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  • Articles  (50)
  • 1995-1999  (37)
  • 1955-1959  (13)
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  • 1
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    Genome sequence of an obligate intracellular pathogen of humans: Chlamydia trachomatis (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-10-23
    Description: Analysis of the 1,042,519-base pair Chlamydia trachomatis genome revealed unexpected features related to the complex biology of chlamydiae. Although chlamydiae lack many biosynthetic capabilities, they retain functions for performing key steps and interconversions of metabolites obtained from their mammalian host cells. Numerous potential virulence-associated proteins also were characterized. Several eukaryotic chromatin-associated domain proteins were identified, suggesting a eukaryotic-like mechanism for chlamydial nucleoid condensation and decondensation. The phylogenetic mosaic of chlamydial genes, including a large number of genes with phylogenetic origins from eukaryotes, implies a complex evolution for adaptation to obligate intracellular parasitism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stephens, R S -- Kalman, S -- Lammel, C -- Fan, J -- Marathe, R -- Aravind, L -- Mitchell, W -- Olinger, L -- Tatusov, R L -- Zhao, Q -- Koonin, E V -- Davis, R W -- AI 39258/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1998 Oct 23;282(5389):754-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Infectious Diseases, University of California, Berkeley, CA 94720, USA. ctgenome@socrates.berkeley.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9784136" target="_blank"〉PubMed〈/a〉
    Keywords: Aerobiosis ; Amino Acid Sequence ; Amino Acids/biosynthesis ; Bacterial Outer Membrane Proteins/genetics ; Bacterial Proteins/chemistry/genetics ; Biological Evolution ; Chlamydia trachomatis/classification/*genetics/metabolism/physiology ; DNA Repair ; Energy Metabolism ; Enzymes/chemistry/genetics ; *Genome, Bacterial ; Humans ; Lipids/biosynthesis ; Molecular Sequence Data ; Peptidoglycan/biosynthesis/genetics ; Phylogeny ; Protein Biosynthesis ; Recombination, Genetic ; *Sequence Analysis, DNA ; Transcription, Genetic ; Transformation, Bacterial ; Virulence
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
    Electronic Resource
    Electronic Resource
    Interaction of gas-phase atomic deuterium with the Ru(001)–p(1×2)–O surface: Kinetics of hydroxyl and water formation (1996)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 104 (1996), S. 7713-7718 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The deuteration of oxygen adatoms on the Ru(001) surface has been investigated by means of temperature programmed desorption and high-resolution electron energy loss spectroscopy. Exposure of gas-phase atomic deuterium to the p(1×2) oxygen overlayer with a fractional adatom coverage of oxygen of 0.5 leads to the production of water at a surface temperature as low as 90 K. After exposure to molecular deuterium, no reaction is observed, suggesting that a direct Eley–Rideal (ER) reaction occurs between the impinging deuterium atoms and the preadsorbed oxygen. Only after a very low exposure of deuterium was it possible to isolate chemisorbed OD groups on the surface, implying that OD formation is the rate-limiting step in the formation of water via ER kinetics on Ru(001). Estimates of the ER reaction cross sections were made, and for the deuteration of adsorbed oxygen and hydroxyls, the cross sections were found to be (7.0±0.3)×10−17 cm2 and (2.2±0.1)×10−15 cm2, respectively. In addition to the ER mechanism, the chemisorbed OD groups could also react with coadsorbed deuterium adatoms via Langmuir–Hinshelwood (LH) kinetics at surface temperatures near 170 K, suggesting an activation barrier that is less than 9 kcal/mol. This implies that OD formation is also the rate-limiting step in the formation of water via LH kinetics on Ru(001). © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.471452
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  • 3
    Electronic Resource
    Electronic Resource
    Insect Attractants, Esters of 6-Methyl-3-cyclohexene-1-carboxylic Acid as Attractants for the Mediterranean Fruit Fly (1958)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 6 (1958), S. 592-592 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf60090a005
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  • 4
    Electronic Resource
    Electronic Resource
    Insect Attractants,Esters of 6-Methyl-3-cycohexene-1-carboxylic acid as Attractants for the Mediterranean Fruit Fly (1958)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 6 (1958), S. 592-594 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf60090a601
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  • 5
    Electronic Resource
    Electronic Resource
    Book reviews (1995)
    Springer
    Formal aspects of computing 7 (1995), S. 581-585 
    Details
    ISSN: 1433-299X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01211634
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  • 6
    Electronic Resource
    Electronic Resource
    Regulation of mosquitocidal toxin synthesis in Bacillus sphaericus (1995)
    Springer
