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  • 1965-1969  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Some Characteristics of Rapidly Labeled RNA in Jack Beau Leaves (1967)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 20 (1967), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The characteristics of rapidly labeled RNA in jack bean leaves were investigated. The RNA was prepared by the phenol method and fractionated with methylated serum albumin column. The composition of DNA and ribosomal RNA were also determined. The labeled RNA which appeared after 90 minutes' incubation could be differentiated clearly from the ribosomal RNA by means of the elution pattern and the nucleotide composition. The RNA labeled for 90 minutes disappeared completely after 210 minutes' incubation and the other three peaks appeared at almost the same position as ribosomal RNA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1967.tb08380.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Inducible Formation of Urease in Canavalia ensiformis (1968)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 21 (1968), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Increase in urease activity in leaves of Canavdlia ensifomis has been demonstrated. The activity of excised leaves increased by about 100 percent when 1.5 × 10−1M urea was added externally as inducer. Glycine-1-14C was used to investigate whether the increase in activity was dependent on de novo protein synthesis. The Incorporation of labeled amino acid into urease was twofold higher in induced samples than in non-induced ones. This indicates that the increase in activity is connected with de nova protein synthesis. The once increased activity was always followed by a rapid decrease. The urease activity was lost constantly with time after the external addition of ammonia in vivo. The inhibitory action of ammonia on urease fa vitro was eliminated by dialysis. Accordingly it may be concluded that the loss of activity was dependent on the product repression by ammonia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1968.tb07313.x
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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