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  • 1
    Electronic Resource
    Electronic Resource
    Induction of proteins during phage reactivation induced by UV irradiation, oxygen and peroxide in Bacteroides fragilis (1984)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 23 (1984), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Phage reactivation systems in Bacteroides fragilis were induced by far-UV irradiation, O2 and H2O2. These three treatments also induced the synthesis of 3, 6, and 4 protein bands, respectively, which were easily detectable by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). Two proteins with apparent Mrs of approx. 90 000 and 70 000 were induced by all three treatments. Caffeine completely inhibited UV- and O2-induced phage reactivation and prevented the synthesis of the Mr 90 000 and Mr 70 000 proteins. The results suggest that these two proteins may be involved in phage reactivation processes induced by UV, O2 and H2O2 in B. fragilis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1984.tb01048.x
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  • 2
    Electronic Resource
    Electronic Resource
    Peroxide inducible phage reactivation in Bacteroides fragilis (1983)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 20 (1983), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Reactivation of UV-irradiated phage b-1 was induced by H2O2 and UV in Bacteroides fragilis. The characteristics of H2O2 and UV induced phage reactivation differ from a previously reported oxygen induced reactivation system. The survival of B. fragilis cells after UV irradiation was also increased by pretreatment with H2O2. DNA synthesis was not inhibited in the host cells exposed to H2O2 concentrations which induced phage reactivation. The pattern of DNA degradation and synthesis after UV irradiation with and without H2O2 differed from the effect of O2 on DNA synthesis in irradiated B. fragilis cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1983.tb00156.x
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of oxygen and peroxide on Bacteroides fragilis cell and phage survival after treatment with DNA damaging agents (1984)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 24 (1984), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Bacteroides fragilis Bf-2 cells were more sensitive to far-UV radiation, N-methyl-N′-nitrosoguanidine, ethylmethane sulphonate, acriflavine and mitomycin C under aerobic conditions than under anaerobic conditions. The opposite effect was observed with H2O2-treated cells and exposure to O2 enhanced the survival of H2O2-treated cells. Pretreatment of cells with sublethal concentrations of H2O2 also increased the survival of H2O2-treated cells. Reactivation of UV- and X-irradiated and methylmethane sulphonate and H2O2-treated phage b-1 was induced by O2 and H2O2 in B. fragilis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1984.tb01297.x
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  • 4
    Electronic Resource
    Electronic Resource
    Evaluating the potential of using fold-recognition models for molecular replacement (2001)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 1428-1434 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Here, the proposal is investigated that protein tertiary structure prediction methods and threading methods in particular might be applied to the problem of solving a protein structure by X-ray crystallography, thus reducing the need for the more traditional experimental intensity methods of data phasing, such as heavy-metal isomorphous replacement and anomalous scattering methods, and without reference to a very closely related protein of known structure. If this kind of approach were to become successful and reliable, this would represent a significant advance in protein structure determination, offering an easy and accessible method for the initial data phasing for proteins' crystal structures, utilizing the vast amount of structural data, deposited in the Brookhaven PDB, that has been accumulated over the past 30 years of crystallographic structural studies. In the light of the ongoing structural genomics initiatives, the successful development of this kind of approach would be of enormous benefit.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444901013403
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  • 5
    Electronic Resource
    Electronic Resource
    Origins and relationships of industrial solvent-producing clostridial strains (1995)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology reviews 17 (1995), S. 0 
    Details
    ISSN: 1574-6976
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract: The origins and the development of the various industrial strains of solvent-producing clostridia have been re-examined and their taxonomic relationships re-assessed, utilizing data derived from a recent study employing biotyping, chromosomal DNA fingerprinting and 16S rRNA gene sequencing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6976.1995.tb00206.x
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  • 6
    Electronic Resource
    Electronic Resource
    Shared structural motif in proteins (1993)
    [s.l.] : Nature Publishing Group
    Nature 365 (1993), S. 21-21 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SWINDELLS ETAL. REPLY - The chief aim of our Scientific Correspondence1 was to point out the structural similarity between HPr and APt. With the coordinates of NDPK kindly provided by Professor Janin but not yet available in the protein data-bank, we can confirm that this protein belongs to the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/365021b0
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  • 7
    Electronic Resource
    Electronic Resource
    Prediction of progress at last (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 105-106 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE second fundamental code in molecular biology - how a protein's tertiary structure is coded by its amino acid sequence - has yet to be cracked. But Benner and Gerloff1, Bowie et a/.2, and Finkelstein and Reva3 suggest alternative ways forward which offer real hope for progress in ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/354105a0
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  • 8
    Electronic Resource
    Electronic Resource
    Recurrence of a binding motif? (1993)
    [s.l.] : Nature Publishing Group
    Nature 362 (1993), S. 299-299 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR — The structure of histidine-containing phosphocarrier protein (HPr) has been analysed in detail by both X-ray crystallography1'2 and nuclear magnetic resonance (NMR) spectros-copy3, and the determination of the un-phosphorylated form1 led to a proposal for a detailed model for the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/362299a0
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  • 9
    Electronic Resource
    Electronic Resource
    Protein superfamilles and domain superfolds (1994)
    [s.l.] : Nature Publishing Group
    Nature 372 (1994), S. 631-634 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] As the protein sequence and structure databases expand rapidly a better understanding of the relationships between proteins is required. A classification is considered that extends the sequence-based superfamilies to include proteins with similar function and three-dimensional structures but no ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/372631a0
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  • 10
    Electronic Resource
    Electronic Resource
    Initiation of solvent production, clostridial stage and endospore formation in Clostridium acetobutylicum P262 (1984)
    Springer
    Applied microbiology and biotechnology 20 (1984), S. 256-261 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary A minimal medium was used to investigate the triggers regulating the initiation of solvent production and differentiation in Clostridium acetobutylicum P262. The accumulation of acid end-products caused the inhibition of cell division and the initiation of solvent production and cell differentiation. Initiation only occurred with a narrow pH range. Glucose or ammonium limited cultures failed to achieve the necessary threshold of acid end-products and solvent production and differentiation were not initiated. The addition of acid end-products or ammonium to cultures containing suboptimal levels of glucose or nitrogen respectively, enhanced solvent production. Resuspension of cells in media containing the threshold level of acid end-products and residual glucose induced endospore formation. Glucose or ammonium limitation did not induce sporulation and there was a requirement for glucose and ammonium during solventogenesis and endospore formation. Initiation of solvent production and clostridial stage formation were essential for sporulation. The induction of endospore formation in C. acetobutylicum P262 differs from that in the aerobic endospore forming bacteria where sporulation is initiated by nutrient starvation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00250635
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