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  • 1985-1989  (9)
  • 1975-1979
  • 1965-1969
  • 1987  (9)
  • 1
    Electronic Resource
    Electronic Resource
    Multiple Steady States in a Coupled Enzyme System Represented by the Enzymatically Catalyzed Production of l-Phenylalanine (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 501 (1987), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1987.tb45750.x
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  • 2
    Electronic Resource
    Electronic Resource
    Occurrence and nature of mixed infections in nodules of field-grown soybeans (Glycine max) (1987)
    Springer
    Biology and fertility of soils 5 (1987), S. 112-114 
    Details
    ISSN: 1432-0789
    Keywords: Mixed nodule infections ; Glycine max ; Soybeans ; Bradyrhizobium japonicum strains ; Field inoculation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Mixed infections of Bradyrhizobium japonicum strains in early and late nodules of four soybean cultivars were studied in a field soil. Nodule occupants were identified by immunofluorescence using serogroup specific antibodies prepared against B. japonicum strains USDA 110, USDA 123, and USDA 138. Double infection was determined directly by combined examination of the same microscopic field by fluorescence and phase contrast microscopy. Double strain occupancy was observed consistently, and its occurrence did not differ substantially in pouch, soil pot, and field experiments, ranging in incidence from 12% to 32%. No significant differences in the incidence or nature of double infection could be attributed to cultivar, seed inoculation, or plant maturity. Strains reactive to strain USDA 123-fluorescent antibody were dominant in both singly and doubly infected nodules irrespective of cultivar, plant age, or seed inoculation with strain USDA 110.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00257644
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  • 3
    Electronic Resource
    Electronic Resource
    Cotransposition of a highly repetitive DNA element with flanking sequences in the genome of the midgeChironomus thummi (1987)
    Springer
    Journal of molecular evolution 26 (1987), S. 311-319 
    Details
    ISSN: 1432-1432
    Keywords: Chironomus thummi ; Repetitive DNA ; Cotransposition ; NTS of rDNA ; Claelements ; Satellite DNA ; DNA amplification
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A family of highly repetitive DNA elements, the Cla-elements, is present in the genomes of the two sibling speciesChironomus th. thummi andCh. th. piger. These Cla-elements are organized in large tandem repetitive clusters as well as occuring as interspersed monomeric elements, in both subspecies. The analysis of a monomeric Cla-element and several kilobases of its flanking sequences fromCh. th. piger revealed that the short Cla-elements are cotransposed together with adjacent DNA. We found the same association of Cla-elements with specific flanking DNA in clones obtained from the rDNA ofCh. th. thummi and from nonribosomal Cla-DNA ofCh. th. piger. The Cla-element-flanking DNA is clearly also repetitive, but mainly of inter-spersed organization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02101149
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  • 4
    Electronic Resource
    Electronic Resource
    Evolutionary conservation of the 3′ ends of members of a family of giant secretory protein genes inChironomus pallidivittatus (1987)
    Springer
    Journal of molecular evolution 25 (1987), S. 20-28 
    Details
    ISSN: 1432-1432
    Keywords: Balbiani rings ; Evolution ; Immunological detection ; Nucleotide sequence ; 3′ End
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Two cDNA clones representing the 3′-end regions of BR1 and BR2 75S mRNA were obtained fromChironomus pallidivittatus. The regular structure characterizing the core of these genes, consisting of tandemly arranged repeat units, changes into a more irregular structure toward the 3′ end. Distal to a standard type of repeat unit with a characteristic excess of positive charges, a new type of repeat with a high, negative charge density is interspersed among parts of the standard unit. The last 111 amino acids before the stop codon represent a unique region distinctly different in amino acid composition from upstream regions, and include two partially homologous hydrophobic regions. Sequence comparison of 3′-end regions from clones representing BR1 and BR2 genes indicates striking sequence conservation in the unique part of the region. Analysis of the level of silent site divergence shows that the homology increases in the 3′ direction up to the polyadenylation site. That the unique region is retained as a part of the secreted protein is shown by Western blotting.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02100037
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  • 5
    Electronic Resource
    Electronic Resource
    On locally order-polynomially complete modular lattices (1987)
    Springer
    Acta mathematica hungarica 49 (1987), S. 481-486 
    Details
    ISSN: 1588-2632
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01951011
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  • 6
    Electronic Resource
    Electronic Resource
    Resin acids of the oleoresins of conifers growing in Transcarpathia (1987)
    Springer
    Chemistry of natural compounds 23 (1987), S. 173-175 
    Details
    ISSN: 1573-8388
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The chemical composition of the resin acids of the oleoresins of five species of the conifers of Transcarpathia has been studied. The oleoresins contain eight resin acids. Δ8,9-Isopimaric and anticopalic acids have been found in the acid part of the oleoresin of the Weymouth pine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00598751
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  • 7
    Electronic Resource
    Electronic Resource
    Investigation of the products of the ozonolysis of larixol (1987)
    Springer
    Chemistry of natural compounds 22 (1987), S. 541-547 
    Details
    ISSN: 1573-8388
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract On the ozonization of larixol in methanol followed by treatment with ammonium chloride, the main reaction products were 15,16,20-trisnorlabd-6-ene-8,13-dione and 6-hydroxy-8,13;8,14-diepoxy-15,20-bisnorlabd-14-one. When ozonization was performed in methanol in the presence of dimethyl sulfide or in methylene chloride in the presence of pyridine, 6,14-dihydroxy-8,13;8,14-diepoxy-15,20-bisnorlabdane and 6-hydroxy-14,50,20-trisnorlabd-8,13-dione predominated in the reaction products.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00599257
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  • 8
    Electronic Resource
    Electronic Resource
    Continuous production of L-phenylalanine by transamination (1987)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 29 (1987), S. 482-487 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: L-Phenylalanine was produced continuously from L-as-partate and phenylpyruvate by transaminase from a newly screened Pseudomonas putida strain. The process was carried out with an isolated enzyme in homogeneous phase in an enzyme membrane reactor and with immobilized whole cells in a stirred tank reactor, respectively. Due to the difference in transport resistance, the productivity of the free enzyme in homogeneous phase (72 mmol/L h) was about 3 times higher than the productivity achieved using immobilized cells. However, a better stability of the biocatalyst was observed with immobilized cells.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260290412
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  • 9
    Electronic Resource
    Electronic Resource
    Features op the protonation of N-vinylpyrroles (1987)
    Springer
    Russian chemical bulletin 36 (1987), S. 1060-1062 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Conclusions The protonation of N-vinylpyrroles by fluorosulfonic and trifluoroacetic acids occurs at the α-carbon atom of the pyrrole ring. Dimerization of the cation formed takes place in CF3CO2H. The rate of this process is much higher for the 2-phenyl derivative than for the 2-alkylvinylpyrrole derivative.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00956371
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