forty (99.1%) individuals produced antibodies against hepatitis B surface antigen (anti-HBs). Peak anti-HBs concentrations were significantly higher in females and younger individuals. All anti-HBs positive individuals developed antibodies to the common determinant “a” of HBsAg. The vaccine was well tolerated, without severe side reactions. Persistence of anti-HBs was followed in 130 individuals for 3, and in 15 for 4 years after the first vaccination of these two groups. 21.7% and 32.3%, respectively, no longer had protective levels of anti-HBs after this time. The persistence of anti-HBs was dependent on peak anti-HBs levels, with consistent kinetics of anti-HBs decline. Revaccination of individuals whose specific antibody levels had fallen below 10 IU/l led to a prompt anti-HBs response. Comparison with individuals vaccinated with plasma-derived hepatitis B vaccine revealed no substantial differences between the two vaccines.
    Type of Medium: Electronic Resource
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