    Applied microbiology and biotechnology 43 (1995), S. 310-314 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Translational lacZ fusions to the promoters of the parasporal, crystal protein (binary toxin) and 100-kDa ADP-ribosylating mosquitocidal toxin genes of Bacillus sphaericus were prepared and expression of the toxin genes monitored as β-galactosidase activity. Transcription of the crystal protein gene fusion began immediately before the end of exponential growth and continued into stationary phase in both B. sphaericus and Bacillus subtilis but accompanied exponential-phase growth in Escherichia coli. Expression of this fusion was severley delayed in a B. subtilis spo0A mutant and decreased relative to the wild type in a B. subtilis spoIIAC background. β-Galactosidase activity from the 100-kDa toxin gene fusion was restricted to early exponential phase in B. sphaericus, but in B. subtilis it continued into late exponential phase. Expression was about eightfold lower in B. sphaericus than B. subtilis suggesting an element of negative control in the native host.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530050408
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  • 7
    Electronic Resource
    Electronic Resource
    Regulation of mosquitocidal toxin synthesis in Bacillus sphaericus (1995)
    Springer
    Applied microbiology and biotechnology 43 (1995), S. 310-314 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Translational lacZ fusions to the promoters of the parasporal, crystal protein (binary toxin) and 100-kDa ADP-ribosylating mosquitocidal toxin genes of Bacillus sphaericus were prepared and expression of the toxin genes monitored as β-galactosidase activity. Transcription of the crystal protein gene fusion began immediately before the end of exponential growth and continued into stationary phase in both B. sphaericus and Bacillus subtilis but accompanied exponential-phase growth in Escherichia coli. Expression of this fusion was severely delayed in a B. subtilis spoOA mutant and decreased relative to the wild type in a B. subtilis spoIIAC background. β-Galactosidase activity from the 100-kDa toxin gene fusion was restricted to early exponential phase in B. sphaericus, but in B.subtilis it continued into late exponential phase. Expression was about eightfold lower in B. sphaericus than b. subtilis suggesting an element of negative control in the native host.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00172830
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  • 8
    Electronic Resource
    Electronic Resource
    Optimization of mosquitocidal toxin synthesis from Bacillus sphaericus using gene fusions (1996)
    Springer
    World journal of microbiology and biotechnology 12 (1996), S. 7-11 
    Details
    ISSN: 1573-0972
    Keywords: Bacillus sphaericus ; biological control ; fermentation ; gene control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract β-Galactosidase gene fusions have been used to monitor the progress of mosquito-larvicidal-toxin gene expression in Bacillus sphaericus strain 2362. β-Galactosidase estimation in cells from late-growth-phase batch cultures was compared with larvicidal toxicity after incubation for 48 h. Conditions which promoted efficient sporulation, such as plentiful trace elements and relatively crude protein sources (soybean or cottonseed flours), enhanced reporter gene expression and provided high toxicity. However, acetate, which repressed sporulation, similarly repressed binary toxin yield. Gene fusions to the binary and 100-kDa toxin genes of B. sphaericus could be useful for the rapid screening of fermentation conditions for the local production of this larvicidal bacterium but, in view of the poor correlation with toxicity at high toxicity levels, such experiments should be confirmed with bioassays.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00327790
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  • 9
    Electronic Resource
    Electronic Resource
    Stereoselection in designed three-helix bundle metalloproteins (1998)
    New York, NY [u.a.] : Wiley-Blackwell
    Chirality 10 (1998), S. 35-40 
    Details
    ISSN: 0899-0042
    Keywords: de novo design ; self-assembly ; metalloproteins ; diastereoselection ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The stereochemical consequences of the metal-ion assisted self-assembly of parallel three-helix peptide bundles are investigated. Chiral induction in the self-assembly of systems containing extensive protein secondary structure is compared with the racemic synthesis of short metallopeptides. Isolation and characterization of the individual stereoisomers of an exchange-inert metalloprotein provide structural insights into analogous exchange-labile systems. Chirality 10:35-40, 1998. © 1998 Wiley-Liss,Inc.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/chir.7
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  • 10
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    Long-term behaviour of precipitating tropical cloud systems: A numerical study (1996)
    Wiley
    Details
    Publication Date: 1996-07-01
    Print ISSN: 0035-9009
    Electronic ISSN: 1477-870X
    Topics: Geography , Physics
    Published by Wiley on behalf of Royal Meteorological Society.
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