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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature structural & molecular biology 11 (2004), S. 1206-1214 
    ISSN: 1545-9985
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] The bacterial Sm-like protein Hfq facilitates RNA-RNA interactions involved in post-transcriptional regulation of the stress response. Specifically, Hfq helps pair noncoding RNAs (ncRNAs) with complementary regions of target mRNAs. To probe the mechanism of this pairing, we generated a series of ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 67 (1990), S. 0 
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract A newly isolated periphytic marine bacterium has been shown to synthesize a true tyrosinase. The enzyme exhibited both cresolase and catecholase functions and catalyzed the biosynthesis of melanin from l-tyrosine. Enzyme activity was enhanced in the presence of oxidants and was inhibited by copper chelating agents such as diethyldithiocarbamic acid and cyanide. The apparent molecular weigth of the 2–40 tyrosinase (67 000) makes this enzyme the largest known procaryote tyrosinase.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 219 (2003), S. 0 
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Protein H is an immunoglobulin-binding protein expressed by certain M1 serotypes of Streptococcus pyogenes. In a recent study of invasive group A isolates, it was found that none of the 16 M1 serotype isolates analyzed expressed protein H on their surface despite the presence of the protein H gene (sph) in approximately one-third of the isolates. Selection of stable protein H-expressing variants could be achieved by infection of prtH+ non-expressing strains into a mouse skin and recovering bacteria from the spleen. This effect was independent of the transcription regulator Mga, since a similar effect was noted in an mga− mutant. Thus, host passage of S. pyogenes can lead to stable high level expression of Protein H.
    Type of Medium: Electronic Resource
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