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  • Drosophila melanogaster  (2)
  • 78.65J  (1)
  • Antioxidant preservation of toxin  (1)
  • Springer  (4)
  • 2010-2014
  • 1990-1994  (4)
  • 1920-1924
  • 1905-1909
Sammlung
Schlagwörter
Verlag/Herausgeber
  • Springer  (4)
Erscheinungszeitraum
  • 2010-2014
  • 1990-1994  (4)
  • 1920-1924
  • 1905-1909
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    The urate oxidase gene of Drosophila pseudoobscura and Drosophila melanogaster: Evolutionary changes of sequence and regulation (1992)
    Springer
    Journal of molecular evolution 34 (1992), S. 62-77 
    Details
    ISSN: 1432-1432
    Schlagwort(e): Urate oxidase ; Drosophila pseudoobscura ; Drosophila melanogaster ; Nucleotide sequence ; Evolutionary comparison ; Gene regulation ; Malpighian tubules
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary The urate oxidase (UO) transcription unit of Drosophila pseudoobscura was cloned, sequenced, and compared to the UO transcription unit from Drosophila melanogaster. In both species the UO coding region is divided into two exons of approximately equal size. The deduced D. pseudoobscura and D. melanogaster UO peptides have 346 and 352 amino acid residues, respectively. The nucleotide sequences of the D. pseudoobscura and D. melanogaster UO protein-coding regions are 82.2% identical whereas the deduced amino acid sequences are 87.6% identical with 42 amino acid changes, 33 of which occur in the first exon. Although the UO gene is expressed exclusively within the cells of the Malpighian tubules in both of these species, the temporal patterns of UO gene activity during development are markedly different. UO enzyme activity, UO protein, and UO mRNA are found in the third instar larva and adult of D. melanogaster but only in the adult stage of D. pseudoobscura. The intronic sequences and the extragenic 5′ and 3′ flanking regions of the D. pseudoobscura and D. melanogaster UO genes are highly divergent with the exception of eight small islands of conserved sequence along 772 by 5′ of the UO protein-coding region. These islands of conserved sequence are possible UO cis-acting regulatory elements as they reside along the 5′ flanking DNA of the D. melanogaster UO gene that is capable of conferring a wild-type D. melanogaster pattern of UO regulation on a UO-lacZ fusion gene.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00163853
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Effect of in situ post-deposition annealing on the formation of α-In2Se3 thin films grown by elemental evaporation (1992)
    Springer
    Applied physics 54 (1992), S. 293-299 
    Details
    ISSN: 1432-0630
    Schlagwort(e): 68.55 ; 73.60F ; 78.65J ; 81.15E
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract Stoichiometric polycrystalline In2Se3 thin films have been grown by elemental evaporation on both glass and quartz substrates. The compositions are examined by DAN fluorimetry and X-ray photoelectron spectroscopy (XPS). Structure of the films are characterized by X-ray diffraction. The structure of this α-form of thin films have been determined to be hexagonal. Optimization of the preparative conditions employed for elemental evaporation, helped in preparing monophasic films by the suppression of other phases to a very minor extent. Influence of annealing conditions on the stoichiometry of the films are investigated in detail.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00323853
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Fermentation and toxin studies of the molluscicidal strains ofBacillus brevis (1994)
    Springer
    Journal of industrial microbiology and biotechnology 13 (1994), S. 112-119 
    Details
    ISSN: 1476-5535
    Schlagwort(e): MolluscicidalBacillus toxin ; Bacillus brevis ; Biomphalaria glabrata ; Biocontrol of snails ; Antioxidant preservation of toxin ; Secondary fermentation factor
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Summary Strain SS86-4 was one of 40Bacillus brevis strains shown to be molluscicidal to the schistosomiasis snail vectorBiomphalaria glabrata. When grown in mB4 medium in 2-L fermentors, SS86-4 was molluscicidal only if fructose or phenylalanine was present in the medium. This is reminiscent of secondary fermentation factor effects, in this case an antioxidant effect. In vivo proteases also were capable of reducing molluscicidal activity. The molluscicidal toxin has an LC50 of 1 μg toxin protein ml−1 (approx. 1 p.p.m.) and may be described as a small proteinaceous, heat-stable, oxygen-sensitive entity associated with the particulate portion of the cell wall fraction ofB. brevis that is formed prior to sporulation. Initial information indicates that its HPLC signature shows major peaks at 148.37 and 163.96 s and consists of two bands of approximately 5.3 kDa and 8.7 kDa on PAGE gel.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01584108
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    The faint band/interband region 28C2 to 28C4-5(−) of the Drosophila melanogaster salivary gland polytene chromosomes is rich in transcripts (1991)
    Springer
    Molecular genetics and genomics 226 (1991), S. 81-87 
    Details
    ISSN: 1617-4623
    Schlagwort(e): Drosophila melanogaster ; Transcription map ; Faint bands ; Interband chromatin ; Polytene chromosomes
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary Urate oxidase mRNA and five other transcripts map along 38 kb of DNA in the region 28C on the Drosophila melanogaster second chromosome. Three biotinylated restriction fragments from this 38 kb of DNA, one from each end and one from the middle, were individually hybridized in situ to slightly stretched salivary gland polytene chromosomes. The data from these in situ hybridizations in combination with the transcription map of the 38 kb of DNA indicate that: (i) there are six discrete RNA species encoded along the 38 kb of DNA and (ii) these six transcripts map to the faint band/interband region which includes the proximal edge of 280, the three faint bands, 28C2, 280 and 28C4-5(−), and the adjacent interband chromatin. Our data are consistent with the few published studies directly demonstrating that faint band/interband regions of the Drosophila melanogaster salivary gland polytene chromosomes code for a high density of transcripts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00273590
    Standort Signatur Erwartet Verfügbarkeit
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